Evidence of Placentophagia and Mother-Infant Cannibalism in Free-Ranging < b > < i > Macaca mulatta tcheliensis < /i > < /b > in Mount Taihangshan, Jiyuan, China
Placentophagia or the consumption of the afterbirth is reported in many primate species, whereas cannibalism is a relatively rare event. Based on our field observations over the course of 3 years, we present evidence of placentophagia and mother-infant cannibalism in a free-ranging population of the Taihangshan macaque,Macaca mulatta tcheliensis, in the Mt. Taihangshan area, Jiyuan, Henan, China. We documented 1 case in which a mother consumed the afterbirth of her infant. In a second instance, we observed a fresh placenta discarded on the ground by an unknown individual. We also present a description of the first document...
Source: Folia Primatologica - February 24, 2017 Category: Physiology Source Type: research
Spider Monkey (Ateles geoffroyi) Travel to Resting Trees in a Seasonal Forest of the Yucatan Peninsula, Mexico
Resting by primates is considered an understudied activity, relative to feeding or moving, despite its importance in physiological and time investment terms. Here we describe spider monkeys' (Ateles geoffroyi) travel from feeding to resting trees in a seasonal tropical forest of the Yucatan Peninsula. We followed adult and subadult individuals for as long as possible, recording their activities and spatial location to construct travel paths. Spider monkeys spent 44% of the total sampling time resting. In 49% of the cases, spider monkeys fed and subsequently rested in the same tree, whereas in the remaining cases they trave...
Source: Folia Primatologica - January 31, 2017 Category: Physiology Source Type: research
Spider Monkey ( < b > < i > Ateles geoffroyi < /i > < /b > ) Travel to Resting Trees in a Seasonal Forest of the Yucatan Peninsula, Mexico
Resting by primates is considered an understudied activity, relative to feeding or moving, despite its importance in physiological and time investment terms. Here we describe spider monkeys' (Ateles geoffroyi) travel from feeding to resting trees in a seasonal tropical forest of the Yucatan Peninsula. We followed adult and subadult individuals for as long as possible, recording their activities and spatial location to construct travel paths. Spider monkeys spent 44% of the total sampling time resting. In 49% of the cases, spider monkeys fed and subsequently rested in the same tree, whereas in the remaining cases they trave...
Source: Folia Primatologica - January 30, 2017 Category: Physiology Source Type: research
Rapid Decrease in Populations of Wild Ring-Tailed Lemurs ( < b > < i > Lemur catta < /i > < /b > ) in Madagascar
In this study, we present population estimates from 32 sites across the range ofL. catta, collected from primary and secondary data sources, to assess the number of ring-tailed lemurs left in the wild. We estimate that there are approximately 2,220 individualL. catta remaining in the 32 sites considered. We note local extinctions of populations ofL. cattain at least 12 of the 32 sites examined, and that significantly more extinctions occurred in areas without some form of protection. This decrease in extant populations could represent a decrease of more than 95% of all ring-tailed lemurs in Madagascar since the year 2000. ...
Source: Folia Primatologica - January 24, 2017 Category: Physiology Source Type: research
Nesting Ecology of a Small Montane Population of the Nigerian/Cameroon Chimpanzee (Pan troglodytes ellioti) in Nigeria
Understanding nest site choice by chimpanzees has implications for ecology, anthropology, and in the collection of census data, yet it remains controversial. Here we provide the first information on environmental factors affecting nest site choice in a montane population of the rare and relatively understudied Nigerian/Cameroon chimpanzee (Pan troglodytes ellioti) in Ngel Nyaki Forest Reserve, Nigeria. The forest is small, isolated, and visited by researchers, community members, and hunters. We also tested the hypothesis that people (researchers) walking along forest trails collecting data on a regular basis since 2005 wil...
Source: Folia Primatologica - January 24, 2017 Category: Physiology Source Type: research
Behavioural Responses of Yunnan Snub-Nosed Monkeys (Rhinopithecus bieti) to Tourists in a Provisioned Monkey Group in Baimaxueshan Nature Reserve
The appearance of tourists brings about behavioural changes in some primates. Primate behavioural responses to human activities can reflect their survival strategy. Little is known about how the behaviour ofRhinopithecus bieti changes in the presence of tourists. Here we provide the first detailed description of interactions between a provisioned group ofR. bieti and tourists at Xiangguqing in Baimaxueshan Nature Reserve from July 2012 to June 2013. We found thatR. bieti had different response rates to the 5 most common human actions (shout, photograph, offer food, clap, and wave). Results indicated thatR. bieti expresses ...
Source: Folia Primatologica - January 24, 2017 Category: Physiology Source Type: research
Acknowledgement to the Reviewers
Folia Primatol 2016;87:331 (Source: Folia Primatologica)
Source: Folia Primatologica - January 24, 2017 Category: Physiology Source Type: research
Nesting Ecology of a Small Montane Population of the Nigerian/Cameroon Chimpanzee ( < b > < i > Pan troglodytes ellioti < /i > < /b > ) in Nigeria
Understanding nest site choice by chimpanzees has implications for ecology, anthropology, and in the collection of census data, yet it remains controversial. Here we provide the first information on environmental factors affecting nest site choice in a montane population of the rare and relatively understudied Nigerian/Cameroon chimpanzee (Pan troglodytes ellioti) in Ngel Nyaki Forest Reserve, Nigeria. The forest is small, isolated, and visited by researchers, community members, and hunters. We also tested the hypothesis that people (researchers) walking along forest trails collecting data on a regular basis since 2005 wil...
