Resumen (Objetivo). Se evaluó el manglar de Chacarita en el Pacífico Central de Costa Rica, a través de la composición florística y las poblaciones de moluscos asociados de interés comercial, con el fin de proponer actividades de aprovechamiento sustentables en el manglar. (Metodología). Mensualmente y durante un año, se realizaron visitas al área de estudio, con el propósito de establecer una base florística de árboles de mangle y medir el almacenamiento de carbono en el lugar, además, de recolectar moluscos bivalvos para analizar el estado de las poblaciones, con base en las abundancias de organismos hallados y otras características como las longitudes y la masa de estos. En los mangles, se obtuvo el diámetro de la altura de pecho (DAP en cm), la altura (m), el índice de valor de importancia (IVI) y las reservas de carbono (Mg C·ha-1). En cuanto a los moluscos, se examinaron cuatro especies de interés comercial, evaluando la longitud (cm), la masa (g) y el índice gonadosomático. Finalmente, se realizaron valoraciones económicas de los datos obtenidos en el manglar, del turismo e información histórica de pesca para el acopio de Chacarita. (Resultados). Se hallaron cinco especies de mangles, Rhizophora mangle, Rizophora racemosa, Laguncularia racemosa, Avicennia germinans y Pelliciera rhizophorae; P. rhizophorae fue la de mayor índice de valor de importancia. Se obtuvo un almacenamiento de carbono equivalente a 78.49 Mg C·ha-1. Se contabilizaron 357 organismos, de los cuales el 18 % correspondió a Anadara similis, 37.5 % a Anadara tuberculosa, 41.46 % a Leukoma spp. y 3.08 % a Mytella guyanensis. Tomando en cuenta el valor económico de las reservas de carbono y los moluscos bivalvos presentes en los muestreos, se obtuvieron valoraciones económicas de 9812.63 USD·ha-1 y 28 USD·ha-1, respectivamente. (Conclusiones). Las bajas densidades poblacionales de moluscos, especialmente del género Anadara, hacen necesario establecer medidas de gestión que permitan recuperar las poblaciones de estos. La presente investigación propone actividades de aprovechamiento sustentables, como turismo comunitario con fines educativos y culturales.

Resumo (Objetivo). O mangue de Chacarita, no Pacífico Central da Costa Rica, foi avaliado por meio da composição florística e das populações de moluscos associados de interesse comercial, com o objetivo de propor atividades de uso sustentável no mangue. (Metodologia). Foram feitas visitas mensais à área de estudo durante um ano para estabelecer uma base florística de árvores do mangue e medir o armazenamento de carbono no local, bem como para coletar moluscos bivalves para analisar o status das populações, com base na abundância de organismos encontrados e em outras características, como comprimento e massa de tais organismos. Nos manguezais, foram obtidos o diâmetro à altura do peito (DAP em cm), a altura (m), o índice de valor de importância (IVI) e as reservas de carbono (Mg C-ha-1). No que diz respeito aos moluscos, foram examinadas quatro espécies de interesse comercial., avaliando o comprimento (cm), a massa (g) e o índice gonadossomático. Por fim, foram feitas avaliações econômicas de dados de mangue, turismo e informações históricas de pesca para a coleção Chacarita. (Resultados). Foram encontradas cinco espécies de mangue, Rhizophora mangle, Rizophora racemosa, Laguncularia racemosa, Avicennia germinans e Pelliciera rhizophorae; a P. rhizophorae apresentou o índice de valor de importância mais alto. Foi obtido um armazenamento de carbono equivalente a 78.49 Mg C-ha-1. Foram calculados um total de 357 organismos, dos quais 18% correspondeu a Anadara similis, 37.5% Anadara tuberculosa, 41.46% Leukoma spp. e 3.08% Mytella guyanensis. Levando em conta o valor econômico das reservas de carbono e dos moluscos bivalves presentes nas amostras, foram obtidas avaliações econômicas de US$ 9812.63 ha-1 e US$ 28 ha-1, respectivamente. (Conclusões). As baixas densidades populacionais de moluscos, especialmente do gênero Anadara tornam necessário o estabelecimento de medidas de manejo para permitir a recuperação dessas populações. Esta pesquisa propõe atividades de uso sustentável, como o turismo comunitário para fins educacionais e culturais.

Abstract (Objective). The floristic composition and populations of associated molluscs of commercial interest of the Chacarita mangrove forest on the Central Pacific of Costa Rica were evaluated to guide proposals for sustainable exploitation activities in the mangrove forest. (Methodology). Monthly visits to the study area were conducted for one year to establish a floristic baseline of mangrove trees and measure carbon storage. Additionally, bivalve molluscs were collected to analyze the state of their populations based on the abundances of organisms found, as well as other characteristics such as length and mass. Data regarding the mangrove trees included their diameter at breast height (DBH, cm), height (m), importance value index (IVI), and carbon reserves (Mg C·ha-1). Four mollusc species of commercial interest were analyzed, using data on their length (cm), weight (g), and gonodosomatic index. Economic evaluations were also conducted using data obtained from the mangrove forest, as well as tourism and historical fishing data for the collection of Chacarita. (Results). Five species of mangroves were identified: Rhizophora mangle, Rizophora racemosa, Laguncularia racemosa, Avice germinans, and Pelliciera rhizophorae, while P. rhizophorae had the highest importance value index. The study revealed a carbon storage equivalent to 78.49 Mg C·ha-1. A total of 357 organisms were counted, with Anadara similis accounting for 18% of the total count, followed by Anadara tuberculosa (37.5%), Leukoma spp. (41.46%), and Mytella guyanensis (3.08%). When considering the economic value of carbon stocks and the bivalve molluscs obtained from the samples, economic valuations of 9,812.63 USD·ha-1 and 28 USD·ha-1 were determined, respectively. (Conclusions). The low population densities of molluscs, particularly those belonging to the Anadara genus, necessitate the establishment of management measures to facilitate the recovery of these mollusk populations. This research proposes sustainable use activities such as community tourism for educational and cultural purposes.

