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dc.contributor.author
Agostini, Ilaria
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dc.contributor.author
Holzmann, Ingrid
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dc.contributor.author
Di Bitetti, Mario Santiago
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dc.date.available
2018-09-12T18:31:59Z
dc.date.issued
2010-02
dc.identifier.citation
Agostini, Ilaria; Holzmann, Ingrid; Di Bitetti, Mario Santiago; Are howler monkey species ecologically equivalent? trophic niche overlap in syntopic alouatta guariba clamitans and Alouatta caraya; Wiley-liss, Div John Wiley & Sons Inc; American Journal Of Primatology; 72; 2; 2-2010; 173-186
dc.identifier.issn
0275-2565
dc.identifier.uri
http://hdl.handle.net/11336/59369
dc.description.abstract
According to the principle of competitive exclusion, niche differentiation allows the stable coexistence of closely related species. We analyzed dietary profile and diversity, and dietary overlap between syntopic brown howlers (BR; Alouatta guariba clamitans) and black and gold howlers (BLG; A. caraya) in the Atlantic Forest of NE Argentina, with the objective of evaluating the degree of trophic niche overlap and potential interspecific competition for food. During 12 months, we collected data on feeding behavior of two groups of each howler species using the scan sampling method, together with data on food availability. Both at the group-and species-level, we analyzed feeding behavior in terms of monthly percentages of time spent feeding on each food type and specific food item, dietary diversity (Shannon index H0), and we estimated dietary overlap using the percentage index and the Morisita-Horn index (CH). Across months, both howlers showed species-specific preferences for certain food items, and BLG had a more diverse diet (mean7SE, H0 52.7770.08) than BR (H0 52.3970.09). However, diets of both species overlapped extensively (percentage index545.6472.97%; CH 50.670.05) and diets of conspecific groups did not overlap more than diets of groups of different species. Given their high degree of trophic overlap, syntopic BR and BLG meet one of the conditions necessary for interspecific food competition to occur. Although at present we lack direct evidence for interspecific competition in these howler species, we conclude that high levelsof niche overlap mayhave an important rolein maintaining the essentially parapatric distribution of howler species throughout the Neotropics. © 2009 Wiley-Liss, Inc.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley-liss, Div John Wiley & Sons Inc
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Argentina
dc.subject
Black And Gold Howlers
dc.subject
Brown Howlers
dc.subject
Contact Zone
dc.subject
Interspecific Competition
dc.subject.classification
Zoología, Ornitología, Entomología, Etología
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Are howler monkey species ecologically equivalent? trophic niche overlap in syntopic alouatta guariba clamitans and Alouatta caraya
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-08-30T14:36:20Z
dc.journal.volume
72
dc.journal.number
2
dc.journal.pagination
173-186
dc.journal.pais
Estados Unidos
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dc.description.fil
Fil: Agostini, Ilaria. Centro de Investigaciones del Bosque Atlántico; Argentina. Istituto Di Scienze E Tecnologie Della Cognizione, Rome;
dc.description.fil
Fil: Holzmann, Ingrid. Centro de Investigaciones del Bosque Atlántico; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Biología Subtropical. Instituto de Biología Subtropical - Nodo Posadas | Universidad Nacional de Misiones. Instituto de Biología Subtropical. Instituto de Biología Subtropical - Nodo Posadas; Argentina
dc.description.fil
Fil: Di Bitetti, Mario Santiago. Centro de Investigaciones del Bosque Atlántico; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Biología Subtropical. Instituto de Biología Subtropical - Nodo Posadas | Universidad Nacional de Misiones. Instituto de Biología Subtropical. Instituto de Biología Subtropical - Nodo Posadas; Argentina
dc.journal.title
American Journal Of Primatology
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1002/ajp.20775
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1002/ajp.20775
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