ABSTRACT Namalycastis abiuma has been recorded as a worldwide distributed species, found in most tropical and subtropical mangroves and estuarine environments. However, this status has been questioned in several publications, which indicate that several distinct species are being identified under the name N. abiuma. In this study, we perform a morphological analysis, along with a series of species delimitation tests and a phylogenetic analysis-using the molecular marker 16S-to evaluate whether analyzed populations previously identified as Namalycastis abiuma belong to the same species. We used sequences from the GenBank database in the analysis, as well as six newly sequenced specimens collected from the coast of Brazil, two of them from the N. abiuma type-locality. For species delimitation, we applied the Generalized Mixed Yule Coalescent (GMYC), the Assemble Species by Automatic Partitioning (ASAP), and the Multi-rate Poisson Tree Processes (mPTP) tests. Results from GMYC and ASAP suggest that Namalycastis abiuma may be endemic to the type-locality and that all other populations studied represent a second distinct species. However, mPTP indicates that all Namalycastis species included should be grouped into one single species. The mPTP results seem to be biased due to data limitation as it showed poor statistical support. Our morphological data, especially on the shape and dentition of the sub-neuroacicular falciger blades, support the GMYC and ASAP results, suggesting restricted endemism for Namalycastis abiuma. Based on these results, we conclude that N. abiuma is restricted to its type-locality and we provide a description of a new species, Namalycastis lanai sp. nov. occurring in Brazilian waters from 22°S to 27°S, including, at its southern range, an overlap with N. abiuma at Florianópolis. Finally, we provide a key to all Namalycastis species found in Brazil. environments However publications N study analysis analysisusing using 16Sto Sto 16S S Brazil typelocality. typelocality type locality. locality GMYC, , (GMYC) ASAP, (ASAP) Multirate Multi rate (mPTP subneuroacicular sub neuroacicular blades sp nov 22S 22 27S 27 27°S including range Florianópolis Finally (GMYC (ASAP 2

ABSTRACT This article shows a comprehensive bibliometric analysis of the literature on polychaetes from Brazil, with a focus on the growth of the field, publication venues, citation patterns, the collaboration among the Brazilian community and foreign researchers, and the main research topics over time. The analysis was based on a corpus of 568 articles published in 144 journals, covering a period from 1966 to 2022. The results reveal significant growth in the field, with a surge in publications particularly in the last decade. The top journals for publishing include Zootaxa, JMBA, and Zoologia. However, despite this growth, the overall impact of the research output remains somewhat limited, with most articles receiving relatively low numbers of citations, and those with more citations have broader research questions. This research community directed its efforts especially to taxonomy and phylogenetics research, community ecology, and physiology (ecotoxicology). These topics formed a common ground for more specialized themes. International collaboration was driven by research specialization, better infrastructure, and funding of developed countries. However, seeking collaborations with countries from the global south can also enrich the research conducted by the Brazilian community and stimulate new scientific inquiries. Embracing greater creativity and audacity as well as pursuing common goals, should yet enhance the quality of scientific research and sustain the remarkable growth and consolidation of this renowned research community. Brazil field venues patterns researchers time 56 14 196 2022 decade Zootaxa JMBA Zoologia However limited questions ecology ecotoxicology. ecotoxicology . (ecotoxicology) themes specialization infrastructure inquiries goals 5 1 19 202 (ecotoxicology 20 2

