| macaca assamensis as a new host for experimental plasmodium knowlesi infection. | | 1978 | 108217 |
| chromobacterium violaceum infection in a nonhuman primate (macaca assamensis). | chromobacteriosis caused by chromobacterium violaceum was diagnosed as an assam macaque, macaca assamensis, that died 4 days after receipt of the yerkes primate center, it was received from a primate facility in florida where it has been housed with a group of rhesus monkeys for 5 years. the animal died suddenly without showing any signs of clinical illness. necropsy findings included extensive hepatic necrosis with the formation of multiple large cavitary lesions. foci of necrosis were also fou ... | 1976 | 824500 |
| serological survey of a captive macaque colony in china for antibodies to simian type d retroviruses. | sera from 510 macaques consisting of macaca mulatta, macaca assamensis, macaca fascicularis, macaca nemestrina, and macaca arctoides were investigated for antibodies to simian aids type d retrovirus (srv) by elisa and western blot with viral antigens purified from supernatants of srv-1 infected cell cultures. of these monkeys, 104 were seropositive by elisa; only 23 were confirmed by western blot. the true positive reaction to srv was found in 15 of 463 (3.2%) m. mulatta and eight of eleven (72. ... | 1992 | 1339171 |
| comparative study of the femoral articular facies of knees of the primates. | in this article, on the basis of the characteristics of the moiré contour fringes of nycticebus coucany, macaca assamensis m'clelland, presbytis phayrei, phinopithecus roxellanae, hylobates concolor leucogenys, gorilla gorilla. anthropopithecus troglodytes. simia satyrus and modern human beings we divide the primates into two types. the two types of the new classification may be two groups of the evolution moving state. for comparison with each other, the angle gamma between the approximately el ... | 1987 | 3127881 |
| qinghaosu-induced changes in the morphology of plasmodium inui. | the ultrastructural changes induced by the administration of the antimalarial drug, qinghaosu, were studied in monkeys (macaca assamensis) infected with plasmodium inui. significant changes, notably mitochondrial swelling within the parasites but not within host cells, were first observed 2.5 hr after exposure to qinghaosu. this suggests that the target of qinghaosu may be the parasite's mitochondria, as occurs with primaquine. this is in contrast to the most widely used antimalarial drug, chlor ... | 1985 | 3890573 |
| an abdominal mummified fetus in a macaca assamensis. | a case of an ectopic mummified fetus in a macaca assamensis is described. the condition was detected on routine clinical examination of a newly acquired monkey, and the mummified fetus was surgically removed. | 1980 | 6771404 |
| endocrine characteristics of the menstrual cycle in the assamese monkey (macaca assamensis). | | 1980 | 6778512 |
| in vitro invasion of macaca assamensis erythrocytes by plasmodium knowlesi merozoites. | | 1980 | 7429563 |
| a comparative study of the elbow joints in five species of chinese macaques. | in this paper, we report the findings of a comparative study of the elbow joints of five species of macaque that inhabit china: macaca assamensis, m. arctoides, m. mulatta, m. thibetana and m. nemestrina. results of multivariate analyses of size-related variables and indices of the elbow joint suggested that the breadths of the ventral aspect of the trochlea and of the medial epicondyle of the humerus as well as indices describing the head of the radius are important factors for discriminating t ... | 1993 | 8335290 |
| sequence evolution of the ccr5 chemokine receptor gene in primates. | the chemokine receptor ccr5 can serve as a coreceptor for m-tropic hiv-1 infection and both m-tropic and t-tropic siv infection. we sequenced the entire ccr5 gene from 10 nonhuman primates: pongo pygmaeus, hylobates leucogenys, trachypithecus francoisi, trachypithecus phayrei, pygathrix nemaeus, rhinopithecus roxellanae, rhinopithecus bieti, rhinopithecus avunculus, macaca assamensis, and macaca arctoides. when compared with ccr5 sequences from humans and other primates, our results demonstrate ... | 1999 | 10486970 |
| [human hepatitis b virus infection of tree shrews and macaca assamensis in vivo]. | to examine sensitivity of the tree shrews and macaca assamensis to human hepatitis b virus (hhbv) by serologic methods. | 2003 | 12884835 |
| [identification of the trim5/trimcyp heterozygous genotype in macaca assamensis]. | the lack of appropriate animal models that utilizes hiv-1 as the challenge virus is a major impediment to hiv/aids research. a major reason underlying the inability of hiv-1 to replicate in nonhuman primate cells is the existence of host antiviral restriction factors. the intrinsic antiviral proteins in host cells are described as restriction factors. the understanding of restriction factors and their mechanism in different primates would undoubtedly facilitate the development of hiv/aids animal ... | 2011 | 21341383 |
