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Primates; Journal of Primatology

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https://www.readbyqxmd.com/read/28993925/microhabitat-use-of-the-western-black-crested-gibbon-inhabiting-an-isolated-forest-fragment-in-southern-yunnan-china-implications-for-conservation-of-an-endangered-species
#1
Qingyong Ni, Zongli Liang, Meng Xie, Huailiang Xu, Yongfang Yao, Mingwang Zhang, Yan Li, Ying Li, Xuelong Jiang
Due to the synergistic effects of hunting and habitat loss, populations of the western black-crested gibbon are currently restricted to isolated forest fragments. The home range use of this species in fragmented forests is presumptively related to spatial, food and vegetation attributes, as in other primates. We examined the distributions of different food resources, the structure of the vegetation (tree density, DBH, and height), and the microhabitat use of one gibbon group in an isolated and disturbed forest at Bajiaohe in southern Yunnan, China...
October 9, 2017: Primates; Journal of Primatology
https://www.readbyqxmd.com/read/28948386/small-scale-variability-in-a-mosaic-tropical-rainforest-influences-habitat-use-of-long-tailed-macaques
#2
John Chih Mun Sha, Siew Chin Chua, Ping Ting Chew, Hassan Ibrahim, Hock Keong Lua, Tze Kwan Fung, Peng Zhang
Pristine habitats have generally been considered to be the most important ecological resource for wildlife conservation, but due to forest degradation caused by human activities, mosaics of secondary forests have become increasingly prominent. We studied three forest types in a mosaic tropical forest consisting of short secondary forest (SS), tall secondary forest (TS) and freshwater swamp forest (SF). These forests differed in stand structure and floristic composition, as well as phenological productivity of fruits, flowers and young leaves...
September 25, 2017: Primates; Journal of Primatology
https://www.readbyqxmd.com/read/28932999/prolonged-transport-and-cannibalism-of-mummified-infant-remains-by-a-tonkean-macaque-mother
#3
Arianna De Marco, Roberto Cozzolino, Bernard Thierry
Observations of animals' responses to dying or dead companions raise questions about their awareness of states of helplessness or death of other individuals. In this context, we report the case of a female Tonkean macaque (Macaca tonkeana) that transported the body of her dead infant for 25 days and cannibalized its mummified parts. The mother appeared agitated in the first 2 days after the birth. She then took care of her infant's corpse, which progressively dried and became mummified. In a third stage, the mother continued to transport the corpse as it started disintegrating, and she gnawed and consumed some parts of the remains...
September 20, 2017: Primates; Journal of Primatology
https://www.readbyqxmd.com/read/28929250/horse-cognition-and-behavior-from-the-perspective-of-primatology
#4
EDITORIAL
Tetsuro Matsuzawa
No abstract text is available yet for this article.
September 19, 2017: Primates; Journal of Primatology
https://www.readbyqxmd.com/read/28918605/food-or-threat-wild-capuchin-monkeys-sapajus-libidinosus-as-both-predators-and-prey-of-snakes
#5
Tiago Falótico, Michele P Verderane, Olívia Mendonça-Furtado, Noemi Spagnoletti, Eduardo B Ottoni, Elisabetta Visalberghi, Patrícia Izar
Snakes present a hazard to primates, both as active predators and by defensive envenomation. This risk might have been a selective pressure on the evolution of primate visual and cognitive systems, leading to several behavioral traits present in human and non-human primates, such as the ability to quickly learn to fear snakes. Primates seldom prey on snakes, and humans are one of the few primate species that do. We report here another case, the wild capuchin monkey (Sapajus libidinosus), which preys on snakes...
September 16, 2017: Primates; Journal of Primatology
https://www.readbyqxmd.com/read/28894994/mining-noise-affects-loud-call-structures-and-emission-patterns-of-wild-black-fronted-titi-monkeys
#6
M H L Duarte, M C Kaizer, R J Young, M Rodrigues, R S Sousa-Lima
Anthropogenic noise pollution is increasing and can constrain acoustic communication in animals. Our aim was to investigate if the acoustic parameters of loud calls and their diurnal pattern in the black-fronted titi monkey (Callicebus nigrifrons) are affected by noise produced by mining activity in a fragment of Atlantic Forest in Brazil. We installed two passive acoustic monitoring devices to record sound 24 h/day, 7 days every 2 months, for a year; one unit was close to an opencast mine and the other 2...
September 11, 2017: Primates; Journal of Primatology
https://www.readbyqxmd.com/read/28894949/diet-and-feeding-ecology-of-the-western-hoolock-gibbon-hoolock-hoolock-in-a-tropical-forest-fragment-of-northeast-india
#7
Mrigakhi Borah, Ashalata Devi, Awadhesh Kumar
Forest fragmentation alters plant species diversity and composition, and causes diverse affects on the feeding behavior of wild primates. We investigated the feeding behavior and diet of two groups of western hoolock gibbon (Hoolock hoolock) inhabiting a small isolated forest patch (21 km(2)) in Hollongapar Gibbon Wildlife Sanctuary, Assam, Northeast India, over a year using focal animal sampling. H. hoolock adults spent, on average, 35.2% of their total annual activity budget on feeding, and fed on young leaves, mature leaves, flowers, fruits, petioles, buds and also on animal matter...
