Reproductive activity and survival of Culex pipiens pallens and Culex quinquefasciatus (Diptera: Culicidae) in Japan at high temperature.
The egg hatchability, insemination, and longevity of Japanese Culex pipiens pallens Coquillett and Japanese Culex quinquefasciatus Say were compared at 25 and 30 degrees C. Egg hatchability was high in Cx. p. pallens at 25 degrees C, but it was very low at 30 degrees 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 degrees 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.
Oda
Tsutomu
T
Department of General Education the School of Allied Medical Sciences Nagasaki University Japan. odat@net.nagasaki-u.ac.jp
Eshita
Yuki
Y
Uchida
Keikichi
K
Mine
Mariko
M
Kurokawa
Kenji
K
Ogawa
Yasunori
Y
Kato
Katsumotso
K
Tahara
Hiroyuki
H
D000818:Animals; D003465:Culex / Q000254:growth & development / Q000502:physiology*; D005260:Female; D007314:Insemination; D007564:Japan; D008297:Male; D010058:Oviposition / Q000502:physiology; D010063:Ovum / Q000502:physiology; D012098:Reproduction; D013696:Temperature