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Reproductive Cycle of Marphysa sanguinea (Montagu, 1815) (Polychaeta: Eunicidae) in the Lagoon of Tunis
Joint Authors
El Barhoumi, Monia
Zghal, Fathia
Scaps, Patrick
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-06-04
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Medicine
Information Technology and Computer Science
Abstract EN
The reproductive cycle of Marphysa sanguinea (Polychaeta: Eunicidae) was studied in the Lagoon of Tunis between May 2006 and May 2007.
M.
sanguinea is a gonochoric species.
There were no morphological differences between males and females, and spawning occurred without epitokal metamorphosis.
Gonads are not well defined in either sex.
The process of spermatogenesis takes place in the coelomic cavity.
Mature males show all stages of spermiogenesis at any one time.
The ovaries of M.
sanguinea consist of coelomic germ-cell clusters surrounded by a thin envelope of follicle cells derived from the peritoneum.
Germ cells in premeiotic and previtellogenic phases are observed in one cluster.
In each cluster the more differentiated oocytes detach and float free in the coelomic cavity where they undergo vitellogenesis as solitary cells.
The cytoplasmic material of the mature oocytes (diameter superior to 200 μm) is asymmetrically distributed; large lipid droplets and large yolk spheres occupy the vegetal pole of the oocyte while smaller yolk spheres are situated in the animal hemisphere.
The female coelomic puncture has a heterogeneous aspect and shows different oocyte diameters.
The reproductive period is more intense in winter period from January to March.
Spawning occurs mainly in April.
American Psychological Association (APA)
El Barhoumi, Monia& Scaps, Patrick& Zghal, Fathia. 2013. Reproductive Cycle of Marphysa sanguinea (Montagu, 1815) (Polychaeta: Eunicidae) in the Lagoon of Tunis. The Scientific World Journal،Vol. 2013, no. 2013, pp.1-7.
https://search.emarefa.net/detail/BIM-1033126
Modern Language Association (MLA)
El Barhoumi, Monia…[et al.]. Reproductive Cycle of Marphysa sanguinea (Montagu, 1815) (Polychaeta: Eunicidae) in the Lagoon of Tunis. The Scientific World Journal No. 2013 (2013), pp.1-7.
https://search.emarefa.net/detail/BIM-1033126
American Medical Association (AMA)
El Barhoumi, Monia& Scaps, Patrick& Zghal, Fathia. Reproductive Cycle of Marphysa sanguinea (Montagu, 1815) (Polychaeta: Eunicidae) in the Lagoon of Tunis. The Scientific World Journal. 2013. Vol. 2013, no. 2013, pp.1-7.
https://search.emarefa.net/detail/BIM-1033126
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1033126