ABSTRACT. The infestation of boring polychaetes can represent a serious problem for mollusks in natural populations and aquaculture. In the Mexican Pacific, their effects have been scarcely studied. So, this research aimed to analyze the infestation levels of Polydora sp. on Nodipecten subnodosus in the Ojo de Liebre Lagoon. Between May 2014 and October 2015, 639 specimens from four banks were collected to examine the spatial and temporal variations of the number of blisters by valve and their relationships with the scallop size. Around the lagoon mouth, the smaller scallops (<51 cm2) dominated, having the higher infestation percentages: Chocolatero: 88 ind (61%), Zacatoso: 86 ind (51%). In contrast, the larger scallops (51-89 cm2) were found in the inner lagoon, with smaller percentages of infestation: La Concha: 35 ind (21%) and El Datil: 29 ind (19%). The right valves, in closer contact with the bottom, were more infested than the left; those from Chocolatero and Zacatoso had more blisters (right 51-61%, left 14-15%), whereas in La Concha and El Datil both valves had fewer blisters (right 19-21%, left 6-8%). Larger scallops (51-89 cm2) from La Concha had low (5 ind) and medium (4 ind) infestation levels, and those smaller from Chocolatero (13-51 cm2) had high levels (34 ind). However, the relationship size scallop-infestation level needed to be clarified since larger scallops of El Datil also had high infestation levels (6 ind), and smaller specimens of Zacatoso showed lower (25 ind) and medium (27 ind) levels.

ABSTRACT. The shape of the shell and the development of bivalve mollusks are strongly associated with the action of environmental conditions. The environmental variables, functional parameters of the shell, and the relative growth of Mytella strigata were seasonally (summer 2020 to spring 2021) determined in three locations: Altata Bay (AB), Macapule Lagoon (ML) and El Colorado Bay (CB) from the southeast Gulf of California (Mexico). Shell dimensions (SL: shell length, SH: shell height, and SW: shell width) showed significant differences. ML mussels obtained the highest measurements (SL = 19.12 ± 1.60 mm, SH = 47.67 ± 3.92 mm, SW = 14.92 ± 1.04 mm, and body weight = 7.54 ± 1.40 g). The greatest shell elongation (SH/SL) was observed in ML (2.49 ± 0.13), while CB recorded the highest compactness and convexity values. SH/SL was the most substantial interaction (R2 = 0.67, 0.63, and 0.55 in AB, ML and CB, respectively). The principal component analysis shows three groupings of the biometric indicators and the relative growth of mussels concerning the environmental parameters in each lagoon. The environmental conditions affected the shape of the shell and relative growth of M. strigata in the three lagoons, emphasizing the type of habitat and salinity as the determining factors. The shell phenotypic plasticity of this mussel represents an adaptive strategy of resilience to the environmental factors in each place.

Resumen. Para determinar cambios en las capturas de moluscos y crustáceos asociados a zonas de manglar en el complejo lagunar Bahía Magdalena-Almejas y el posible impacto de la variabilidad ambiental a mediano plazo, se analizaron tendencias de producción derivadas de datos registrados por la Comisión Nacional de Acuacultura y Pesca de 1992 a 2021. Además, se establecieron posibles relaciones con las condiciones ambientales asociadas con los periodos de presencia del El Niño-La Niña basados en valores de temperatura superficial del mar. Las pesquerías incluidas aprovechan las siguientes especies: almejas pata de mula (Anadara tuberculosa), catarina (Argopecten ventricosus), chocolata (Megapitaria squalida) y roñosa (Chione californiensis); callos de hacha (Pinna rugosa y Atrina maura), y caracoles murex negro y rosa (Hexaplex nigritus y Phyllonotus erythrostomus). También se consideraron las de camarón azul (Penaeus stylirostris), camarón café (P. californiensis) y jaiba verde (Callinectes bellicosus). Los resultados muestran variabilidad entre las series de cada pesquería, con tendencias positivas para almeja pata de mula, roñosa y caracol chino y negativas para almeja catarina, chocolata y camarón. Los cambios que suceden con mayor frecuencia parecen cíclicos y aparentemente relacionados con variaciones en las condiciones ambientales. Sin embargo, se concluye que es difícil diferenciar y cuantificar los posibles efectos en la disponibilidad de recursos por causa de la pesca o de modificaciones en los manglares, las condiciones del hábitat y su impacto en procesos biológicos como reproducción, alimentación, crecimiento, movilidad y reclutamiento.

Abstract. To determine changes in the catches of mollusks and crustaceans associated with mangrove areas in the lagoon complex of Magdalena-Almejas Bay and the possible impact of medium-term environmental variability, production trends derived from data recorded by the National Commission of Aquaculture and Fisheries from 1992 to 2021 were analyzed. In addition, possible relationships were established with environmental conditions associated with El Niño-La Niña periods based on sea surface temperature values. The fisheries included in the analysis targeted the following species: the black arks (Anadara tuberculosa), Pacific calico scallops (Argopecten ventricosus), squalid callista clams (Megapitaria squalida), Californian venus clams (Chione californiensis), pen shells (Pinna rugosa and Atrina maura), and the Murex snails the black and pink (Hexaplex nigritus and Phyllonotus erythrostomus). Blue shrimp (Penaeus stylirostris), brown shrimp (P. californiensis), and green swimming crab (Callinectes bellicosus) were also considered. The results showed variability among the series for each fishery, with positive trends for black arks, Californian venus clams, and Chinese snails, and negative trends for Pacific calico scallops, squalid callista clams, and shrimps. The most frequently occurring changes appeared to be cyclic and related to variations in environmental conditions. However, we concluded that it is difficult to differentiate and quantify the possible effects on resource availability due to fishing or modifications in mangroves, habitat conditions, and their impact on biological processes such as reproduction, feeding, growth, mobility, and recruitment.