| Concealed fertility and extended female sexuality in a non-human primate (Macaca assamensis). | In numerous primates living in mixed-sex groups, females display probabilistic cues of fertility to simultaneously concentrate paternity to dominant males while diluting it amongst others as a means to reduce the risk of infanticide and to increase male care for offspring. A few species, however, lack these cues and potentially conceal fertility from males; yet, to date, little is known about mating patterns and their underlying proximate mechanisms in such species. Here, we investigated mating ... | 2011 | 21853074 |
| multilocus typing of cryptosporidium spp. and giardia duodenalis from non-human primates in china. | non-human primates (nhps) are commonly infected with cryptosporidium spp. and giardia duodenalis. however, molecular characterisation of these pathogens from nhps remains scarce. in this study, 2,660 specimens from 26 nhp species in china were examined and characterised by pcr amplification of 18s rrna, 70kda heat shock protein (hsp70) and 60kda glycoprotein (gp60) gene loci for cryptosporidium; and 1,386 of the specimens by ssrrna, triosephosphate isomerase (tpi) and glutamate dehydrogenase (gd ... | 2014 | 25148945 |
| [the primate trimcyp fusion genes and mechanism of restricting retroviruses replication]. | trim5-cyclophilin a (trimcyp) fusion gene is an unusual trim5 locus. at present, this fusion phenomenon has been found in the representative species which contain owl monkey (aotus trivirgatus) of aotus genus that belongs to new world monkeys and old world monkeys such as northern pig-tailed macaque (m. leonina), sunda pig-tailed macaque(m. nemestrina), crab-eating macaque (m. fascicularis), indian rhesus macaque (m. mulatta) and assam macaque (m. assamensis), etc. but the fusion mode and transc ... | 2012 | 22345017 |
| local and landscape correlates of primate distribution and persistence in the remnant lowland rainforests of the upper brahmaputra valley, northeastern india. | habitat fragmentation affects species distribution and abundance, and drives extinctions. escalated tropical deforestation and fragmentation have confined many species populations to habitat remnants. how worthwhile is it to invest scarce resources in conserving habitat remnants within densely settled production landscapes? are these fragments fated to lose species anyway? if not, do other ecological, anthropogenic, and species-related factors mitigate the effect of fragmentation and offer conse ... | 2014 | 24471780 |
| diet and activity of macaca assamensis in wild and semi-provisioned groups in shivapuri nagarjun national park, nepal. | studying the behavioural flexibility and adaptability of macaques to different habitats is one approach to designing a conservation plan. to determine the activity budget and feeding behaviour and evaluate the effects of seasonality in wild and human- altered habitats of assamese macaques (macaca assamensis), we conducted this study in the nagarjun forest of shivapuri-nagarjun national park (snnp) in central nepal. we also updated the list of plant food items of assamese macaques in the snnp. us ... | 2017 | 28697494 |
| osteoarthritis in two marine mammals and 22 land mammals: learning from skeletal remains. | the occurrence of osteoarthritis (oa) in marine mammals is still questionable. here we investigated the prevalence of oa in marine (dolphin and dugong) and terrestrial mammals (asian elephant, asiatic buffalo, camel, cat, cattle, deer, dog, domestic goat, horse, human, hyena, impala, lion, malayan tapir, assam macaque, mule, pig, rabbit, red kangaroo, sheep, tiger and waterbuck). skeletal remains obtained from five institutes were used as subjects; a total of 45 different parts (locations) of bo ... | 2017 | 28542897 |
| a first report of non-invasive adenovirus detection in wild assamese macaques in thailand. | several simian adenoviruses (advs) have been detected and isolated in various species of non-human primates with the goals of monitoring the health of wildlife and investigating their potential for zoonotic disease transmission. here, we provide evidence of adv infection in wild assamese macaques (macaca assamensis assamensis) at phu khieo wildlife sanctuary, thailand, based on polymerase chain reaction of non-invasively collected fecal samples. eight out of 110 fecal samples (7.3%), or five out ... | 2017 | 27858173 |
| prenatal stress effects in a wild, long-lived primate: predictive adaptive responses in an unpredictable environment. | prenatal maternal stress affects offspring phenotype in numerous species including humans, but it is debated whether these effects are evolutionarily adaptive. relating stress to adverse conditions, current explanations invoke either short-term developmental constraints on offspring phenotype resulting in decelerated growth to avoid starvation, or long-term predictive adaptive responses (pars) resulting in accelerated growth and reproduction in response to reduced life expectancies. two par subt ... | 2016 | 27655764 |
