Interspecific Hybridization between Cletus punctiger DALLAS and C. rusticus STAL (Heteroptera : Coreidae)

概要

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Hybrid F_1 progenies were produced from matings between Cletus punctiger and C. rusticus in the laboratory. Seventy-eight and three-tenths percent of C. punctiger females which mated with C. rusticus males produced fertile eggs, while 45.0% of C. rusticus females mated with C. punctiger males produced fertile eggs. Several characters of the hybrid F_1 were compared with those of the parent. Considering these characters overall, F_1 hybrids seemed to be intermediate between the parent species. These hybrids were able to copulate and to produce eggs, but they were thought to have no fertility from several selfed and back-crossed tests.Of 253 mating pairs observed in a field cage in whcih 50 males and 50 females of the two species were released, 11.5% were interspecific and most of the intraspecific matings were observed on the preferred host plant of each species. It was suggested that bugs of the two species do not mate at random but that they have some mechanism(s) to recognize conspecific mates.
日本応用動物昆虫学会の論文
1984-05-25