The environmental impact of pharmaceuticals is a significant concern, as understanding their presence, spread, and harm in coastal regions remains limited. The occurrence of non-steroidal anti-inflammatory drugs (NSAIDs), namely, mefenamic acid (MFN), diclofenac (DCF) and naproxen (NPX) were studied in river waters. Four sample collections were carried out in five points in the dry and rainy seasons. Solidified floating organic drop microextraction (SFODME) coupled with high performance liquid chromatography using diode array detection (HPLC-DAD) were applied to quantify the presence of MFN, DCF and NPX in river water samples. DCF had the highest concentration (640 ng L-1), followed by NPX (410 ng L-1). MFN was not detected in any point within the used working range (limit of detection (LOD) of 0.07 µg L-1). Additionally, an assessment was conducted to evaluate the environmental risk associated with the pharmaceuticals detected in freshwater, specifically in various organisms including algae, mollusks, amphibians, fish, and cnidarians, spanning different trophic levels. The ecotoxicological assessment showed risks ranging from low to high, indicating deleterious effects on several exposed species. No high environmental risk was detected in the sampling areas. Although no immediate negative effects were detected, the potential impact on non-target species should not be disregarded. concern spread limited nonsteroidal non steroidal antiinflammatory anti inflammatory NSAIDs, NSAIDs , (NSAIDs) namely (MFN) (DCF (NPX waters seasons SFODME (SFODME HPLCDAD HPLC DAD (HPLC-DAD samples 640 (64 L1, L1 L 1 L-1) 410 (41 L1. . limit LOD (LOD 007 0 07 0.0 Additionally freshwater algae mollusks amphibians fish cnidarians levels areas nontarget target disregarded (NSAIDs (MFN 64 (6 L-1 41 (4 00 0. 6 ( L- 4

Resumo O aumento da modificação dos habitats e da perda de espécies demanda esforços consistentes para descrever e compreender os padrões de biodiversidade. O programa BIOTA/FAPESP foi criado nesse contexto e é uma iniciativa de sucesso para promover estudos em biodiversidade e conservação no Brasil. O BIOTA/Araçá é um projeto interdisciplinar que promoveu uma avaliação detalhada da biodiversidade da Baía do Araçá, um ecossistema costeiro localizado ao Norte do estado de São Paulo, Sudeste do Brasil. A baía engloba múltiplos habitats, tais como praias, manguezais, costões rochosos, e uma planície de maré, e também fornece importantes serviços ecossistêmicos. Infelizmente, a baía está sujeita à conflitos sócio-ambientais complexos que contrastam demandas econômicas, sociais e ambientais (i.e. a expansão das atividades do porto vizinho vs. a pesca artesanal de pequena escala e a proteção da biodiversidade). O presente estudo apresenta um levantamento das espécies bentônicas que ocorrem nos diferentes habitats da Baía do Araçá, incluindo dados obtidos durante o projeto BIOTA/Araçá e de investigações realizadas anteriormente na área. As espécies bentônicas desempenham um papel importante no ambiente marinho, e estudar a diversidade desses organismos que vivem associados ao fundo é indispensável para compreender o funcionamento do meio ambiente. A macrofauna, meiofauna, e microorganismos associados aos fundos consolidado e inconsolidado foram listados, e informações adicionais foram fornecidas para cada espécie, tais como a distribuição geográfica e nos habitats. O checklist inclui 826 espécies, quase 70% registradas durante o projeto BIOTA/Araçá. Os taxa mais especiosos foram os anelídeos (225 spp.), moluscos (194 spp.), e crustáceos (177 spp.). Entre as espécies bentônicas listadas, sete são endêmicas da Baía do Araçá, 14 são consideradas ameaçadas de extinção, e sete são exploradas economicamente. A baía é a localidade tipo de vários taxa, e 11 novas espécies bentônicas foram descritas com base em espécimes amostrados durante o projeto. Este projeto mostra a importância da Baía do Araçá como um ambiente de riqueza biológica única e demonstra a necessidade de esforços para a sua conservação considerando as atuais ameaças. BIOTAFAPESP BIOTA FAPESP Brasil BIOTAAraçá Paulo praias manguezais rochosos maré ecossistêmicos Infelizmente sócioambientais sócio econômicas i.e. ie i (i.e vs . biodiversidade) área marinho macrofauna meiofauna listados espécie 82 70 225 (22 spp., spp spp. , spp.) 194 (19 177 (17 spp.. listadas 1 extinção economicamente ameaças i.e 8 7 22 (2 19 (1 17 2 (

