The egg hatchability, insemination, and longevity of Japanese Culex pipiens pallens Coquillett and Japanese Culex quinquefasciatus Say were compared at 25 and 30°C. Egg hatchability was high in Cx. p. pallens at 25°C, but it was very low at 30°C because almost no females were inseminated at this temperature. In Cx. quinquefasciatus, the egg hatchability and insemination rates were very high, even at 30°C. The longevity of adult females and males was generally shorter in Cx. p. pallens than in Cx. quinquefasciatus at both temperatures. Because high temperatures may restrict the spread of Cx. p. pallens, we suggest that even if this species spreads to Okinawa, the possibility of it becoming established is very low.
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1 January 2002
Reproductive Activity and Survival of Culex pipiens pallens and Culex quinquefasciatus (Diptera: Culicidae) in Japan at High Temperature
Tsutomu Oda,
Yuki Eshita,
Keikichi Uchida,
Mariko Mine,
Kenji Kurokawa,
Yasunori Ogawa,
Katsumoto Kato,
Hiroyuki Tahara
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Journal of Medical Entomology
Vol. 39 • No. 1
January 2002
Vol. 39 • No. 1
January 2002
Culex pipiens pallens
Culex quinquefasciatus
high temperature
reproduction
survival