Migration of coccinellids to alfalfa fields with varying adjacent vegetation in Central Chile

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dc.contributor.authorGrez, Audrey A.
dc.contributor.authorTorres, Constanza
dc.contributor.authorZaviezo, Tania
dc.contributor.authorLavandero, Blas
dc.contributor.authorRamirez, Marcelo
dc.date.accessioned2025-01-21T00:05:57Z
dc.date.available2025-01-21T00:05:57Z
dc.date.issued2010
dc.description.abstractA. A. Grez, C. Torres, T. Zaviezo, B. Lavandero, and M. Ramirez. Migration of coccinellids to alfalfa fields with varying adjacent vegetation in Central Chile. 2010. Cien. Inv. Agr. 37(2): 111-121. Permanent and permeable edges, where natural enemies can feed, overwinter or easily cross over, should enhance the early arrival of these predators to crops. We evaluated the abundance and species richness of coccinellids migrating to alfalfa fields adjacent to Eucalyptus, a mix of false acacia, blackberries and poplar (F-B-P), vineyards, corn and annual vegetables. From September 2007 to May 2008, we captured coccinellids in three sticky traps (2.64 m(2)) placed at the borders between alfalfa fields and adjacent vegetation. We also estimated the abundance of aphid populations in the alfalfa fields, by counting the number of individuals per alfalfa stem in spring, summer and autumn. We collected 90,396 coccinellids from 14 species. Neither total abundance nor species richness of coccinellids was significantly affected by adjacent vegetation, but Adalia deficiens, Psyllobora picta and Cycloneda sanguinea were more abundant in alfalfa adjacent to Eucalyptus and F-B-P, meanwhile Olla v-nigrum next to annual crops and Hyperaspis sphaeridioides next to vineyards. Edge height and orientation explained 94% of the variance in species abundance. Particularly, P picta and O. v-nigrum were positively and negatively influenced by border height, respectively. Hyperaspis sphaeridioides was negatively affected by northern exposure and none of the species was affected by edge permeability. Aphids were less abundant in alfalfa fields adjacent to F-B-P, especially in spring. These results show that most species of coccinellids were not affected by the composition of crop edges, although tall permanent edges may enhance the arrival of particular coccinellid species to alfalfa fields.
dc.description.funderFONDECYT
dc.fuente.origenWOS
dc.identifier.issn0718-1620
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/95569
dc.identifier.wosidWOS:000281310300011
dc.issue.numero2
dc.language.isoen
dc.pagina.final121
dc.pagina.inicio111
dc.revistaCiencia e investigacion agraria
dc.rightsacceso restringido
dc.subjectagroecosystems
dc.subjectconservation biological control
dc.subjectedge effects
dc.subjectladybeetles
dc.subjectmigration
dc.subjectnatural enemies
dc.subject.ods02 Zero Hunger
dc.subject.ods15 Life on Land
dc.subject.ods13 Climate Action
dc.subject.odspa02 Hambre cero
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.subject.odspa13 Acción por el clima
dc.titleMigration of coccinellids to alfalfa fields with varying adjacent vegetation in Central Chile
dc.typeartículo
dc.volumen37
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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