Effect of Some Environmental Factors on Survival of Overwintering Mosquitoes, Culex pipiens pallens
| Autor: | Ikuko Sakaki, Itsuhiro Taguchi, Kiyoshi Makiya |
|---|---|
| Rok vydání: | 1985 |
| Předmět: |
Veterinary medicine
education.field_of_study Culex pipiens pallens fungi Population Significant difference Public Health Environmental and Occupational Health Environmental factor Japanese B Encephalitis Virus General Medicine Biology Population ecology medicine.disease_cause parasitic diseases Botany medicine education Survival rate Overwintering |
| Zdroj: | Journal of UOEH. 7:175-183 |
| ISSN: | 2187-2864 0387-821X |
| DOI: | 10.7888/juoeh.7.175 |
| Popis: | In connection with the possible overwintering of Japanese B encephalitis virus in mosquitoes, some experiments were carried out to examine the effect of temperature, day-length and blood feeding on the survival of the overwintering population of the mosquito, Culex pipiens pallens. No significant difference was observed in the survival rate between the blood-fed and unfed groups under a higher temperature (24 degrees C) and longer day-length (L:D 14:10). Under a lower temperature (16 degrees C) and shorter day-length (L:D 10:14), blood-fed mosquitoes survived twice as long as those under a higher temperature and longer day-length condition. Based on the analysis of wing-length distribution, it was clarified that the blood-fed mosquitoes were a uniform longer-winged group and that most of the shorter-winged mosquitoes were included in the unfed group. Judging from such lower blood-feeding activity of the shorter-winged mosquitoes, their survival rate is suggested to be low during or after overwintering. |
| Databáze: | OpenAIRE |
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