Archived Abstracts

Ten years of orangutan-related wildlife crime investigation in West Kalimantan, Indonesia.

Authors: Cathryn Freund, Edi Rahman, Cheryl Knott

Poaching for the pet trade is considered one of the main threats to orangutan survival, especially to the Bornean species (Pongo pygmaeus). However, there have been few attempts to quantify the number of individuals taken from the wild or to evaluate the drivers of the trade. Most orangutan poaching is thought to be opportunistic in nature, occurring in conjunction with deforestation for large-scale agriculture. Using data from our long-term wildlife crime field investigation program collected from 2004-2014, we evaluated the prevalence of orangutan poaching and its spatial distribution in and around Gunung Palung National Park, in the regencies (districts) of Ketapang and Kayong Utara, West Kalimantan, Indonesia. Over the project period, investigators uncovered 145 cases of orangutans being illegally held captive for the pet trade. There was a significant correlation between the extent of oil palm and the number of cases reported from each sub-district in the landscape, supporting the widely held hypothesis that orangutan poaching is opportunistic, and we found no evidence of orangutan trading rings (i.e. international traders) targeting Gunung Palung National Park. Over the past decade, there only has been one prosecution of orangutan trading in West Kalimantan, and weak law enforcement by Indonesian authorities remains the most significant challenge in addressing wildlife trade. We offer four recommendations to address this. As oil palm begins to expand into Africa, this study also may help predict how this will affect gorillas, chimpanzees, and bonobos, encouraging proactive conservation action.
 

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Archived Abstracts

High mortality associated with tapeworm parasitism in geladas (Theropithecus gelada) in the Simien Mountains National Park, Ethiopia.



Extraction of honey from underground bee nests by central African chimpanzees (Pan troglodytes troglodytes) in Loango National Park, Gabon: techniques and individual differences.



Distinctiveness enhances long-term event memory in non-human primates, irrespective of reinforcement.



Feeding behavior and activity budget of the southern yellow-cheeked crested gibbons (Nomascus gabriellae) in a lowland tropical forest.



Social and demographic correlates of male androgen levels in wild white-faced capuchin monkeys (Cebus capucinus)
 



Comparison of male conflict behavior in chimpanzees (Pan troglodytes) and bonobos (Pan paniscus), with specific regard to coalition and post-conflict behavior



Total Energy Expenditure in Captive Capuchins (Sapajus apella).



Ten years of orangutan-related wildlife crime investigation in West Kalimantan, Indonesia.



Minerals in the foods and diet of diademed sifakas: Are they nutritional challenges?
 



Description of a new species of Hoolock gibbon (Primates: Hylobatidae) based on integrative taxonomy



Nut-cracking behaviour in wild-born, rehabilitated bonobos (Pan paniscus): a comprehensive study of hand-preference, hand grips and efficiency



Patterns of milk macronutrients and bioactive molecules across lactation in a western lowland gorilla (Gorilla gorilla) and a Sumatran orangutan (Pongo abelii). 
 



Destabilization of the Gut Microbiome Marks the End-Stage of Simian Immunodeficiency Virus Infection in Wild Chimpanzees.



Diagnostic overview of the illegal trade in primates and law enforcement in Peru.



Do "birds of a feather flock together" or do "opposites attract"?  Behavioral responses and temperament predict success in pairings of rhesus monkeys in a laboratory setting.



A New Conservation Strategy for China – A Model Starting With Primates.
 



Hand preference on unimanual and bimanual tasks in strepsirrhines: The case of the ring-tailed lemur (Lemur catta)



Factors affecting cashew processing by wild bearded capuchin monkeys (Sapajus libidinosus, Kerr 1792).



Modelling infection transmission in primate networks to predict centrality-based risk



Survey of 2014 behavioral management programs for laboratory primates in the United States



Thermal consequences of increased pelt loft infer an additional utilitarian function for grooming



SPATIO-TEMPORAL COMPLEXITY OF CHIMPANZEE FOOD:WHAT TO DO WHEN YOUR MOST ENERGY-RICH FOOD IS IN SHORT SUPPLY?
 



Body mass in wild bearded capuchins (Sapajus libidinosus): Ontogeny and sexual dimorphism
 



Targeting or supporting, what drives patterns of aggressive intervention in fights?



Long-term home range use in white-handed gibbons (Hylobates lar) in Khao Yai National Park, Thailand
 



First-time rhesus monkey mothers, and mothers of sons, preferentially engage in face-to-face interactions with their infants
 



Shades of gray mouse lemurs: Ontogeny of female dominance and dominance-related behaviors in a nocturnal primate.



Patterns of Male Dispersal in Verreaux’s Sifaka (Propithecus verreauxi) at Kirindy Mitea National Park.



The Influence of Male Takeovers on Female Dispersal in Colobus vellerosus



Locating chimpanzee nests and identifying fruiting trees with an Unmanned Aerial Vehicle



Gorilla with white sclera: a naturally occurring variation in a morphological trait linked to social cognitive functions.
 



Measurement of 25-hydroxyvitamin D2&3 and 1, 25  dihydroxyvitamin D2&3 by Tandem Mass Spectrometry: A Primate Multispecies Comparison.



Validation of an acoustic location system to monitor Bornean orangutan (Pongo pygmaeus wurmbii) long calls



Influence of age, reproductive cycling status, and menstruation on the vaginal microbiome in baboons (Papio anubis)



Primate Kinship: Contributions from Cayo Santiago
 



Incorporating ecology and social system into formal hypotheses to guide field studies of color vision in primates



Tool use for food acquisition in a wild mountain gorilla (Gorilla beringei beringei).



