Journal of Economic Entomology (1965) 58, 173-174

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O.L. Barnes (1965)
Tests for parthenogenesis in migratory, differential and desert grasshoppers
Journal of Economic Entomology 58 (1), 173-174
Abstract: Three species of grasshopper, reared from nymphs taken in the field, were tested for parthenogenesis. Both virgin females, and males and females caged together, were kept under observation. Longevity was greater in the case of virgin than mated females. Of 28 nymphs from eggs laid by virgin Melanoplus sanguinipes, 16 died in the first instar, and only one reached the 6th-instar, dying after 42 days. Eggs of M. differentialis laid by both virgin and mated females showed no advanced embryonic development, and were concluded to be in diapause. Of eggs laid by virgin Trimerotropis p. pallidipennis,. only four nymphs were obtained, of which two reached the 2nd- and 3rd-instar.
(The abstract is excluded from the Creative Commons licence and has been copied from Acridological Abstracts with permission by NRI, Univ. of Greenwich at Medway.)

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.

Melanoplus sanguinipes
Melanoplus differentialis