scholarly journals Adaptive Superparasitism and Patch Time Allocation in Solitary Parasitoids: Searching in Groups vs Sequential Patch Visits

1992 ◽  
Vol 6 (5) ◽  
pp. 528 ◽  
Author(s):  
J. J. M. Van Alphen ◽  
M. E. Visser ◽  
H. W. Nell
Keyword(s):  
Time Allocation ◽  
Patch Time Allocation

Sublethal effects of organophosphorus insecticide phoxim on patch time allocation and oviposition behavior in a parasitoid wasp Meteorus pulchricornis

2021 ◽  
pp. 1-10
Author(s):  
Sheng Sheng ◽  
Yan Song ◽  
Sheraz Ahmad ◽  
Jiao Wang ◽  
Ying Shao ◽  
...  
Keyword(s):  
Time Allocation ◽  
Sublethal Effects ◽  
Insect Pests ◽  
Oviposition Behavior ◽  
Host Density ◽  
Parasitoid Wasp ◽  
Patch Time Allocation ◽  
Meteorus Pulchricornis ◽  
Allocation Decisions ◽  
Patch Residence Time

Abstract Parasitoid wasps are key agents for controlling insect pests in integrated pest management programs. Although many studies have revealed that the behavior of parasitic wasps can be influenced by insecticides, the strategies of patch time allocation and oviposition have received less attention. In the present study, we forced the endoparasitoid Meteorus pulchricornis to phoxim exposure at the LC30 and tested the foraging behavior within patches with different densities of the host, the larvae of the tobacco cutworm Spodoptera litura. The results showed that phoxim treatment can significantly increase the patch-leaving tendency of female wasps, while host density had no impact. The number of oviposition and the number of previous patch visits also significantly influenced the patch time allocation decisions. The occurrence of oviposition behavior was negatively affected by phoxim exposure; however, progeny production was similar among patches with different host densities. Phoxim exposure shaped the offspring fitness correlates, including longer durations from cocoon to adult wasps, smaller body size, and shorter longevity. The findings of the present study highlight the sublethal effects that reduce the patch residence time and the fitness of parasitoid offspring, suggesting that the application of phoxim in association with M. pulchricornis should be carefully schemed in agroecosystems.

scholarly journals Genetic variation in patch time allocation in a parasitic wasp

1999 ◽  
Vol 68 (1) ◽  
pp. 121-133 ◽  
Author(s):  
Eric Wajnberg ◽  
Marzia Cristiana Rosi ◽  
Stefano Colazza
Keyword(s):  
Genetic Variation ◽  
Time Allocation ◽  
Parasitic Wasp ◽  
Patch Time Allocation

Patch time allocation in male parasitoids

2008 ◽  
Vol 33 (5) ◽  
pp. 608-613 ◽  
Author(s):  
VÉRONIQUE MARTEL ◽  
ERIC WAJNBERG ◽  
GUY BOIVIN
Keyword(s):  
Time Allocation ◽  
Patch Time Allocation

Oviposition behaviour and patch-time allocation in two aphid parasitoids exposed to deltamethrin residues

2004 ◽  
Vol 112 (3) ◽  
pp. 227-235 ◽  
Author(s):  
Nicolas Desneux ◽  
Eric Wajnberg ◽  
Xavier Fauvergue ◽  
Sophie Privet ◽  
Laure Kaiser
Keyword(s):  
Time Allocation ◽  
Oviposition Behaviour ◽  
Patch Time Allocation ◽  
Aphid Parasitoids

Adaptive Superparasitism and Patch Time Allocation in Solitary Parasitoids: the Influence of the Number of Parasitoids Depleting a Patch

Behaviour ◽  
1990 ◽  
Vol 114 (1-4) ◽  
pp. 21-36 ◽  
Author(s):  
Marcel E. Visser ◽  
Jacques J.M. VAN ALPHEN ◽  
Henk W. Nell
Keyword(s):  
Time Allocation ◽  
Quantitative Agreement ◽  
Mutual Interference ◽  
Patch Quality ◽  
Patch Area ◽  
Patch Time Allocation ◽  
Leptopilina Heterotoma ◽  
Larval Parasitoid ◽  
Ess Model

AbstractAn ESS model that predicts more superparasitism and longer patch times with an increasing number of searching parasitoids in a patch, was tested in experiments with Leptopilina heterotoma, a solitary larval parasitoid of Drosophila. The observed egg distributions and patch times were in quantitative agreement with the predictions of the model; oviposition and patch time decisions are clearly influenced by the number of conspecifics in the patch. Both in the model and in the experiment patch quality was kept constant (the number of hosts and the patch area per parasitoid were kept constant). The model predicted and the experiments showed that parasitoids gain less offspring per unit of time when searching a patch together: superparasitism leads to mutual interference. No self-superparasitism should have occurred when parasitoids searched alone. This prediction was only met with females that had been kept in isolation in the days before the experiment; when stored in groups of four, self-superparasitism did occur. This indicates an ability of the parasitoids to assess the probability of future superparasitism by conspecifics.

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