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Spawning frequency and batch fecundity of horse mackerel, Trachurus trachurus (L.), in the Saronikos Gulf (Greece)

Spawning frequency and batch fecundity of horse mackerel, Trachurus trachurus (L.), in the... Horse mackerel, Trachurus trachurus (L.), is a multiple spawning fish with most probably an indeterminate fecundity. Histological sections of gonads were used to identify the hydrated oocytes, the migratory‐nucleus stage oocytes, and the new and old post‐ovulatory follicles. Spawning frequency determination, based on the mean percentage estimation of the females that occurred in different spawning states such as migratory‐nucleus stage oocytes and post‐ovulatory follicles during two successive reproductive periods, was found to average once every 5.8 and 4.8 days, respectively. High spawning frequency was observed at the peak of spawning. Relative batch fecundity of 205 oocytes/g fish weight was estimated by the hydrated and migratory‐nucleus method. Since potential annual spawnings were found to be equal to 16, potential annual relative fecundity could be 3280 oocytes/g fish weight. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Applied Ichthyology Wiley

Spawning frequency and batch fecundity of horse mackerel, Trachurus trachurus (L.), in the Saronikos Gulf (Greece)

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References (32)

Publisher
Wiley
Copyright
Copyright © 1997 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0175-8659
eISSN
1439-0426
DOI
10.1111/j.1439-0426.1997.tb00108.x
Publisher site
See Article on Publisher Site

Abstract

Horse mackerel, Trachurus trachurus (L.), is a multiple spawning fish with most probably an indeterminate fecundity. Histological sections of gonads were used to identify the hydrated oocytes, the migratory‐nucleus stage oocytes, and the new and old post‐ovulatory follicles. Spawning frequency determination, based on the mean percentage estimation of the females that occurred in different spawning states such as migratory‐nucleus stage oocytes and post‐ovulatory follicles during two successive reproductive periods, was found to average once every 5.8 and 4.8 days, respectively. High spawning frequency was observed at the peak of spawning. Relative batch fecundity of 205 oocytes/g fish weight was estimated by the hydrated and migratory‐nucleus method. Since potential annual spawnings were found to be equal to 16, potential annual relative fecundity could be 3280 oocytes/g fish weight.

Journal

Journal of Applied IchthyologyWiley

Published: Oct 1, 1997

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