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Ecological study on mosquito communities in tree holes in Nagasaki, Japan, with special reference to Aedes albopictus (Diptera; Culicidae)

1994; Japan Society of Medical Entomology and Zoology; Volume: 45; Issue: 2 Linguagem: Inglês

10.7601/mez.45.103

2185-5609

Yoshio Tsuda, Masahiro Takagi, Yoshito Wada,

Phytoplasmas and Hemiptera pathogens

The seasonal and spatial variations of mosquito communities in tree holes were examined on a small hill in Nagasaki, Japan. Thirty-one tree holes were examined 17 times from October, 1988 to October, 1989. The following 8 species of mosquito larvae were identified : Tripteroides bambusa, Uranotaenia novobscura, Aedes japonicus, Ae. albopictus, Armigeres subalbatus, Culex kyotoensis, Orthopodomyia anopheloides and Ae. nipponicus. A variance test for species association suggested a strong negative association among tree hole mosquitoes. The relationship between tree hole properties and community structure was analyzed to discover what type of tree holes is most commonly occupied by Ae. albopictus and other mosquitoes. Two groups of tree holes were identified by comparing species composition among tree holes based on the Trellis diagram. Comparison of the incidence of tree hole mosquitoes and the physical properties of tree holes in the 2 groups suggested that "open-type" and drought-resisting tree holes having the following properties are most preferable for Ae. albopictus : the hole was top-opening, large in volume and in size of the opening and the surface of standing water was easily detected from the above.