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NON-RANDOM RESORPTION OF OOCYTES IN GRASSHOPPERS (ORTHOPTERA: ACRIDIDAE)

Published online by Cambridge University Press:  31 May 2012

Robert G. Bellinger
Affiliation:
Department of Entomology, Virginia Polytechnic Institute, and State University, Blacksburg, Virginia, USA 24061
Robert L. Pienkowski
Affiliation:
Department of Entomology, Virginia Polytechnic Institute, and State University, Blacksburg, Virginia, USA 24061

Abstract

Resorption of terminal oocytes was investigated in 3 species of grasshoppers, Melanoplus femurrubrum femurrubrum (DeGeer), M. scudderi (Uhler), and Hippiscus ocelote (Saussure). Significant differences in percentage resorption were found between species. Anterior ovarioles resorbed terminal oocytes more frequently than ovarioles in the middle and posterior regions of the ovaries. Resorption of terminal oocytes due to differences in relative ovariole age does not appear to be a factor in percentage resorption based on the lengths of developing terminal oocytes. There was no difference in percentage resorption of terminal oocytes between ovaries.

Résumé

On a investigué la résorption des oocytes terminaux chez 3 espèces de criquets, Melanoplus femurrubrum femurrubrum (DeGeer), M. scudderi (Uhler), et Hippiscus ocelote (Saussure). On a observé des différences significatives du pourcentage de résorption entre espèces. La résorption des oocytes terminaux était plus fréquente dans les ovarioles antérieures que dans les ovarioles médianes ou postérieures des ovaires. La résorption des oocytes terminaux due à des différences relatives d'âge des ovarioles n'apparait pas affecter le pourcentage de résorption d'après la longueur des oocytes terminaux en développement. On n'a observé aucune différence dans le pourcentage de résorption entre les ovaires.

Type
Articles
Copyright
Copyright © Entomological Society of Canada 1985

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