September 11, 2017: Primates; Journal of Primatology
https://www.readbyqxmd.com/read/28852885/assessment-of-releases-of-translocated-and-rehabilitated-yucat%C3%A3-n-black-howler-monkeys-alouatta-pigra-in-belize-to-determine-factors-influencing-survivorship
#8
Fanny Tricone
Rehabilitation and reintroduction have become important to the management and welfare of primates worldwide. However, the suitability and success of these practices must be evaluated to determine their effectiveness as well as to improve programs and methods, as little is known about the factors influencing survival of released individuals. Between 2011 and 2014, 28 howler monkeys, Alouatta pigra, were released at Fireburn Reserve, northern Belize by the Primate Rehabilitation Centre of Belize: Wildtracks. From March to August 2015, field trips were made to determine the number and identity of surviving individuals to assess whether differences in individual outcomes (survived or disappeared) could be associated with specific characteristics or backgrounds of the monkeys...
August 29, 2017: Primates; Journal of Primatology
https://www.readbyqxmd.com/read/28825150/sleeping-site-preferences-in-sapajus-cay-illiger-1815-primates-cebidae-in-a-disturbed-fragment-of-the-upper-paran%C3%A3-atlantic-forest-rancho-laguna-blanca-eastern-paraguay
#9
Rebecca L Smith, Sarah E Hayes, Paul Smith, Jeremy K Dickens
Wild primates can spend up to half of their lives sleeping, during which time they are subjected to many of the same selective pressures that they face when awake. Choosing an appropriate sleeping site can thus have important fitness consequences. We examined the sleeping site preferences of wild hooded capuchins (Sapajus cay) in a small degraded fragment of the Upper Paraná Atlantic Forest at Rancho Laguna Blanca (RLB) in eastern Paraguay. Sleeping trees and sites were identified during 5 months of field observations and their physical characteristics were compared to those of non-sleeping trees and sites...
August 20, 2017: Primates; Journal of Primatology
https://www.readbyqxmd.com/read/28815382/spontaneous-cross-species-imitation-in-interactions-between-chimpanzees-and-zoo-visitors
#10
Tomas Persson, Gabriela-Alina Sauciuc, Elainie Alenkær Madsen
Imitation is a cornerstone of human development, serving both a cognitive function (e.g. in the acquisition and transmission of skills and knowledge) and a social-communicative function, whereby the imitation of familiar actions serves to maintain social interaction and promote prosociality. In nonhuman primates, this latter function is poorly understood, or even claimed to be absent. In this observational study, we documented interactions between chimpanzees and zoo visitors and found that the two species imitated each other at a similar rate, corresponding to almost 10% of all produced actions...
August 16, 2017: Primates; Journal of Primatology
https://www.readbyqxmd.com/read/28795255/learning-the-rules-of-the-rock-paper-scissors-game-chimpanzees-versus-children
#11
Jie Gao, Yanjie Su, Masaki Tomonaga, Tetsuro Matsuzawa
The present study aimed to investigate whether chimpanzees (Pan troglodytes) could learn a transverse pattern by being trained in the rules of the rock-paper-scissors game in which "paper" beats "rock," "rock" beats "scissors," and "scissors" beats "paper." Additionally, this study compared the learning processes between chimpanzees and children. Seven chimpanzees were tested using a computer-controlled task. They were trained to choose the stronger of two options according to the game rules. The chimpanzees first engaged in the paper-rock sessions until they reached the learning criterion...
August 10, 2017: Primates; Journal of Primatology
https://www.readbyqxmd.com/read/28965323/the-primates-2017-most-cited-paper-award-is-conferred-upon-the-following-authors-m-a-schillaci-et-al-and-c-hvilsom-et-al
#12
(no author information available yet)
No abstract text is available yet for this article.
October 2017: Primates; Journal of Primatology
https://www.readbyqxmd.com/read/28721454/intra-individual-variation-in-hand-postures-during-terrestrial-locomotion-in-japanese-macaques-macaca-fuscata
#13
Yasuo Higurashi, Ryosuke Goto, Hiroo Kumakura
The primate hand adopts a variety of postures during locomotion. Habitually terrestrial cercopithecine primates are known to use a palmigrade posture at faster speeds to possibly mitigate stresses on the hand skeleton; however, it is unclear whether arboreal or semi-terrestrial species use a similar strategy for adjusting hand posture. Here, we explored intra-individual variation in hand contact patterns during terrestrial locomotion in the Japanese macaque (Macaca fuscata), a semi-terrestrial cercopithecine primate...
July 18, 2017: Primates; Journal of Primatology
https://www.readbyqxmd.com/read/28560636/monkeys-and-mountains-in-yunnan-china
#14
EDITORIAL
Tetsuro Matsuzawa
No abstract text is available yet for this article.
