Artículo
Changes in Diachasmimorpha longicaudata (Hymenoptera: Braconidae) Functional Response as a Consequence of Host Density Choice
Núñez Campero, Segundo Ricardo
; Benitez-Vieyra, Santiago Miguel
; Gorla, David Eladio
; Ovruski Alderete, Sergio Marcelo
Fecha de publicación:
07/2016
Editorial:
Entomological Society of America
Revista:
Annals of the Entomologycal Society of America
ISSN:
0013-8746
e-ISSN:
1938-2901
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Most predator and parasitoid functional response studies have been carried out by using experimental designs where insects are confined to an arena and subsequently exposed to different host densities, which are evaluated individually. In the case of a parasitoid that looks for profitable patches, this design forces it to use the single host density patch available, and therefore the possibility of selection by the parasitoid is not considered at all. A selective functional response, in which the host is distributed in discrete patches at different densities,could be a solution to avoid such a limitation. However, the disadvantage of this design is that it does not meet the independence assumption required to perform a parametric statistical analysis. Nevertheless, the use of nonparametric analyses such as GAM and GAMM models allows the performance of this kind of design, making the relationship between the response and the explanatory variable more flexible, looking for general behavioral patterns. The behavior of the fruit fly parasitoid Diachasmimorpha longicaudata (Ashmead) in a patched condition was assessed in order to demonstrate that nonparametric analyses are useful tools when studying the selective functional response. Results showed that the functional response changed from a "sigmoid curve" to a "bell-shape curve" when the parasitoid had the chance to choose freely among different host densities. The female parasitoid distributed their ovarian load among the eight host densities. The present study suggests that the bell-shape curve displays a general behavior pattern of the parasitoid population.
Palabras clave:
Diachasmimorpha
,
Population Ecology
,
Functional Response
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Colecciones
Articulos(CRILAR)
Articulos de CENTRO REGIONAL DE INV. CIENTIFICAS Y TRANSFERENCIA TECNOLOGICA DE ANILLACO
Articulos de CENTRO REGIONAL DE INV. CIENTIFICAS Y TRANSFERENCIA TECNOLOGICA DE ANILLACO
Articulos(IMBIV)
Articulos de INST.MULTIDISCIPL.DE BIOLOGIA VEGETAL (P)
Articulos de INST.MULTIDISCIPL.DE BIOLOGIA VEGETAL (P)
Citación
Núñez Campero, Segundo Ricardo; Benitez-Vieyra, Santiago Miguel; Gorla, David Eladio; Ovruski Alderete, Sergio Marcelo; Changes in Diachasmimorpha longicaudata (Hymenoptera: Braconidae) Functional Response as a Consequence of Host Density Choice; Entomological Society of America; Annals of the Entomologycal Society of America; 109; 5; 7-2016; 730-736
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