Drought and overwintering success of Tripteroides bambusa (Diptera : Culicidae) larvae and eggs in a bamboo grove
1997; Japan Society of Medical Entomology and Zoology; Volume: 48; Issue: 4 Linguagem: Inglês
10.7601/mez.48.295
ISSN2185-5609
AutoresToshihiko Sunahara, Motoyoshi Mogi,
Tópico(s)Viral Infections and Vectors
ResumoWe studied the effects of winter drought on the overwintering success of larvae and eggs of Tripteroides bambusa in a bamboo grove in northern Kyushu, southwestern Japan. A half of the bamboo stumps which harbored the 3rd and 4th instar larvae of T. bambusa in November 1995 dried up at least once in winter and almost all the larvae in them died. From November 1995 to March 1996,the total number of overwintering 3rd and 4th instar larvae in the study area decreased from 1208 to 225. The incidence of T. bambusa larvae increased from March, when the new cohort from overwintering eggs appeared and the total number of 2nd-4th instar larvae and pupae reached 2994 in May. About a half of them existed in stumps which had dried up at least once in winter, indicating that the overwintering eggs of T. bambusa have desiccation resistance. In spring, T. bambusa became abundant earlier than did other mosquitoes such as Aedes albopictus and A. japonicus, and could grow without the major competitors. These overwintering characteristics of T. bambusa can facilitate its predominance in the bamboo grove.
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