Genetic studies of the polymorphism in insects were rapidly carried out throughout the whole world. Such that, Harmonia axyridis is the most sufficient materials for examining the cause of polymorphism. As a result of collecting ladybird populations in aggregation sites during 3 months regularly, their color and number of spots variations on elytra and pronotum were very great. Over 55 phenotype were discovered within one species, and breeding experiments were done to F5 generations. Therefore, there were three main forms such as YBM19 (19 black spots on yellow elytra, M-shaped marking on the pronotum), BRA02 (2 red spots on black elytra, no M-shaped marking on the pronotum), and BRA04 (4 red spots on black elytra, no M-shaped marking on the pronotum) in the collected ladybird population. In the field population, appearance frequency of these patterns were from 48.62 to 70.04%, YBM19 pattern of elytra was dominant, among them. To go ahead, at the molecular level, genetic diversity will be investigated.
Species 1: Coleoptera Coccinellidae Harmonia axyridis (asian lady beetle, multicolored Asian lady beetle)
Keywords: elytra color pattern
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