journal
MENU ▼
Read by QxMD icon Read
search

American Journal of Primatology

journal
https://www.readbyqxmd.com/read/28267880/an-empirical-evaluation-of-camera-trapping-and-spatially-explicit-capture-recapture-models-for-estimating-chimpanzee-density
#1
Marie-Lyne Després-Einspenner, Eric J Howe, Pierre Drapeau, Hjalmar S Kühl
Empirical validations of survey methods for estimating animal densities are rare, despite the fact that only an application to a population of known density can demonstrate their reliability under field conditions and constraints. Here, we present a field validation of camera trapping in combination with spatially explicit capture-recapture (SECR) methods for enumerating chimpanzee populations. We used 83 camera traps to sample a habituated community of western chimpanzees (Pan troglodytes verus) of known community and territory size in Taï National Park, Ivory Coast, and estimated community size and density using spatially explicit capture-recapture models...
March 7, 2017: American Journal of Primatology
https://www.readbyqxmd.com/read/28257561/functional-morphology-of-the-douc-langur-pygathrix-spp-scapula
#2
Katie E Bailey, Susan E Lad, James D Pampush
Most colobine monkeys primarily move through their arboreal environment quadrupedally. Douc langurs (Pygathrix spp.), however, are regularly observed to use suspensory behaviors at the Endangered Primate Rescue Center (EPRC) in Northern Vietnam. Previous work has linked variation in scapular morphology to different modes of primate arboreal locomotion. Here we investigate whether the shape of the Pygathrix scapula resembles obligate brachiators (gibbons) or obligate arboreal quadrupeds (other cercopithecoids)...
March 3, 2017: American Journal of Primatology
https://www.readbyqxmd.com/read/28257553/activity-patterns-in-seven-captive-lemur-species-evidence-of-cathemerality-in-varecia-and-lemur-catta
#3
Joel Bray, David R Samson, Charles L Nunn
Cathemerality, or activity throughout the 24-hr cycle, is rare in primates yet relatively common among lemurs. However, the diverse ecological conditions under which cathemerality is expressed complicates attempts to identify species-typical behavior. For example, Lemur catta and Varecia have historically been described as diurnal, yet recent studies suggest that they might exhibit cathemeral behavior under some conditions. To investigate this variation, we monitored activity patterns among lemurs that are exposed to similar captive environments...
March 3, 2017: American Journal of Primatology
https://www.readbyqxmd.com/read/28196398/factors-of-influence-and-social-correlates-of-parturition-in-captive-campbell-s-monkeys-case-study-and-breeding-data
#4
Alban Lemasson, Ronan Jubin, Philippe Bec, Martine Hausberger
How nonhuman primates deal with birth, at the moment of delivery, and during the following days, remains poorly explored because of the unpredictability of this event, particularly for forest-dwelling arboreal species. Available studies highlight intra- and interspecific variation which suggest flexibility of the timing of delivery, of behavior associated with labor contractions and parturition, and the social context and ambient noise surrounding delivery. Here, we present the findings of a two-decade survey of reproduction in a population of captive Campbell's monkeys...
February 14, 2017: American Journal of Primatology
https://www.readbyqxmd.com/read/28185282/impacts-of-habitat-loss-and-fragmentation-on-the-activity-budget-ranging-ecology-and-habitat-use-of-bale-monkeys-chlorocebus-djamdjamensis-in-the-southern-ethiopian-highlands
#5
Addisu Mekonnen, Peter J Fashing, Afework Bekele, R Adriana Hernandez-Aguilar, Eli K Rueness, Nga Nguyen, Nils Chr Stenseth
Understanding the extent to which primates in forest fragments can adjust behaviorally and ecologically to changes caused by deforestation is essential to designing conservation management plans. During a 12-month period, we studied the effects of habitat loss and degradation on the Ethiopian endemic, bamboo specialist, Bale monkey (Chlorocebus djamdjamensis) by comparing its habitat quality, activity budget, ranging ecology and habitat use in continuous forest and two fragments. We found that habitat loss and fragmentation resulted in major differences in vegetation composition and structure between forest types...
