River crossings by Ateles geoffroyi and Alouatta pigra in southern Mexico: A preliminary report

During a nine month field study, we assess the ability of spider (Ateles geoffroyi) and howler (Alouatta pigra) monkeys to cross a large Mesoamerican river, and if this behavior is related to deforestation and/or human population size on the disturbed riverbank. The study was conducted along the Lac...

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Autores principales:	CHAVES,ÓSCAR M, STONER,KATHRYN E
Lenguaje:	English
Publicado:	Sociedad de Biología de Chile 2010
Materias:	Alouatta pigra Ateles geoffroyi fragmentation Lacantún River river crossings
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2010000300010
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spelling	oai:scielo:S0716-078X20100003000102011-01-03River crossings by Ateles geoffroyi and Alouatta pigra in southern Mexico: A preliminary reportCHAVES,ÓSCAR MSTONER,KATHRYN E Alouatta pigra Ateles geoffroyi fragmentation Lacantún River river crossings During a nine month field study, we assess the ability of spider (Ateles geoffroyi) and howler (Alouatta pigra) monkeys to cross a large Mesoamerican river, and if this behavior is related to deforestation and/or human population size on the disturbed riverbank. The study was conducted along the Lacantún River, southern Mexico, which .divides the Montes Azules Biosphere Reserve and the Marqués de Comillas disturbed region. We collected data on river crossings by both monkey species from 428 hours of surveys along the river and 58 questionnaires completed by knowledgeable local informants. Furthermore, we determined the frequency of river crossing by the two species, location and direction of river-crossing, bank-to-bank river width at the location of reported sighting, and the relationship with deforestation rates and/or human population size in the Marqués de Comillas region. We observed on two separate occasions spider monkeys crossing the river from the disturbed area to the reserve, but howler monkeys were never observed crossing. Interviews suggest, however, that howler monkeys cross the river more frequently than spider monkeys (13 versus 8 reports, respectively). We found that bank-to-bank river width was smaller at river crossing locations in each study site than along the river in general. Furthermore, we found no relationship between river crossings and some human pressures such as deforestation and population size in the region. Whatever the underlying pressures that drive river-crossing events in these two primate species in this region, they appear to be sufficiently strong to stimulate this behavior to occur from time to time.info:eu-repo/semantics/openAccessSociedad de Biología de ChileRevista chilena de historia natural v.83 n.3 20102010-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2010000300010en10.4067/S0716-078X2010000300010
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Alouatta pigra Ateles geoffroyi fragmentation Lacantún River river crossings
spellingShingle	Alouatta pigra Ateles geoffroyi fragmentation Lacantún River river crossings CHAVES,ÓSCAR M STONER,KATHRYN E River crossings by Ateles geoffroyi and Alouatta pigra in southern Mexico: A preliminary report
description	During a nine month field study, we assess the ability of spider (Ateles geoffroyi) and howler (Alouatta pigra) monkeys to cross a large Mesoamerican river, and if this behavior is related to deforestation and/or human population size on the disturbed riverbank. The study was conducted along the Lacantún River, southern Mexico, which .divides the Montes Azules Biosphere Reserve and the Marqués de Comillas disturbed region. We collected data on river crossings by both monkey species from 428 hours of surveys along the river and 58 questionnaires completed by knowledgeable local informants. Furthermore, we determined the frequency of river crossing by the two species, location and direction of river-crossing, bank-to-bank river width at the location of reported sighting, and the relationship with deforestation rates and/or human population size in the Marqués de Comillas region. We observed on two separate occasions spider monkeys crossing the river from the disturbed area to the reserve, but howler monkeys were never observed crossing. Interviews suggest, however, that howler monkeys cross the river more frequently than spider monkeys (13 versus 8 reports, respectively). We found that bank-to-bank river width was smaller at river crossing locations in each study site than along the river in general. Furthermore, we found no relationship between river crossings and some human pressures such as deforestation and population size in the region. Whatever the underlying pressures that drive river-crossing events in these two primate species in this region, they appear to be sufficiently strong to stimulate this behavior to occur from time to time.
author	CHAVES,ÓSCAR M STONER,KATHRYN E
author_facet	CHAVES,ÓSCAR M STONER,KATHRYN E
author_sort	CHAVES,ÓSCAR M
title	River crossings by Ateles geoffroyi and Alouatta pigra in southern Mexico: A preliminary report
title_short	River crossings by Ateles geoffroyi and Alouatta pigra in southern Mexico: A preliminary report
title_full	River crossings by Ateles geoffroyi and Alouatta pigra in southern Mexico: A preliminary report
title_fullStr	River crossings by Ateles geoffroyi and Alouatta pigra in southern Mexico: A preliminary report
title_full_unstemmed	River crossings by Ateles geoffroyi and Alouatta pigra in southern Mexico: A preliminary report
title_sort	river crossings by ateles geoffroyi and alouatta pigra in southern mexico: a preliminary report
publisher	Sociedad de Biología de Chile
publishDate	2010
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2010000300010
work_keys_str_mv	AT chavesoscarm rivercrossingsbyatelesgeoffroyiandalouattapigrainsouthernmexicoapreliminaryreport AT stonerkathryne rivercrossingsbyatelesgeoffroyiandalouattapigrainsouthernmexicoapreliminaryreport
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River crossings by Ateles geoffroyi and Alouatta pigra in southern Mexico: A preliminary report

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