| phylogeny of primate t lymphotropic virus type 1 (ptlv-1) including various new asian and african non-human primate strains. | to further unravel intra- and interspecies ptlv-1 evolution in asia and africa, we phylogenetically analysed 15 new stlv-1 ltr and env sequences discovered in eight different asian and african non-human primate species. we show that orang-utan stlv-1s form a tight, deeply branching monophyletic cluster between asian stlv-1 macaque species clades, suggesting natural cross-species transmission. novel viruses of macaca maura, macaca nigra and siamang cluster with other sulawesian stlv-1s, demonstra ... | 2007 | 16931175 |
| the effects of hybridization on growth allometry and craniofacial form in sulawesi macaques. | the present research investigates the effects of hybridization between macaca maurus and m. tonkeana on adult male form and patterns of growth allometry. comparisons of adult hybrid mean phenotypic values with the adult averages of the parental species indicate a condition of heterosis for cranial vault length and crown-rump length. negative heterosis is indicated for body mass. regression parameters describing growth allometry are generated for four craniofacial measurement variables and one bo ... | 2005 | 15996717 |
| motor activity of different-aged cercopithecidae: silvered-leaf monkey (presbytis cristatus esch.), lion-tailed monkey (macaca silenus l.), moor macaque (macaca maura cuv.) as observed in the zoological garden, berlin (west). | the activity of different-aged monkeys belonging to three species of cercopithecidae was quantitatively analyzed in a 1 1/2-year study. the species, silvered-leaf monkey (presbytis cristatus esch.), lion-tailed monkey (macaca silenus l.) and moor macaque (macaca maura cuv.) were observed in the zoological garden, berlin (west). the data of a combined cross-sectional analysis across all three species indicate that the course of age-related changes in the frequency of movement can be depicted as g ... | 1986 | 3721206 |
| [a computer ethological-pharmacological analysis of the intraspecific behavior of primates]. | experiments were performed on primates (cercopithecus sabeus, macaca maurus, cebus apella). possibility to formalize the structure of normal and pathological monkey behaviour was shown by computerized technique. rigid dominant-subordinate structures (linear type) were demonstrated on macaca maurus, cercopithecus sabeus, cebus apella. these structures display some variants of normal relationship between monkeys. raising in isolation from conspecifics determines behavioural disadaptation and patho ... | 1988 | 3188647 |
| evidence of gene flow between sulawesi macaques. | a pilot field study was conducted in sulawesi (indonesia) to assess the status of macaque populations on the island. wild and captive animals were sampled, mainly in border areas between presumed different species. the five species investigated were macaca maurus, m. tonkeana, m. hecki, m. nigrescens, and m. nigra, for which morphological and gene frequency data suggested the presence of hybridization zones. some individuals within these zones showed intermediate or mosaic morphology between par ... | 1989 | 31964052 |
| postconflict affiliative contacts between former opponents among wild moor macaques (macaca maurus). | agonistic interactions and postconflict behavior of moor macaques (macaca maurus) were studied in their natural habitat, south sulawesi, indonesia. individuals were involved in 0.28 agonistic interactions per hour. forty-two percent of agonistic interactions were followed by affiliative contacts between the former opponents. such affiliative contacts occurred within 2 minutes of the agonistic interaction and were most often initiated by the victim's approach to the aggressor. the most common pos ... | 1996 | 31918476 |
| activity budget, home range, and habitat use of moor macaques (macaca maura) in the karst forest of south sulawesi, indonesia. | primate behavior can be responsive to the different ecological pressures associated with different habitats, as well as to the effects of direct and indirect anthropogenic disturbance. the karst forest ecosystem of south sulawesi (indonesia) represents one of the few intact forests available for residual populations of the moor macaque, but our understanding of its habitat use is limited. in the present study, this gap in knowledge was addressed by observing the activity and habitat use of two g ... | 2020 | 32170514 |
| interactions with humans are jointly influenced by life history stage and social network factors and reduce group cohesion in moor macaques (macaca maura). | human-wildlife encounters are becoming increasingly frequent across the globe, often leading people to interact with and feed wild animals and impacting animal behaviour and ecology. although the nature of human-wildlife interactions has been well documented across a number of species, we still have limited understanding as to why some individual animals interact more frequently with humans than others. additionally, we lack a comprehensive understanding of how these interactions influence anima ... | 2019 | 31882849 |
| play behavior in immature moor macaques (macaca maura) and japanese macaques (macaca fuscata). | play is widespread across mammalian taxa, but species strongly vary in the ways they play. in less despotic primate species (i.e., with less steep dominance hierarchies, less severe conflicts, and more reconciliation), play has been described as being more frequent, cooperative, and freely expressed. to study the link between social play and dominance style, we compared play behavior in free-ranging infants, juveniles and subadults of more despotic japanese macaques (macaca fuscata, n = 24) and ... | 2020 | 32882065 |
