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An ultrastructural and cytochemical analysis of oogenesis in the squid, Loligo pealei
Author(s) -
Selman Kelly,
Arnold John M.
Publication year - 1977
Publication title -
journal of morphology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.652
H-Index - 74
eISSN - 1097-4687
pISSN - 0362-2525
DOI - 10.1002/jmor.1051520308
Subject(s) - syncytium , biology , vitellogenesis , oogenesis , oocyte , microbiology and biotechnology , ultrastructure , follicular phase , follicle , yolk , cytochemistry , cytoplasm , anatomy , biochemistry , botany , endocrinology , cell , embryo , ecology
Oogenesis has been investigated utilizing both light and electron microscopical techniques in the squid, Loligo pealei. This complex process has been divided into five stages according to the structure of the follicle. Because of the highly coordinated differentiation of the follicle cells (and follicular syncytium) and the oocyte, their development is described in concert. Specific attention is given to the contribution of the follicular syncytium to vitellogenesis and the formation of the extracellular egg envelope or chorion. Our observations indicate heterosynthetic yolk production and the synthesis of the secondary envelope by the follicular syncytium.