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dc.contributor.author Agostini, Ilaria
dc.contributor.author Holzmann, Ingrid
dc.contributor.author Di Bitetti, Mario Santiago
dc.date.available 2017-06-01T13:14:25Z
dc.date.issued 2012-06
dc.identifier.citation Agostini, Ilaria; Holzmann, Ingrid; Di Bitetti, Mario Santiago; Influence of seasonality, group size, and presence of a congener on activity patterns of howler monkeys; Oxford University Press; Journal Of Mammalogy; 93; 3; 6-2012; 645-657
dc.identifier.issn 0022-2372
dc.identifier.uri http://hdl.handle.net/11336/17257
dc.description.abstract Ecologically similar and closely related species in sympatry may differ in their activity patterns to avoid interspecific contest competition. We here present the 1st study aimed at evaluating the effects of seasonality, group size, and presence of a congener on the activity patterns of 2 syntopic species of howler monkeys, the brown howler (Alouatta guariba clamitans) and the black-and-gold howler (A. caraya), in northeastern Argentina. During 12 months, we collected activity data on 2 groups of each species characterized by different sizes and degrees of home-range overlap, together with data on food availability. We analyzed seasonal variation in activity budgets and daily activity patterns, as well as the relationships between monthly activity budget and food availability, diet, and climate, both within and between species. Black-and-gold howlers, more clearly than brown howlers, adopted an energy-minimization strategy, reducing costly activities such as moving and traveling, during the lean season. Within each howler species, individuals in the largest group showed a greater proportion of time spent moving or traveling, or both, compared to individuals in the smallest group, suggesting the existence of within-group food competition. Juveniles of both species rested less and moved and socialized more than adults. Overall, black-and-gold howlers spent proportionately more time moving and traveling, and less time resting, probably due to their larger mean group size, than brown howlers. Daily feeding peak times diverged only slightly among groups in the lean season, but differences between groups of different species with overlapping home ranges were not larger than those among scarcely or nonoverlapping groups (of same or different species). In conclusion, even though the 2 howler species showed differences in activity patterns, mainly related to differences in their response to food seasonality, and in group size, we found no evidence of time partitioning.
dc.format application/pdf
dc.language.iso eng
dc.publisher Oxford University Press
dc.rights info:eu-repo/semantics/restrictedAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject Alouatta caraya
dc.subject Alouatta guariba clamitans
dc.subject Energy minimization
dc.subject Interspecific competition
dc.subject Time budget
dc.subject Time partitioning
dc.subject.classification Ecología
dc.subject.classification Ciencias Biológicas
dc.subject.classification CIENCIAS NATURALES Y EXACTAS
dc.title Influence of seasonality, group size, and presence of a congener on activity patterns of howler monkeys
dc.type info:eu-repo/semantics/article
dc.type info:ar-repo/semantics/artículo
dc.type info:eu-repo/semantics/publishedVersion
dc.date.updated 2017-02-06T14:24:45Z
dc.identifier.eissn 1545-1542
dc.journal.volume 93
dc.journal.number 3
dc.journal.pagination 645-657
dc.journal.pais Estados Unidos
dc.journal.ciudad Lawrence
dc.description.fil Fil: Agostini, Ilaria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Biología Subtropical. Instituto de Biología Subtropical - Nodo Puerto Iguazu | Universidad Nacional de Misiones. Instituto de Biología Subtropical. Instituto de Biología Subtropical - Nodo Puerto Iguazu; Argentina. Centro de Investigaciones del Bosque Atlantico; Argentina. Consiglio Nazionale delle Ricerche. Istituto di Scienze e Tecnologie della Cognizione; Italia
dc.description.fil Fil: Holzmann, Ingrid. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Bio y Geociencias del Noa. Universidad Nacional de Salta. Facultad de Cs.naturales. Museo de Cs.naturales. Instituto de Bio y Geociencias del Noa; Argentina. Centro de Investigaciones del Bosque Atlantico; Argentina
dc.description.fil Fil: Di Bitetti, Mario Santiago. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Biología Subtropical. Instituto de Biología Subtropical - Nodo Puerto Iguazu | Universidad Nacional de Misiones. Instituto de Biología Subtropical. Instituto de Biología Subtropical - Nodo Puerto Iguazu; Argentina. Centro de Investigaciones del Bosque Atlantico; Argentina
dc.journal.title Journal Of Mammalogy
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1644/11-MAMM-A-070.1
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/jmammal/article-lookup/doi/10.1644/11-MAMM-A-070.1


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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)