| [pigmentation disorders in a leontopithecus rosalia chrysomelas (kuhl, 1820), its treatment and recovery (callitrichidae, primates)]. | | 1978 | 416472 |
| toxoplasmosis in golden-headed lion tamarins (leontopithecus chrysomelas) and emperor marmosets (saguinus imperator) in captivity. | from 1991 to 1995, eight new world nonhuman primates of the family callitrichidae belonging to the collection of fundacão parque zoologico de são paulo died of toxoplasmosis. of the eight affected nonhuman primates, four were leontopithecus chrysomelas (one male, three females) and four were saguinus imperator (two males, two females). the most commonly affected organs were the lungs, liver, and lymph nodes, with hemorrhagic and necrotic lesions. histopathologic examination revealed protozoa tha ... | 2000 | 10982139 |
| restoration of reproductive potential following expiration or removal of melengestrol acetate contraceptive implants in golden lion tamarins (leontopithecus rosalia). | although reversible contraception is important to successful management of small populations, there are concerns about the reversibility of melengestrol acetate (mga), the most commonly used implant in captive animals. female golden lion tamarins (leontopithecus rosalia) placed in potential breeding situations after surgical mga implant removal showed a 75% return to reproduction within 2 yr, unlike golden-headed tamarins (leontopithecus chrysomelas), which have had a 29% return to reproduction ... | 2001 | 12785695 |
| stereology of the liver in three species of leontopithecus (lesson, 1840) callitrichidae--primates. | studies on liver morphology and stereology are relevant to the comparative anatomical and pathological research. they also facilitate the use of non-human primates in basic research, which has substantially supported studies in human medicine. quantitative studies of liver structures have also been more extensive in old world primates and other vertebrates. twenty-three livers of adult lion tamarins were studied (six leontopithecus rosalia, seven leontopithecus chrysomelas, and 10 leontopithecus ... | 2004 | 15144289 |
| tularaemia in a captive golden-headed lion tamarin (leontopithecus chrysomelas) in switzerland. | | 2004 | 15285287 |
| chromosome painting comparison of leontopithecus chrysomelas (callitrichine, platyrrhini) with man and its phylogenetic position. | using human probes of whole chromosomes, the homoeologies between human and leontopithecus chrysomelas (platyrrhini) karyotypes were established. thirty-three conserved segments were observed between the two species. intrachromosomal rearrangements between the two species were identified using hybridization of chromosome arm probes of human chromosomes 1 and 3. we also used chromosomal data to investigate phylogenetic relationships of callitrichines. these data were encoded using cebus capucinus ... | 2004 | 15505404 |
| evaluation of control and treatment of gongylonema spp. infections in callitrichids. | numerous cases of gongylonema spp. infection with associated pathological lesions and clinical signs were identified in a collection of goeldi's monkeys (callimico goeldii) (gms) at a zoological park during a 3-yr period. an increase in the incidence of clinical signs in the gms and other callitrichid species prompted an investigation to determine the prevalence of infection within the collection and evaluate treatment protocols. twenty-one callitrichids [nine gms, four golden lion tamarins (leo ... | 2007 | 17469272 |
| synteny of human chromosomes 14 and 15 in the platyrrhines (primates, platyrrhini). | in order to study the intra- and interspecific variability of the 14/15 association in platyrrhini, we analyzed 15 species from 13 genera, including species that had not been described yet. the dna libraries of human chromosomes 14 and 15 were hybridized to metaphases of alouatta guariba clamitans, a. caraya, a. sara, ateles paniscus chamek, lagothrix lagothricha, brachyteles arachnoides, saguinus midas midas, leontopithecus chrysomelas, callimico goeldii, callithrix sp., cebus apella, aotus nig ... | 2009 | 21637455 |
| pneumonia and bacteremia in a golden-headed lion tamarin (leontopithecus chrysomelas) caused by klebsiella pneumoniae subsp. pneumoniae during a translocation program of free-ranging animals in brazil. | klebsiella pneumoniae is an important emerging pathogen in humans, particularly the invasive hypermucoviscosity (hmv) phenotype. in addition, the organism is an important public health concern because of nosocomial infections and antimicrobial resistance. nonhuman primates in captivity are susceptible to klebsiella, particularly when a stress factor is involved. infections vary depending on the species but can cause significant morbidity and mortality in these animals. the objective of this stud ... | 2015 | 25943130 |
