Abstract
Temperature-dependent development of a Czechoslovakian population of the parasitoid Aphidius matricariae Haliday was measured at eight constant temperatures between 11 and 31°C using the Russian wheat aphid, Diuraphis noxia (Mordvilko), as a host. Development rate from oviposition to emergence of adult wasps increased linearly with increasing temperature between 11 and 26°C. No adult wasps emerged from parasitized aphids at 31°C. Requirements for development from oviposition to adult eclosionwere 273.1 ± 5.9 degree-days above a threshold of 4.5 ± 0.4°C. These results are compared with previously reported data on temperature-dependent development of other populations of A. matricariae and the host, D. noxia .
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