Abstract Increasing habitat modification and species loss demand consistent efforts to describe and understand biodiversity patterns. The BIOTA/FAPESP Program was created in this context and it has been a successful initiative to promote studies on biodiversity and conservation in Brazil. The BIOTA/Araçá is an interdisciplinary project that provided a detailed evaluation of the biodiversity of Araçá Bay, a coastal seascape located on the North coast of the state of São Paulo, Southeast Brazil. The bay encompasses multiple habitats, such as beaches, mangroves, rocky shores, and a tidal flat, and provides important ecosystem services. Unfortunately, the bay is the subject of complex social-environmental conflicts that oppose economic, social, and environmental demands (i.e., the expansion of neighboring harbor activities vs. small-scale artisanal fisheries and protection of biodiversity). The present study presents a survey of the benthic species occurring in the different habitats of Araçá Bay, including data obtained during the BIOTA/Araçá project and previous assessments of the area. The benthic species play an important role in marine environments and studying the diversity of these organisms that live associated with the bottom is indispensable for comprehending the environment’s functioning. The macrofauna, meiofauna, and microorganisms associated with soft and hard bottom were listed, and additional information, such as the habitat and geographical distribution, were provided for each species. The checklist includes 826 species, almost 70% recorded during the BIOTA/Araçá project. The most speciose taxa were the annelids (225 spp.), mollusks (194 spp.), and crustaceans (177 spp.). Seven benthic species are endemic to Araçá Bay, 14 are considered threatened, and seven are economically exploited. Furthermore, the bay is the type locality of many taxa, and 11 new benthic species were described based on specimens sampled during the project. This project shows the importance of Araçá Bay as a unique biologically rich environment and highlights the need for conservation efforts in light of the current threats. patterns BIOTAFAPESP BIOTA FAPESP Brazil BIOTAAraçá Paulo beaches mangroves shores flat services Unfortunately socialenvironmental social economic i.e., ie i e (i.e. vs smallscale small scale biodiversity. . biodiversity) area s functioning macrofauna meiofauna listed information distribution 82 70 225 (22 spp., spp spp. , spp.) 194 (19 177 (17 spp.. 1 threatened exploited Furthermore threats i.e. (i.e 8 7 22 (2 19 (1 17 i.e 2 (

ABSTRACT Sewage pollution is an increasing problem for Perna perna mussel farmers in Brazil, and there is an urgent need to adopt post-harvest treatments, such as depuration, to reduce the associated microbiological risks. However, depuration of this species has been discouraged by experiences showing that the animals usually spawn during this procedure, bringing difficulties for water treatment and making them lighter, weakened, and undesirable to be traded as a live product. This study aimed at developing a protocol to prevent mussels from spawning by modulating the water temperature during depuration. For one year (from 2021-07-07 to 2022-06-29), market-size mussels harvested from the Brazilian southern coast were divided into groups of five and immersed during 50 hours in sets of experimental units (15 L acrylic aquariums) that emulated depuration tanks with different water temperatures (ranging from 8°C to 31°C). During this period, the experimental units were inspected nine times to check for spawning/spawned mussels. Analysis of the overall results showed that 21 (95.5%) out of the 22 assays resulted in mussels spawning and that this behavior was mostly recorded (80.3%) within the first 5:30 hours of the assays. The models developed (binary logistic regression) indicate that conditioning the depuration water to temperatures 5°C lower than those registered at the harvest site holds the potential to reduce the chances of spawning by more than 50%, and these chances drop to 8.2% when this difference reaches 10°C. Further studies are needed to show how reducing water temperature during depuration influences its efficiency in terms of pathogen reduction, aiming to define the best protocol to optimize microbial removal and minimize spawning. Brazil postharvest post treatments risks However procedure lighter weakened product 20210707 2021 07 2021-07-0 20220629, 20220629 2022 06 29 , 2022-06-29) marketsize market size 5 15 (1 aquariums ranging 8C C 8 31°C. 31C 31°C . 31 31°C) period spawningspawned spawned 2 95.5% 955 95 (95.5% 80.3% 803 80 3 (80.3% 530 30 5:3 binary regression 5C 50% 82 8.2 10C 10 10°C reduction 2021070 202 0 2021-07- 2022062 2022-06-29 1 ( 95.5 9 (95.5 80.3 (80.3 53 5: 8. 202107 20 2021-07 202206 2022-06-2 95. (95. 80. (80. 20210 2021-0 20220 2022-06- (95 (80 2021- 2022-06 (9 (8 2022-0 2022-

Abstract Fishermen-hunter-gatherers of sambaquis (Brazilian shell mounds) had an intimate affinity with marine-coastal environments, where they exploited a great variety of fish and mollusks that comprise the best documented fauna from sambaquis. However, other groups of animals as mammals, birds, reptiles, and amphibians are also present in these sites, but are relatively less studied. This paper is the first one focused exclusively on the Tetrapoda biodiversity of sambaquis and aimed to identify tetrapods of ten sites from southern Brazil. We present a faunal inventory and data regarding animal capture and environmental exploitation. We identified the specimens anatomically and taxonomically, analyzed them concerning fragmentation, and quantified the data for the number of identified specimens (NISP) and minimum number of individuals (MNI). Despite the high degree of fragmentation of remains, we identified 46 taxa. As expected, most were from marine animals: cetaceans (total NISP = 2,568 and MNI = 27), otariids (total NISP = 248 and MNI = 32), and seabirds (total NISP = 65 and MNI = 23), indicating great relevance of marine tetrapod fauna as a resource for sambaqui builders (79.39% of NISP). We thus document the close bond between fishermen-hunter-gatherers of sambaquis and the marine tetrapods in southern Brazil. Fishermenhuntergatherers Fishermen hunter gatherers Brazilian mounds marinecoastal coastal environments However mammals birds reptiles studied Brazil exploitation taxonomically (NISP MNI. . (MNI) remains 4 taxa expected total 2568 2 568 2,56 27, 27 , 27) 24 32, 32 32) 6 23, 23 23) 79.39% 7939 79 39 (79.39 NISP. NISP) fishermenhuntergatherers fishermen (MNI 256 56 2,5 3 79.39 793 7 (79.3 25 5 2, 79.3 (79. 79. (79 (7 (

