Influence of seasonality, group size, and presence of a congener on activity patterns of howler monkeys

Autores
Agostini, Ilaria; Holzmann, Ingrid; Di Bitetti, Mario Santiago
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
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.
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
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
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
Materia
Alouatta Caraya
Alouatta Guariba Clamitans
Energy Minimization
Interspecific Competition
Time Budget
Time Partitioning
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/17257
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/17257
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Influence of seasonality, group size, and presence of a congener on activity patterns of howler monkeysAgostini, IlariaHolzmann, IngridDi Bitetti, Mario SantiagoAlouatta CarayaAlouatta Guariba ClamitansEnergy MinimizationInterspecific CompetitionTime BudgetTime Partitioninghttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Ecologically 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.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; ItaliaFil: 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; ArgentinaFil: 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; ArgentinaOxford University Press2012-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/17257Agostini, 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; 645-6570022-23721545-1542enginfo:eu-repo/semantics/altIdentifier/doi/10.1644/11-MAMM-A-070.1info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/jmammal/article-lookup/doi/10.1644/11-MAMM-A-070.1info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:03:07Zoai:ri.conicet.gov.ar:11336/17257instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-10 13:03:07.308CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Influence of seasonality, group size, and presence of a congener on activity patterns of howler monkeys
title Influence of seasonality, group size, and presence of a congener on activity patterns of howler monkeys
spellingShingle Influence of seasonality, group size, and presence of a congener on activity patterns of howler monkeys
Agostini, Ilaria
Alouatta Caraya
Alouatta Guariba Clamitans
Energy Minimization
Interspecific Competition
Time Budget
Time Partitioning
title_short Influence of seasonality, group size, and presence of a congener on activity patterns of howler monkeys
title_full Influence of seasonality, group size, and presence of a congener on activity patterns of howler monkeys
title_fullStr Influence of seasonality, group size, and presence of a congener on activity patterns of howler monkeys
title_full_unstemmed Influence of seasonality, group size, and presence of a congener on activity patterns of howler monkeys
title_sort Influence of seasonality, group size, and presence of a congener on activity patterns of howler monkeys
dc.creator.none.fl_str_mv Agostini, Ilaria
Holzmann, Ingrid
Di Bitetti, Mario Santiago
author Agostini, Ilaria
author_facet Agostini, Ilaria
Holzmann, Ingrid
Di Bitetti, Mario Santiago
author_role author
author2 Holzmann, Ingrid
Di Bitetti, Mario Santiago
author2_role author
author
dc.subject.none.fl_str_mv Alouatta Caraya
Alouatta Guariba Clamitans
Energy Minimization
Interspecific Competition
Time Budget
Time Partitioning
topic Alouatta Caraya
Alouatta Guariba Clamitans
Energy Minimization
Interspecific Competition
Time Budget
Time Partitioning
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv 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.
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
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
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
description 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.
publishDate 2012
dc.date.none.fl_str_mv 2012-06
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/17257
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
0022-2372
1545-1542
url http://hdl.handle.net/11336/17257
identifier_str_mv 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
0022-2372
1545-1542
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1644/11-MAMM-A-070.1
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/jmammal/article-lookup/doi/10.1644/11-MAMM-A-070.1
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Oxford University Press
publisher.none.fl_str_mv Oxford University Press
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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