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Abstract:

We explored the effects of the presence of conspecifics on host patch choice decisions made by the parasitoid Venturia canescens. Different odor sources were located in plastic boxes at the end of each arm of a glass Y-tube olfactometer. In a set of experiments, odor sources were either (a) host kairomone patches with or without conspecifics (5 or 20) or (b) two odor sources located in successive boxes (a host kairomone patch and a patch with 20 conspecifics in one arm versus a host patch and an empty patch in the other). Our results indicate that V. canescens avoids competition only at high conspecific densities. Avoidance occurs only when foraging wasps perceive the combined odors from host kairomones and conspecific females. Separating the host patch from conspecific parasitoids does not perturb avoidance behavior.

Registro:

Documento: Artículo
Título:Conspecific avoidance during foraging in Venturia canescens (Hymenoptera: Ichneumonidae): The roles of host presence and conspecific densities
Autor:Castelo, M.K.; Corley, J.C.; Desouhant, E.
Filiación:Lab. de Fisiol. de Insectos, Dpto. de Ciencias Biológicas, Ciudad Universitaria, Pabellón II, (1428) Ciudad de Buenos Aires, Argentina
Lab. de Ecología de Insectos, INTA Bariloche, CC 277, (8400) Bariloche, Argentina
Biométrie/Biol. Évol., UMR-CNRS 5558, Univ. Claude Bernard, Lyon 1, 43 Bd. du 11 Novembre 1918, F-69622 Villeurbanne Cedex, France
Palabras clave:Host-parasitoid interactions; Intraspecific competition; Olfactory foraging behavior; Hymenoptera; Ichneumonidae; Venturia canescens; Venturia canescens; Vespidae
Año:2003
Volumen:16
Número:2
Página de inicio:307
Página de fin:318
DOI: http://dx.doi.org/10.1023/A:1023928204793
Título revista:Journal of Insect Behavior
Título revista abreviado:J. Insect Behav.
ISSN:08927553
CODEN:JIBEE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08927553_v16_n2_p307_Castelo

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Citas:

---------- APA ----------
Castelo, M.K., Corley, J.C. & Desouhant, E. (2003) . Conspecific avoidance during foraging in Venturia canescens (Hymenoptera: Ichneumonidae): The roles of host presence and conspecific densities. Journal of Insect Behavior, 16(2), 307-318.
http://dx.doi.org/10.1023/A:1023928204793
---------- CHICAGO ----------
Castelo, M.K., Corley, J.C., Desouhant, E. "Conspecific avoidance during foraging in Venturia canescens (Hymenoptera: Ichneumonidae): The roles of host presence and conspecific densities" . Journal of Insect Behavior 16, no. 2 (2003) : 307-318.
http://dx.doi.org/10.1023/A:1023928204793
---------- MLA ----------
Castelo, M.K., Corley, J.C., Desouhant, E. "Conspecific avoidance during foraging in Venturia canescens (Hymenoptera: Ichneumonidae): The roles of host presence and conspecific densities" . Journal of Insect Behavior, vol. 16, no. 2, 2003, pp. 307-318.
http://dx.doi.org/10.1023/A:1023928204793
---------- VANCOUVER ----------
Castelo, M.K., Corley, J.C., Desouhant, E. Conspecific avoidance during foraging in Venturia canescens (Hymenoptera: Ichneumonidae): The roles of host presence and conspecific densities. J. Insect Behav. 2003;16(2):307-318.
http://dx.doi.org/10.1023/A:1023928204793