Results 61 to 70 of about 3,810 (186)

Beyond mammals: the evolution of chewing and other forms of oropharyngeal food processing in vertebrates

open access: yesBiological Reviews, Volume 101, Issue 3, Page 1406-1462, June 2026.
ABSTRACT Oropharyngeal food processing exhibits a remarkable diversity among vertebrates, reflecting the evolution of specialised ‘processing centres’ associated with the mandibular, hyoid, and branchial arches. Although studies have detailed various food‐processing strategies and mechanisms across vertebrates, a coherent and comprehensive terminology ...
Daniel Schwarz   +6 more
wiley   +1 more source

Papio hamadryas

open access: yes, 1993
Papio hamadryas (Linnaeus, 1758). Syst. Nat., 10th ed., 1:27. TYPE LOCALITY: Egypt. DISTRIBUTION: Senegal to Somalia and S Arabia, south to South Africa. STATUS: CITES - Appendix II; IUCN - Rare. SYNONYMS: aegyptiaca, anubis, antiquorum, brockmani,
Colin P. Groves
core   +1 more source

Population dynamics of medium and large mammals in a West African gallery forest area and the potential effects of poaching

open access: yesJournal of Threatened Taxa, 2017
Few studies are available on the population dynamics of medium and large mammals in gallery forests of the Sudan and Sahel regions of West Africa.  Line-transect studies of the abundance (estimated by KIA) of nine species of ungulates and three species ...
Emmanuel M. Hema   +6 more
doaj   +1 more source

Impacts of habitats and seasons on mammalian diversity and distribution in the Faragosa-Fura landscape, Gamo Zone, Southern Ethiopia

open access: yesGeology, Ecology, and Landscapes, 2021
In Ethiopia, most of the studies on mammals have focused on single species and protected areas. This survey investigated the impacts of habitats and seasons on the medium and large-sized mammals’ diversity and distribution in a human-dominated ...
Berhanu Gebo   +2 more
doaj   +1 more source

Social Drivers of Vocal Flexibility in Female Baboons

open access: yesEthology, Volume 132, Issue 6, Page 390-398, June 2026.
Female olive baboons selectively grunt when encountering females with dependent offspring. Grunting likelihood depends on rank differences and the strength of their social bond. This study adds to the evidence that nonhuman primates have evolved to use structurally‐inflexible vocalisations in population and context‐flexible ways.
Yaëlle Bouquet   +3 more
wiley   +1 more source

Multimodal sexual signalling and mating behavior in olive baboons (Papio anubis)

open access: yes, 2013
In primate species, mating decisions seem to be based on multiple signal elements with different roles in the signalling of female reproductive status. Whereas some primate signals are relatively well described(e.g., sexual swellings and copulation calls)
Blin, Amandine   +12 more
core   +1 more source

Evolution of the antiretroviral restriction factor TRIMCyp in Old World primates. [PDF]

open access: yesPLoS ONE, 2010
The retroviral restriction factor TRIMCyp, which is a fusion protein derived from the TRIM5 gene, blocks replication at a post-entry step. Among Old World primates, TRIMCyp has been found in four species of Asian macaques, but not in African monkeys.
Elizabeth A Dietrich   +2 more
doaj   +1 more source

Validation of Immunoassays for Total Thyroxine and Free Thyroxine and Age and Sex‐Related Variation in Thyroid Hormone Serum Concentrations in Orangutans (Pongo sp.)

open access: yesJournal of Medical Primatology, Volume 55, Issue 3, June 2026.
ABSTRACT Background Thyroid disease is reported in orangutans, but to properly diagnose and manage these disorders, reference intervals for circulating thyroid hormones are needed. Methods Commercial immunoassay kits for total thyroxine (TT4) and free thyroxine (FT4) were validated for use in orangutans (Pongo spp.).
Melissa A. Fayette   +4 more
wiley   +1 more source

Signals of female reproductive quality and fertility in colony-living baboons (Papio h. anubis) in relation to ensuring paternal investment

open access: yes, 2009
The fitness of a female’s offspring depends cruicially on the traits, genetic and paternal, that the father contributes. As such, females may either have an interest in behaviorally choosing the highest-quality male, or in reliably signaling their ...
Heistermann, Michael   +9 more
core   +1 more source

Diversity, distribution, and relative abundance of medium and large-sized mammals in Chukala Mountain Forest, East Shoa Zone, Oromia, Ethiopia

open access: yesBMC Zoology
This study investigates the diversity, distribution, and relative abundance of medium and large-sized mammals in the biodiverse Chukala Mountain Forest of East Shoa, Oromia, Ethiopia, during March to August 2020.
Nimona Alemu   +3 more
doaj   +1 more source

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