Results 41 to 50 of about 17,481 (225)

First Non‐Invasive Monitoring of Fecal Steroids in Greater Caribbean Manatees (Trichechus manatus manatus)

open access: yesZoo Biology, EarlyView.
This study established the first fecal hormonal reference values (P4/E2) for the Greater Caribbean manatee. Using non‐invasive ELISA, the authors found no significant differences between mature and immature females, highlighting that long‐term monitoring and ultrasounds are essential to fully understand their complex reproductive cycles.
Vanessa Bermúdez‐Cardona   +3 more
wiley   +1 more source

O SISTEMA CARÓTICO DO ENCÉFALO DE PRIMATA NEOTROPICAL, ANATOMIA DA ARTÉRIA INTER-HEMISFÉRICA (Cebus apella, Linnaeus, 1766)

open access: yesCiência Animal Brasileira, 2006
Trinta hemisférios cerebrais do primata Cebus apella foram estudados. Os cérebros foram injetados com solução de látex corado (neoprene 450 e sulvinil corante), fixados em formaldeído a 10% e dissecados sob lupa óptica para fins de estudo da morfologia ...
Jussara Rocha Ferreira   +3 more
doaj   +3 more sources

Nutritional and health status of woolly monkeys [PDF]

open access: yes, 2008
Woolly monkeys (Lagothrix lagotricha and L. flavicauda) are threatened species in the wild and in captivity. Numerous zoological institutions have historically kept Lagothrix lagotricha spp., but only a few of them have succeeded in breeding populations.
Ange-van Heugten, K.D.   +3 more
core   +2 more sources

Demographic buffering in natural populations: A multi‐level perspective

open access: yesJournal of Animal Ecology, EarlyView.
We introduce a multi‐level framework that unites stochastic elasticities with nonlinear selection to test demographic buffering. Applying it across mammals reveals a key insight: ecological robustness to variability often decouples from evolutionary constraint, reshaping how we understand resilience under environmental stochasticity.
Gabriel Silva Santos   +4 more
wiley   +1 more source

Leishmaniose cutânea experimental: I - sobre a susceptibilidade do primata Cebus apella (Cebidae) a infecção pela Leishmania (Viannia) lainsoni Silveira, Shaw, Braga e Ishikawa, 1987

open access: yesRevista da Sociedade Brasileira de Medicina Tropical, 1989
Foi investigada a susceptibilidade do primata Cebus apella (Cebidae) à infecção experimental pela Leishmaiua (Viannia) lainsoni, com o objetivo de estudara patogenia desse parasita, ainda pouco conhecido para o homem. Dessa forma, cinco espécimens jovens
Fernando T. Silveira   +6 more
doaj   +3 more sources

The Platyrrhine Primate Cebus imitator Uses Gaze to Manipulate and Withdraw Food to the Mouth [PDF]

open access: yesAnimal Behavior and Cognition
Orienting a food item held in the hand to withdraw and optimally place it in the mouth for eating (withdraw-to-eat) is mediated by vision in catarrhine anthropoids and by nonvisual strategies in strepsirrhine primates.
Ian Q. Whishaw   +6 more
doaj   +1 more source

Social traditions [PDF]

open access: yes, 2017
Social traditions, here defined as displaying inter-group behavioural differences acquired through social learning, have been identified in a number of primate species.
Claidiere   +13 more
core   +2 more sources

From the predator to the prey: a case study of the vulnerability of Harmonia axyridis to aggressive competitors

open access: yesInsect Science, EarlyView.
The level of aggressiveness of an individual is a factor that shapes intraguild predation (IGP) interactions. In Nabis americoferus, high aggressiveness leads to an increase in attack rate and IGP against Harmonia axyridis. Moreover, the absence of extraguild prey seems to exacerbate IGP. In docile N.
Pierre Royer   +3 more
wiley   +1 more source

Comparative anatomical study of the leg's nerves of Cebus (barbed capuchins) with baboons, chimpanzees and modern humans Estudo anatômico comparativo dos nervos da perna de Cebus (macaco-prego) com babuínos, chimpanzés e humanos modernos

open access: yesPesquisa Veterinária Brasileira, 2012
The anatomical comparative studies among the primates are important for the investigation of ethology, evolution, taxonomy, and comprehension of tools by hominoids.
Tainá de Abreu   +6 more
doaj  

Per3 expression in different tissues of Cebus apella

open access: yesSleep Science, 2016
We present a study of Per3 expression in six different tissues of the non-human primate Cebus apella (capuchin monkey). The aim of this study was to verify whether the expression of the Per3 gene in different tissues of capuchin monkey occurs in a ...
Flávia Cal Sabino   +2 more
doaj   +1 more source

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