| negative serosurvey of toxoplasma gondii antibodies in golden-headed lion tamarin (leontopithecus chrysomelas) from niterói/rj, brazil. | new world nonhuman primates are highly susceptible to clinical toxoplasmosis. serum samples from 126 recently captured leontopithecus chrysomelas, from an exotic and invasive population, were tested for toxoplasma gondii antibodies by the modified agglutination test (mat, cut-off 1:25); all were seronegative. the mat is highly specific and is not species-specific. this is the first report of t. gondii survey in this tamarin in the wild. this result is consistent with prior reports that showed th ... | 2016 | 27925063 |
| lineage-specific serology confirms brazilian atlantic forest lion tamarins, leontopithecus chrysomelas and leontopithecus rosalia, as reservoir hosts of trypanosoma cruzi ii (tcii). | trypanosoma cruzi, the agent of chagas disease in humans, has a vast reservoir of mammalian hosts in the americas, and is classified into six genetic lineages, tci-tcvi, with a possible seventh, tcbat. elucidating enzootic cycles of the different lineages is important for understanding the ecology of this parasite, the emergence of new outbreaks of chagas disease and for guiding control strategies. direct lineage identification by genotyping is hampered by limitations of parasite isolation and c ... | 2016 | 27846858 |
| infection with trypanosoma cruzi tcii and tci in free-ranging population of lion tamarins (leontopithecus spp): an 11-year follow-up. | here, we present a review of the dataset resulting from the 11-years follow-up of trypanosoma cruzi infection in free-ranging populations of leontopithecus rosalia (golden lion tamarin) and leontopithecus chrysomelas (golden-headed lion tamarin) from distinct forest fragments in atlantic coastal rainforest. additionally, we present new data regarding t. cruzi infection of small mammals (rodents and marsupials) that live in the same areas as golden lion tamarins and characterisation at discrete t ... | 2015 | 25946156 |
| abundance of jackfruit (artocarpus heterophyllus) affects group characteristics and use of space by golden-headed lion tamarins (leontopithecus chrysomelas) in cabruca agroforest. | cabruca is an agroforest of cacao trees shaded by native forest trees. it is the predominant vegetation type throughout eastern part of the range of the golden-headed lion tamarins, leontopithecus chrysomelas, an endangered primate endemic to atlantic forest. understanding how lion tamarins use this agroforest is a conservation priority. to address this question, we documented the diet, home range size, group sizes and composition, density, number of litters and body condition of lion tamarins l ... | 2011 | 21079956 |
| the mother's participation in infant carrying in captive groups of leontopithecus chrysomelas and callithrix jacchus. | callithrix and leontopithecus exhibit ecological differences that have implications for the patterns of infant care. in c. jacchus, which uses a small home range because it depends mainly on plant exudates, infants can forage independently early in their life. l. chrysomelas, which feeds mainly on fruits and insects, needs larger home ranges and, therefore, its infants have a more extensive period of dependence. three families of c. jacchus and four families of l. chrysomelas were studied in cap ... | 1999 | 10394063 |
| preliminary findings on social and ecological correlates of a polyspecific association between a golden-headed lion tamarin (leontopithecus chrysomelas) and wied's marmosets (callithrix kuhlii). | the advantages of living in a group include feeding benefits and/or predation avoidance, while the disadvantages are typically related to competition. one way to avoid competition while maintaining the benefits of living in a group is to form interspecific associations with species with relatively little dietary overlap. here we report a stable association between a male golden-headed lion tamarin (ghlt), leontopithecus chrysomelas, and a group of wied's black-tufted-ear marmosets (wbtms), calli ... | 2017 | 27771832 |
