Difference of sex pheromone content among strains in female moth of the silkworm, Bombyx mori
1998
Shirota, T. (Institute of Silkworm Genetics and Breeding, Ami, Ibaraki (Japan)) | Wakamura, S. | Yasuda, T. | Kunitomo, Y.
The content of sex pheromone, Bombykol, in the silkworm female moths and its periodic change were compared among 3 strains having different pheromone response in the male moth. The pheromone content of the female moth showed the periodic change; the pheromone increased in photophase period and decreased in the scotophase. The pheromone content of the female moth reached the maximal level between 33 and 36 hours after eclosion. Subsequently, the pheromone content of the female moths was studied comparatively at 33 hours after eclosion by using 7 silkworm strains. The remarkable difference of the pheromone content was found among the strains, and the content of the strongest strain was over 4 times higher than that of the weakest. However, significant correlation could not be detected between the pheromone content of the female moth and the pheromone response of the male moth. These results suggest that these phenomena were regulated individually by some different genes
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