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Ultrastructural evidence for both autosynthetic andheterosynthetic yolk formation in the oocytes of an annelid (Phragmatopoma Lapidosa: Polychaeta)

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Date Issued:
1979
Title: Ultrastructural evidence for both autosynthetic andheterosynthetic yolk formation in the oocytes of an annelid (Phragmatopoma Lapidosa: Polychaeta).
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Name(s): Eckelbarger, Kevin J.
Harbor Branch Oceanographic Institute
Type of Resource: text
Genre: Article
Date Issued: 1979
Publisher: Elsevier
Physical Form: pdf
Extent: 20 p.
Language(s): English
Identifier: FA00007136 (IID), 10.1016/0040-8166(79)90054-5 (doi)
Note(s): The ovaries of the reef-building polychaete Phragmatopoma lapidosa are attached to the genital blood vessels on the caudal surface of the intersegmental septa of the abdominal segments. Oogenesis is not synchronized and vitellogenesis occurs before the oocytes are released from the ovary into the coelomic cavity. A portion of each developing oocyte rests on the basal lamina of the genital blood vessel while the remaining surface of the oocyte is covered by follicle cells. Two morphologically distinct types of yolk are formed during vitellogenesis: Type I, which may be formed autosynthetically by thc conjoined efforts of the rough ER and Golgi systems; and Type II, which is pesumably formed heterosynthetically from endocytosis of yolk precursors from the genital blood vessel. Heterosynthetic production of yolk in an annelid has not been reported previously.
Florida Atlantic University. Harbor Branch Oceanographic Institute contribution 143
This manuscript is an author version with the final publication available and may be cited as: Eckelbarger, K. J. (1979). Ultrastructural evidence for both autosynthetic and heterosynthetic yolk formation in the oocytes of an annelid (Phragmatopoma Lapidosa: Polychaeta). Tissue and Cell, 11(3), 425-443. doi: 10.1016/0040-8166(79)90054-5
Subject(s): Oocytes
Ultrastructure (Biology)
Polychaeta
Egg yolk
Oogenesis
Vitellogenesis
Links: http://dx.doi.org/10.1016/0040-8166(79)90054-5
Persistent Link to This Record: http://purl.flvc.org/fau/fd/FA00007136
Host Institution: FAU