Ovariole number and fecundity in aphids

Authors

S R. Leather, University of East Anglia, Norwich, UK
Paul W. Wellings, CSIRO, AustraliaFollow

RIS ID

55103

Publication Details

Leather, S. R. & Wellings, P. W. (1981). Ovariole number and fecundity in aphids. Entomologia Experimentalis et Applicata, 30 (2), 128-133.

Abstract

Ovariole number in both the sycamore aphid and the bird cherry-oat aphid was shown to be a constant for a particular generation. This generation specific ovariole number remained constant, despite varied nymphal experiences. The number of embryos per ovariole in the sycamore aphid was dependent on the size of the adult aphid. In the bird cherry-oat aphid, the number of embryos per ovariole was a constant, but the number of pigmented embryos present was a function of the size of the aphid at adult moult. Ovariole number, an index of reproductive potential, was thus concluded to be the result of an intrinsic and programmed factor.