| a novel type d simian retrovirus naturally infecting the indian hanuman langur (semnopithecus entellus). | as a simian species, the langurs are not known to harbor simian retroviruses, except for one report on a simian type d endogenous retrovirus from the spectacled langur (trachypithecus obscurus) from malaysia. the present report describes for the first time natural infection of the common hanuman langur (semnopithecus entellus) from india by a novel simian retrovirus (srv). the new srv is phylogenetically related to but distinct from the three molecularly characterized serotypes, srv 1-3, of the ... | 2000 | 11062030 |
| ovarian morphology of the dusky leaf monkey (presbytis obscura): follicular development and atresia. | the ovarian morphology and the pattern of follicular development and atresia have been described for the dusky leaf monkey, presbytis obscura, on the basis of a study of material from 44 female monkeys collected at various stages of the menstrual cycle, pregnancy and lactation. marked differences were found in the dimensions of many ovarian components between this monkey and the other species of langur previously described. during follicular development the oocyte increased in diameter from 28 m ... | 1981 | 7328049 |
| dipetalonema digitatum (chandler 1929) infection in the leaf monkey, presbytis obscura (reid). | | 1980 | 6773151 |
| light microscopy of the endometrium of the dusky leaf-monkey (presbytis obscura). | specimens of this langur species were available from juvenile, adult and lactating animals. the endometrial sections of non-pregnant adults were dated from the ovarian appearances. during the cycle the endometrium underwent changes similar to those decribed for women, baboons and macaques, except that stromal oedema was pronounced and diffuse in the langur, occurring before ovulation and throughout the secretory phase. | 1980 | 6772774 |
| mycobacterium bovis isolated from a dusky langur with granulomas in the intestine. | tubercles were seen in the spleen of a male dusky langur (presbytis obscurus) on laparotomy. subsequently, tuberculous lesions in the intestine, lungs, and a hilar lymph node were observed on necropsy of the monkey. histologic examinations of these tissues revealed granulomas, and acid-fast bacilli were observed within granulomas in replicate sections that were stained with auramine-o. an acid-fast organism was isolated and identified as mycobacterium bovis. guinea pigs and rabbits inoculated in ... | 1982 | 6757221 |
| locomotor behavior and muscular anatomy of sympatric malaysian leaf-monkeys (presbytis obscura and presbytis melalophos). | sympatric malaysian leaf-monkeys, presbytis obscura and presbytis melalophos show quantitative differences in their use of different locomotor patterns during daily activities. p. obscura primarily moves quadrupedally along large boughs; p. melalophos relies more on leaping between smaller supports. p. melalophos also uses forelimb suspension more than does p. obscura. comparison of the muscular anatomy of the shoulder, arm, trunk, hip and thigh show numerous statistically significant difference ... | 1977 | 403773 |
| craniodental mechanics and diet in asian colobines: morphological evidence of mature seed predation and sclerocarpy. | folivory has been accepted as the general dietary pattern for colobines. however, recent ecological studies have revealed that extensive seed eating is found in some colobine species. the ripeness of foraged seeds is also reported to differ between seed eaters. as seeds are generally stress-limited and may pose greater mechanical demands, seed-eating species are predicted to exhibit morphological features adaptive for seed predation. in addition, species that feeds on seeds from unripe fruits wi ... | 2010 | 20091848 |
| inhibition of cathelicidin activity by bacterial exopolysaccharides. | the interaction of bacterial exopolysaccharides, produced by opportunistic lung pathogens, with antimicrobial peptides of the innate primate immune system was investigated. the exopolysaccharides were produced by pseudomonas aeruginosa, inquilinus limosus and clinical isolates of the burkholderia cepacia complex, bacteria that are all involved in lung infections of cystic fibrosis patients. the effects of the biological activities of three orthologous cathelicidins from homo sapiens sapiens, pon ... | 2009 | 19400793 |
| evolution of primate oncornaviruses: an endogenous virus from langurs (presbytis spp.) with related virogene sequences in other old world monkeys. | gene sequences related to a retrovirus (oncornavirus type d) isolated from a lung cell culture from spectacled langur (presbytis obscurus) are found in multiple copies (20-40 per haploid genome) in langur cellular dna; partially homologous virogene sequences are present in the dna of related old world monkey species. primates thus contain gene sequences for at least two distinct classes of genetically transmitted oncornaviruses, the type c class (isolated from baboons) and the type d class descr ... | 1977 | 16592456 |
| catarrhine primate divergence dates estimated from complete mitochondrial genomes: concordance with fossil and nuclear dna evidence. | accurate divergence date estimates improve scenarios of primate evolutionary history and aid in interpretation of the natural history of disease-causing agents. while molecule-based estimates of divergence dates of taxa within the superfamily hominoidea (apes and humans) are common in the literature, few such estimates are available for the cercopithecoidea (old world monkeys), the sister taxon of the hominoids in the primate infraorder catarrhini. to help fill this gap, we have sequenced the en ... | 2005 | 15737392 |
