Frequent occurrence of gynandromorphs in the natural population of the antVollenhovia emeryi (Hymenoptera: Formicidae) |
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Authors: | K Kinomura K Yamauchi |
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Institution: | (1) Gifu-Aikawa High School, 501-31 Gifu, Japan;(2) Department of Biology, Faculty of Education, Gifu University, 501-11 Gifu, Japan |
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Abstract: | Summary Many gynandromorphs were obtained from the natural population ofVollenhovia emeryi (microgyna form) in Gifu, Japan. They were primarily male: most had the thorax and gaster of males, and the head contained tissues partially feminized to varying degrees. These gynandromorphs were found in 27 of 45 colonies studied (60.0%). Their proportion to total males in each colony varied from 3.7–47.7%, with a mean of 21.4% (n = 21). The gynandromorphs were found in all study areas and in every study year, suggesting that gynandromorphism in this species is not a rare phenomenon. Moreover, this observation suggests that gynandromorphs may occur more frequently in micraners than in macraners. |
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Keywords: | Vollenhovia emeryi gynandromorph dimorphism microgyna polygyny |
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