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The effects of wild cruciferous host plants on morphology, reproductive performance and flight activity in the diamondback moth, Plutella xylostella (Lepidoptera: Yponomeutidae)
Author(s) -
Begum Shefali,
Tsukuda Ritsuko,
Fujisaki Kenji,
Nakasuji Fusao
Publication year - 1996
Publication title -
population ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 59
eISSN - 1438-390X
pISSN - 1438-3896
DOI - 10.1007/bf02515735
Subject(s) - plutella , diamondback moth , biology , fecundity , lepidoptera genitalia , host (biology) , horticulture , cruciferous vegetables , botany , pupa , zoology , larva , ecology , population , demography , genetics , cancer , sociology
The wild crucifers, Rorippa indica and Lepidium virginicum , are known to serve as host plants for the diamondback moth (DBM), Plutella xylostella , but they are less suitable than the preferred cultivated cruciferous plant, cabbage, in terms of adult body size and fecundity. The life history traits and flight activity of DBM adults grown on various host plants were investigated. The adults thus reared on each host plant were divided into three size groups (small, medium and large). In general, female adults grown on the wild crucifers were less fecund and lived longer than those reared on cabbage. Flight activity was higher in adults grown on wild crucifers than in those reared on cabbage. Male adults flew longer than females. Fecundity, longevity, flight activity and morphometrical characters of adults were positively correlated with pupal weight in individuals reared on the same host plant. A negative relationship was found between fecundity and flight activity in females of the same size group, but a positive one was observed in females reared on the same host plant.