Structure of the ovaries in larvae and mature females of euholognathan stoneflies (Plecoptera)

Author: Rościszewska, Elżbieta

Source: Acta Zoologica, Volume 82, Number 4, October 2001 , pp. 307-314(8)

Publisher: Blackwell Publishing

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Abstract:

Rościszewska, E. 2001. Structure of the ovaries in larvae and mature females of euholognathan stoneflies (Plecoptera). — Acta Zoologica (Stockholm) 82: 307-314

The morphology of ovaries, oviducts and egg capsules in four species of euholognathan stoneflies was investigated. The characteristic features found were as follows: (i) numerous, long ovarioles, that open individually to the extensively folded, lateral oviducts; (ii) a thin, morphologically undifferentiated chorion; (iii) a thick gelatinous layer (extrachorion) which acts as an adhesive layer fixing the eggs to the substrate. Additionally, in the larval ovariole of Leuctra sp. the terminal filament anlage and clusters of germ cells have been found. These observations are in agreement with the classification of stonefly ovaries as primary (true) panoistic.

Keywords: oogenesis; panoistic ovariole; nuage; eggshells

Document Type: Research article

DOI: 10.1046/j.1463-6395.2001.00090.x

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