The joint effect of temperature and host species induce complex genotype-by-environment interactions in the larval parasitoid of Drosophila, Leptopilina heterotoma (Hymenoptera: Figitidae)

Phenotypic plasticity and genotype-by-environment interactions are usually studied by testing environmental factors separately. However, several environmental factors may vary simultaneously across the geographic range of a species, and thus interact to drive phenotypic and genotypic evolution. Here...

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Bibliographic Details
Published in:Oikos 2004-09, Vol.106 (3), p.451-456
Main Authors: Ris, Nicolas, Allemand, Roland, Fouillet, Pierre, Fleury, Frédéric
Format: Article
Language:English
Subjects:
Animal and plant ecology
Animal, plant and microbial ecology
Animals
Autoecology
Biological and medical sciences
Drosophila
Evolution
Fecundity
Figitidae
Foodborne illnesses
Fundamental and applied biological sciences. Psychology
Host parasite relationships
Hymenoptera
Insect larvae
Larval development
Leptopilina heterotoma
Life Sciences
Other
Parasite hosts
Parasitism
Parasitoids
Protozoa. Invertebrata
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Summary:Phenotypic plasticity and genotype-by-environment interactions are usually studied by testing environmental factors separately. However, several environmental factors may vary simultaneously across the geographic range of a species, and thus interact to drive phenotypic and genotypic evolution. Here, we address the question of the interaction between two environmental factors in the case of a koinobiont parasitoid of Drosophila, Leptopilina heterotoma (Hymenoptera: Figitidae). Using two allopatric parasitoid lines, we analysed the joint effect of developmental temperature and host species on two major fitness components (pre-imaginal survival and fecundity) of emerged parasitoids. Our results indicate that both environmental factors strongly interact to shape the parasitoid phenotype. Moreover, complex genotype-by-environment interactions appeared that can even invert the relative fitness of the two parasitoid lines.
ISSN:0030-1299
1600-0706
DOI:10.1111/j.0030-1299.2004.13274.x