| analysis of loud calls provides new evidence for hybridization between two asian leaf monkeys (presbytis johnii, presbytis entellus). | | 1988 | 3256534 |
| plasmodium inui-like infection producing a presumably fatal illness in a leaf monkey presbytis johnii--a previously undescribed host. | | 1966 | 4224342 |
| passage marker excretion in red kangaroo (macropus rufus), collared peccary (pecari tajacu) and colobine monkeys (colobus angolensis, c. polykomos, trachypithecus johnii). | ruminants are characterized by an efficient particle-sorting mechanism in the forestomach (frst) followed by selective rechewing of large food particles. for the nonruminating foregut fermenter pygmy hippo it was demonstrated that large particles are excreted as fast as, or faster than, the small particles. the same has been suggested for other nonruminating foregut fermenters. we determined the mean retention time of fluids and different-sized particles in six red kangaroos (macropus rufus), se ... | 2009 | 19551808 |
| recognition of heterospecific alarm vocalizations by bonnet macaques (macaca radiata). | recognition of heterospecific alarm vocalizations is an essential component of antipredator behavior in several prey species. the authors examined the role of learning in the discrimination of heterospecific vocalizations by wild bonnet macaques (macaca radiata) in southern india the bonnet macaques' flight and scanning responses to playbacks of their own alarm vocalizations were compared with their responses to playbacks of vocalizations of nilgiri langurs (trachypithecus johnii), hanuman langu ... | 2000 | 10739307 |
| comparative study of vocal communication in two asian leaf monkeys, presbytis johnii and presbytis entellus. | this paper presents comparative data on the vocal communication of two asian leaf monkeys, the nilgiri langur (presbytis johnii) and south indian common langur (presbytis entellus), based on sound recordings and behavioural observations of free-ranging groups. spectrographical analyses revealed a repertoire of 18 basic patterns for nilgiri langurs, and 21 basic patterns for common langurs. the repertoires of the two langur species consist of both discretely structured vocal patterns, in which al ... | 1989 | 2807093 |
| comparative analyses of age- and sex-specific patterns of vocal behaviour in four species of old world monkeys. | sound recordings and behavioural data were collected from four primate species of two genera (macaca, presbytis). comparative analyses of structural and behavioural aspects of vocal communication revealed a high degree of intrageneric similarity but striking intergeneric differences. in the two macaque species (macaca silenus, macaca radiata), males and females shared the major part of the repertoire. in contrast, in the two langurs (presbytis johnii, presbytis entellus), many calls were exclusi ... | 1991 | 1885113 |
| molecular systematics and conservation of the langurs and leaf monkeys of south asia. | numerous morphology-based classification schemes have been proposed for langurs and leaf monkeys of south asia but there is very little agreement between them. an incorrect classification scheme when used as a basis for biogeographic studies can support erroneous hypotheses. further, lack of taxonomic resolution will also confound conservation efforts, given that conservation biologists use traditional morphology-based-classification schemes to prioritize species for conservation. here, i have r ... | 2010 | 21273689 |
| male takeover and infanticide in nilgiri langurs semnopithecus johnii in the western ghats, india. | male takeover and infanticide are a widespread phenomenon among non-human primates, observed mostly in species with a relatively longer lactation in relation to gestation. in this study, we report for the first time an episode of male takeover and infanticide, and the rarely reported occurrence of an all-male band and female dispersal, in nilgiri langurs, semnopithecus johnii, in the western ghats, india. the new male was a member of an all-male band. after the takeover, the resident male and 3 ... | 2014 | 24968755 |
| behavioural variability in macaques and langurs of the western ghats, india. | studies that compare differences in the behavioural variability across species and genera are rare among south asian primates. such studies are important for understanding within-group feeding competition in primates as interindividual difference in frequency of behaviour is a good indicator of feeding competition. we compared the variability in individual activities of lion-tailed macaques, bonnet macaques, nilgiri langurs, and black-footed grey langurs. both macaque species showed variability ... | 2017 | 28934752 |
| folivory as a constraint on social behaviour of langurs in south india. | folivory, being a dietary constraint, can affect the social time of colobines. in the present study, we compared food items and activity budgets of two closely related species of colobines inhabiting south india, i.e. the hanuman langur (semnopithecus hypoleucos) and nilgiri langur (semnopithecus johnii), to determine whether folivory had an impact on social time in these species. our study established that nilgiri langurs were more folivorous than hanuman langurs. nilgiri langurs spent much les ... | 2015 | 26431447 |
| the nilgiri langur (presbytis johnii) troop: its composition, structure, function and change. | | 1969 | 4979359 |
| behavioral flexibility and intertroop variation among nilgiri langurs (presbytis johnii) of south india. | | 1969 | 4979664 |
| dominance structure of the nilgiri langur (presbytis johnii) of south india. | | 1970 | 4984818 |
| the communication matrix of the nilgiri langur (presbytis johnii) of south india. | | 1970 | 4993051 |
| food selection by the south indian leaf-monkey, presbytis johnii, in relation to leaf chemistry. | the leaf-monkey presbytis johnii has been found to exhibit considerable selectivity in its dietary utilization of mature foliage in a rain-forest habitat. to investigate the basis of this selectivity and to examine the hypothesis that the observed selection is related to the digestibility and toxicity of the available foliage, chemical analyses have been made on 16 of the most important tree species in the monkey's habitat. it has been found that the most heavily used items, which form a staple ... | 1980 | 28310936 |
| demography and reproductive output in langurs of the western ghats, india. | life history traits evolve such that the reproductive output of an organism is maximized. demographic characteristics, a consequence of life history traits, indicate the reproductive output per individual in group-living species. both phylogenetic and ecological factors influence demographic traits. in the forests of the western ghats, india, we studied the demography of three langur species: semnopithecus johnii, a wet forest-dwelling species; semnopithecus hypoleucos, largely a wet forest-dwel ... | 2016 | 27328816 |
| documentation and quantitative analysis of local ethnozoological knowledge among traditional healers of theni district, tamil nadu, india. | this study investigated the use of animals among the traditional healers in theni district of tamil nadu, india. the data regarding the medicinal animals/animal products were documented and their usages were analyzed quantitatively. | 2014 | 24680989 |
| taenia crassiceps cysticercosis in a nilgiri langur ( semnopithecus johnii). | a captive-born adult female nilgiri langur ( semnopithecus johnii) developed an edematous swelling of the left thigh and a firm mass around the right ankle joint. the animal also suffered from lethargy and anorexia and was euthanized because of poor general condition. necropsy revealed that the skeletal muscle of the left thigh had been replaced by a multilocular cystic mass containing numerous sand-grain-sized whitish structures. small cysts were also present in the lung and the myocardium. the ... | 2018 | 29900783 |
| a quantitative ethnozoological study of traditionally used animals in pachamalai hills of tamil nadu, india. | the purpose of this study was designed to gather primary folk knowledge on different animal based therapies used by malayalis in pachamalai hills. this is the first ethnozoological study in pachamalai hills; the data regarding the medicinal animals/animal products were documented and their usages were analyzed quantitatively. | 2015 | 26002766 |