Results 31 to 40 of about 1,024 (135)

Utilização de animais em pesquisas: breve revisão da legislação no Brasil

Revista Bioética
Resumo A utilização de animais para fins científicos configura prática histórica na civilização humana, mas gera polêmica em sociedades preocupadas com proteção dos animais. No Brasil, até 2008, não havia norma ou lei que regulamentasse especificamente a
Mariana Vasconcelos Guimarães, José Ednésio da Cruz Freire, Lea Maria Bezerra de Menezes   +2 more
doaj   +1 more source

Disentangling Environmental, Spatial and Niche Influences on Fish Beta Diversity Along the Sandy Beaches of an Amazonian River

Freshwater Biology, Volume 71, Issue 7, July 2026.
ABSTRACT Beta diversity is an important descriptor of community structuring and it plays a crucial role for understanding the patterns and processes shaping biodiversity at multiple spatial extents. We investigated the influence of local, spatial, landscape factors and niche characteristics on fish beta diversity along the Acre River in Acre, Brazil ...
Ronaldo S. Silva, Lucas P. Oliveira, Naraiana L. Benone, Jean C. G. Ortega, Antonio A. Jardim Jr, Lídia B. Seabra, Fabiano Corrêa, Lisandro J. S. Vieira, Robert M. Hughes, Luciano F. A. Montag   +9 more
wiley   +1 more source

Trabalho com camundongos em pesquisa imunológica. Ligação, emoções e cuidado

RECIIS, 2008
Este ensaio descreve e reflete sobre algumas características típicas da relação entre pesquisadores e animais nos cená- rios de experimentação animal científica.
Daniel Bischur
doaj   +1 more source

Percepção de equipes laboratoriais quanto a questões de bem-estar animal

Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2016
As equipes laboratoriais controlam diversas características do ambiente dos animais utilizados em pesquisas. Portanto, suas atitudes têm grande influência no bem-estar animal (BEA) e nos resultados obtidos.
B.G.F. Deguchi, P.R. Tamioso, C.F.M. Molento   +2 more
doaj   +1 more source

Local Environmental Variables Predict Fish Species Richness and Composition in Sand Beaches of a Neotropical River

River Research and Applications, Volume 41, Issue 9, Page 1949-1958, November 2025.
ABSTRACT Local and regional species diversity is influenced by historical factors, resource availability, biotic interactions, the presence of resources, and adequate environmental conditions. We evaluated the effects of local environmental variables and spatial structure on fish species richness and composition along sandy beaches of a Neotropical ...
Ronaldo Souza da Silva, Jean Carlo Gonçalves Ortega, Lucas Pires de Oliveira, Vinicius Guerra, Werther Pereira Ramalho, Fabiano Corrêa, Mariana Costa Fratari, Lisandro Juno Soares Vieira, Luciano Fogaça Assis de Montag   +8 more
wiley   +1 more source

Larger Fish Upstream: Testing the Drivers of Fish Longitudinal Size Distribution in a Stream

Freshwater Biology, Volume 70, Issue 7, July 2025.
ABSTRACT The “larger fish upstream pattern” (LFUP), where fish size increases from river mouths toward headwaters, is widely documented, but the drivers remain unclear. Here, we tested whether LFUP is related to species reproductive strategies or environmental factors (differential growth, predation, competition). Using historical data (1994–1998) from
Pedro Wolf, Piatã Marques, Rosana Mazzoni   +2 more
wiley   +1 more source

Effectiveness of cyanoacrylate adhesive in rabbit aortorrhaphy

Jornal Vascular Brasileiro, 2015
BACKGROUND: Even when properly performed, arterial sutures are not always absolutely hemostatic. Tissue sealants and adhesives have become available that can be used to complete sutures, preventing hemorrhage problems.OBJECTIVES: To evaluate the ...
Marcus Vinicius Henriques de Carvalho, Evaldo Marchi, Mario Pantaroto   +2 more
doaj   +1 more source

Native seed collector networks in Brazil: Sowing social innovations for transformative change

People and Nature, Volume 6, Issue 5, Page 1905-1921, October 2024.
Abstract To investigate whether and how Social Innovation (SI) can contribute to transformative change, we explored nine Native Seed Collectors Networks (NSCNs) in Brazil. Employing Social Network Analysis, we delved into the organisational structure of four NSCNs. Additionally, we identified five instances of social innovations (SIs) using the guiding
Aurelio Padovezi, Cristina Adams, Robin L. Chazdon, Maria Alice Mendonça, Laura Secco, Eduardo Malta Campos‐Filho, Alexandre Sampaio, Edjane Damasceno, Natalia Albuquerque, Fabricia Santarem, Maria Eduarda Camargo, Fatima Pinã‐Rodrigues   +11 more
wiley   +1 more source

Different Intensities of Treadmill Running Exercise do Not Alter Melatonin Levels in Rats

Clinical and Biomedical Research, 2011
Background: Regular and moderate exercise has been considered an interesting neuroprotective strategy. Our research group demonstrated that a protocol of moderate exercise on a treadmill reduced, while a protocol of high-intensity exercise increased in ...
Ionara Rodrigues Siqueira, Felipe dos Santos Moysés, Viviane Elsner, Cristiane Farias, Liciane Medeiros, Iraci Lucena da Silva Torres   +5 more
doaj  

Sentiency, bioethics and animal welfare: concepts that need to be discussed in higher education to change the teaching and researching paradigm

Semina: Ciências Agrárias, 2015
This study investigated the knowledge of students of Veterinary Medicine and Biological Sciences of the State University of Northern Paraná, Campus Luiz Meneghel, on the ethical and legal guidelines of animal experimentation, as well as the possibility ...
Anderson do Prado Duzanski, Ana Paula Millet Evangelista dos Santos, Mariza Fordellone Rosa Cruz, Emília de Paiva Porto, Petrônio Pinheiro Porto, Marcos Augusto Alves da Silva, Ellen de Souza Marquez, Carlos Frederico Gitsio Klier Teixeira da Silva   +7 more
doaj   +1 more source