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Ovarian atresia in the Mediterranean sardine, Sardina pilchardus sardina

Published online by Cambridge University Press:  08 January 2004

K. Ganias ,
S. Somarakis ,
C. Koutsikopoulos ,
A. Machias  and
A. Theodorou
K. Ganias
Affiliation:
University of Thessaly, Laboratory of Oceanography, Fytokou st. 38446, N. Ionia, Volos, Greece
S. Somarakis
Affiliation:
University of Patras, Department of Biology, Laboratory of Zoology, 26500 Rio, Patras, Greece Institute of Marine Biology of Crete (IMBC), PO Box 2214, 710 03 Iraklion, Greece
C. Koutsikopoulos
Affiliation:
University of Patras, Department of Biology, Laboratory of Zoology, 26500 Rio, Patras, Greece
A. Machias
Affiliation:
Institute of Marine Biology of Crete (IMBC), PO Box 2214, 710 03 Iraklion, Greece
A. Theodorou
Affiliation:
University of Thessaly, Laboratory of Oceanography, Fytokou st. 38446, N. Ionia, Volos, Greece
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Abstract

Histological analysis was used to describe and analyse the process of ovarian atresia in sardine (Sardina pilchardus sardina) from the central Aegean Sea (eastern Mediterranean). The spawning potential of females in relation to intensity of atresia was evaluated and the rate that the ovary passed from the active to inactive condition was followed in fish collected over an annual cycle. Early postspawning females, defined as those with 100% alpha-atretic oocytes, occurred throughout the spawning period; they had lower gonosomatic and hepatosomatic index, but similar total length compared to reproductively active females.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 83 , Issue 6 , December 2003 , pp. 1327 - 1332
Copyright
2003 Marine Biological Association of the United Kingdom

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