ABSTRACT Harmful algal blooms (HABs) can negatively affect coastal water quality, aquatic fauna, and human health from the consumption of toxin-contaminated seafood. Estuaries are especially prone to the incidence of these noxious events and sensitive to the associated damage. This study represents a comprehensive overview of previous investigations reporting the occurrence of harmful algae and/or phycotoxins in the Paranaguá Estuarine Complex (CEP), in Southern Brazil. Secondary data from 2002 to 2021 were combined with new results obtained from widely spaced sampling campaigns performed from 2018 to 2019 to assess the periods and estuarine sectors at greater risk for the incidence of HABs. In total, about 600 water/sediment samples containing harmful microalgae and 675 tissue samples of phycotoxin-contaminated fauna were analyzed. The most frequent and abundant species of potentially toxic microalgae were dinoflagellates belonging to the species complexes Dinophysis acuminata and Prorocentrum lima, producers of diarrhetic shellfish toxins (DSTs), and diatoms of the genus Pseudo-nitzschia, producers of amnesic shellfish toxins (ASTs). Okadaic acid, a DST, was by far the most common toxin in the fauna, reaching higher levels in primary consumers such as bivalve mollusks (mussels, oysters, and clams), zooplankton, and suspension-feeding crustaceans (ghost shrimps), and moderate to low levels in cephalopods, fishes, gastropods, echinoderms, sea turtles, seabirds, and cetaceans. Less rainy periods (winter-early spring) were associated with the highest incidence of DSTs and blooms of their producing algae P. lima and Dinophysis spp., mainly in the middle region of Paranaguá Bay and on the shallow continental platform adjacent to the estuarine mouth. However, certain HAB-forming species may be more successful in inner estuarine areas ( Prorocentrum cordatum) and during different periods, such as late summer—early fall ( Pseudo-nitzschia spp.). Continuous monitoring of harmful algae and toxins is therefore highly recommended to mitigate the effects of HABs in the entire estuary. (HABs quality toxincontaminated contaminated seafood damage andor or CEP, CEP , (CEP) Brazil 200 202 201 total 60 watersediment sediment 67 phycotoxincontaminated phycotoxin analyzed DSTs, (DSTs) Pseudonitzschia, Pseudonitzschia Pseudo nitzschia, nitzschia ASTs. ASTs . (ASTs) acid DST mussels, mussels (mussels oysters clams, clams clams) zooplankton suspensionfeeding suspension feeding ghost shrimps, shrimps shrimps) cephalopods fishes gastropods echinoderms turtles seabirds cetaceans winterearly winter early spring P spp spp. mouth However HABforming HAB forming cordatum summerearly summer spp.. spp.) estuary (CEP 20 6 (DSTs (ASTs 2

Abstract Invasive non-native freshwater mollusks are a growing concern in South America, with 16 species already recorded in the region. Among them, Sinotaia quadrata has only been documented in Argentina, for the first time in the Punilla Valley, Córdoba (2009) and La Plata, Buenos Aires (since 2015). In this study, we report the presence of S. quadrata in two additional areas, the Río de la Plata River and a stream (unnamed) in the Paraná River basin, two of the most significant rivers in South America, located in the provinces of Buenos Aires and Entre Ríos, respectively. These new records confirm the invasive nature of this species, which has also been identified in Europe, the United States, and Africa in recent years. The findings of this study highlight the need for continued monitoring and management of invasive species in South America’s freshwater ecosystems. nonnative non native America 1 region them Argentina Valley 2009 (2009 since 2015. 2015 . 2015) S areas unnamed (unnamed basin Ríos respectively Europe States years Americas s ecosystems 200 (200 201 20 (20 2 (2 (

Resumo: Objetivo Inventariar os danos causados aos ambientes naturais ou à biodiversidade nativa por por espécies exóticas é desafiador. Nós testamos se o número de detecções de espécies exóticas é afetado pelo número total de espécies exóticas ou pela riqueza de exóticas invasoras, com o intuito de predizer que grupos de espécies são mais prováveis futuros invasores. Métodos Nós apresentamos informações obtidas de um senso nacional conduzido sobre organismos exóticos anelídeos, anfíbios, cnidários, crustáceos, macrófitas aquáticas, microrganismos, moluscos, nematelmintos, peixes, platelmintos e répteis para todas as bacias hidrográficas do país. Utilizamos o número de detecções como variável dependente da riqueza de espécies exóticas, por grupo taxonômico e da riqueza de espécies exóticas invasoras. Resultados Nós obtivemos 1.896 detecções de diferentes 183 espécies aquáticas. Peixes e moluscos foram os invasores comuns já que suas detecções são mais frequentes do que o esperado ao acaso, considerando todas as espécies ocorrendo nos ecossistemas de água doce do país. Nós também encontramos relações positivas e robustas entre as detecções por grupo taxonômico e a riqueza em espécies por grupo. Conclusões Os resultados ilustram como o ambiente de água doce brasileiro é frágil a invasões biológicas e destacam a necessidade de ações efetivas direcionadas à questão. A incerteza científica a respeito do status de espécies exóticas e seu podencial invasor é grande, o que leva à necessidade de precaução a respeito destas espécies. Apesar do cenário atual, novas políticas abrem opotunidades para que parques aquáticos com organismos exóticos se dispersem mais no Brasil o que deve aumentar ainda mais a pressão sobre ecossistemas naturais e espécies nativas, reforçando a necessidade já manifestada pela comunidade científica, de maior atenção ao tema. Resumo desafiador invasoras anelídeos anfíbios cnidários crustáceos aquáticas microrganismos nematelmintos peixes país 1896 1 896 1.89 18 acaso questão grande atual nativas tema 189 89 1.8 8 1.

