Results 71 to 80 of about 15,771 (190)

Adaptive variation in beach mice produced by two interacting pigmentation genes.

PLoS Biology, 2007
Little is known about the genetic basis of ecologically important morphological variation such as the diverse color patterns of mammals. Here we identify genetic changes contributing to an adaptive difference in color pattern between two subspecies of ...
Cynthia C Steiner, Jesse N Weber, Hopi E Hoekstra   +2 more
doaj   +1 more source

Fire‐induced shifts in activity patterns of predators and prey in the Brazilian Pantanal

The Journal of Wildlife Management, Volume 90, Issue 6, August 2026.
Using camera trap data, we observed that 5 of 6 prey species showed statistically significant changes in temporal activity patterns, while jaguars were the only predator species to adjust activity when comparing pre‐fire and post‐fire periods in an isolated rocky formation in the Pantanal region.
Sergio Eduardo Barreto de Aguiar, Grasiela Edith Oliveira de Porfirio, Leonardo França do Nascimento, Josiel de Oliveira Coelho, Mariana Alves Carvalho Queiroz, Geovani Vinco Tonolli, Wener Hugo Arruda Moreno, Diego Francis Passos Viana, Rocío Bardales, Matthew Hyde, Ricardo Daniel Ortiz‐Hoyos, Nayara Yoshie Sano, Filipe Martins Santos   +12 more
wiley   +1 more source

The Clinical Phenotype and Genetic Analysis of Monogenic Non Syndromic Obesity Caused by MC4R Gene Variation

Molecular Genetics &Genomic Medicine, Volume 14, Issue 8, August 2026.
A novel MC4R mutation (c.185A > G) was identified in a 10‐year‐old girl with severe obesity and hyperinsulinemia. Retrospective analysis of 64 pediatric cases revealed that mutation location influences BMI, modulated by underlying disease status, demonstrating that the genotype–phenotype relationship in MC4R‐associated obesity is clinically context ...
Xin Li, Xiaotian Wang, Xin Liu, Shuping Wang, Wentao Yang   +4 more
wiley   +1 more source

Long‐term changes in functional diversity and its implications for mammalian conservation and ecological restoration in a grassland ecosystem

Functional Ecology, Volume 40, Issue 8, Page 2379-2391, August 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Paleontological data provide information on natural environments prior to human influence, which are useful for tracking changes in ecosystem functioning through time. During the Late Pleistocene, about 10% of terrestrial mammalian species were extinct in South America.
Thayara S. Carrasco, Catalina Pimiento, Tiago B. Quental, Pedro L. Godoy   +3 more
wiley   +1 more source

Aspectos morfológicos do saco vitelino em roedores da subordem Hystricomorpha: paca (Agouti paca) e cutia (Dasyprocta aguti) Morphological aspects of yolk sac from rodents of Hystricomorpha subordem: paca (Agouti paca) and agouti (Dasyprocta aguti)

Pesquisa Veterinária Brasileira, 2008
Este trabalho visou caracterizar macro e microscopicamente o saco vitelino em pacas (Agouti paca) e cutias (Dasyprocta aguti) no início de gestação. Três embriões/fetos de pacas e três de cutias foram utilizados para a análise do saco vitelino, durante ...
Rogério Arcuri Conceição, Carlos Eduardo Ambrósio, Daniele S. Martins, Ana Flávia Carvalho, André Luis R. Franciolli, Marcia Rita F. Machado, Moacir F. Oliveira, Maria Angélica Miglino   +7 more
doaj   +1 more source

Informal supply chains of wild meat from rural Amazonia and food security in an urban center

Conservation Biology, Volume 40, Issue 4, August 2026.
Abstract Iquitos, the most populated city in the Peruvian Amazon, is a hub in the regional supply chain of wild meat and supplies urban consumers. Studies on wild meat consumption have focused primarily on markets, limiting the scope of species considered to those that are economically valuable and potential inferences from those data.
Fiorella Briceño Huerta, Michael P. Gilmore, Mark Bowler, Brian M. Griffiths   +3 more
wiley   +1 more source

Agouti paca

, 1993
Agouti paca (Linnaeus, 1766). Syst. Nat., 12th ed., 1:81. TYPE LOCALITY: French Guiana, Cayenne. DISTRIBUTION: SE San Luis Potosi (Mexico) to Paraguay, Guianas, and S Brazil. Introduced into Cuba. STATUS: CITES - Appendix III (Honduras). SYNONYMS: alba, fulvus, guanta, mexicanae, sublaevis, subniger, venezuelica.
openaire   +2 more sources

An Autochthonous Case of Echinococcus vogeli Rausch & Bernstein, 1972 Polycystic Echinococcosis in the State of Rondônia, Brazil

Memorias do Instituto Oswaldo Cruz, 2002
The present case report refers to a patient from the State of Rondônia, North region of Brazil, attended with clinical suspicion of hepatic echinococcosis.
Rosângela Rodrigues-Silva, José Resende V Peixoto, Regina Maria Figueiredo de Oliveira, Roberto Magalhães Pinto, Delir Corrêa Gomes   +4 more
doaj   +1 more source

The evidence of metabolic-improving effect of metformin in Ay/a mice with genetically-induced melanocortin obesity and the contribution of hypothalamic mechanisms to this effect.

PLoS ONE, 2019
In diet-induced obesity, metformin (MF) has weight-lowering effect and improves glucose homeostasis and insulin sensitivity. However, there is no information on the efficiency of MF and the mechanisms of its action in melanocortin-type obesity.
Kira Derkach, Irina Zakharova, Inna Zorina, Andrey Bakhtyukov, Irina Romanova, Liubov Bayunova, Alexander Shpakov   +6 more
doaj   +1 more source

Epigenome modulated xenobiotic detoxification pathways control DMBA-induced breast cancer in agouti Avy/a mice

Epigenetics, 2019
Environmental xenobiotics with genotoxic activity are carcinogenic. However, individual differences in the susceptibility to xenobiotic-induced breast cancer remain unclear. Since epigenetic modifications could control the expression of metabolic enzymes,
Simbarashe Mazambani, Madeleine Morris, Venugopalan Cheriyath   +2 more
doaj   +1 more source