February 9, 2017: American Journal of Primatology
https://www.readbyqxmd.com/read/28171687/seminal-coagulation-and-sperm-quality-in-different-social-contexts-in-captive-tufted-capuchin-monkeys-sapajus-apella
#6
Julianne S Lima, Danuza L Leão, Karol G Oliveira, Adriel B Brito, Wlaisa V Sampaio, Regiane R Santos, Helder L Queiroz, Sheyla F Domingues
In the present study, we aimed to assess the influence of different social contexts on the seminal coagulation and sperm quality in captive tufted capuchin monkeys. For this, males were housed either individually, in mixed-sex groups (with females), or in male-only groups. Monkeys were housed in cages and each cage type (i.e., individual or group cage) was placed in a different room. Forty-one males were subjected to semen collection by rectal electroejaculation. The degree of seminal coagulation was determined on a scale of I-IV...
February 7, 2017: American Journal of Primatology
https://www.readbyqxmd.com/read/28171684/socially-transmitted-diffusion-of-a-novel-behavior-from-subordinate-chimpanzees
#7
Stuart K Watson, Lisa A Reamer, Mary Catherine Mareno, Gillian Vale, Rachel A Harrison, Susan P Lambeth, Steven J Schapiro, Andrew Whiten
Chimpanzees (Pan troglodytes) demonstrate much cultural diversity in the wild, yet a majority of novel behaviors do not become group-wide traditions. Since many such novel behaviors are introduced by low-ranking individuals, a bias toward copying dominant individuals ("rank-bias") has been proposed as an explanation for their limited diffusion. Previous experimental work showed that chimpanzees (Pan troglodytes) preferentially copy dominant over low-rank models. We investigated whether low ranking individuals may nevertheless successfully seed a beneficial behavior as a tradition if there are no "competing" models...
February 7, 2017: American Journal of Primatology
https://www.readbyqxmd.com/read/28150439/investigating-the-dental-toolkit-of-primates-based-on-food-mechanical-properties-feeding-action-does-matter
#8
Ghislain Thiery, Franck Guy, Vincent Lazzari
Although conveying an indisputable morphological and behavioral signal, traditional dietary categories such as frugivorous or folivorous tend to group a wide range of food mechanical properties together. Because food/tooth interactions are mostly mechanical, it seems relevant to investigate the dental morphology of primates based on mechanical categories. However, existing mechanical categories classify food by its properties but cannot be used as factors to classify primate dietary habits. This comes from the fact that one primate species might be adapted to a wide range of food mechanical properties...
February 2, 2017: American Journal of Primatology
https://www.readbyqxmd.com/read/28150428/individual-differences-in-zoo-housed-squirrel-monkeys-saimiri-sciureus-reactions-to-visitors-research-participation-and-personality-ratings
#9
Zita Polgár, Lara Wood, Marie J Haskell
Understanding individual differences in captive squirrel monkeys is a topic of importance both for improving welfare by catering to individual needs, and for better understanding the results and implications of behavioral research. In this study, 23 squirrel monkeys (Saimiri sciureus), housed in an environment that is both a zoo enclosure and research facility, were assessed for (i) the time they spent by an observation window under three visitor conditions: no visitors, small groups, and large groups; (ii) their likelihood of participating in voluntary research; and (iii) zookeepers, ratings of personality...
February 2, 2017: American Journal of Primatology
https://www.readbyqxmd.com/read/28118497/total-energy-expenditure-in-captive-capuchins-sapajus-apella
#10
Wren Edwards, Elizabeth V Lonsdorf, Herman Pontzer
Primates have markedly lower total energy expenditure (TEE; kcal/day) than other placental mammals, expending approximately 50% less energy for their mass than non-primate eutherians. However, little is known regarding interspecific variation of energy expenditure within platyrrhine primates. We investigated TEE in captive tufted capuchins (Sapajus apella, n = 8, ages 7-36), a frugivorous platyrrhine, to compare TEE with other placental mammals and primates. We tested the hypothesis that large-brained capuchins would exhibit greater TEE than other platyrrhines that are less encephalized...
