Inter-population Variation of Life History Characteristics and Its Significance on Survival Process of an Herbivorous Lady Beetle, Henosepilachna niponica (LEWIS)(Coleoptera, Coccinellidae)

概要

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Population studies on a thistle-feeding lady beetle, Henosepilachna niponica were conducted for 1976-1980 by using mark-release-recapture method in two different habitats locating at an upstream site and a downstream site of the River Ado in the northwestern part of Shiga Prefecture. Some life history parameters such as adult longevity in reproductive season, timing of adult emergence, and length of pre-hibernating period of new adults were compared between the two local populations. The seasonal occurrences of eggs and larvae of upstream population were more delayed compared to those of downstream population. Reproductive adults at upstream site had a longer longevity compared with those at downstream site. In contrast, new adults exhibited a significantly shorter duration of prehibernating period at upstream than at downstream site. The duration from adult emergence to hibernation was more likely to be a main factor in determining the overall adult survival during this period.
日本昆虫学会の論文
1984-09-25