| the endogenous langur type d retrovirus po-1-lu and its exogenous counterparts in macaque and langur monkeys. | po-1-lu, the endogenous type d retrovirus of langurs (trachypithecus obscurus) has previously been considered a progenitor to the prototype type d retrovirus, mason pfizer monkey virus (m-pmv/srv-3), that became established in macaque monkeys (macaca spp.) following a zoonosis. this study reevaluates this hypothesis to include other exogenous srvs. new sequence information from the gp70(su)-encoding region of po-1-lu shows striking similarity to the newly identified exogenous langur retrovirus, ... | 2003 | 14585330 |
| the feeding ecology and dietary overlap in two sympatric primate species, the long-tailed macaque (macaca fascicularis) and dusky langur (trachypithecus obscurus obscurus), in malaysia. | knowledge about the feeding ecology and dietary overlap of sympatric primates is essential for understanding how animals avoid or reduce interspecific competition. from april 2014 to march 2015, we investigated the feeding ecologies of two sympatric primates, a hindgut fermenter, the long-tailed macaque (macaca fascicularis) and a foregut fermenter, the dusky langur (trachypithecus obscurus obscurus), in a mixed landscape consisting of urban and agro-forested areas and forest fragments in malays ... | 2019 | 30564972 |
| type d retroviruses from human cells do not contain a minor glycoprotein shared by old world monkey type d viruses. | the protein patterns of type d retroviruses isolated either from permanent human cells (hela virus, hela v, and hep-2 virus, hep-2v) or from spectacled langur (langur virus, lv), an old world monkey, were investigated using sodium dodecyl sulfate polyacrylamide gel electrophoresis. labeling with 14c-amino acids and 3h-glucosamine revealed for each of these isolates five polypeptides with molecular weights of 10,000, 12,000, 15,000, 25,000 and about 68,000 and identified the 68,000 d-protein as a ... | 1981 | 7332488 |
| early placentation in the dusky leaf monkey (presbytis obscura). | implantation in the dusky leaf monkey, presbytis obscura, is superficial; the placenta is of the double discoid villous haemochorial type. immediately prior to implantation the thick endometrium contains highly active uterine glands. there is an early uterine epithelial proliferation at the implantation site but no stromal decidual response. the fetal villi are evenly spread over that part of the chorion in contact with the endometrium and consist of a mesenchymal core covered by an inner layer ... | 1980 | 7443640 |
| data on first record of brown morph banded langur (presbytis femoralis), leucistic dusky leaf monkey (trachypithecus obscurus) in malaysia and review of morph diversity in langur (colobinae). | morphism refer to polymorphic species, in which multiple colour variants coexist within a population. morphism in primates is common and langurs also exhibit certain characteristics of morphism, such as conspicuous natal coats. banded langurs (presbytis femoralis) and dusky leaf monkey (trachypithecus obscurus) exhibits the same characteristics of conspicuous natal coats, but these coats are only limited to infants and changed when they reached adulthood. this article reports the first discovery ... | 2020 | 32548216 |
| do line-transect surveys systematically underestimate primate densities in logged forests? | the rate at which social groups of primates are encountered in disturbed rain forest may be biased relative to undisturbed rain forest. a recently reported case study revealed a 25% reduction in postlogging raw encounter rates even though the true density of primates remained at the prelogging level. if biased raw encounter rates are typical of disturbed forests, and if they translate into equally biased line-transect density estimates, results of many comparative surveys might prove misleading ... | 1987 | 31973482 |
| banding patterns of the chromosomes of presbytis cristatus pyrrhus and p. obscurus. | the g- and q-bands and the location of the nucleolar organizer regions (nor) in the chromosomes of presbytis obscurus and the q- and c-bands of p. cristatus pyrrhus are described. their chromosomes are compared to those of macaca mulatta and to other cercopithecidae and hylobatidae. the origin of the two different banding patterns of pair no. 1 in our specimen of p. cristatus pyrrhus is discussed. | 1983 | 31991963 |
| coenuriasis in a spectacled langur (presbytis obscura): praziquantel treatment and the antibody response to cyst antigens. | a diagnosis of coenuriasis was made in a spectacled langur raised in captivity. multiple cysts removed from the subcutaneous tissues and later from the abdominal cavity were identified as coenuri, typical of the genus taenia. post-surgical treatment of the remaining cysts with praziquantel was assessed with whole body computerized tomography (ct). ct at 6 weeks post-treatment revealed a reduction in size and increased calcification of abdominal cysts as compared to pretreatment ct. cyst fluid an ... | 1989 | 2729508 |
| isolation and characterization of a new type d retrovirus from the asian primate, presbytis obscurus (spectacled langur). | | 1978 | 74122 |