| patterns and consequences of male-infant relationships in wild assamese macaques (macaca assamensis). | male care for offspring is unexpected in polygynandrous mammals. evidence from nonhuman primates, however, indicates not only the existence of stable male-immature associations in multimale-multifemale groups, but also male care in the form of protection from infanticidal attacks and conspecific harassment. here, we investigate the relationship characteristics, dynamics, and consequences of male-immature associations in wild assamese macaques, macaca assamensis, at phu khieo wildlife sanctuary, ... | 2017 | 27546937 |
| opposite-sex social bonding in wild assamese macaques. | in large multimale-multifemale primate groups, individual adult males and females may form close social relationships that extend beyond the mating context, a surprising finding for polygynandrous mammals. the patterns of these associations can be relatively stable across time. here we investigate whether dyadic social relationships between the sexes transcend mere association in wild assamese macaques and may be characterized as strong, equitable, and stable affiliative relationships or social ... | 2016 | 27120312 |
| males matter: increased home range size is associated with the number of resident males after controlling for ecological factors in wild assamese macaques. | there is increasing evidence of male resource defense during intergroup encounters in non-human primates. only few studies showed a reproductive benefit of having more males in a group, and evidence only comes from territorial species, or from species with relatively small male group sizes where males are less prone to suffer from collective action problems. we investigated the effect of male group size on home range size and female reproductive success in a non-territorial species with male dis ... | 2016 | 26293179 |
| differences in compact bone tissue microscopic structure between adult humans (homo sapiens) and assam macaques (macaca assamensis). | this study investigated the osteon structure of adult humans and assam macaques, which served as a nonhuman primate model, to find an adequate key for species identification. samples of compact bone from humans (n=5) and assam macaques (n=5) - including humerus (n=20), radius (n=20), ulna (n=20), femur (n=20), tibia (n=20) and fibula (n=20) - were processed using conventional histological techniques. 100 secondary osteons from each sample were evaluated under light microscopy. parameter measurem ... | 2015 | 26165491 |
| dietary adaptations of assamese macaques (macaca assamensis) in limestone forests in southwest china. | limestone hills are an unusual habitat for primates, prompting them to evolve specific behavioral adaptations to the component karst habitat. from september 2012 to august 2013, we collected data on the diet of one group of assamese macaques living in limestone forests at nonggang national nature reserve, guangxi province, china, using instantaneous scan sampling. assamese macaques were primarily folivorous, young leaves accounting for 75.5% and mature leaves an additional 1.8% of their diet. in ... | 2015 | 25231871 |
| low female stress hormone levels are predicted by same- or opposite-sex sociality depending on season in wild assamese macaques. | the social environment can have a powerful impact on an individual's stress response and thus affect health and biological fitness. positive social interactions are particularly important for females of species living in complex societies, e.g. humans and non-human primates. existing studies have mainly focussed on the effect of same-sex social interaction on the stress response, rather than both same- and opposite-sex social interaction simultaneously. however, consideration of both may be cruc ... | 2014 | 24980035 |
| the complete mitochondrial genome of assamese macaques (macaca assamensis). | the complete mitochondrial genome of assamese macaques (macaca assamensis) was sequenced in this study. the genome is 16,542 bp long, consisting of 13 protein-coding genes (pcgs), 2 ribosomal rna genes, 22 transfer rna genes and 2 non-coding areas. eight pcgs (coi, coii, atp6, coiii, nd4l, nd4, nd6, cytb) initiate with the start codon atg and another two genes (nd1, atp8) use gtg, while nd2, nd3 and nd5 start with att, atc and ata, respectively. five genes (coii, atp8, atp6, nd4l and nd5) use th ... | 2016 | 24495139 |
| towards the non-invasive assessment of mhc genotype in wild primates: analysis of wild assamese macaque mhc-drb from fecal samples. | the major histocompatibility complex (mhc) plays an important role in the immune response and may thus crucially affect an individual's fitness, relevant also for studies on evolutionary ecology and wildlife conservation. detailed knowledge on the genomic organization, polymorphism and diversity of the mhc has a narrow taxonomic focus though and among macaques is only available for rhesus and long-tailed macaques-the species most commonly kept for biomedical research. the lack of data on wild po ... | 2014 | 24151109 |