Abstract The freshwater/brackish amphipod Quadrivisio lutzi inhabits coastal lagoons, highly unstable environments subject to sudden inflow of marine water. Our aim was to evaluate how the genetic composition varies in these populations. Brazilian populations were compared by 16S rRNA and COI gene sequences. The genetic structure of four Rio de Janeiro amphipod populations was evaluated during the period of 2011-2019 by COI. Rio de Janeiro population was compared with Alagoas and São Paulo populations, which was genetically distinct, at species level (16S, d > 7%; COI, d >14%). The genetic structure in Rio de Janeiro showed the Imboassica subpopulation as the most divergent (Imboassica & Carapebus, F ST = 0.238), followed by Lagamar population (Lagamar & Carapebus, F ST = 0.049). The geographic distance and urbanization around these lagoons explain the degree of genetic isolation of these amphipod subpopulations. Paulista and Carapebus populations were not structured. Temporal variation in haplotype number and frequency were evident in both populations that were evaluated (Carapebus and Imboassica). Changes in salinity and water volume variation at these lagoons may be responsible for the observed changes in genetic composition, which may be the results of genetic drift effects over temporally fluctuating size subpopulations, without loss of genetic diversity. freshwaterbrackish freshwater brackish S sequences 20112019 2011 2019 2011-201 distinct 16S, (16S 7% 7 >14%. 14 >14% . >14%) 0.238, 0238 0.238 , 0 238 0.238) 0.049. 0049 0.049 049 0.049) subpopulations structured Imboassica. Imboassica) diversity 2011201 201 2011-20 1 >14 023 0.23 23 004 0.04 04 201120 20 2011-2 >1 02 0.2 2 00 0.0 20112 2011- 0.

We present the spatial distribution and abundance of the holoplanktonic family Iospilidae (Annelida, Polychaeta), along part of the eastern Brazilian coast, and its relation to environmental variables in the region. Samples were obtained from two collections made in 1998 and 2000 between 13°-25°S, and 28°-42°W, on the Brazilian coast, between the Bay of Todos os Santos (BA) to Cape São Tomé (RJ). 216 stations were selected, covering the continental shelf, slope and oceanic regions, where plankton samples were collected for water and nutrient analysis. We analyzed environmental variables: temperature, salinity, dissolved oxygen, pH, ammonia, nitrite, nitrate, phosphate, silicate and chlorophyll-a. 363 individuals were collected, identifying two species, viz., Phalacrophorus uniformis and Phalacrophorus pictus, the first being the most abundant, with 354 individuals, while only nine specimens of P. pictus were found. Both species are mainly distributed in the oceanic region stations. The distribution of P. uniformis was related to the concentration of phosphate and nitrate. Significant differences between samples and between sectors of the continental shelf and oceanic region were found.

Se presenta la distribución espacial y abundancia de la familia holoplanctónica Iospilidae (Annelida, Polychaeta), a lo largo de la costa oriental brasileña, y su relación con variables ambientales de la región. Las muestras fueron obtenidas de dos muestreos realizados en 1998 y 2000 entre 13°-25°S, y 28°-42°W, en la costa brasileña, entre Bahía de Todos los Santos (BA) y el cabo de São Tomé (RJ). Se seleccionaron 216 estaciones, cubriendo las regiones de plataforma continental, talud y oceánica, donde se colectaron muestras de plancton y de agua para el análisis de nutrientes. Se analizaron las variables ambientales de temperatura, salinidad, oxigeno disuelto, pH, amonio, nitrito, nitrato, fosfato, silicato y clorofila-a. Se recolectaron 363 individuos, identificandose dos especies, viz., Phalacrophorus uniformis y Phalacrophorus pictus, siendo la primera la más abundante, con 354 individuos, y la segunda con sólo nueve especímenes Ambas especies se distribuyeron principalmente en las estaciones de la región oceánica. La distribución de P. uniformis estuvo relacionada con la concentración de fosfato y nitrato. Se encontraron diferencias significativas entre los muestreos, así como entre los sectores de plataforma continental y la región oceánica.

Five species of Scolelepis have been reported for the Brazilian coast. This study raises this number, with two new records: S. acuta Treadwell, 1914, originally from Eastern Pacific, and Scolelepis andradei Delgado-Blas, Díaz & Liñero-Arana, 2009, from the Caribbean Sea. Furthermore, two species were found to have an expanded geographic range along the Brazilian coast: Scolelepis lighti Delgado-Blas, 2006 and Scolelepis goodbodyi Jones, 1962.

Entre os poliquetas, os Spionidae são um dos táxons mais abundantes e diversos. O gênero Scolelepis é um dos mais abundantes em águas rasas, cujos representantes apresentam uma ampla distribuição geográfica. Embora tenham sido referidas sete espécies para a costa brasileira, há uma discussão quanto à correta identificação e a possibilidade de se tratar de um complexo específico. O objetivo deste trabalho foi efetuar o levantamento das espécies do gênero Scolelepis encontradas em praias do estado do Rio de Janeiro, Brasil. Foram encontradas e caracterizadas duas espécies: S. chilensis, muito abundante e ocorrendo em diversas praias e S. goodbodyi com uma distribuição mais restrita.

