Effects of feeding on reproduction and overwintering in female adults of Ooencyrtus nezarae Ishii(Hymenoptera:Encytidae)

概要

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Effects of feeding on longevity, reproduction and overwintering were examined in female adults of the wasp, Ooencyrtus nezarae, an egg parasitoid of phytophagous heteropterans. There were no significant differences in longevity among females fed on honey, glucose, galactose or sucrose, although fecundity was significantly higher in females fed on honey than those fed on these sugars. Lactose was less nutritious with respect to both longevity and fecundity. Most females fed on extrafloral nectar of Vicia angustifolia and some of them laid eggs after feeding on it only once. Most or all females fed on honeydew of the aphid, Aphis craccivora, and flower nectar of Erigeron annuus, and some females laid eggs when one of these foods was continuiously supplied. Some females began to feed on flower nectar of Solidago altissima within 15 min after the flowers were supplied. When this food was continuously supplied, all females laid eggs and their fecundity was not significantly different from that of females feeding on honey. Therefore, these 4 foods may be natural foods of O. nezarae. However, when kept from autumn under natural photoperiod and temperature with aphid honeydew or flowers of E. annuus or S. altissima, no females survived the winter.
日本応用動物昆虫学会の論文
2000-08-25