Social pressure drives “conversational rules” in great apes

L Pougnault, F Levrero, M Leroux, J Paulet… - Biological …, 2022 - Wiley Online Library
In the last decade, two hypotheses, one on the evolution of animal vocal communication in
general and the other on the origins of human language, have gained ground. The first …

[PDF][PDF] Morphometric, behavioral, and genomic evidence for a new orangutan species

A Nater, MP Mattle-Greminger, A Nurcahyo, MG Nowak… - Current Biology, 2017 - cell.com
Six extant species of non-human great apes are currently recognized: Sumatran and
Bornean orangutans, eastern and western gorillas, and chimpanzees and bonobos [1] …

Strategies for determining kinship in wild populations using genetic data

V Städele, L Vigilant - Ecology and Evolution, 2016 - Wiley Online Library
Abstract Knowledge of kin relationships between members of wild animal populations has
broad application in ecology and evolution research by allowing the investigation of …

The slow ape: High infant survival and long interbirth intervals in wild orangutans

MA van Noordwijk, SSU Atmoko, CD Knott… - Journal of Human …, 2018 - Elsevier
Orangutans (Pongo spp.) are reported to have extremely slow life histories, including the
longest average interbirth intervals of all mammals. Such slow life history can be viable only …

[HTML][HTML] Shifting apes: Conservation and welfare outcomes of Bornean orangutan rescue and release in Kalimantan, Indonesia

J Sherman, M Ancrenaz, E Meijaard - Journal for Nature Conservation, 2020 - Elsevier
For more than 50 years, Critically Endangered Bornean orangutans (Pongo pygmaeus)
have been rescued from poachers or captors, rehabilitated, and released into natural …

Migrant orangutan males use social learning to adapt to new habitat after dispersal

J Mörchen, F Luhn, O Wassmer, JA Kunz… - Frontiers in Ecology …, 2023 - frontiersin.org
Dispersal has been suggested to be challenging, especially for species that heavily rely on
social learning for knowledge acquisition. One of the obstacles that migrants face is learning …

Experimental evidence for yawn contagion in orangutans (Pongo pygmaeus)

E Van Berlo, AP Díaz-Loyo, OE Juárez-Mora, ME Kret… - Scientific reports, 2020 - nature.com
Yawning is highly contagious, yet both its proximate mechanism (s) and its ultimate
causation remain poorly understood. Scholars have suggested a link between contagious …

The emergence and early development of socio-sexual behavior in beluga calves (Delphinapterus leucas)

JR Ham, MK Lilley, J Lelekach, MR Miller… - Behavioural …, 2022 - Elsevier
While the ontogeny of beluga (Delphinapterus leucas) socio-sexual behavior has been
documented in animals between 37-and 108-months-old, the first 36 months of life are yet to …

Nutritional ecology of wild Bornean orangutans (Pongo pygmaeus wurmbii) in a peat swamp habitat: Effects of age, sex, and season

ER Vogel, SE Alavi, SS Utami‐Atmoko… - American journal of …, 2017 - Wiley Online Library
The spatial and temporal variation in food abundance has strong effects on wildlife feeding
and nutrition. This variation is exemplified by the peatland forests of Central Kalimantan …

[HTML][HTML] Importance of small forest fragments in agricultural landscapes for maintaining orangutan metapopulations

M Ancrenaz, F Oram, N Nardiyono, M Silmi… - Frontiers in Forests …, 2021 - frontiersin.org
Historically, orangutans (Pongo spp.) lived in large contiguous areas of intact rainforest.
Today, they are also found in highly modified and fragmented landscapes dominated by oil …