Abstract: Aim Assessing the damage caused to natural environments and native biodiversity by alien species is challenging. We tested whether the number of detections of alien species is affected by total alien or total invader alien species richness, considering the importance of predicting which species are more probable future invaders. Methods We summarized a research information survey conducted on alien amphibians, annelids, aquatic macrophytes, cnidarians, crustaceans, fish, microorganisms, mollusks, nemathelminths, platyhelminths, and reptiles, and for Brazilian watersheds. We used linear regressions between detections and total alien species richness and between detections and invader species richness. Results We obtained 1,896 alien detections of 183 aquatic species in Brazil. Fish and mollusk species were the commonest invaders due to their detections being more frequent than expected by chance, considering all the alien species occurring in Brazilian freshwater ecosystems. We also found positive and robust linear relationships between alien species detections and alien species richness. Conclusions Our results illustrate how Brazilian freshwater systems are fragile to alien invasions and highlight the need for effective action to address this question. Scientific uncertainty in Brazil regarding the status of some alien species and their potential harm is high, highlighting the need for a cautionary overview of invaders. Despite this scenario, new policies create opportunities for aquatic parks with exotic organisms to spread further in Brazil, which, in actual Brazilian conditions, is likely to increase the pressure on natural ecosystems and native species. This reinforces the already expressed need by the scientific community for greater attention to the issue. Abstract challenging amphibians annelids macrophytes cnidarians crustaceans fish microorganisms mollusks nemathelminths platyhelminths reptiles watersheds 1896 1 896 1,89 18 chance question high scenario conditions issue 189 89 1,8 8 1,

ABSTRACT Bycatch species are as important as target species in the challenge of comprehensive fishery management. This is especially the case for vulnerable species such as elasmobranchs in offshore areas of the Colombian Pacific Ocean (CPO), for which information is scarce and long-term databases are used. Therefore, this study aimed to characterize the bycatch in tuna purse-seine fishery with an elasmobranch species approach using fishery data from 2000 to 2019. A total of 59 bycatch species were identified, including 27 bony fishes, 22 elasmobranchs, two mollusks, four sea turtles, and four dolphins. The total bycatch percentage was 20.8%, with elasmobranchs accounting for less than 5%. Fish aggregating devices (FADs) and class 6 vessels recorded the highest percentage of bycatch. Bony fish bycatch was mainly obtained from the border of Ecuador until 4° N across the CPO. Elasmobranchs were captured throughout the CPO, showing differences by vessel class and fishing method. The silky shark Carcharhinus falciformis was the most caught species. Elasmobranch spatial abundance and capture hotspots showed the highest values towards the northern coast, in offshore areas of Gorgona Island, southwards in offshore areas, and around Malpelo Island. FADs captured the highest number of bycatch species compared with other fishing methods, such as Tuna Associated with Dolphins (DEL), Natural Floating Objects (NAT), and Tuna not Associated (NoAs). Management recommendations for bycatch species in this fishery are provided in the CPO. management CPO , (CPO) longterm long term used Therefore purseseine purse seine 200 2019 5 identified 2 fishes mollusks turtles dolphins 208 20 8 20.8% 5% (FADs 4 method coast Island methods DEL, DEL (DEL) NAT, NAT (NAT) NoAs. NoAs . (NoAs) (CPO 201 20.8 (DEL (NAT (NoAs 20.

Resumo: Um dos impactos ambientais mais comuns que tem causado efeitos irreversíveis nos ecossistemas é a introdução de espécies exóticas. Além dos desastres ecológicos que podem ser provocados, como o declínio e a extinção de espécies nativas, este fenómeno pode gerar perdas económicas significativas e a possibilidade de propagação de parasitas que são transmitidos por estas espécies exóticas. Esses processos podem ser acentuados pelas mudanças climáticas, que ao longo do tempo alteram o padrão de distribuição global das espécies afetadas, gerando casos de sobreposição de nicho com espécies que compartilham nichos semelhantes. Nesse sentido, o conhecimento sobre as áreas com possível ocorrência dessas espécies pode direcionar as medidas de monitoramento e controle. Neste estudo, desenvolvemos modelos de previsão atuais e futuros para identificar áreas de adequabilidade na região Neotropical para Melanoides tuberculata (Müller, 1774) e nove espécies de moluscos nativos do continente americano, utilizando a ferramenta de modelagem de nicho ecológico. Além disso, avaliamos a sobreposição de nicho ecológico entre a espécie invasora e as espécies nativas de moluscos de água doce para verificar se os efeitos das mudanças climáticas alterariam a distribuição desses organismos. Para a elaboração dos modelos de predição, foram adotados os seguintes procedimentos metodológicos: registros de ocorrência dos moluscos em diferentes bases de dados e busca de dados ambientais para condições climáticas em cenários atuais e futuros no WorldClim 2.0 (SSP2-4.5 e SSP2-8.5). Além disso, foram realizados procedimentos de modelagem utilizando sete pacotes do software R, avaliação dos modelos utilizando a métrica True Skill Statistic (TSS), construção de mapas e quantificação e sobreposição de nicho ecológico das espécies incluídas na análise. Os resultados indicaram que várias áreas da região Neotropical são adequadas para a ocorrência de M. tuberculata nos cenários atuais. Além disso, as áreas adequadas para a sua ocorrência serão provavelmente alargadas em ambos os cenários futuros. Para as espécies nativas, houve diferenças significativas em relação às áreas de aptidão, com uma redução para algumas espécies. Testes de similaridade de nicho indicaram sobreposição significativa apenas entre M. tuberculata e o planorbídeo Biomphalaria straminea (Dunker, 1848). Verificamos que a expansão de M. tuberculata pode ter consequências negativas, incluindo a redução de espécies nativas de gastrópodes e a disseminação de trematódeos de importância médica e veterinária que este molusco pode transmitir. Resumo exóticas provocados afetadas semelhantes sentido controle estudo Müller, Müller (Müller 1774 americano disso organismos predição metodológicos 20 2 0 2. SSP24.5 SSP245 SSP SSP2 4.5 4 5 (SSP2-4. SSP28.5. SSP285 8.5 . 8 SSP2-8.5) R TSS, TSS , (TSS) análise M aptidão Dunker, Dunker (Dunker 1848. 1848 1848) negativas transmitir 177 SSP24 SSP24. 45 4. (SSP2-4 SSP28 SSP28.5 85 8. SSP2-8.5 (TSS 184 17 (SSP2- SSP28. SSP2-8. 18 1 (SSP2 SSP2-8 (SSP SSP2-