| niche separation of sympatric macaques, macaca assamensis and m. mulatta, in limestone habitats of nonggang, china. | comparative studies of sympatric species are essential in understanding those species' behavioral and ecological adaptations as well as the mechanisms that can reduce resource competition enough to allow coexistence. we collected data on diet, activity budget and habitat use from two sympatric macaque species, the assamese macaque (macaca assamensis) and the rhesus macaque (m. mulatta), in a limestone seasonal rainforest of nonggang nature reserve, southwestern guangxi, china. our results show t ... | 2014 | 24150015 |
| preliminary study of the genetic diversity of eastern assamese macaques (macaca assamensis assamensis) in thailand based on mitochondrial dna and microsatellite markers. | human overpopulation, deforestation, invasion of agricultural areas, and livestock are the primary causes for population fragmentation of wildlife. the distribution range of species of the genus macaca is constantly decreasing and becoming increasingly fragmented due to forest deterioration. assamese macaques (m. assamensis) are classified as near threatened in the international union for conservation of nature (iucn) red list of threatened animals (2008) and have been declared a protected wildl ... | 2014 | 24142419 |
| [influence of surface water availability on mammal distributions in nonggang national nature reserve, guangxi, china]. | surface water is a major limiting factor affecting animal activities in karst ecosystems. from march, 2006 to june, 2007 and from october, 2010 to may, 2011, infra-red camera traps were installed along animal trails and temporary rain pools in nonggang national nature reserve, guangxi, china, to monitor mammal diversity and relative abundance. in total, 19 species from 17 genera, 12 families, and 5 orders were recorded, including two state key protection class i species, the françois' langur (tr ... | 2013 | 23775988 |
| brief communication: female fecal androgens prior to the mating season reflect readiness to conceive in reproductively quiescent wild macaques. | an extensive body of research exists on androgen secretion in males. although androgens are also known to drive patterns of female reproductive physiology and behavior, little attention has been paid to these "male" hormones in females. here, we examined female fecal androgen excretion in strictly seasonally breeding wild assamese macaques (macaca assamensis) and tested the hypothesis that changes in premating season fecal androgens vary with female readiness to resume ovarian cycling and thus t ... | 2013 | 23588998 |
| brief communication: fecal androgen excretion and fetal sex effects during gestation in wild assamese macaques (macaca assamensis). | in placental mammals, pregnancy usually is associated with an increase in maternal androgens, which may significantly impact fetal growth and differentiation, and affect postnatal development and behavior. owing to their slow life histories and challenging social conditions, determination of maternal androgens and potential interference effects of fetal androgen production are of particular interest in wild primates. however, androgen production has been rarely investigated in wild female primat ... | 2012 | 22183710 |
| you mate, i mate: macaque females synchronize sex not cycles. | extended female sexuality in species living in multimale-multifemale groups appears to enhance benefits from multiple males. mating with many males, however, requires a low female monopolizability, which is affected by the spatiotemporal distribution of receptive females. ovarian cycle synchrony potentially promotes overlapping receptivity if fertile and receptive periods are tightly linked. in primates, however, mating is often decoupled from hormonal control, hence reducing the need for synchr ... | 2011 | 22022541 |
| the enigmatic arunachal macaque: its biogeography, biology and taxonomy in northeastern india. | the purpose of this study was to determine the taxonomic status of an unidentified enigmatic macaque seen by scientists since the late 1990s in arunachal pradesh, india. we surveyed 49 troops of enigmatic macaques in four districts of arunachal pradesh. the population studied is from the macaque sinica-group as defined by the reproductive organs. the main species-separating trait in the sinica-group is tail length to head and body length ratio that decreases with latitude and elevation. we gathe ... | 2011 | 21246593 |
| climatic and altitudinal influences on variation in macaca limb morphology. | this study compares limb lengths and joint diameters in the skeletons of six macaque species (macaca assamensis, m. fascicularis, m. fuscata, m. mulatta, m. nemestrina, and m. thibetana) from a broad range of habitats and climates in order to test whether ambient temperatures, latitude, and altitude influence interspecific variation in limb morphology in this widely dispersed genus. analysis of variance, principal component analysis, and partial correlation analysis reveal that species from temp ... | 2011 | 22567298 |
