Results 21 to 30 of about 4,365 (204)

The Evolution of Food Calls: Vocal Behaviour of Sooty Mangabeys in the Presence of Food

open access: yesFrontiers in Psychology, 2022
The two main theories of food-associated calls in animals propose functions either in cooperative recruitment or competitive spacing. However, not all social animals produce food calls and it is largely unclear under what circumstances this call type ...
Fredy Quintero   +6 more
doaj   +1 more source

Vertebrate DNA in Fecal Samples from Bonobos and Gorillas: Evidence for Meat Consumption or Artefact? [PDF]

open access: yes, 2010
Background: Deciphering the behavioral repertoire of great apes is a challenge for several reasons. First, due to their elusive behavior in dense forest environments, great ape populations are often difficult to observe.
Eriksson, J   +4 more
core   +4 more sources

No genetic evidence for involvement of Deltaretroviruses in adult patients with precursor and mature T-cell neoplasms [PDF]

open access: yes, 2007
Background The Deltaretrovirus genus comprises viruses that infect humans (HTLV), various simian species (STLV) and cattle (BLV). HTLV-I is the main causative agent in adult T-cell leukemia in endemic areas and some of the simian T-cell lymphotropic ...
Burmeister, Thomas   +4 more
core   +1 more source

An Audience Effect in Sooty Mangabey Alarm Calling

open access: yesFrontiers in Psychology, 2022
How does intentional communication evolve? Comparative studies can shed light on the evolutionary history of this relevant feature of human language and its distribution before modern humans.
Fredy Quintero   +6 more
doaj   +1 more source

HIV Types, Groups, Subtypes and Recombinant Forms: Errors in Replication, Selection Pressure and Quasispecies [PDF]

open access: yes, 2012
HIV-1 is a chimpanzee virus which was transmitted to humans by several zoonotic events resulting in infection with HIV-1 groups M P, and in parallel transmission events from sooty mangabey monkey viruses leading to infections with HIV-2 groups A H.
Alvarez M   +40 more
core   +1 more source

Orígenes del VIH/SIDA

open access: yesRevista Clínica de la Escuela de Medicina UCR-HSJD, 2016
El síndrome de inmunodeficiencia adquirida (SIDA) es producido por dos lentivirus, los virus de la inmunodeficiencia humana (VIH) 1 y 2. Los primeros pacientes fueron diagnosticados en Estados Unidos en 1981.
Ricardo Boza Cordero
doaj   +1 more source

Dominance hierarchy and spatial distribution in captive red-capped mangabeys (Cercocebus torquatus torquatus): Testing Hemelrijk's agent-based model [PDF]

open access: yes, 2015
We empirically tested Hemelrijk's agent-based model (Hemelrijk 1998), in which dyadic agonistic interaction between primate-group subjects determines their spatial distribution and whether or not the dominant subject has a central position with respect ...
Dolado i Guivernau, Ruth   +1 more
core   +2 more sources

Consistency of Social Interactions in Sooty Mangabeys and Chimpanzees

open access: yesFrontiers in Ecology and Evolution, 2021
Predictability of social interactions can be an important measure for the social complexity of an animal group. Predictability is partially dependent on how consistent interaction patterns are over time: does the behavior on 1 day explain the behavior on
Alexander Mielke   +14 more
doaj   +1 more source

Context-Dependent Gestural Laterality: A Multifactorial Analysis in Captive Red-Capped Mangabeys

open access: yesAnimals, 2022
Catarrhine primates gesture preferentially with their right hands, which led to the hypothesis of a gestural origin of human left-hemispheric specialization for language.
Juliette Aychet   +3 more
doaj   +1 more source

The impact of civil war on forest wildlife in West Africa: Mammals in Gola Forest, Sierra Leone [PDF]

open access: yes, 2011
Human conflicts may sometimes benefit wildlife by depopulating wilderness areas but there is evidence from Africa that the impacts tend to be negative. The forested states of West Africa have experienced much recent human conflict but there have been no ...
Klop, E., Lindsell, J.A., Siaka, A.M.
core   +1 more source

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