Feminization of genetic males by a symbiotic bacterium in a butterfly, Eurema hecabe (Lepidoptera: Pieridae)

被引：102

作者：

Hiroki, M ^{[1
]}

Kato, Y

Kamito, T

Miura, K

机构：

[1] Int Christian Univ, Dept Biol, Mitaka, Tokyo 1818585, Japan

[2] Natl Agr Res Ctr Western Reg, Lab Insect Pest Control, Fukuyama, Hiroshima 7218514, Japan

来源：

NATURWISSENSCHAFTEN | 2002年 / 89卷 / 04期

关键词：

D O I：

10.1007/s00114-002-0303-5

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Wolbachia are symbiotic bacteria found in many arthropods and filarian nematodes. They often manipulate the reproduction of host arthropods. In the present study, female-biased sex-ratio distortion in the butterfly Eurema hecabe was investigated. Breeding experiments showed that this distorted sex ratio is maternally inherited. When treated with tetracycline, adult females of the thelygenic line produced male progeny only. After PCR using Wolbachia-specific primers for the ftsZ gene a positive result was seen in the thelygenic females, but not in male progeny from tetracycline-treated females, or individuals from a Tokyo population with normal sex ratio and reproduction. Cytological observations showed that thelygenic females lack the sex chromatin body (W chromosome). The results strongly suggest that the sex-ratio distortion in E. hecabe is due to feminization of genetic males by Wolbachia.

引用

页码：167 / 170

页数：4

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