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פותח על ידי קלירמאש פתרונות בע"מ -
Host choice decisions in the polyembryonic wasp Copidosoma koehleri (Hymenoptera: Encyrtidae)
Year:
2010
Source of publication :
Physiological Entomology
Authors :
הררי, אלי
;
.
Volume :
35
Co-Authors:
Segoli, M., Department of Entomology, University of California, Davis, CA, United States
Keasar, T., Department of Science Education-Biology, University of Haifa, Oranim, Mobile Post Tivon, Israel
Bouskila, A., Department of Entomology, University of California, Davis, CA, United States
Harari, A.R., Department of Entomology, University of California, Davis, CA, United States, Department of Entomology, Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Facilitators :
From page:
40
To page:
45
(
Total pages:
6
)
Abstract:
Female parasitoids often reject hosts of poor quality, where the survival and fitness of their offspring are expected to be low. In polyembryonic parasitoid wasps, a clone of genetically identical embryos develops from one egg in a host. In the wasp Copidosoma koehleri, each female clone produces one soldier larva that attacks competing clones inside the host. Aggression by soldiers is directed usually towards unrelated clones. Accordingly, it may be predicted that females will prefer nonparasitized over parasitized hosts, especially if the latter have been parasitized previously by a mated unrelated female, as a result of the reduced chances of survival for their offspring inside these hosts. In accordance with these predictions, females prefer nonparasitized hosts over self-parasitized hosts when they are presented simultaneously. By contrast to the predictions, females prefer hosts parasitized by an unrelated conspecific over nonparasitized hosts when presented simultaneously. Females do not distinguish hosts parasitized by conspecifics from self-parasitized hosts when presented simultaneously. They reject self-parasitized hosts significantly more often than hosts parasitized by conspecifics when each host type is presented alone. Females faced with two previously parasitized hosts are not affected in their choice by the mating status (i.e. virgin or mated) of the previous parasitizing females. The combined results suggest that females are limited in their ability to assess the risk that their offspring will be attacked by a soldier, or that this risk is balanced by the relative advantages of ovipositing in a host parasitized by conspecifics. A possible advantage may be increased out-breeding opportunities for the emerging offspring. © 2009 The Authors. Journal compilation © 2009 The Royal Entomological Society.
Note:
Related Files :
Copidosoma koehleri
fitness
genetically modified organism
Polyembryonic parasitoid wasps
Soldier larva
Superparasitism.
עוד תגיות
תוכן קשור
More details
DOI :
10.1111/j.1365-3032.2009.00708.x
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
25342
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:14
Scientific Publication
Host choice decisions in the polyembryonic wasp Copidosoma koehleri (Hymenoptera: Encyrtidae)
35
Segoli, M., Department of Entomology, University of California, Davis, CA, United States
Keasar, T., Department of Science Education-Biology, University of Haifa, Oranim, Mobile Post Tivon, Israel
Bouskila, A., Department of Entomology, University of California, Davis, CA, United States
Harari, A.R., Department of Entomology, University of California, Davis, CA, United States, Department of Entomology, Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Host choice decisions in the polyembryonic wasp Copidosoma koehleri (Hymenoptera: Encyrtidae)
Female parasitoids often reject hosts of poor quality, where the survival and fitness of their offspring are expected to be low. In polyembryonic parasitoid wasps, a clone of genetically identical embryos develops from one egg in a host. In the wasp Copidosoma koehleri, each female clone produces one soldier larva that attacks competing clones inside the host. Aggression by soldiers is directed usually towards unrelated clones. Accordingly, it may be predicted that females will prefer nonparasitized over parasitized hosts, especially if the latter have been parasitized previously by a mated unrelated female, as a result of the reduced chances of survival for their offspring inside these hosts. In accordance with these predictions, females prefer nonparasitized hosts over self-parasitized hosts when they are presented simultaneously. By contrast to the predictions, females prefer hosts parasitized by an unrelated conspecific over nonparasitized hosts when presented simultaneously. Females do not distinguish hosts parasitized by conspecifics from self-parasitized hosts when presented simultaneously. They reject self-parasitized hosts significantly more often than hosts parasitized by conspecifics when each host type is presented alone. Females faced with two previously parasitized hosts are not affected in their choice by the mating status (i.e. virgin or mated) of the previous parasitizing females. The combined results suggest that females are limited in their ability to assess the risk that their offspring will be attacked by a soldier, or that this risk is balanced by the relative advantages of ovipositing in a host parasitized by conspecifics. A possible advantage may be increased out-breeding opportunities for the emerging offspring. © 2009 The Authors. Journal compilation © 2009 The Royal Entomological Society.
Scientific Publication
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