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  • Electronic Resource  (2)
  • Vollenhovia emeryi  (1)
  • mating strategy  (1)
  • 1
    ISSN: 1420-9098
    Keywords: Vollenhovia emeryi ; gynandromorph ; dimorphism ; microgyna ; polygyny
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: 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.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1420-9098
    Keywords: Hypoponera bondroiti ; ergatoid male ; intercaste ; dimorphism ; mating strategy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary We studied the reproductive behavior of the ponerine antHypoponera bondroiti from Okinawa, Japan. This species has dimorphic wingless ergatoid males (major and minor), dimorphic reproductive females (alate queens and wingless reproductive intercastes), and workers. Workers have neither ovarioles nor spermatheca. Major ergatoid males are the largest colony members. Two major males fought one another in the nest until one disappeared, leaving the other to occupy the nest chambers where queens emerge and mate. Minor ergatoid males also fought one another, although they seemed to be less pugnacious, resulting in occasional cohabitation of multiple minor males in the same nest chamber. Major males never attacked minor ones, allowing them to coexist in the same nest chamber. Minor males seemed to mimic females. Both major and minor males mated with both alate queens and intercastes within the nest. After mating, some alate queens shed their wings and remained in the nest, while the others left the nest for dispersal in the laboratory. Intercastes remained in the nest.
    Type of Medium: Electronic Resource
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