| occurrence of prosthenorchis elegans in free-living primates from the atlantic forest of southern bahia, brazil. | parasite prevalence and abundance are important factors affecting species' conservation. during necropsies on a free-living golden-headed lion tamarin ( leontopithecus chrysomelas ) and two wied's marmosets ( callithrix kuhlii ) in the atlantic forest of southern bahia, brazil, we collected a large number of adult intestinal parasites that we identified as prosthenorchis elegans. this parasite is pathogenic for neotropical primates. prosthenorchis spp. infestation is influenced by diet with incr ... | 2016 | 26981688 |
| predation risk and the interspecific association of two brazilian atlantic forest primates in cabruca agroforest. | forming interspecific associations is one of many strategies adopted by primates in order to avoid predation. in addition to improved predator detection and avoidance, benefits of interspecific associations relate to improved foraging efficiency. in this study we tested these two hypotheses explaining associations between the endangered golden-headed lion tamarin, leontopithecus chrysomelas and the sympatric wied's marmoset, callithrix kuhlii. we estimated predation risk by recording the number ... | 2011 | 21455950 |
| survey of malassezia sp and dermatophytes in the cutaneous microbiome of free-ranging golden-headed lion tamarins (leontopithecus chrysomelas - kuhl, 1820). | data about the presence of fungi on the cutaneous surface of wild animals are scarce. the aim of this study was to survey dermatophytes and malassezia sp in the external ear canal and haircoat of leontopithecus chrysomelas. | 2017 | 28271525 |
| survey of plasmodium in the golden-headed lion tamarin (leontopithecus chrysomelas) living in urban atlantic forest in rio de janeiro, brazil. | communicating the presence of potential zoonotic pathogens such as plasmodium spp. in wild animals is important for developing both animal and human health policies. | 2016 | 26883507 |
| play behavior of the golden-headed lion tamarin in brazilian cocoa agroforests. | during play, primates may become more vulnerable to predation. our goal was to examine the potential role of predation risk on the play behavior of 3 groups of golden-headed lion tamarin, leontopithecus chrysomelas, in shaded cocoa agroforest (cabruca) of southern bahia, brazil. we identified the preferred (and safer) locations on vertical strata during playtime and investigated if frequency and duration of play differed according to group size. all groups preferred to play on the lower levels o ... | 2014 | 25116696 |
| brief communication: noninvasive measuring of operational tongue length in callitrichids. | callitrichids use their tongue in various social, ecological, and hygienic contexts. using a noninvasive measuring device, we obtained data on the operational tongue length (otl) in seven species from the family callitrichidae. otl (defined as the maximum tongue extension into the device) varied significantly between species and the width of the device, but did not correlate with mandible length; it is smaller in relation to mandible length in leontopithecus chrysomelas compared to species from ... | 2009 | 19350620 |
| assessment of dexmedetomidine/ketamine anesthesia in golden-headed lion tamarins (leontopithecus chrysomelas). | to compare the anesthetic and cardiovascular effects of dexmedetomidine/ketamine combinations in golden-headed lion tamarins. | 2004 | 15053752 |
| characteristics of reproductive biology and proximate factors regulating seasonal breeding in captive golden-headed lion tamarins (leontopithecus chrysomelas). | reproduction is highly demanding in terms of energy expenditure, and the costs and benefits associated with postponing or investing in a reproductive effort are crucial determinants of an individual's fitness. understanding the reproductive potential of a species under varying ecological conditions offers important insights into the dynamics of its social system. this study provides the first detailed analysis of the reproductive potential of wild- and captive-born golden-headed lion tamarins (l ... | 2003 | 12910464 |
| multiple breeding females in captive groups of golden-headed lion tamarins (leontopithecus chrysomelas): causes and consequences. | in callitrichidae, reproduction in subordinate females is generally inhibited but occurs in rare cases, possibly in association with the presence of an unrelated male, important food resources or low dispersal opportunities. this study investigates the occurrence of groups with multiple breeding females in captive golden-headed lion tamarins (leontopithecus chrysomelas), the factors leading to their formation and the consequences for the group. information obtained from studbook data on the worl ... | 2006 | 11275743 |