Spionidae is one of the most abundant and diverse taxa among polychaetes. Scolelepis is one of the most abundant genus in shallow waters being widely distributed worldwide. Seven Scolelepis species have been reported to the Brazilian coast, but their taxonomy should be verified owing to a discussion on correct species identification and the possibility of being a species complex. The aim of this study was to make an inventory the species of the genus Scolelepis found in the beaches of Rio de Janeiro State, Brazil. Two species were found: S. chiliensis, very abundant and occurring in several beaches and S. goodbodyi with a more restricted distribution.

Um novo Mini Box Corer (MBC-GEAMB) foi desenvolvido para amostragens de fundo em águas rasas antárticas até 100 metros de profundidade, a partir de embarcações pequenas. Consiste em uma caixa de aço inox destacável com uma área total de amostragem de 0,0625 m², e um braço de fechamento com uma lâmina destacável, sem um suporte externo. MBC permite a amostragem estratificada do sedimento de fundo com amostras de qualidade comparáveis àquelas obtidas através de mergulho autônomo. Uma comparação entre o MBC-GEAMB e um van Veen de área 0,056 m²(VV) foi realizada utilizando a composição da macrofauna bentônica na Baía do Almirantado, (Ilha Rei George, Antarctica). Amostragens com MBC e VV foram realizadas em três profundidades (20, 30 e 60m) em dois locais. As densidades totais obtidas com o MBC foram até 10 vezes maiores que as obtidas com o van Veen. Amostragens com VV tendem a subamostrar a abundância faunística em comparação com amostragens realizadas com o MBC. O MBC apresentou melhor capacidade de resolução para discriminar locais diferentes em relação à densidade total da macrofauna. O MBC pode ser utilizado como um amostrador remoto eficiente em águas rasas onde a amostragem por mergulho não é plausível.

A new Mini Box Corer (MBC-GEAMB) was developed for bottom sampling in Antarctic shallow waters down to 100 m depth from a small vessel. It consists of a detachable stainless steel box with a total sampling area of 0.0625 m², and a closing arm with a detachable blade without an external frame. MBC allowed stratified bottom sampling and good quality samples comparable to those obtained through diving. A comparison between the MBC-GEAMB and a 0.056 m²van Veen grab (VV) was undertaken for the benthic macrofaunal composition in Admiralty Bay, King George Island (Antarctica). MBC and VV samples were taken from three depths (20, 30 and 60m) in two sites. Total densities sampled with the MBC were up to 10 times higher than those obtained with van Veen grab. VV samples might lead to faunistic abundance underestimation compared to the MBC samples. Besides, MBC showed a higher performance on discriminating different sites as regards total macrofaunal density. It is suggested that MBC could be employed as an efficient remote sampling device for shallow-waters where direct sampling by SCUBA was not advisable.

A procura por alimentos e derivados que não sejam utilizados na dieta humana ou na alimentação de animais monogástricos, juntamente com formas de suplementação, são aspectos importantes na busca de fontes alternativas para alimentação de ruminantes e redução no tempo de abate. Com este trabalho teve-se como objetivo avaliar o efeito de níveis crescentes de concentrado na engorda de novilhos nelore suplementados em pasto durante o período das águas. O experimento foi realizado na Fazenda Vitorinha, de propriedade da Fundação de Apoio ao Ensino, Pesquisa e Extensão/FAEPE, ligada à Universidade Federal de Lavras/UFLA, em Lavras, região sul do Estado de Minas Gerais, entre os meses de janeiro a maio de 2001. Foram utilizados 24 animais mestiços nelores, machos, inteiros, com idade média de 17 meses e peso vivo médio de 308,0 kg. Durante o período experimental, os animais foram alojados em uma pastagem de Brachiaria decumbens, com área de 11,2 ha, com disponibilidade média de 5400 kg MS/ha no início do período. Os tratamentos constituíram-se de níveis crescentes de concentrado, calculados como percentual do peso vivo: T1- 0%; T2- 0,15%; T3- 0,30%; T4- 0,45%. O experimento foi delineado em blocos casualizados, com peso vivo inicial como fator de blocagem, sendo 6 blocos e 4 tratamentos, totalizando 24 parcelas experimentais. Para análise dos dados, utilizou-se o software estatístico SISVAR (Sistema de Análise de Variância de Dados Balanceados). Não houve diferença significativa para ganho de peso diário (P<0,05). Todavia, quando se considera a relação receita: despesa, a suplementação mostrou-se economicamente viável em função do ganho adicional conseguido pelo T4 (0,45% do PV).