Long-Term Effects of Tetanus Toxoid Inoculation on the Demography and Life Expectancy of the Cayo Santiago Rhesus Macaques.



The importance of social play networks for infant or juvenile wild chimpanzees at Mahale Mountains National Park, Tanzania.



The Development of an Instrument to Measure Global Dimensions of Maternal Care in Rhesus Macaques (Macaca mulatta)



Sources of Tooth Wear Variation Early in Life Among Known-Aged Wild Ring-Tailed Lemurs (Lemur catta) at the Beza Mahafaly Special Reserve, Madagascar.
 



Vertical stratification of the nutritional value of fruit: Macronutrients and condensed tannins.



Nutrition and foraging strategies of the black howler monkey (Alouatta pigra) in Palenque National Park, Mexico.
 



On the tool use behavior of the bonobo-chimpanzee last common ancestor, and the origins of hominine stone tool use.
 



The adaptive value of primate color vision for predator detection



Mountain gorilla ranging patterns: influence of group size and group dynamics



Leaf chemistry as a predictor of primate biomass and the mediating role of food selection: a case study in a folivorous lemur (Propithecus verreauxi)
 




Using virtual reality to investigate comparative spatial cognitive abilities in chimpanzees and humans
 



The effect of energetic and psychosocial stressors on glucocorticoids in mantled howler monkeys (Alouatta palliata).



Seasonal variation in the length of the daily activity period in buffy-headed marmosets (Callithrix flaviceps): an important consideration for the analysis of foraging strategies in observational field studies of primates



Diet adaptation of the western black crested gibbon (Nomascus concolor) in an isolated and disturbed forest fragment in southern Yunnan, China



Spatial working memory in immersive virtual reality foraging: path organization, traveling distance and search efficiency in humans (Homo sapiens)



The risk of tuberculosis transmission to free-ranging great apes.



Patterns of movement and seed dispersal by three lemur species.



Extra-pair paternity confirmed in wild white-handed gibbons
 



Death of the (Traveling) Salesman: primates do not show clear evidence of multi-step route planning
 



Obligate exudativory characterizes the diet of the pygmy slow loris Nycticebus pygmaeus
 



Risk factors for stereotypic behavior and self-biting in rhesus macaques (Macaca mulatta): animal’s history, current environment, and personality



Chimpanzee nesting patterns in a savanna habitat: Environmental influences and preferences
 



Developing a Comprehensive and Comparative Questionnaire for Measuring Personality in Chimpanzees using a Simultaneous Top-down/Bottom-up Design



Analyzing visual signals as visual scenes



Food eaten by the Sichuan snub-nosed monkey (Rhinopithecus roxellana) in Shennongjia National Nature Reserve, China, in relation to nutritional chemistry



Death of the alpha: within-community lethal violence among chimpanzees of the Mahale Mountains National Park



Auditory memory in monkeys: costs and benefits of proactive interference



Cortical Networks for Ethologically Relevant Behaviors in Primates



Did trichromatic color vision and red hair color co-evolve in primates?



Dietary Flexibility of the Brown Howler Monkey throughout its Geographic Distribution 



Contrast Imaging Ultrasound Detects Abnormalities in the Marmoset Ovary



Introducing fecal stable isotope analysis in primate weaning studies



Maternal effects and the endocrine regulation of mandrill growth



Disability, compensatory behavior and innovation in free-ranging adult female Japanese macaques (Macaca fuscata)



Consequences of lethal intragroup aggression and alpha male replacement on intergroup relations and home range use in tufted capuchin monkeys (Cebus apella nigritus)



Co-evolution of facial expression and social tolerance in macaques



Behavioral responses of Cao Vit gibbon (Nomascus nasutus) to variations in food abundance and temperature in Bangliang, Jingxi, China



Muscle mass scaling in primates: An energetic and ecological perspective.



Hormonal and experiential predictors of infant survivorship and maternal behavior in a monogamous primate (Callicebus cupreus).



Inequity aversion in relation to effort and relationship quality in long-tailed macaques (Macaca fascicularis).



Sex differences in the stone tool-use behavior of a wild population of Burmese long-tailed macaques (Macaca fascicularis aurea).
 



Genetic evidence for dispersal by both sexes in the Central American Squirrel Monkey, Saimiri oerstedii citrinellus
 



Demography of squirrel monkeys (Saimiri sciureus) in captive environments and its effect on population growth

Genotyping single nucleotide polymorphisms (SNPs) across species in Old World Monkeys



Social behavior, foraging strategies and fecal glucocorticoids in female blue monkeys (Cercopithecus mitis): Potential fitness benefits of high rank in a forest guenon



Analysis of the hydrogenotrophic microbiota of wild and captive black howler monkeys (Alouatta pigra) in Palenque National Park, Mexico
 



Social network analysis in the study of nonhuman primates: A historical perspective



Alternative routes to the leader male role in a multi-level society: follower versus solitary male strategies and outcomes in hamadryas baboons



Effects of anthropogenic  disturbance on indri (Indri indri) health in Madagascar.



When and how well can human-socialized capuchins match actions demonstrated by a familiar human?



Death among geladas (Theropithecus gelada): a broader perspective on mummified infants and primate thanatology.



Female philopatry and dominance patterns in wild geladas.



Characterization of Opsin Gene Alleles Affecting Color Vision in a Wild Population of Titi Monkeys (Callicebus brunneus)



A Coevolutionary Relationship Between Striatum Size and Social Play in Nonhuman Primates



Pattern of maternal circulating CRH in laboratory-housed squirrel and owl monkeys.

Male dominance and reproductive success in wild white-faced capuchins (Cebus capucinus) at Lomas Barbudal, Costa Rica



Ape behavior in two alternating environments: Comparing exhibit and short-term holding areas.