| social bonds enhance reproductive success in male macaques. | for animals living in mixed-sex social groups, females who form strong social bonds with other females live longer and have higher offspring survival [1-3]. these bonds are highly nepotistic, but sometimes strong bonds may also occur between unrelated females if kin are rare [2, 3] and even among postdispersal unrelated females in chimpanzees and horses [4, 5]. because of fundamental differences between the resources that limit reproductive success in females (food and safety) and males (fertili ... | 2010 | 21093261 |
| male competition and its hormonal correlates in assamese macaques (macaca assamensis). | in polygynous mammals, where males compete over access to females, the potential of males to monopolize reproductive females largely depends on the spatio-temporal distribution of reproductive females. we investigated mechanisms of male reproductive competition and its hormonal basis in a cercopithecine species with reduced contest potential owing to female reproductive synchrony and concealed ovulation. over 16 months including two mating seasons we collected 1218 h of observational focal anima ... | 2011 | 21056566 |
| reproductive and life history parameters of wild female macaca assamensis. | information on basic reproductive parameters and life-history traits is crucial for the understanding of primate evolution, ecology, social behavior, and reproductive strategies. here, we report 4 yr of data on reproductive and life-history traits for wild female assamese macaques (macaca assamensis) at phu khieo wildlife sanctuary, northeastern thailand. during 2 consecutive reproductive seasons, we investigated reproductive behavior and sexual swelling size in 16 females and collected 1832 fec ... | 2010 | 20651906 |
| dominance, aggression and physiological stress in wild male assamese macaques (macaca assamensis). | in group-living animals relative rank positions are often associated with differences in glucocorticoid output. during phases of social stability, when dominance positions are clear and unchallenged, subordinates often face higher costs in terms of social stress than dominant individuals. in this study we test this prediction and examine additional potential correlates of stress, such as reproductive season, age and amount of aggression received in wild, seasonally breeding assamese macaques (ma ... | 2008 | 18625235 |
| distribution of assamese macaques (macaca assamensis) in the inner himalayan region of bhutan and their mtdna diversity. | the distributions of assamese macaques (macaca assamensis) and rhesus macaques (m. mulatta) in bhutan have been only partially documented. in order to investigate the distribution patterns of these species, we conducted field observation and genetic assessment with mitochondrial dna (mtdna) typing of macaques in the inner himalayas of bhutan. there were 24 sightings of macaque groups, and all were visually identified as assamese macaques. no groups of rhesus macaques were sighted in this survey ... | 2006 | 16670817 |
| reconciliation and relationship quality in assamese macaques (macaca assamensis). | a consistent conclusion in reconciliation research is that animals that reconcile are likely to have strong social bonds. this has led to the hypothesis that reconciliation occurs most often between valuable social partners. we tested this hypothesis in a group of assamese macaques (macaca assamensis) living near a temple in assam, india. using focal sample and ad libitum data collection, we recorded the occurrence of reconciliation, grooming, and agonistic aiding, and the outcomes of approach. ... | 2005 | 15772987 |
| counter aggression and reconciliation in assamese macaques (macaca assamensis). | patterns of aggressive and affiliative behavior, such as counter aggression and reconciliation, are said to covary in the genus macaca; this is referred to as the systematic variation hypothesis. these behavior patterns constitute a species dominance style. van schaik's [1989] socioecological model explains dominance style in macaques in terms of within- and between-group contest competition. dominance style is also said to correlate with phylogeny in macaques. the present study was undertaken t ... | 2002 | 11948638 |
| social grooming in assamese macaques (macaca assamensis). | reciprocity and social bonding hypotheses were evaluated as explanations for observed patterns of social grooming in assamese macaques (macaca assamensis). in accordance with social bonding, females, as the long-term residents of this matrifocal group, groomed each other and juveniles more often than males groomed one another or juveniles. on the other hand, males groomed females more often and for longer durations than females groomed males and, whereas both males and females groomed juveniles ... | 2000 | 10588437 |
