Host Selection in Two Coexisting Parasitoids of Drosophila, Asobara Tabida Nees Von Esenbeck and Leptopilina Heterotoma (Thomson)

1984 ◽  
Vol 35 (4) ◽  
pp. 693-706 ◽  
Author(s):  
Cees D. Hofker ◽  
Willy T.F.H. VAN STRIEN-VAN LIEMPT
Keyword(s):  
Host Selection ◽  
Leptopilina Heterotoma ◽  
Asobara Tabida

Olfactory Microhabitat Selection in Leptopilina Heterotoma (Thomson) (Hym.: Eucoilidae), a Parasitoid of Drosophilidae

1984 ◽  
Vol 35 (3) ◽  
pp. 497-504 ◽  
Author(s):  
Louise E.M. Vet ◽  
Karin Van Opzeeland
Keyword(s):  
Foraging Efficiency ◽  
Microhabitat Selection ◽  
Behavioural Flexibility ◽  
Ecological Significance ◽  
Parasitoid Species ◽  
Temporal Separation ◽  
Leptopilina Heterotoma ◽  
Asobara Tabida ◽  
Drosophila Larvae ◽  
Larval Conditioning

Leptopilina heterotoma (Thomson) and Asobara tabida (Nees), solitary endoparasitoids of frugivorous Drosophila larvae, are assumed to be competitors. Olfactometer experiments showed, however, that the species differ in their preference for microhabitat odours. Whereas A. tabida prefers a fresh fermenting sugar/yeast medium, L. heterotoma prefers this medium in a later stage of decay. These results are confirmed by field observations. This temporal separation between the species, which is not complete because some multiparasitism does occur, may be one of the factors to their coexistence. Odour preference in L. heterotoma is not modified by larval conditioning, but conditioning of the adults significantly influenced their odour response. The ecological significance of such learning is discussed. It is argued that even though such behavioural flexibility may enhance foraging efficiency when resources are unpredictable, it may also influence the amount of competition between the two parasitoid species.

scholarly journals Biochemical characterization and comparison of aspartylglucosaminidases secreted in venom of the parasitoid wasps Asobara tabida and Leptopilina heterotoma

PLoS ONE ◽  
2017 ◽  
Vol 12 (7) ◽  
pp. e0181940 ◽  
Author(s):  
Quentin Coulette ◽  
Séverine Lemauf ◽  
Dominique Colinet ◽  
Geneviève Prévost ◽  
Caroline Anselme ◽  
...  
Keyword(s):  
Biochemical Characterization ◽  
Parasitoid Wasps ◽  
Leptopilina Heterotoma ◽  
Asobara Tabida

scholarly journals Interactions between Coexisting Intracellular Genomes: Mitochondrial Density and Wolbachia Infection

2009 ◽  
Vol 75 (7) ◽  
pp. 1916-1921 ◽  
Author(s):  
L. Mouton ◽  
H. Henri ◽  
F. Fleury
Keyword(s):  
Mitochondrial Dna ◽  
Selective Sweep ◽  
Wolbachia Infection ◽  
Host Cells ◽  
Unanswered Question ◽  
Mitochondrial Density ◽  
Leptopilina Heterotoma ◽  
Asobara Tabida ◽  
Evolutionary Aspects

ABSTRACT Many arthropods are infected with maternally transmitted microorganisms, leading to the coexistence of several intracellular genomes within the host cells, including their own mitochondria. As these genomes are cotransmitted, their patterns of evolution have been intimately linked, with possible consequences for the diversity and evolution of the host mitochondrial DNA. The evolutionary aspects of the situation have been thoroughly investigated, especially the selective sweep on the mitochondria as a result of Wolbachia invasion, whereas direct interactions between mitochondria and intracellular symbionts within the host cells or body have received little attention. Since endosymbionts exploit host resources but mitochondria supply energy to meet the bioenergetic demands of organisms, an unanswered question concerns the correlation between their densities. Here, we investigated the influence of Wolbachia symbiosis on mitochondrial density in two parasitic wasps of Drosophila species, both of which are naturally infected by three Wolbachia strains, but they differ in their degree of dependency on these bacteria. In Leptopilina heterotoma, all Wolbachia strains are facultative, whereas Asobara tabida requires a strain of Wolbachia for oogenesis to occur. In both species, Wolbachia infections are stable and well regulated, since the density of each strain does not depend on the presence or absence of other strains. Using lines that harbor various Wolbachia infection statuses, we found that mitochondrial density was not affected by the infection regardless of the sex and age of the host, which is strongly reminiscent of the independent regulation of specific Wolbachia strains and suggest that the protagonists coexist independently of each other as the result of a long-term coevolutionary interaction.

Sign in / Sign up

Export Citation Format

Share Document