January 24, 2017: American Journal of Primatology
https://www.readbyqxmd.com/read/28103408/functional-planning-units-for-the-management-of-an-endangered-brazilian-titi-monkey
#11
Sidney F Gouveia, João Pedro Souza-Alves, Bruno B de Souza, Raone Beltrão-Mendes, Leandro Jerusalinsky, Stephen F Ferrari
Conservation practices in the tropics often rely on the data available for a few, better-known species and the adoption of an appropriate spatial scale. By defining a set of landscape units that account for critical aspects of the focal species, the information available on these conservation targets can support regional conservation policies. Here, we define and classify adjacent landscapes, termed planning units, to orientate management decisions within and among these landscapes, which are occupied by an endangered flagship primate species (Coimbra-Filho's titi monkey, Callicebus coimbrai) from eastern Brazil...
January 19, 2017: American Journal of Primatology
https://www.readbyqxmd.com/read/28103402/do-same-sex-mounts-function-as-dominance-assertion-in-male-golden-snub-nosed-monkeys-rhinopithecus-roxellana
#12
Pengzhen Huang, Xin He, Endi Zhang, Min Chen
It has been hypothesized that same-sex mounts can reflect the hierarchical relationship in a mounting dyad and it is widely deemed that mounting and being mounted are demonstrations of dominant and subordinate status, respectively. In this research, we aimed to test whether same-sex mounts function as dominance assertion in male golden snub-nosed monkeys (Rhinopithecus roxellana). We investigated this behavior in eight-individuals, captive all-male unit (AMU) in Shanghai wild animal park, China. Behavioral observations were conducted with a total of 1,855 mounts recorded from November, 2014 to June, 2015, during which the alpha male was replaced in the beginning of April...
January 19, 2017: American Journal of Primatology
https://www.readbyqxmd.com/read/28100010/fine-scale-genetic-structure-analyses-reveal-dispersal-patterns-in-a-critically-endangered-primate-trachypithecus-leucocephalus
#13
Weiran Wang, Meng Yao
Dispersal is a critically important life history trait of social organisms that has a major impact on the population genetic structure and social relationships within groups. Primates exhibit highly diversified dispersal and philopatry patterns, but knowledge of these patterns is difficult to obtain and usually limited to observations of a small number of focal social groups or individuals. Here, we investigated the dispersal pattern of a critically endangered colobine monkey, the white-headed langur (Trachypithecus leucocephalus), using molecular approaches, and sex-specific population genetic structure analyses at fine geographical scales...
January 18, 2017: American Journal of Primatology
https://www.readbyqxmd.com/read/28095604/vocal-repertoire-of-free-ranging-black-howler-monkeys-alouatta-pigra-call-types-contexts-and-sex-related-contributions
#14
Margarita Briseño-Jaramillo, Véronique Biquand, Alejandro Estrada, Alban Lemasson
Alouatta species utter the most powerful primate vocalizations in the Neotropics and are well-known for their loud and long-lasting male howling bouts. However, the diversity of acoustic structures used in these howling bouts, as well as in non-howling contexts, and the relative contribution of the different group members to the entire vocal repertoire, needed to be explored further. This report provides the first detailed description of the vocal repertoire of black howler monkeys (Alouatta pigra), focusing on acoustic structures and contexts of emission of both loud and soft calls as well as on the contribution rate of males and females to the different call types...
January 17, 2017: American Journal of Primatology
https://www.readbyqxmd.com/read/28095600/human-quarantine-toward-reducing-infectious-pressure-on-chimpanzees-at-the-ta%C3%A3-chimpanzee-project-c%C3%A3-te-d-ivoire
#15
Kim Grützmacher, Verena Keil, Vera Leinert, Floraine Leguillon, Arthur Henlin, Emmanuel Couacy-Hymann, Sophie Köndgen, Alexander Lang, Tobias Deschner, Roman M Wittig, Fabian H Leendertz
Due to their genetic relatedness, great apes are highly susceptible to common human respiratory pathogens. Although most respiratory pathogens, such as human respiratory syncytial virus (HRSV) and human metapneumovirus (HMPV), rarely cause severe disease in healthy human adults, they are associated with considerable morbidity and mortality in wild great apes habituated to humans for research or tourism. To prevent pathogen transmission, most great ape projects have established a set of hygiene measures ranging from keeping a specific distance, to the use of surgical masks and establishment of quarantines...
