Exposure to competitors influences parasitism decisions in ectoparasitoid fly larvae
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 simil...
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2015
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00033472_v100_n_p38_Crespo http://hdl.handle.net/20.500.12110/paper_00033472_v100_n_p38_Crespo |
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paper:paper_00033472_v100_n_p38_Crespo2023-06-08T14:24:16Z Exposure to competitors influences parasitism decisions in ectoparasitoid fly larvae Crespo, José E. Castelo, Marcela Karina 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 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. Fil:Crespo, J.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Castelo, M.K. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2015 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00033472_v100_n_p38_Crespo http://hdl.handle.net/20.500.12110/paper_00033472_v100_n_p38_Crespo |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
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 |
| spellingShingle |
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 Crespo, José E. Castelo, Marcela Karina Exposure to competitors influences parasitism decisions in ectoparasitoid fly larvae |
| topic_facet |
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 |
| description |
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. |
| author |
Crespo, José E. Castelo, Marcela Karina |
| author_facet |
Crespo, José E. Castelo, Marcela Karina |
| author_sort |
Crespo, José E. |
| title |
Exposure to competitors influences parasitism decisions in ectoparasitoid fly larvae |
| title_short |
Exposure to competitors influences parasitism decisions in ectoparasitoid fly larvae |
| title_full |
Exposure to competitors influences parasitism decisions in ectoparasitoid fly larvae |
| title_fullStr |
Exposure to competitors influences parasitism decisions in ectoparasitoid fly larvae |
| title_full_unstemmed |
Exposure to competitors influences parasitism decisions in ectoparasitoid fly larvae |
| title_sort |
exposure to competitors influences parasitism decisions in ectoparasitoid fly larvae |
| publishDate |
2015 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00033472_v100_n_p38_Crespo http://hdl.handle.net/20.500.12110/paper_00033472_v100_n_p38_Crespo |
| work_keys_str_mv |
AT crespojosee exposuretocompetitorsinfluencesparasitismdecisionsinectoparasitoidflylarvae AT castelomarcelakarina exposuretocompetitorsinfluencesparasitismdecisionsinectoparasitoidflylarvae |
| _version_ |
1768546047095734272 |