35,073 research outputs found
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
Figure 6 in Taxonomic review of the New World tamarins (Primates: Callitrichidae)
No full textFigure 6. The geographical distributions of the tamarins of the mystax group (orange), the oedipus group (purple), and the midas and bicolor groups (green). Map by Stephen D. Nash. © Conservation International.Published as part of Rylands, Anthony B., Heymann, Eckhard W., Alfaro, Jessica Lynch, Buckner, Janet C., Roos, Christian, Matauschek, Christian, Boubli, Jean P., Sampaio, Ricardo & Mittermeier, Russell A., 2016, Taxonomic review of the New World tamarins (Primates: Callitrichidae), pp. 1003-1028 in Zoological Journal of the Linnean Society 177 (4) on page 1014, DOI: 10.1111/zoj.12386, http://zenodo.org/record/536549
When to feed on gums: Temporal patterns of gummivory in wild tamarins,Saguinus mystaxand Saguinus fuscicollis(Callitrichinae)
No full textThis study examines the temporal patterning of gum feeding in two species of sympatric tamarin monkeys, Saguinus mystax and Saguinus fuscicollis, during the diurnal activity period. The number and duration of visits to gum sources and number of gum feeding records are used as parameters to analyze the gum feeding itinerary. Both visits to gum sources and gum feeding records show clear peaks in the afternoon, and the duration of visits to gum sources is longer in the afternoon. The observed pattern is interpreted as a behavioral strategy to prolong the time gum remains in the gastrointestinal tract. Only through prolonged gut retention can the β-linked carbohydrates be subjected to microbial fermentation. It is suggested that feeding itineraries receive more attention in primate field studies to provide information that can help to identify optimal strategies of feeding regimens under captive conditions
Training in occupational medicine: Jurisprudential malfunctions in the Italian system and European perspectives
No full textBackground. To practice occupational health in Europe, a medical doctor must qualify in occupational medicine. This requires a period of postgraduate specialist medical training lasting a minimum of four years, in conformity with European regulations, to obtain a certificate of completion of training which is then mutually recognized within the entire European Union. Discussion. In 2002 an Italian law allowed doctors specialized in public health medicine and legal/forensic medicine to also practice as consultants in occupational medicine in the country. However a subsequent law in 2008 determined that only physicians specialized in occupational medicine could freely practice as consultants in this discipline. The other two categories (consultants in public health medicine and consultants in legal/forensic medicine) were required to undertake additional training (a Master course) to qualify as consultants in occupational medicine. Conclusions. Doctors who entered postgraduate training in public health or legal/forensic medicine before 2008, with the option to practice also as consultants in occupational medicine upon completion of their training, suffered an unprecedented and legally questionable retroactive application of this new law which stripped them of previously acquired rights. Moreover, even after qualifying by undertaking this extra training in occupational medicine, the latter two categories of doctors do not have their training recognized in other member states of the European Union. To disallow the rights of doctors qualified in occupational medicine to work as consultants in the latter medical discipline elsewhere within the European Union seems a clear violation of professional rights and, as such, legal action could be taken to submit this issue to European attention
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No full textCallicebus and the pitheciins are closely related; however, differences in their diets and dental morphology suggest that they differ in the use of mechanically protected food. We describe physical traits of fruits consumed by white-handed titi monkeys (Callicebus lugens) and determine their influence on fruit part selection and immediate seed fate after fruit handling. We tested two hypotheses about the effects of mechanical fruit traits on fruit part selection and seed fate: (1) fruits selected for seed consumption are harder than fruits selected for their fleshy parts and (2) consumed seeds are softer than seeds with other fates. In addition, we analyzed the influence of other physical fruit traits on fruit part selection and seed fate. C. lugens included 69 species in its diet, from which it mainly consumed their fleshy parts. It also consumed seeds, alone or with fleshy fruit parts, but most of them ended up close to parent trees after being dropped or spat out. The first hypothesis was supported while the second was rejected, indicating that C. lugens tends to rely on hard fruits for obtaining seeds, while seed hardness had no influence on fruit part selection and seed fate, contrasting with the pattern reported for Pithecia and Chiropotes in other studies. Ripeness was the most influential factor for fruit part and seed fate discrimination. Results suggest a tendency to sclerocarpic foraging in C. lugens when feeding on seeds. Am J Phys Anthropol 2012. (c) 2012 Wiley Periodicals, Inc.Margot Marsh Biodiversity Foundation; Idea Wil
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