| dominance in assamese macaques (macaca assamensis). | a field study of 64 assamese macaques (macaca assamensis) was conducted at a temple site in assam, india. focal and all occurrence scan techniques were used to collect data on agonistic, grooming, and sexual behavior. more than 1,000 hr of data were summarized into agonistic dominance, grooming, and mounting matrices. rank hierarchies were constructed for all three and compared. we also directly compared each cell in each matrix with the corresponding cells in the other matrices. a nearly linear ... | 1999 | 10402036 |
| comt val158met moderates the link between rank and aggression in a non-human primate. | the comt val158met polymorphism is one of the most widely studied genetic polymorphisms in humans implicated in aggression and the moderation of stressful life event effects. we screened a wild primate population for polymorphisms at the comt val158met site and phenotyped them for aggression to test whether the human polymorphism exists and is associated with variation in aggressive behavior. subjects were all adults from 4 study groups (37 males, 40 females) of assamese macaques (macaca assamen ... | 2017 | 29194954 |
| locomotor kinematics of two semi-wild macaque species (macaca assamensis and macaca arctoides) in thailand. | this project aimed to investigate primate locomotor kinematics noninvasively in the wild. semi-wild assamese and stump-tailed macaques were selected for the study, which was performed in thailand. we investigated their locomotor kinematics and its relationship to habitat use. the macaques' positional behavior was recorded with two video cameras, and kinematic parameters were estimated during terrestrial quadrupedal locomotion, using the markerless method. the data analyzed so far revealed that s ... | 2019 | 30870840 |
| molecular cytogenetic analysis of one african and five asian macaque species reveals identical karyotypes as in mandrill. | the question how evolution and speciation work is one of the major interests of biology. especially, genetic including karyotypic evolution within primates is of special interest due to the close phylogenetic position of macaca and homo sapiens and the role as in vivo models in medical research, neuroscience, behavior, pharmacology, reproduction and acquired immune deficiency syndrome (aids). | 2018 | 29606908 |
| staphylococcus aureus and methicillin resistant s. aureus in nepalese primates: resistance to antimicrobials, virulence, and genetic lineages. | staphylococcus aureus is a ubiquitous pathogen and colonizer in humans and animals. there are few studies on the molecular epidemiology of s. aureus in wild monkeys and apes. s. aureus carriage in rhesus macaques (macaca mulatta) and assam macaques (macaca assamensis) is a species that has not previously been sampled and lives in remote environments with limited human contact. forty staphylococcus aureus isolates including 33 methicillin-susceptible s. aureus (mssa) and seven methicillin-resista ... | 2020 | 33066007 |
| comparative ecological and behavioral study of macaca assamensis and m. mulatta in shivapuri nagarjun national park, nepal. | resource partitioning reduces the competition between different species within the same habitat, promoting their coexistence. to understand how such species co-adapt to reduce conflicts, we examined the behavior of two primates, assamese macaque (macaca assamensis) and rhesus macaque (macaca mulatta), from april 2017 to march 2018 in sivapuri nagarjun national park (snnp), kathmandu valley, nepal. we performed 1580 and 1261 scan sessions on wild multi-male/multi-female groups of assamese and rhe ... | 2020 | 32180044 |
| a comparative assessment of external morphological traits between macaca munzala, tawang and macaca assamensis, goalpara population in northeast india. | the present study aimed to conduct a comparative assessment of the external morphology, relative tail length and colour variation (rgb additive colour model) of macaca munzala, tawang and macaca assamensis, goalpara (southern brahmaputra population), using a non-invasive photogrammetry method. the study revealed that the relative tail length of m. munzala (0.43 ± 0.03) is similar to that of m. assamensis assamensis, a subspecies of m. assamensis. on the other hand, the relative tail length of m. ... | 2020 | 33174153 |
| nutrient contents predict the bamboo-leaf-based diet of assamese macaques living in limestone forests of southwest guangxi, china. | determining the nutrient factors influencing food choice provides important insight into the feeding strategy of animals, which is crucial for understanding their behavioral response to environmental changes. a bamboo-leaf-based diet is rare among mammals. animals' food choice and nutritional goals have been explained by several frameworks; however, the influence of nutrients on food choice in bamboo-leaf-based macaques is not yet available. assamese macaques (macaca assamensis) inhabiting limes ... | 2020 | 32607175 |