| a comparison of cell density and serotonergic innervation of the amygdala among four macaque species. | the genus macaca is an ideal model for investigating the biological basis of primate social behavior from an evolutionary perspective. a significant amount of behavioral diversity has been reported among the macaque species, but little is known about the neural substrates that support this variation. the present study compared neural cell density and serotonergic innervation of the amygdala among four macaque species using histological and immunohistochemical methods. the species examined includ ... | 2020 | 33022073 |
| normal serum biochemical and hematological values of the sulawesi macaques. | sulawesi macaque (sm) species are currently of interest to primatologists for genetic and behavioral studies world wide. however, there are no published reference hematological and serum biochemical profile values for several of the seven sm species. twenty-five clinically healthy, outdoor housed, ketamine sedated macaca tonkeana and macaca maurus were serially sampled (two to four times) over a 16-month period (n = 68). normal ranges were defined to include two standard deviations and 2.5-97.5 ... | 1995 | 7563007 |
| mothers in a wild group of moor macaques (macaca maurus) are more attractive to other group members when holding their infants. | social interactions between mothers that were holding their infants and other group members were studied in a wild group of moor macaques (macaca maurus). affiliative approaches to infants (aai) by group members that were accompanied with particular behaviours, such as mouthing and touching or affiliative grunts, were observed frequently. females approached mothers with infants more frequently than did males in all age classes. female reproductive status, parity and dominance relationships betwe ... | 1997 | 9212457 |
| a preliminary study on the variables correlated with the emission of loud calls in wild moor macaques (macaca maurus). | | 1998 | 9751831 |
| relaxed dominance relations among female moor macaques (macaca maurus) in their natural habitat, south sulawesi, indonesia. | field observations were made of the social behaviour of moor macaques (macaca maurus), one of several species of macaques that live in sulawesi, indonesia. the present study was designed to characterise the expression of their relaxed dominance style among females in their natural habitat and to examine the factors influencing the evolution of the dominance style. the dominance rank order among adult females in the study group was linear, and it was essentially stable during the study period of ... | 1998 | 9885335 |
| neuropeptide y-immunoreactive neurons in the cerebral cortex of humans and other haplorrhine primates. | we examined the distribution of neurons immunoreactive for neuropeptide y (npy) in the posterior part of the superior temporal cortex (brodmann's area 22 or area tpt) of humans and nonhuman haplorrhine primates. npy has been implicated in learning and memory and the density of npy-expressing cortical neurons and axons is reduced in depression, bipolar disorder, schizophrenia, and alzheimer's disease. due to the role that npy plays in both cognition and neurodegenerative diseases, we tested the h ... | 2013 | 23042407 |
| life history and demography of wild moor macaques (macaca maurus): summary of ten years of observations. | data on the life history and demography of individual species are indispensable when we discuss social behavior from an evolutionary perspective, and when we attempt to make adequate conservation plans. this is the first report on the life history and demography of moor macaques in their natural habitat. moor macaques (macaca maurus) in the karaenta nature reserve, south sulawesi, indonesia, have been observed since 1981. individual identification of group members began in 1988. the size of the ... | 2000 | 10993134 |
| intergroup encounters in wild moor macaques (macaca maurus). | we studied intergroup encounters among moor macaques at the karaenta nature reserve, south sulawesi, indonesia. group b has been observed on the basis of individual identification since 1988. we analyzed 85 encounters between members of group b and members of neighboring groups from september 1990 to november 1998. the average frequency of intergroup encounters was 0.035/hour. neither the presence of females in estrus nor rainfall had an effect on encounter frequency. behaviors of moor macaques ... | 2002 | 12082300 |
| the evolution of "egalitarian" and "despotic" social systems among macaques. | recent studies of captive macaques have revealed considerable inter-species differences in dominance styles among females. in "egalitarian" species such as stumptail (macaca arctoides) or tonkean macaques (m. tonkeana), social interactions are more symmetrical and less kin-biased than in "despotic" species such as japanese (m. fuscata) or rhesus macaques (m. mulatta). field observations of moor macaques (m. maurus), close relatives of tonkean macaques, suggest that tolerance during feeding chara ... | 1999 | 23179529 |
| species-specific distributions of tyrosine hydroxylase-immunoreactive neurons in the prefrontal cortex of anthropoid primates. | in this study, we assessed the distribution of cortical neurons immunoreactive for tyrosine hydroxylase (th) in prefrontal cortical regions of humans and nonhuman primate species. immunohistochemical methods were used to visualize th-immunoreactive (th-ir) neurons in areas 9 (dorsolateral prefrontal cortex) and 32 (anterior paracingulate cortex). the study sample included humans, great apes (chimpanzee, bonobo, gorilla, orangutan), one lesser ape (siamang), and old world monkeys (golden guenon, ... | 2009 | 19041377 |