Wolbachia infection and an all-female trait in Ostrinia orientalis and Ostrinia zaguliaevi

Sex ratio distortion toward females (SR trait), induced by a Wolbachia bacterium, has been reported in two species of the Ostrinia furnacalis group, viz., O. furnacalis, and O. scapulalis (Lepidoptera: Crambidae). In addition, an SR trait caused by abacterial, unidentified agent(s) is known in O. sc...

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Bibliographic Details
Published in:Entomologia experimentalis et applicata 2004-04, Vol.111 (1), p.79-83
Main Authors: Kageyama, D, Nishimura, G, Ohno, S, Takanashi, T, Hoshizaki, S, Ishikawa, Y
Format: Article
Language:English
Subjects:
Animal and plant ecology
Animal, plant and microbial ecology
Animals
bacterial endosymbionts
Biological and medical sciences
Crambidae
Demecology
endosymbionts
female-biased sex ratio
females
Fundamental and applied biological sciences. Psychology
genes
infection
Lepidoptera
nucleotide sequences
Ostrinia
Ostrinia furnacalis
Ostrinia nubilalis
Ostrinia orientalis
Ostrinia zaguliaevi
Ostrinia zealis
Protozoa. Invertebrata
reproductive traits
sex ratio
sex ratio distortion trait
strain differences
Wolbachia
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Summary:Sex ratio distortion toward females (SR trait), induced by a Wolbachia bacterium, has been reported in two species of the Ostrinia furnacalis group, viz., O. furnacalis, and O. scapulalis (Lepidoptera: Crambidae). In addition, an SR trait caused by abacterial, unidentified agent(s) is known in O. scapulalis. Here we examined the SR trait in four other species of the furnacalis group, viz., O. orientalis, O. zaguliaevi, and O. zealis from Japan, and O. nubilalis from central and eastern Europe. Wolbachia infection was detected in three O. orientalis females and in one O. zaguliaevi female, and the infection was always associated with the SR trait. In terms of wsp and ftsZ gene sequences, Wolbachia strains in O. orientalis and O. zaguliaevi were indistinguishable from each other, or from those in O. furnacalis and O. scapulalis. These findings suggest that Wolbachia strains in the four Ostrinia species are probably identical. In addition, one O. zealis female, which was negative in diagnostic PCRs for Wolbachia and general bacteria, produced an all-female brood. This trait was very similar to the SR trait caused by abacterial agent(s) in O. scapulalis.
ISSN:0013-8703
1570-7458
1570-8703
DOI:10.1111/j.0013-8703.2004.00153.x