Abstract: One of the most common environmental impacts that has caused irreversible effects on ecosystems is the introduction of exotic species. In addition to the ecological disasters that can be caused, such as the decline and extinction of native species, this phenomenon can generate significant economic losses and the possibility of the spread of parasites that are transmitted by these exotic species. These processes can be accentuated by climate change, which over time alters the global distribution pattern of the affected species, generating cases of niche overlap with species that share similar niches. In this sense, the knowledge about the areas with possible occurrence these species can direct the monitoring and control measures. In this study, we developed current and future prediction models to identify areas of suitability in the Neotropics for Melanoides tuberculata (Müller, 1774) and nine species of mollusks native to the American continent using the ecological niche modeling tool. In addition, we evaluated the ecological niche overlap between the invasive species and the native species of freshwater mollusks to verify whether the effects of climate change would alter the distribution of these organisms. The following methodological procedures were adopted to prepare the forecasting models: records of occurrence of the mollusks in different databases and search of environmental data for climate conditions in current and future scenarios in WorldClim 2.0 (SSP2-4.5 and SSP2-8.5). Besides, modeling procedures using seven packages of R software, evaluation of the models using the true skill statistic (TSS) metric, construction of maps and quantification and overlapping of ecological niche of the species included in the analysis. The results indicated that several areas of the Neotropics are suitable for the occurrence of M. tuberculata in the current scenarios. Moreover, the suitable areas for its occurrence will probably be expanded in both future scenarios. For native species, there were significant differences in relation to the areas of suitability, with a reduction for some species. Niche similarity tests indicated significant overlap only between M. tuberculata and the planorbid Biomphalaria straminea (Dunker, 1848). We discuss that the expansion of M. tuberculata can have negative consequences, including the reduction of native gastropod species and the spread of trematodes of medical and veterinary importance that this mollusk can transmit. Abstract niches sense measures study Müller, Müller (Müller 1774 tool organisms 20 2 0 2. SSP24.5 SSP245 SSP SSP2 4.5 4 5 (SSP2-4. SSP28.5. SSP285 8.5 . 8 SSP2-8.5) Besides software TSS (TSS metric analysis M Moreover Dunker, Dunker (Dunker 1848. 1848 1848) consequences transmit 177 SSP24 SSP24. 45 4. (SSP2-4 SSP28 SSP28.5 85 8. SSP2-8.5 184 17 (SSP2- SSP28. SSP2-8. 18 1 (SSP2 SSP2-8 (SSP SSP2-

Abstract The presence and potential adverse effects of emerging contaminants, such as UV filters and synthetic musk fragrances, in aquatic ecosystems has generated increasing concern. However, information about the sublethal effects and ecological risks of these substances to non-target organisms remains scarce. A systematic review of oxidative biomarkers was performed to better understand the mechanisms of these contaminants in bivalves. Bivalves were chosen as the focus of this study because they can provide integrated information related to contamination by ecotoxicologically relevant substances over time. Bibliographic database searches resulted in 10 articles published from 2019 to 2023. The biomarkers superoxide dismutase, catalase, glutathione peroxidase, and glutathione reductase showed promising responses (increase or decrease) in the presence of UV filters (oxybenzone, enzacamene, and octocrylene) and fragrances (galaxolide and tonalide). Glutathione S-transferase showed the most significant increase in response to these compounds, making it the most promising biomarker. Our results indicate a limited number of studies on the toxicity of personal care products, highlighting the need for further research in this area. concern However nontarget non target scarce bivalves time 1 201 2023 dismutase catalase peroxidase decrease oxybenzone, oxybenzone (oxybenzone enzacamene octocrylene galaxolide tonalide. tonalide . tonalide) Stransferase S transferase compounds biomarker products area 20 202 2

