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Abstract:

Much theoretical work has been done regarding patch exploitation in insects and several mechanisms have been proposed to describe and predict behaviours under different situations. However, almost no theoretical framework has been developed for parasitoids with host-seeking larvae, even though similar selection pressures are faced by the female of hymenopteran parasitoids and the larvae of dipteran parasitoids. Here we propose and show that factors such as pre-parasitism competition and host physiological state can modulate host orientation and acceptance behaviours in a dipteran parasitoid larva. When larvae were exposed to pre-parasitism competition and then offered different host odours and live hosts, they oriented towards and more readily accepted suboptimal hosts and were more prone to superparasitize. Our results show that the internal state modulates individual decisions that dipteran parasitoids make, confirming the presence of many previously neglected strategies in parasitoids with host-seeking larvae. Hence, comparative studies should be undertaken to form a complete picture of parasitism strategies. © 2014 The Association for the Study of Animal Behaviour.

Registro:

Documento: Artículo
Título:Exposure to competitors influences parasitism decisions in ectoparasitoid fly larvae
Autor:Crespo, J.E.; Martínez, G.A.; Castelo, M.K.
Filiación:Grupo de Investigación en Ecofisiología de Parasitoides (GIEP), Departamento de Ecología, Genética y Evolución, Instituto IEGEBA (CONICET-UBA), Facultad de Ciencias Exactas y Naturales, Univ. de Buenos Aires, Argentina
Palabras clave:Asilidae; Host location; Host orientation threshold; Mallophora ruficauda; Pre-parasitism competition; competition (ecology); fly; host location; larva; parasitism; parasitoid; patchiness; physiological response; selection; Asilidae; Diptera; Hexapoda; Mallophora ruficauda
Año:2015
Volumen:100
Página de inicio:38
Página de fin:43
DOI: http://dx.doi.org/10.1016/j.anbehav.2014.11.005
Título revista:Animal Behaviour
Título revista abreviado:Anim. Behav.
ISSN:00033472
CODEN:ANBEA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00033472_v100_n_p38_Crespo

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Citas:

---------- APA ----------
Crespo, J.E., Martínez, G.A. & Castelo, M.K. (2015) . Exposure to competitors influences parasitism decisions in ectoparasitoid fly larvae. Animal Behaviour, 100, 38-43.
http://dx.doi.org/10.1016/j.anbehav.2014.11.005
---------- CHICAGO ----------
Crespo, J.E., Martínez, G.A., Castelo, M.K. "Exposure to competitors influences parasitism decisions in ectoparasitoid fly larvae" . Animal Behaviour 100 (2015) : 38-43.
http://dx.doi.org/10.1016/j.anbehav.2014.11.005
---------- MLA ----------
Crespo, J.E., Martínez, G.A., Castelo, M.K. "Exposure to competitors influences parasitism decisions in ectoparasitoid fly larvae" . Animal Behaviour, vol. 100, 2015, pp. 38-43.
http://dx.doi.org/10.1016/j.anbehav.2014.11.005
---------- VANCOUVER ----------
Crespo, J.E., Martínez, G.A., Castelo, M.K. Exposure to competitors influences parasitism decisions in ectoparasitoid fly larvae. Anim. Behav. 2015;100:38-43.
http://dx.doi.org/10.1016/j.anbehav.2014.11.005