July 2017: Primates; Journal of Primatology
https://www.readbyqxmd.com/read/28500509/observations-of-termitarium-geophagy-by-rylands-bald-faced-saki-monkeys-pithecia-rylandsi-in-madre-de-dios-peru
#15
Dara B Adams, Jennifer A Rehg, Mrinalini Watsa
Geophagy, or soil consumption, has been documented in diverse animal taxa, including many primates. Physiological functions such as mineral supplementation, detoxification of secondary compounds, and antacid properties are possible causes for this behavior. We report on observations of geophagy at arboreal termitaria by free-ranging Pithecia rylandsi at La Estación Biológica Los Amigos (EBLA) in Perú between 2008 and 2015. Characteristics of geophagy events, including saki monkey behavior at the termitaria, were recorded and geochemical analyses were conducted on consumed termitaria, nearby topsoils, and unvisited termitaria...
July 2017: Primates; Journal of Primatology
https://www.readbyqxmd.com/read/28492971/current-conservation-status-of-germain-s-langur-trachypithecus-germaini-in-vietnam
#16
Bang Van Tran, Minh Anh Nguyen, Dat Quoc Nguyen, Quan Bich Thi Truong, Andie Ang, Herbert H Covert, Duc Minh Hoang
Following the split of the silvered langurs of Indochina into two species based on molecular and phenotypic data, there is a need to reevaluate their distribution and update their conservation status. Here, we report the distribution and assess the population size of Germain's langur (Trachypithecus germaini) within its known range across Vietnam. We confirmed this species at six of seven survey sites in different habitats within three provinces in the Mekong Delta Region, including semi-evergreen forest at the Seven Mountains of An Giang Province, mangrove forest in Ngoc Hien and Nam Can Districts and Melaleuca forest in U Minh Ha National Park of Ca Mau Province, and limestone forest at Kien Luong Karst Area and semi-evergreen and evergreen forests at Phu Quoc National Park of Kien Giang Province...
July 2017: Primates; Journal of Primatology
https://www.readbyqxmd.com/read/28484857/muscle-architectural-properties-in-the-common-marmoset-callithrix-jacchus
#17
Naomichi Ogihara, Motoharu Oishi, Ryogo Kanai, Hikaru Shimada, Takahiro Kondo, Kimika Yoshino-Saito, Junichi Ushiba, Hideyuki Okano
The common marmoset, Callithrix jacchus, is a small New World monkey that has recently gained attention as an important experimental animal model in the field of neuroscience as well in rehabilitative and regenerative medicine. This attention reflects the closer phylogenetic relationship between humans and common marmosets compared to that between humans and other experimental animals. When studying the neuronal mechanism behind various types of neurological motor disorders using the common marmoset, possible differences in muscle parameters (e...
July 2017: Primates; Journal of Primatology
https://www.readbyqxmd.com/read/28429170/comparison-of-energy-balance-between-two-different-sized-groups-of-japanese-macaques-macaca-fuscata-yakui
#18
Yosuke Kurihara, Goro Hanya
Quantifying the energy balance is essential for testing socio-ecological models. To reveal costs and benefits of group living in Japanese macaques from the perspective of feeding competition, Kurihara and Hanya (Am J Primatol 77:986-1000, 2015) previously compared feeding behavior between two different-sized groups of macaques (larger group 30-35 individuals; smaller group 13-15 individuals) in the coastal forest of Yakushima, Japan. The results suggested that the larger group exhibited greater feeding effort because of intragroup scramble competition and that the smaller group suffered from higher travel costs, possibly owing to intergroup contest competition...
July 2017: Primates; Journal of Primatology
https://www.readbyqxmd.com/read/28378197/non-dietary-analytical-features-of-chimpanzee-scats
#19
Caroline A Phillips, Richard W Wrangham, William C McGrew
Non-dietary aspects of ape scats such as scat weight and diameter are correlated with age and sex of defaecator for gorillas and orangutans. Defaecation rates of primates, including apes, illuminate their role as primary seed dispersers. We assess if non-dietary features of scats for East African chimpanzees (Pan troglodytes schweinfurthii) reveal such insights for members of the Kanyawara community in Kibale National Park, Uganda. Our objective is to see if such data yield useful perspectives for future census work on unhabituated chimpanzees, that is, what can scats tell us about a wild study population, beyond diet? We followed ten adults from this community, as well as travelling parties, comparing observed vs...
July 2017: Primates; Journal of Primatology
https://www.readbyqxmd.com/read/28342054/tube-task-hand-preference-in-captive-hylobatids
#20
Luca Morino, Makiko Uchikoshi, Fred Bercovitch, William D Hopkins, Tetsuro Matsuzawa
The link between laterality in humans and other primates is still hotly debated. Hylobatids have been rather neglected in this research area, yet they can provide important insights because: (1) they share with humans a complex vocal repertoire, which in humans is thought to be associated with brain hemispheric specialization and lateralized behaviors; (2) their adaptation to arboreality has produced unique postural constraints; (3) the little that is known about laterality in gibbons is contradictory (captive studies have provided conflicting results, while a field study on siamangs reported a population-level left-hand preference)...
July 2017: Primates; Journal of Primatology
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