Evidence for insect seed predator dynamics mediated by vertebrate frugivores

Vertebrate frugivores have been suggested to reduce seed predation, indirectly controlling populations of insect seed predators (ISP) by means of consuming many individuals when feeding on fruits. The possibility has not been explored, however, that this 'frugivore predation' may different...

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Autores principales:	PEGUERO,GUILLE, ESPELTA,JOSEP M
Lenguaje:	English
Publicado:	Sociedad de Biología de Chile 2013
Materias:	frugivory seed predation trophic interactions tropical dry forests
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2013000200005
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spelling	oai:scielo:S0716-078X20130002000052013-08-08Evidence for insect seed predator dynamics mediated by vertebrate frugivoresPEGUERO,GUILLEESPELTA,JOSEP M frugivory seed predation trophic interactions tropical dry forests Vertebrate frugivores have been suggested to reduce seed predation, indirectly controlling populations of insect seed predators (ISP) by means of consuming many individuals when feeding on fruits. The possibility has not been explored, however, that this 'frugivore predation' may differentially affect ISP according to species-specific differences in larval development time within the fruit. In the dry tropical forest trees Acacia pennatula and Guazuma ulmifolia we compared seed predation and the absolute and relative abundances of bruchid beetle species (Bruchinae) in two sites, one with large frugivores (cattle) and the other cattle-free for a considerable time. In the site with cattle we found a notable overall reduction in the proportion of seeds predated (ca. 15 %) with respect to cattle-free site, and changes in the ISP community as well, in particular a reduced absolute and relative abundance of the bruchid species with the longest larval development time. Our results suggest that the interplay between evolutionary processes (resulting in variation in insect life-histories) and complex ecological interactions (inadvertent consumption by larger animals) may contribute to the coexistence of different insect species feeding upon the same host plant.info:eu-repo/semantics/openAccessSociedad de Biología de ChileRevista chilena de historia natural v.86 n.2 20132013-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2013000200005en10.4067/S0716-078X2013000200005
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	frugivory seed predation trophic interactions tropical dry forests
spellingShingle	frugivory seed predation trophic interactions tropical dry forests PEGUERO,GUILLE ESPELTA,JOSEP M Evidence for insect seed predator dynamics mediated by vertebrate frugivores
description	Vertebrate frugivores have been suggested to reduce seed predation, indirectly controlling populations of insect seed predators (ISP) by means of consuming many individuals when feeding on fruits. The possibility has not been explored, however, that this 'frugivore predation' may differentially affect ISP according to species-specific differences in larval development time within the fruit. In the dry tropical forest trees Acacia pennatula and Guazuma ulmifolia we compared seed predation and the absolute and relative abundances of bruchid beetle species (Bruchinae) in two sites, one with large frugivores (cattle) and the other cattle-free for a considerable time. In the site with cattle we found a notable overall reduction in the proportion of seeds predated (ca. 15 %) with respect to cattle-free site, and changes in the ISP community as well, in particular a reduced absolute and relative abundance of the bruchid species with the longest larval development time. Our results suggest that the interplay between evolutionary processes (resulting in variation in insect life-histories) and complex ecological interactions (inadvertent consumption by larger animals) may contribute to the coexistence of different insect species feeding upon the same host plant.
author	PEGUERO,GUILLE ESPELTA,JOSEP M
author_facet	PEGUERO,GUILLE ESPELTA,JOSEP M
author_sort	PEGUERO,GUILLE
title	Evidence for insect seed predator dynamics mediated by vertebrate frugivores
title_short	Evidence for insect seed predator dynamics mediated by vertebrate frugivores
title_full	Evidence for insect seed predator dynamics mediated by vertebrate frugivores
title_fullStr	Evidence for insect seed predator dynamics mediated by vertebrate frugivores
title_full_unstemmed	Evidence for insect seed predator dynamics mediated by vertebrate frugivores
title_sort	evidence for insect seed predator dynamics mediated by vertebrate frugivores
publisher	Sociedad de Biología de Chile
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2013000200005
work_keys_str_mv	AT pegueroguille evidenceforinsectseedpredatordynamicsmediatedbyvertebratefrugivores AT espeltajosepm evidenceforinsectseedpredatordynamicsmediatedbyvertebratefrugivores
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Evidence for insect seed predator dynamics mediated by vertebrate frugivores

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