On the Culex pipiens group in Japan Part II : VII. Siphonal hair types from the type 5-5 population of Culex pipiens molestus Forskal (Diptera, Culicidae)

Abstract

The segregation of the siphonal hair types was observed in the progenies which were produced by the parent populations composed of type 5-5 of the siphonal hair type in Culex pipiens molestus (Tables 3 and 4). When the selection progressed; the frequency of type 4-4 decreased; that of 5-4 fluctuated between 11.3 and 44.5%; that of type 5-5 increased; and the types other than the above did not occur. Viability of the type 5-5 population decreased so as not to yield the 11th generation.