Source: Folia Primatologica - January 20, 2017 Category: Physiology Source Type: research
Behavioural Responses of Yunnan Snub-Nosed Monkeys ( < b > < i > Rhinopithecus bieti < /i > < /b > ) to Tourists in a Provisioned Monkey Group in Baimaxueshan Nature Reserve
The appearance of tourists brings about behavioural changes in some primates. Primate behavioural responses to human activities can reflect their survival strategy. Little is known about how the behaviour ofRhinopithecus bieti changes in the presence of tourists. Here we provide the first detailed description of interactions between a provisioned group ofR. bieti and tourists at Xiangguqing in Baimaxueshan Nature Reserve from July 2012 to June 2013. We found thatR. bieti had different response rates to the 5 most common human actions (shout, photograph, offer food, clap, and wave). Results indicated thatR. bieti expresses ...
Source: Folia Primatologica - January 20, 2017 Category: Physiology Source Type: research
Disappearing in the Night: An Overview on Trade and Legislation of Night Monkeys in South and Central America
We present a quantitative analysis of this trade from all 9 range countries, over 4 decades, and compare domestic legislation to CITES regulations. Night monkeys were exported from 8 of the 9 habitat countries, totalling 5,968 live individuals and 7,098 specimens, with trade of live individuals declining over time. In terms of species, the most commonly traded wasAotus nancymaae (present in Brazil, Colombia, Peru) followed byA. vociferans (Brazil, Colombia, Ecuador, Peru) andA. zonalis (Colombia, Panama). There was no significant correlation between levels of trade and species' geographic range size or the number of countr...
Source: Folia Primatologica - January 17, 2017 Category: Physiology Source Type: research
Rapid Decrease in Populations of Wild Ring-Tailed Lemurs (Lemur catta) in Madagascar
In this study, we present population estimates from 32 sites across the range ofL. catta, collected from primary and secondary data sources, to assess the number of ring-tailed lemurs left in the wild. We estimate that there are approximately 2,220 individualL. catta remaining in the 32 sites considered. We note local extinctions of populations ofL. cattain at least 12 of the 32 sites examined, and that significantly more extinctions occurred in areas without some form of protection. This decrease in extant populations could represent a decrease of more than 95% of all ring-tailed lemurs in Madagascar since the year 2000. ...
Source: Folia Primatologica - January 12, 2017 Category: Physiology Source Type: research
Acoustic Characteristics of Long Calls Produced by Male Orang-Utans (Pongo pygmaeus wurmbii): Advertising Individual Identity, Context, and Travel Direction
Acoustic characteristics and context of the long-distance call of male orang-utans(Pongo pygmaeus wurmbii) were examined in a population of orang-utans from Central Kalimantan, Borneo. Male orang-utans produced long calls under different circumstances, including calls made spontaneously, in response to conspecifics, when accompanied by a snag crash and when travelling with a female. It was shown by acoustic analyses that there was individual discrimination between the male's calls, discrimination between the calls made under different contexts, and between calls from one individual from different years, which coincided wit...
Source: Folia Primatologica - December 9, 2016 Category: Physiology Source Type: research
Acoustic Characteristics of Long Calls Produced by Male Orang-Utans < b > < i > (Pongo pygmaeus wurmbii): < /i > < /b > Advertising Individual Identity, Context, and Travel Direction
Acoustic characteristics and context of the long-distance call of male orang-utans(Pongo pygmaeus wurmbii) were examined in a population of orang-utans from Central Kalimantan, Borneo. Male orang-utans produced long calls under different circumstances, including calls made spontaneously, in response to conspecifics, when accompanied by a snag crash and when travelling with a female. It was shown by acoustic analyses that there was individual discrimination between the male's calls, discrimination between the calls made under different contexts, and between calls from one individual from different years, which coincided wit...
Source: Folia Primatologica - December 8, 2016 Category: Physiology Source Type: research
Distribution of the Grey Slender Loris (Loris lyddekerianus Cabrera, 1908) in Tamil Nadu, Southern India
The grey slender lorisLoris lydekkerianus, one of only two nocturnal primates of India, is found in the southern part of the country. Our understanding of its geographical distribution is largely based on historical records and short surveys, and little is known of its occurrence in southern India today. We sought to establish the relative abundance of this species in 26 districts in the state of Tamil Nadu and the union territory of Pondicherry in southern India. We sighted lorises in 19 districts, and their relative abundance ranged from 0.01 to 2.21/km. The south-central districts of Tamil Nadu showed the highest densit...
Source: Folia Primatologica - November 29, 2016 Category: Physiology Source Type: research
The Mandrill: A Case of Extreme Sexual Selection
Folia Primatol 2016;87:303-304 (Source: Folia Primatologica)
Source: Folia Primatologica - November 28, 2016 Category: Physiology Source Type: research