| seasonal variation in activity budget of assamese macaques in limestone forest of southwest guangxi, china. | the activity budget is important for understanding behavioural variability and adaptation in primates. assamese macaques (macaca assamensis) found in the limestone forest of guangxi nonggang national nature reserve, southwest china, primarily feed on young leaves of bonia saxatilis (a shrubby, karst-endemic bamboo). to understand how a specific bamboo leaf-based diet and ecological factors affect activity budget, one group of assamese macaques was studied using instantaneous scan sampling for 1 ... | 2020 | 32289788 |
| faecalibacter macacae gen. nov., sp. nov., isolated from the faeces of macaca assamensis. | huge numbers of bacteria reside in the digestive tract of most animals. during an investigation into the bacterial diversity of primates, strain yim 102668t was isolated. when neighbour-joining phylogenetic analysis based on 16s rrna gene sequences was conducted, strain yim 102668t formed a cluster within the family flavobacteriaceae and in a lineage not associated with any known group of previously proposed genera. closely related genera were algoriella (94.8 %), chishuiella (94.8 %), empedobac ... | 2020 | 31674895 |
| integrative personality assessment in wild assamese macaques (macaca assamensis). | in nonhuman animals, individuals of the same sex and age differ in their behavior patterns consistently across time, comparable with human personality differences. to draw conclusions about the adaptive value of behavior traits, it is essential to study them in the wild where animals are subject to the ecological pressures that promoted the evolution of behavior strategies. this study was conducted in the phu khieo wildlife sanctuary, thailand, on 4 groups of habituated wild assamese macaques by ... | 2020 | 31318223 |
| parapatric subspecies of macaca assamensis show a marginal overlap in their predicted potential distribution: some elaborations for modern conservation management. | phylogenetic niche conservatism implies that sister taxa will have similar niches, although the niches of disjunct subspecies may evolve differently. this study uses macaca assamensis, subspecies assamensis and pelops, to investigate the similarities of realized climatic niches of two disjunct subspecies (separated by the brahmaputra river) along with a similarity analysis of their respective regions' climate. modeled distributions were used to quantify their potential distribution under current ... | 2018 | 30386569 |
| non-invasive genotyping with a massively parallel sequencing panel for the detection of snps in hpa-axis genes. | we designed a genotyping panel for the investigation of the genetic underpinnings of inter-individual differences in aggression and the physiological stress response. the panel builds on single nucleotide polymorphisms (snps) in genes involved in the three subsystems of the hypothalamic-pituitary-adrenal (hpa)-axis: the catecholamine, serotonin and corticoid metabolism. to promote the pipeline for use with wild animal populations, we used non-invasively collected faecal samples from a wild popul ... | 2018 | 30374157 |
| association of trimcyp and trim5α from assam macaques leads to a functional trade-off between hiv-1 and n-mlv inhibition. | trim5α restricts retroviruses in a species-specific manner. cyclophilin a was independently retrotransposed into the trim5 loci in different species, leading to the generation of antiviral trim5-cyclophilin a (trimcyp) proteins. previously, we found that assam macaques express a trimcyp chimera (amtrimcyp), along with a trim5α allelic protein (amtrim5α). herein, we investigated the antiviral activity of amtrimcyp and amtrim5α individually, as well as their interaction and joint effects. amtrimcy ... | 2018 | 29705873 |
| variations in diet composition of sympatric trachypithecus francoisi and macaca assamensis in the limestone habitats of nonggang, china. | comparative studies of sympatric species are essential for understanding behavioral and ecological adaptation as well as the mechanisms that can reduce resource competition to allow coexistence. françois' langurs (trachypithecus francoisi) and assamese macaques (macaca assamensis) are sympatric primate species found in the limestone seasonal rainforests of nonggang nature reserve, southwestern guangxi, china. to explore their different adaptation strategies, we collected data on diet using scan ... | 2018 | 29616679 |
| mitochondrial dna analyses and ecological niche modeling reveal post-lgm expansion of the assam macaque (macaca assamensis) in the foothills of nepal himalaya. | genetic diversity of a species is influenced by multiple factors, including the quaternary glacial-interglacial cycles and geophysical barriers. such factors are not yet well documented for fauna from the southern border of the himalayan region. this study used mitochondrial dna (mtdna) sequences and ecological niche modeling (enm) to explore how the late pleistocene climatic fluctuations and complex geography of the himalayan region have shaped genetic diversity, population genetic structure, a ... | 2018 | 29536562 |