The demand for foods and its derivates that would not be used in the human diet or in the monogastric animals diet in addition with supplement forms are important aspects in the search for alternative sources for ruminant nutrition and reduction in the slaughtered time. This work had as objective to evaluate growing levels of concentrate in the fattening of nelore bullock gazing supplemented during the raining seazon. The experiment was carried out in the Vitorinha farm, property of Fundação de Apoio ao Ensino, Pesquisa e Extensão - FAEPE, of the Universidade Federal de Lavras - UFLA, in Lavras, South region of Minas Gerais State from January to May of 2001. It was used 24 nelore steers average with age of 17 months old and body weight average of 308,0 Kg. During the experimental period, the animals were kept in a pasture of Brachiaria decumbens of 11,2 ha with average production of 5,400Kg DM/ha in the beginning of the experimental period. The treatments were constituted of increasing levels of concentrate calculated as body weight percentage as follow: T1 - 0%; T2 - 0,15%; T3 - 0,300/o; T4 - 0,45%. lhe experiment was done in casualized blocks design using initial body weight as block factor, being 6 blocks and 4 treatments totalizing 24 experimental units. The data were analyzed using the statistic software SISVAR. (Variance Analysis System for Balanced Data). There was not significant difference in the body weight daily gain (P<0,05) therefore when considering the rate income:cost, supplementation shown itself economically viable in function of the additional gain obtained.

El macrobentos de estanques de cultivo de Penaeus subitilis y Penaeus schmitti se estudió en la costa nordeste de Brasil durante 12 semanas. El poliqueto Laeonereis culveri (2 433 ind/0.1m2) y el anfípodo Grandidierella bonnieroides (2 726 ind/0.1m2) fueron intensamente depredados por los peneidos. Ningún individuo de G. bonnieroides sobrevivió más de seis semanas: en el tiempo restante L. culveri, que también puede reclutarse en el periodo, fue el principal recurso natural alimenticio disponible.

Foram estudados os padrões de densidade e diversidade específica dos anelídeos poliquetas da plataforma continental norte do Estado de São Paulo. A densidade de poliquetas foi maior na plataforma interna, especialmente na radial Sul. Nas radiais Central e Norte foram observadas variações temporais nas isóbatas de 20 e 35 m, com valores maiores no verão. Os valores de diversidade específica foram preponderantemente mais baixos na plataforma externa, no verão, e altos, no inverno, enquanto a plataforma interna apresentou padrões de diversidade mais complexos com flutuações sazonais em baixas profundidades. As densidades foram maiores em sedimentos pelíticos. Areias finas apresentaram valores mais altos de diversidade e riqueza. Sedimentos mais grossos apresentaram eqüitatividades maiores, porém, baixas diversidades. Os valores maiores de diversidade, nas estações mais rasas, foram devidos ao maior número de espécies e nas estações profundas, à maior eqüitatividade.

Density and diversity patterns of the polychaetous annelids from the northern continental shelf of São Paulo State, Brazil, were studied. Polychaetous densities were higher in the inner shelf, mainly in the southern transect. Temporal variations were observed at the northern and central transects in the 20 and 35 m isobaths, with higher summer values. Diversity values were lower in summer and higher during winter in the outer shelf. The inner shelf presented more complex diversity patterns with seasonal fluctuations in lower depths. Muddy sediments presented higher densities; diversity and richness were higher in fine sand sediments. Coarser sediments presented the highest values of evenness but low diversity. The higher diversity values in the shallowest stations were due to the higher number of species and in the deepest stations to the great evenness.