| incomplete sexual suppression in leontopithecus chrysomelas: a behavioural and hormonal study in a semi-natural environment. | | 2013 | 10050068 |
| maternal differences in infant carriage in golden-headed lion tamarins (leontopithecus chrysomelas). | infant-carrying behaviour was observed in two families of captive golden-headed lion tamarins. although the young were raised in almost identical social situations, we found a reversed involvement of mother-father pairs in the amount of time they carried their offspring. in one case, the parental division of carrying behaviour was consistent with the standard description for callitrichids in that the adult male was the primary carrier. in the other family, the mother carried the infant considera ... | 1992 | 1306174 |
| surveillance of arboviruses in primates and sloths in the atlantic forest, bahia, brazil. | from 2006 through 2014, we conducted seroepidemiological surveys on non-human primates and sloths to investigate the possible circulation of arboviruses in bahia atlantic forest, brazil. we collected a total of 196 samples from 103 leontopithecus chrysomelas, 7 sapajus xanthosternos, 22 bradypus torquatus and 7 bradypus variegatus. serum samples were tested using neutralization test and hemagglutination inhibition test to detect total antibodies against 26 different arboviruses. the overall prev ... | 2018 | 30117001 |
| a comparative study of litter size and sex composition in a large dataset of callitrichine monkeys. | in many birds and mammals, the size and sex composition of litters can have important downstream effects for individual offspring. primates are model organisms for questions of cooperation and conflict, but the factors shaping interactions among same-age siblings have been less-studied in primates because most species bear single young. however, callitrichines (marmosets, tamarins, and lion tamarins) frequently bear litters of two or more, thereby providing the opportunity to ask whether variati ... | 2019 | 31389057 |
| food sharing patterns in three species of callitrichid monkeys (callithrix jacchus, leontopithecus chrysomelas, saguinus midas): individual and species differences. | food sharing (fs) in cooperatively breeding callitrichids is unusual among nonhuman primates because they regularly share significant amounts of preferred food with immatures and engage in proactive fs. however, it is still unclear which classes of individuals (males or females, breeders or helpers) engage most in fs, and whether differences exist among callitrichid species. in the first part of this study, we characterized general fs patterns in common marmosets (callithrix jacchus). we found s ... | 2019 | 30985161 |
| characterization of the phylogenetic diversity of two novel species belonging to the genus bifidobacterium: bifidobacterium cebidarum sp. nov. and bifidobacterium leontopitheci sp. nov. | two bifidobacterium strains, i.e., 2176bt and 2177bt, were isolated from golden-headed lion tamarin (leontopithecus chrysomelas) and goeldi's monkey (callimico goeldii). isolates were shown to be gram-positive, non-motile, non-sporulating, facultative anaerobic and d-fructose 6-phosphate phosphoketolase-positive. phylogenetic analyses based on 16s rrna sequences, multilocus sequences (including hsp60, rpob, dnaj, dnag and clpc genes) and the core genome revealed that bifidobacterial strains 2176 ... | 2020 | 32065574 |
| pattern of late dna replication of the allocyclic x chromosome in cebus apella and leontopithecus rosalia chrysomelas fibroblasts. | the pattern of late dna replication in the allocyclic x chromosome has been studied in the primary fibroblasts of two neotropical primates (cebus apella and leontopithecus rosalia chrysomelas). a comparison with previous reports showed a pattern identical with that of (1) the allocyclic x chromosome of human fibroblasts, and (2) the allocyclic x chromosome of rhesus and cebus lymphocytes. our results show that at least in one species (c. apella), and probably in rhesus and leontopithecus, there ... | 1989 | 31964016 |
| leptospira spp., rotavirus, norovirus, and hepatitis e virus surveillance in a wild invasive golden-headed lion tamarin (leontopithecus chrysomelas; kuhl, 1820) population from an urban park in niterói, rio de janeiro, brazil. | the world currently faces severe biodiversity losses caused by anthropogenic activities such as deforestation, pollution, the introduction of exotic species, habitat fragmentation, and climate changes. disease ecology in altered environments is still poorly understood. the golden-headed lion tamarin (ghlt, leontopithecus chrysomelas) is an endangered species that became invasive in an urban park in niterói, rio de janeiro, brazil. the initially few invasive ghlt individuals became hundreds, adap ... | 2019 | 30828830 |