January 17, 2017: American Journal of Primatology
https://www.readbyqxmd.com/read/28073165/description-of-a-new-species-of-hoolock-gibbon-primates-hylobatidae-based-on-integrative-taxonomy
#16
Peng-Fei Fan, Kai He, Xing Chen, Alejandra Ortiz, Bin Zhang, Chao Zhao, Yun-Qiao Li, Hai-Bo Zhang, Clare Kimock, Wen-Zhi Wang, Colin Groves, Samuel T Turvey, Christian Roos, Kristofer M Helgen, Xue-Long Jiang
We describe a species of Hoolock gibbon (Primates: Hylobatidae) that is new to science from eastern Myanmar and southwestern China. The genus of hoolock gibbons comprises two previously described living species, the western (Hoolock hoolock) and eastern hoolock (H. leuconedys) gibbons, geographically isolated by the Chindwin River. We assessed the morphological and genetic characteristics of wild animals and museum specimens, and conducted multi-disciplinary analyses using mitochondrial genomic sequences, external morphology, and craniodental characters to evaluate the taxonomic status of the hoolock population in China...
January 10, 2017: American Journal of Primatology
https://www.readbyqxmd.com/read/28056164/analysis-of-sea-almond-terminalia-catappa-cracking-sites-used-by-wild-burmese-long-tailed-macaques-macaca-fascicularis-aurea
#17
Tiago Falótico, Noemi Spagnoletti, Michael Haslam, Lydia V Luncz, Suchinda Malaivijitnond, Michael Gumert
Nut-cracking is shared by all non-human primate taxa that are known to habitually use percussive stone tools in the wild: robust capuchins (Sapajus spp.), western chimpanzees (Pan troglodytes verus), and Burmese long-tailed macaques (Macaca fascicularis aurea). Despite opportunistically processing nuts, Burmese long-tailed macaques predominantly use stone tools to process mollusks in coastal environments. Here, we present the first comprehensive survey of sea almond (Terminalia catappa) nut-cracking sites created by macaques...
January 5, 2017: American Journal of Primatology
https://www.readbyqxmd.com/read/28324622/screening-wild-and-semi-free-ranging-great-apes-for-putative-sexually-transmitted-diseases-evidence-of-trichomonadidae-infections
#18
Julie Rushmore, Andrew B Allison, Erin E Edwards, Ujwal Bagal, Sonia Altizer, Mike R Cranfield, Travis C Glenn, Hsi Liu, Antoine Mudakikwa, Lawrence Mugisha, Martin N Muller, Rebecca M Stumpf, Melissa Emery Thompson, Richard Wrangham, Michael J Yabsley
No abstract text is available yet for this article.
April 2017: American Journal of Primatology
https://www.readbyqxmd.com/read/28095599/minerals-in-the-foods-and-diet-of-diademed-sifakas-are-they-nutritional-challenges
#19
Mitchell T Irwin, Jean-Luc Raharison, Colin A Chapman, Randall E Junge, Jessica M Rothman
Minerals, though needed in small quantities, are essential to metabolic processes, and deficiencies can seriously threaten health, reproduction and survival. Despite this, few studies have measured mineral composition of wild primate foods and fewer have quantified mineral intake. Here we measured the concentration of nine minerals in 75 foods of diademed sifakas (Propithecus diadema; five groups) in habitats with varying levels of disturbance at Tsinjoarivo and estimated daily intakes using focal-animal feeding data and intake rates over one year...
April 2017: American Journal of Primatology
https://www.readbyqxmd.com/read/28076653/recent-advances-in-primate-nutritional-ecology
#20
Nicoletta Righini
Nutritional ecology seeks to explain, in an ecological and evolutionary context, how individuals choose, acquire, and process food to satisfy their nutritional requirements. Historically, studies of primate feeding ecology have focused on characterizing diets in terms of the botanical composition of the plants consumed. Further, dietary studies have demonstrated how patch and food choice in relation to time spent foraging and feeding are influenced by the spatial and temporal distribution of resources and by social factors such as feeding competition, dominance, or partner preferences...
April 2017: American Journal of Primatology
journal
journal
28198
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"