Abstract In preparation for compiling a catalogue of the South Atlantic American malacofauna, this study addresses the taxonomy of selected species within less intricate groups to ensure accurate classification within the catalogue. The following nomenclatural acts are undertaken for this purpose: New species descriptions: 1, Tectura iguypis; 2, Nacella mirim; 3, Calliostoma soror; 4, Abyssochrysos quasilissus; 5, Caecum jonesae; 6, Sinum striotis; 7, Agaronia sterica; 8, Voluta melodica; 9, Phrontis rocas; 10, Goniofusus phoenix; 11, Dolicholatirus etherius; 12, Lightbournus rendatus; 13, Terebra joculosa; 14, Neoterebra potiguar; 15, Trimusculus pifius; 16, Brevinucula overa; 17, Ennucula ipepa; 18, Tindaria ruru; 19, Barbatia pehenguis; 20, Bathyarca arcadia; 21, Bentharca celeris; 22, Electroma electra; 23, Brachidontes ynous; 24, Pinna trindadis; 25, Pinna nembia; 26, Pinna pereria; 27, Servatrina amazonica; 28, Warrana culmen; 29, Lucinoma apocalyptica; 30, Cyrenoida implexa; 31, Hiatella marisqueira; 32, Cyrtopleura angelicalis; 33, Lyonsiella angulosa; 34, Graptacme obtura. Species revalidated: 1, Fissurella itapema; 2, Cranopsis watsoni; 3, Pedicularia tibia; 4, Semicassis iheringi; 5, Anachis veleda; 6, Terebra chilensis; 7, Iselica anomala; 8, Barbatia cancellaria; 9, Acar domingensis; 10, Limopsis paucidentata; 11, Paracratis borealis; 12, Crassostrea mangle; 13, Abra americana; 14, Choristodon typicum; 15, Pseudochama radians; 16, Polyschides quadridentatum. New synonyms: 1, Fissurella clenchi; 2, Natica castanea; 3, Cyphoma macumba; 4, Voluta thevenini; 5, Pleuroploca granulilabris; 6, Polyschides xavante; 7, Polyschides noronhensis. New combinations: 1, Falsilunatia limbata; 2, Goniofusus damasoi. Redescriptions/taxonomy commented: 1, Nacella mytilina; 2, Fissurella rosea; 3, Calliostoma depictum; 4, Depressiscala nautlae; 5, Depressiscala niditella; 6, Scala scipio; 7, Abyssochrysos brasilianus; 8, Caecum antillarum; 9, Cheilea equestris; 10, Sinum perspectivum; 11, Pseudocyphoma intermedium; 12, Cyphoma signatum; 13, Coronium; 14, Voluta ebraea; 15, Nassarius albus; 16, Goniofusus brasiliensis; 17, Goniofusus strigatus; 18, Leucozonia nassa; 19, Anachis lyrata; 20, Terebra gemmulata; 21, Turbonilla obsoleta; 22, Brevinucula verrillii; 23, Tindaria amabilis; 24, Bathyarca glomerula; 25, Bentharca asperula; 26, Crassostrea mangle; 27, Pinna carnea; 28, Kalolophus antillarum; 29, Warrana besnardi; 30, Chama cristella; 31, Hiatella solida; 32, Cyrtopleura costata; 33, Polyschides tetraschistus. Extension of distribution: 1, Amaea mitchelli; 2, Tindaria cytherea; 3, Lyratellina juttingae. Change of genus: 1, Naticarius cayennensis. New replacement name: 1, Turbonilla absalaoi. Validity of species discussed: 1, Cheilea atlantica; 2, Cheilea americana. Families revalidated: 1, Trichotropidae. Fossil species proposed to remain fossil-only: 1, Cranopsis granulata; 2, Iselica globosa; 3, Limopsis aurita; 4, Limopsis minuta; 5, Abra longicallus. All 104 nomenclatural acts are thoroughly justified, discussed, and mostly illustrated. Several of these acts have co-authors. https://zoobank.org/6DB1BC9F-A0E9-4C36-8BEF-EF8A375F0693. malacofauna purpose descriptions 1 iguypis 2 mirim 3 soror 4 quasilissus 5 jonesae 6 striotis 7 sterica 8 melodica 9 rocas 10 phoenix 11 etherius 12 rendatus 13 joculosa 14 potiguar 15 pifius 16 overa 17 ipepa 18 ruru 19 pehenguis 20 arcadia 21 celeris 22 electra 23 ynous 24 trindadis 25 nembia 26 pereria 27 amazonica 28 culmen 29 apocalyptica 30 implexa 31 marisqueira 32 angelicalis 33 angulosa 34 obtura revalidated itapema watsoni tibia iheringi veleda chilensis anomala cancellaria domingensis paucidentata borealis mangle americana typicum radians quadridentatum synonyms clenchi castanea macumba thevenini granulilabris xavante noronhensis combinations limbata damasoi Redescriptionstaxonomy Redescriptions commented mytilina rosea depictum nautlae niditella scipio brasilianus antillarum equestris perspectivum intermedium signatum Coronium ebraea albus brasiliensis strigatus nassa lyrata gemmulata obsoleta verrillii amabilis glomerula asperula carnea besnardi cristella solida costata tetraschistus distribution mitchelli cytherea juttingae genus cayennensis name absalaoi discussed atlantica Trichotropidae fossilonly fossil only fossil-only granulata globosa aurita minuta longicallus justified illustrated coauthors. coauthors co authors. authors co-authors https//zoobank.org/6DB1BC9FA0E94C368BEFEF8A375F0693. httpszoobankorg6DB1BC9FA0E94C368BEFEF8A375F0693 httpszoobankorgDBBCFAECBEFEFAF https //zoobank.org/6DB1BC9F A0E9 4C36 8BEF EF8A375F0693. zoobank org 6DB1BC9F EF8A375F0693 DB BC F A E C BEF EF https://zoobank.org/6DB1BC9F-A0E9-4C36-8BEF-EF8A375F0693 6DB1BC9FA0E94C368BEFEF8A375F0693 FA BEFEF https//zoobank.org/6DB1BC9FA0E94C368BEFEF8A375F0693 httpszoobankorg httpszoobankorg6DB1BC9FA0E94C368BEFEF8A375F069 zoobankorg6DB1BC9F zoobankorgDBBCF AE A0E 4C3 EFAF DBBCF EF8A375F069 https://zoobank.org/6DB1BC9F-A0E9-4C36-8BEF-EF8A375F069 DBBCFAECBEFEFAF 6DB1BC9FA0E94C368BEFEF8A375F069 https//zoobank.org/6DB1BC9FA0E94C368BEFEF8A375F069 httpszoobankorg6DB1BC9FA0E94C368BEFEF8A375F06 zoobankorg 4C EF8A375F06 https://zoobank.org/6DB1BC9F-A0E9-4C36-8BEF-EF8A375F06 6DB1BC9FA0E94C368BEFEF8A375F06 https//zoobank.org/6DB1BC9FA0E94C368BEFEF8A375F06 httpszoobankorg6DB1BC9FA0E94C368BEFEF8A375F0 EF8A375F0 https://zoobank.org/6DB1BC9F-A0E9-4C36-8BEF-EF8A375F0 6DB1BC9FA0E94C368BEFEF8A375F0 https//zoobank.org/6DB1BC9FA0E94C368BEFEF8A375F0 httpszoobankorg6DB1BC9FA0E94C368BEFEF8A375F EF8A375F https://zoobank.org/6DB1BC9F-A0E9-4C36-8BEF-EF8A375F 6DB1BC9FA0E94C368BEFEF8A375F https//zoobank.org/6DB1BC9FA0E94C368BEFEF8A375F