The seasonal development of the gonads and fat content of Tomicus minor (Coleoptera Scolytidae) [lesser pine shoot beetle]
1999
Fernandez Fernandez, M.M. | Salgado Costas, J.M. (Universidad de Leon (Spain). Dept. de Biologia Animal) | Pajares Alonso, J.A.
The seasonal and generational development of the male and female gonads and the fat content of Tomicus minor (Hartig, 1834) throughout their life cycle was observed in a study carried out from 1991 to 1993. Maturation feeding and subsequent overwintering in the shoots of the crowns is reflected in the development and degree of maturity of the reproductive organs, and in the fat content. The beetles were classified as young or mature by observing the size and colour of the gonads. Sperm detected in the female genital tracts provides information on copula and the sperm survival rate.
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