1,721,167 research outputs found
Interspecific Variation of Scent-Marking Behaviour in Wild Tamarins, Saguinus mystax and Saguinus fuscicollis
No full textThe scent-marking behaviour of sympatric moustached,
Saguinus mystax
, and saddle-back tamarins,
Saguinus fuscicollis
, was compared in order to explore interspecific differences and potential sources of variation. The author examined basic patterns of scent marking (types, intensity, complexity), substrate use (type, orientation, height), and social patterning of scent marking in three groups of
S. mystax
and one group of
S. fuscicollis
at the Estación Biológica Quebrada Blanco, Peruvian Amazonia.
S. mystax
and
S. fuscicollis
differed significantly in the relative frequency of different types, and in the intensity and complexity of scent marking. Only
S. fuscicollis
showed allomarking. They also differed significantly in the type, orientation and height of substrates used for scent marking which corresponded to general differences in substrate use. In
S. fuscicollis
, but very rarely in
S. mystax
, two or more group members marked the same site sequentially or simultaneously. ‘Collective scent marking’, i.e. simultaneous scent marking by most or all group members, occurred only in
S. fuscicollis
. Since both tamarin species live sympatrically in mixed-species groups, ecological factors are unlikely to account for the differences found in scent-marking behaviour (except for differences in substrate use). They probably relate to as yet unknown differences in social and reproductive strategies of the two species
Primate abundance and habitat preferences on the lower Urubamba and Tambo rivers, central-eastern Peruvian Amazonia.
No full textAQUINO, Rolando, CORNEJO, Fanny M. y HEYMANN, Eckhard W. Primate abundance and habitat preferences on the lower Urubamba and Tambo rivers, central-eastern Peruvian Amazonia. Primates. [en línea]. 2013, vol. 54, no. 4, p. 377-383. ISSN 0032-8332.We report information on population density, group size, and habitat preferences of primates along the lower Rio Urubamba and in the Rio Urubamba-Rio Tambo interfluvium, in central-eastern Peruvian Amazonia, an area that has been little explored with regard to its primate fauna. During 425 km of transect walks in October-November 2008 and April-May 2009 totally 174 groups of nine primate species were encountered, the most common being Callicebus brunneus (45 groups), Saguinus imperator (41 groups), and Aotus nigriceps (26 groups). Group sizes were smallest for A. nigriceps and C. brunneus (mean of 2.8 and 2.9, respectively) and largest for Saimiri boliviensis (mean 15.6). Population densities were lowest for Lagothrix cana (3.3 individuals/km(2)) and highest for A. nigriceps (31.1 individuals/km(2)). Groups of C. brunneus, S. imperator, S. boliviensis, Cebus albifrons, and Cebus apella were most frequently (83 % of sightings) encountered in semi-dense or in open primary forest that included stands of bamboo (Guadua sarcocarpa) or where bamboo was a very common species
Field Observations of the Golden-Mantled Tamarin, Saguinus tripartitus, on theRío Curaray, Peruvian Amazonia
No full textDuring a primatological survey on the Río Curaray in north-eastern Peruvian Amazonia, observations on the ecology and behaviour of the golden-mantled tamarin,
Saguinus tripartitus
, were made. Two groups consisting of 6 and 9 individuals were observed. The diet of one group that was observed in some detail consisted of fruit, insects (tettigoniid orthopterans) and gums. Patterns of height use were very similar to those observed in saddle-back tamarins,
Saguinus fuscicollis
. This similarity and the lack of evidence for sympatry with either
S. fuscicollis
or
S. nigricollis
lead to the suggestion that
S. tripartitus
should be reconsidered as a subspecies of
S. fuscicollis
rather than a species on its own; alternatively, other subspecies of
S. fuscicollis
should be raised in taxonomic rank
Interspecific relations in a mixed-species troop of moustached tamarins,Saguinus mystax, and saddle-back tamarins,Saguinus fuscicollis (Platyrrhini:Callitrichidae), at the Río Blanco, Peruvian Amazonia
No full textOn the identity of the tamarin AMNH 98303 (“<i>Saguinus fuscicollis tripartitus</i>”; Primates: Haplorrhini: Simiiformes: Platyrrhini: Callitrichidae)
No full textAbstract. The American Museum of Natural History houses the skin of a tamarin (AMNH 98303) labelled as Saguinus fuscicollis tripartitus. However, the specimen does not match the phenotype of this taxon, now named Leontocebus tripartitus, nor that of any other known species or subspecies of Leontocebus. In this note, we review past taxonomic revisions of the genus Saguinus – revisions that were largely driven by the contentious species or subspecies status of the golden-mantled saddleback tamarin S. fuscicollis tripartitus – and compare the phenotype of AMNH 98303 with those of other tamarins in the same genus to discuss the possible status of this specimen
Urine washing and related behaviour in wild moustached tamarins,Saguinus mystax (callitrichidae)
No full textHabituation, trapping, observer effects: reflections on the impact of humans and field study techniques on the behaviour of small primates
No full text- …
