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Reproduction and egg diapause of the oriental chinch bug, Cavelerius saccharivorus okajima (Heteroptera: Lygaeidae), in the subtropical winter season in relation to its wing polymorphism
Author(s) -
Fujisaki Kenji
Publication year - 1993
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/bf02513590
Subject(s) - diapause , biology , heteroptera , lygaeidae , fecundity , reproduction , wing , pentatomidae , subtropics , grasshopper , zoology , dormancy , ecology , botany , larva , demography , population , sociology , engineering , aerospace engineering , germination
Summary Reproduction and egg diapause of the oriental chinch bug, Cavelerius saccharivorus , in the subtropical winter season were investigated in relation to its wing polymorphism. Macropterous females collected from the southern part of Okinawa Is. in the autumn season delayed their oviposition and were less fecund early in the adult life period, but survived much longer than brachypterous females collected from the same locality. The total fecundity was not significantly different between wing morphs. The diapause of eggs laid by brachypters tended to be terminated more easily at a high temperature than that of eggs laid by macropters. This indicated that the eggs laid by macropters were more intense in their diapause than those laid by brachypters. However, irrespective of the parental wing form, diapause showed considerable variation in its intensity within and between clutches.