Abstract: This study aimed to analyze the glue line thickness effect and its relation with the density and anatomical characteristics of eucalyptus wood. Thus, the thickness of main and secondary glue lines was measured as well as their interaction with the apparent density of elements glued with resorcinol-formaldehyde (RF) and castor oil polyurethane (CP) adhesives. Anatomical wood characterization of Eucalyptus grandis × Eucalyptus urophylla was performed by correlating glue line thickness. According to normative instruction, specimens were produced for delamination tests. The experiment was conducted in a completely random 2 × 2 design factorial scheme (two classes of wood apparent density and two adhesives). Pearson correlation (t < 0,01) was performed among variables. It was found that there was adhesive penetration into vessels and rays of wood. Glue line thickness was higher in woods with density higher than to 580 kg/m3 glued with RF adhesive. There was a low correlation between wood density and vessel diameter to main and secondary glue lines (t < 0,01).

Botos-da-Amazônia (ou botos; Inia geoffrensis) são atualmente provisionados com alimentos para uso em atrações turísticas em cinco locais da Amazônia Brasileira. Apesar dos efeitos negativos associados com interações homem-golfinho já terem sido reportados, esta atividade foi recentemente regulamentada e licenciada no Parque Nacional de Anavilhanas, em Novo Airão, estado do Amazonas, Brasil. No presente trabalho apresentamos uma avaliação detalhada da percepção da comunidade local com relação aos possíveis impactos socioeconômicos deste turismo em Novo Airão. Em abril de 2011, 45 entrevistas foram realizadas com habitantes do município. Um pequeno segmento de Novo Airão possui a percepção de que são atualmente dependentes do turismo de alimentação artificial de botos. Apesar disso, os benefícios econômicos dessa atividade controversa aparentemente não são compartilhados entre a maior parte dos habitantes, e este turismo é percebido como gerando diversos efeitos negativos. Nós concluímos que se esta atividade fosse banida ou modificada para uma atividade turística menos impactante, esta ação provavelmente não iria afetar significativamente a vida da população em geral.

Botos (Inia geoffrensis) are currently provisioned for use in tourist attractions in five sites in the Brazilian Amazon. Despite the known negative effects associated with human-wild dolphin interactions, this activity has been regulated and licensed in the Anavilhanas National Park in Novo Airão, Amazonas State, Brazil. We present an updated evaluation of the perception of the local community concerning the possible socioeconomic impacts of this tourism in Novo Airão. In April 2011, 45 interviews were conducted with inhabitants. A small segment of Novo Airão perceives currently itself as being economically dependent on the botos feeding tourism. Despite that, the economic benefits of this controversial activity apparently are not shared among most inhabitants, and botos feeding tourism is perceived as generating diverse negative effects. We conclude that if the activity was banned or modified into a less impacting tourist activity, this action would probably not majorly affect the lives of the general population.

Chinchilla lanígera is a rodent native to Chile which is bred for commercial purposes. Parasitic diseases, mainly giardiasis, may cause clinical and sanitary problems and lead to production and economic losses. Fecal samples were collected from 220 chinchillas pertaining to a commercial breeding facility in southern Brazil and from 35 chinchillas from Las Chinchillas National Reserve in Chile. All samples were analyzed using the method proposed by Faust et al. Positive samples for Giardia cysts amounted to 31.37% (80/255); 36.36% (80/220) was recovered from the commercial breeding facility. The rate of samples with over 5 cysts/field was equivalent to 4.55% (10/220). All of the samples collected from the National Reserve were negative for Giardia sp. No association was found between positive rates for Giardia sp. and the age of chinchillas.

Chinchilla lanígera é um roedor proveniente do Chile e sua criação é com fins comerciáis. As doencas parasitarias, principalmente giardíase podem causar problemas clínicos e sanitarios, causando perdas produtivas e económicas. Foram colhidas amostras de fezes de 220 chinchilas de urna criação comercial no sul do Brasil e 35 amostras de chinchilas da Reserva Nacional las Chinchillas no Chile, e submetidas ão método de Faust e colaboradores. O total de amostras positivas para cistos de Giardia sp. foi de 31,37%(80/255); da criação comercial foi de 36,36%(80/220). O número de amostras que apresentaram mais de 5 cistos/campo foi 4,55%(10/220). Todas as amostras dos animáis da Reserva foram negativas. Não houve associação entre a positividade e a faixa etária dos animáis analisados.