| seasonal effects on testes size and sustained semen quality in captive golden-headed lion tamarins, leontopithecus chrysomelas. | the golden-headed lion tamarin (leontopithecus chrysomelas) is an endangered primate that, according to timing of births, there seems to have seasonal reproductive patterns in captive populations inhabiting the southern hemisphere. the extent to which male tamarins have circannual cyclic fluctuations in testicular functions, however, remains unknown. changes in testis size and seminal variables, therefore, were evaluated during the rainy and dry seasons of the year in seven males. there was esti ... | 2020 | 32507254 |
| individual behavioral differences and health of golden-headed lion tamarins (leontopithecus chrysomelas). | individual behavioral differences may influence how animals cope with altered environments. depending on their behavioral traits, individuals may thus vary in how their health is affected by environmental conditions. we investigated the relationship between individual behavior of free-living golden-headed lion tamarins (leontopithecus chrysomelas) responding to a novel object (to assess exploration-avoidance), and their habitat use and health status (endoparasitism; clinical measures: biometric ... | 2020 | 32128855 |
| semen cryopreservation in golden-headed lion tamarin, leontopithecus chrysomelas. | wild animal genetic resource banking (grb) represents a valuable tool in conservation breeding programs, particularly in cases involving endangered species such as the golden-headed lion tamarin (leontopithecus chrysomelas). thus, we aimed to assess a sperm freezing protocol for golden-headed lion tamarins using two different exenders: botubov® (bb) and test yolk buffer® (tyb). ejaculates were collected by penile vibrostimulation from animals housed at são paulo zoological park foundation, são p ... | 2019 | 31788818 |
| eco-epidemiological profile and molecular characterization of simian foamy virus in a recently-captured invasive population of leontopithecus chrysomelas (golden-headed lion tamarin) in rio de janeiro, brazil. | simian foamy viruses (sfv) infect a wide range of old world and neotropical primates (np). unlike old world primates, little is known about the diversity and prevalence of sfv in np, mainly from a free-living population. phylogenetic analyses have shown that sfv coevolved with their hosts. however, viral strains infecting leontopithecus chrysomelas did not behave as expected for this hypothesis. the purpose of this study was to determine the eco-epidemiological profile and molecular characteriza ... | 2019 | 31658739 |
| spontaneous meningoencephalitis by staphylococcus aureus in an infant golden-headed lion tamarin (leontopithecus chrysomelas). | non-human primates are susceptible to many bacteria, some of which bear zoonotic potential. we report the pathologic features of spontaneous fulminating meningoencephalitis by staphylococcus aureus in a captive infant golden-headed lion tamarin (leontopithecus chrysomelas) from brazil. | 2019 | 31482588 |
| assessment of different sperm functional tests in golden-headed lion tamarins (leontopithecus chrysomelas). | the golden-headed lion tamarin (leontopithecus chrysomelas) is an endangered species endemic to brazil's atlantic forest, a shrinking biodiversity hotspot. as in other neotropical primates, its semen characteristics and freezability are poorly studied. hence, reproductive technologies for callitrichids would greatly benefit from reliable methods of semen analysis. in a bid to promote reproductive research in tamarins, we validated simple and inexpensive sperm function tests that can be used to m ... | 2019 | 31318077 |
| malassezia japonica is part of the cutaneous microbiome of free-ranging golden-headed lion tamarins (leontopithecus chrysomelas - kuhl, 1820). | we investigated malassezia spp. in external ear canal and haircoat of free-ranging golden-headed lion tamarins (leontopithecus chrysomelas). a total of 199 animals were restrained, and 597 clinical samples were collected. after the amplification of the 26s ribosomal gene by polymerase chain reaction (pcr), the rflp technique was performed. two additional pcr protocols were performed in 10 randomly selected strains. malassezia sp. was isolated in 38.2% (76/199) of the animals and 14.6% (87/597) o ... | 2020 | 31220312 |
