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Journal
2004 | 52 | 3-4 | 175-184
Article title

Ovariole development in telotrophic ovaries of snake flies (Raphidioptera)

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Languages of publication
EN
Abstracts
EN
Snake flies (Raphidioptera), alder flies (Megaloptera: Sialidae) and also some myxophagan coleopterans share the same, peculiar telotrophic organization of their ovarioles usually referred to as ovarioles of the Sialis-type. Ovariole ontogenesis in Raphidia sp. is described and the basic events that lead to the formation of germ cell clusters and their subsequent transformations are reported. It was found that the major cellular events during ovariole formation in Raphidia and Sialis are essentially the same. Discrepancies concern details of germ cell cluster formation, differentiation of cystocytes within clusters and their location within the developing tropharium. Based on these results the hypothetical model of the Sialis-type ovariole formation, previously presented by KING and BNING (1985) is verified. A hypothesis on the mechanisms of oocyte determination in telotrophic ovaries is also presented.
Keywords
Publisher

Journal
Year
Volume
52
Issue
3-4
Pages
175-184
Physical description
Contributors
References
Document Type
ARTICLE
Publication order reference
Janusz Kubrakiewicz, Zoological Institute, University of Wroclaw, Sienkiewicza 21, 50-335 Wroclaw, Poland.
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YADDA identifier
bwmeta1.element.element-from-psjc-0c6a12b1-9702-3506-aa8c-bf5556f2bf2a
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