Results 51 to 60 of about 2,628 (173)

Ontogenetic Changes in Intrinsic Hand and Foot Proportions in Chimpanzees, Pan troglodytes

American Journal of Biological Anthropology, Volume 191, Issue 1, September 2026.
ABSTRACT Objectives Ontogenetic trajectories in intrinsic hand and foot proportions are likely to vary in primates according to their locomotor adaptations. We analyzed the developmental trajectories of chimpanzees (Pan troglodytes), which exhibit particular locomotor adaptations related to suspensory and climbing abilities, testing whether autopodial ...
Tom Combemorel, Jesse W. Young, François Druelle   +2 more
wiley   +1 more source

Mechanical isolation of capuchin monkey (Cebus apella) preantral ovarian follicles

Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2003
The aim of this study was to adapt a mechanical procedure for the isolation of intact preantral follicles from Cebus apella ovaries. The interval effect of serial sections of the tissue chopper was tested on a number of preantral follicles isolated from ...
S.F.S. Domingues, H.S. Ferreira, J.A.P.C. Muniz, A.K.F. Lima, O.M. Ohashi, J.R. Figueiredo, L.D.M. Silva   +6 more
doaj   +1 more source

Woolly Monkey–HBV Infection in Squirrel Monkeys as a Surrogate Nonhuman Primate Model of HBV Infection

Hepatology Communications, 2020
Development of curative therapies for chronic hepatitis B virus (HBV) infection will likely require new animal models. Here, we evaluate HBV infection in squirrel monkeys based on the high‐sequence homology of the HBV receptor, Na+/taurocholate co ...
Christopher Y. Chen, Benjamin Y. Winer, Deborah Chavez, Bernadette Guerra, Kathleen M. Brasky, Stacey Eng, Eduardo Salas, Danny Tam, Joe H. Simmons, Christian R. Abee, William E. Delaney, Alexander Ploss, Robert E. Lanford, Christian Voitenleitner   +13 more
doaj   +1 more source

In‐vitro puncture experiment using alligator teeth tracks the formation of dental microwear and its association with hardness of the diet

The Anatomical Record, Volume 309, Issue 9, Page 2424-2441, September 2026.
Abstract With the development of dental microwear texture analysis (DMTA), there has been an increasing application of DMTA for dietary estimation in extant and fossil reptiles, including dinosaurs. While numerous feeding experiments exist for herbivorous mammals, knowledge remains limited for carnivorous reptiles. This study aimed to qualitatively and
K. Usami, M. O. Kubo
wiley   +1 more source

Do Social Conditions Affect Capuchin Monkeys’ (Cebus apella) Choices in a Quantity Judgment Task?

Frontiers in Psychology, 2012
Beran et al. (2012) reported that capuchin monkeys closely matched the performance of humans in a quantity judgment test in which information was incomplete but a judgment still had to be made.
Michael eBeran, Bonnie ePerdue, Audrey E Parrish, Theodore eEvans   +3 more
doaj   +1 more source

Impacted Bones: Can Extant Primates Help Identify Tool Use in Early Hominins?

Evolutionary Anthropology: Issues, News, and Reviews, Volume 35, Issue 3, September 2026.
ABSTRACT Despite recent advances pushing back the earliest record of tool use, how and when it first emerged in hominins, and the extent to which it featured amongst the numerous co‐existing species, remain critical questions in paleoanthropology. In addition to analyzing fossils and lithic toolkits, novel strides in understanding this might be made by
Rachel M. Hurwitz, Katarina Almeida‐Warren, Susana Carvalho, Thomas A. Püschel   +3 more
wiley   +1 more source

Meat Acquisition Skill and Male Reproductive Success in Guinea Baboons

American Journal of Biological Anthropology, Volume 190, Issue 4, August 2026.
ABSTRACT Objectives In human foraging societies, hunting skill is often interpreted as a signal of male quality linked to reproductive success through his ability to provision his family and community. Similarly, in some bird and insect species, males offer mates food to indicate their quality as a provider.
William J O'Hearn, Federica Dal Pesco, Roger Mundry, Julia Fischer   +3 more
wiley   +1 more source

Demographic buffering in natural populations: A multi‐level perspective

Journal of Animal Ecology, Volume 95, Issue 8, Page 1298-1310, August 2026.
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, Samuel J. L. Gascoigne, André Tavares Corrêa Dias, Maja Kajin, Roberto Salguero‐Gómez   +4 more
wiley   +1 more source

Natural infection by Microsporum canis in a capuchin monkey

Ciência Rural
: This paper described a case of a capuchin monkey (Sapajus libidinosus) with non-pruritic skin lesions. During the physical examination, multifocal areas of alopecia with crusts, erythema and scaling compatible with dermatophytosis were reported on the ...
Stéphanie Machado Mota, Adriano Fernandes Ferreira, Thiago Lopes Nery, Roberto Citelli de Farias, Amanda Figueiredo Mangueira, Felisbina Luísa Queiroga   +5 more
doaj   +1 more source

Specialized for the Reach: Visual Control of Fruit Picking and Positional Behavior Favor a Reach Over a Grasp Phenotype for Geoffroy's Spider Monkey (Ateles geoffroyi) [PDF]

Animal Behavior and Cognition
The Geoffroy’s spider monkey (Ateles geoffroyi) has distinctive features, including a vestigial external thumb, elongated fingers and forelimbs, and a prehensile tail.
Ian Q. Whishaw, Jordan Dudley, Paulo Ramírez González, Evin Murillo Chacon, Megan A. Mah, Fernando A. Campos, Filippo Aureli, Amanda D. Melin   +7 more
doaj   +1 more source