| early reversal of ketamine/dexmedetomidine chemical immobilization by atipamezole in golden-headed lion tamarins (leontopithecus chrysomelas). | a smooth and rapid recovery from anesthesia allowing safe release is desirable, especially for wild species. this study describes the clinical effects of the combination of dexmedetomidine and ketamine and the partial reversal with atipamezole in golden-headed lion tamarins. | 2019 | 31194266 |
| hematological evaluation of free-living golden-headed lion tamarins (leontopithecus chrysomelas) from an urban atlantic forest. | the atlantic forest where the animals were captured is surrounded by residences, so this close contact could favor the presence of disease-transmitting pathogens, putting the local population at risk. for these and other factors, it is important to perform laboratory tests enabling the performance of important diagnoses. | 2019 | 30520041 |
| population genetic structure of an endangered endemic primate (leontopithecus chrysomelas) in a highly fragmented atlantic coastal rain forest. | this study evaluated the genetic structure of wild populations of the endangered primate, leontopithecus chrysomelas. we tested the assumption that populations of l. chrysomelas, given their larger population size and a higher degree of habitat continuity, would have higher genetic diversity and less genetic structuring than other lion tamarins. we used 11 microsatellites and 122 hair samples from different locations to assess their genetic diversity and genetic structure, and to make inferences ... | 2018 | 30286480 |
| molecular detection of borrelia burgdorferi in free-living golden headed lion tamarins (leontopithecus chrysomelas) in rio de janeiro, brazil. | | 2018 | 30231164 |
| spontaneous retroperitoneal liposarcoma in a free-ranging juvenile golden-headed lion tamarin (leontopithecus chrysomelas). | malignant adipocytic neoplasia is rare among nonhuman primates. we report the gross and microscopic features of a retroperitoneal liposarcoma with myxofibrosarcoma-like dedifferentiation in a free-ranging juvenile golden-headed lion tamarin (leontopithecus chrysomelas). to our knowledge, this is the first report of such tumor subtype in new world primates. | 2019 | 30230546 |
| hepatocellular carcinoma in two captive golden-headed lion tamarins (leontopithecus chrysomelas). | two cases of hepatocellular carcinoma (hcc) in 2 female captive golden-headed lion tamarins (leontopithecus chrysomelas) are described. hcc was diagnosed in both, with pulmonary metastasis in one of them. neoplastic cells were positive for hepatocyte-specific antigen (hsa) by immunohistochemistry, confirming the diagnosis. | 2018 | 29171026 |
| evaluation of three chemical immobilization protocols in golden-headed lion tamarins (leontopithecus chrysomelas) undergoing vasectomy surgery. | the golden-headed lion tamarin (leontopithecus chrysomelas), originally endemic to bahia, was introduced in rio de janeiro. the species is currently found in remaining forests within the region of original occupation of the golden lion tamarin (leontopithecus rosalia), which may compromise the survival of the golden lion tamarin. groups of golden-headed lion tamarins were captured and translocated to bahia. however, the area chosen reached its limit and males underwent to vasectomy procedures. | 2018 | 29114906 |
| reproduction in captive lion tamarins (leontopithecus): seasonality, infant survival, and sex ratios. | diversity in reproductive and social systems characterizes the primate family callitrichidae. this paper contributes to our appreciation of this diversity by presenting the first detailed comparative analysis of captive breeding in three species of lion tamarins (leontopithecus chrysomelas, l. chrysopygus, and l. rosalia) housed at the centro de primatologia do rio de janeiro. the annual pattern of reproduction in all three species of leontopithecus was markedly seasonal, with births occurring d ... | 1996 | 31918488 |
| long-call structure and its relation to taxonomy in lion tamarins. | recent evidence on craniodental morphology suggests the acceptance of three species of lion tamarins (leontopithecus). confirmatory evidence is presented here using the morphology of long-call vocalizations recorded from several individuals of each type of lion tamarin. recordings were made of leontopicthecus rosalia, leontopithecus chrysopygus, and leontopithecus chrysomelas at the centro de primatologia do rio de janeiro (feema) and of l. rosalia at monkey jungle in florida. thirty separate pa ... | 1986 | 31979452 |