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Evidence for endocytotic incorporation of nutrients from thehaemal sinus by the oocytes of the brittlestar Ophiolepis paucispina.
| Title: | Evidence for endocytotic incorporation of nutrients from thehaemal sinus by the oocytes of the brittlestar Ophiolepis paucispina. |
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| Name(s): |
Byrne, M. Harbor Branch Oceanographic Institute |
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| Type of Resource: | text | |
| Genre: | Article | |
| Date Issued: | 1988 | |
| Publisher: | A. A. Balkema. | |
| Place of Publication: | Brookfield, VT | |
| Physical Form: | ||
| Extent: | 9 p. | |
| Language(s): | English | |
| Identifier: | FA00007374 (IID) | |
| Note(s): |
Ophiolepis paucispina is a small brittlestar that produces large yolky eggs
and has ovoviviparous development. Ultrastructural examination suggests that oogenesis
is supported by exogenously derived nutrients. During oogenesis, oocytes evaginate into
the genital haemal sinus. As the oocytes grow, they are surrounded by the haemal sinus,
although they remain separated from the haemal fluid by a basal lamina. Endocytotic
activity is prevalent throughout oogenesis, indicating uptake of exogenous material.
The ER and Golgi complex appear to be involved in elaboration of the yolk bodies. It is proposed that yolk precursors formed outside the oocyte are delivered to the oocytes by
the genital haemal sinus and that this sinus functions as an intragonadal nutrient storage
organ. Florida Atlantic University. Harbor Branch Oceanographic Institute contribution 600 This manuscript is an author version with the final publication available and may be cited as: Byrne, M. (1988). Evidence for endocytotic incorporation of nutrients from the haemal sinus by the oocytes of the brittlestar Ophiolepis paucispina. In R. D. Burke, P. V. Mladenov, P. Lambert, & R. L. Parsley (Eds.), Proceedings of the Sixth International Echinoderm Conference, Victoria, 23-28 August 1987 (pp. 557-563). Rotterdam; Brookfield, VT: A. A. Balkema. |
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| Subject(s): |
Brittle-stars Ophiurida Oocytes Endocytosis Echinodermata |
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| Persistent Link to This Record: | http://purl.flvc.org/fau/fd/FA00007374 | |
| Host Institution: | FAU |
