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Reproductive parameters of common carp(Cyprinus carpioL) spawners during natural season and out-of-season spawning

Authors
Journal
Reproductive Biology
1642-431X
Publisher
Elsevier
Volume
8
Issue
3
Identifiers
DOI: 10.1016/s1642-431x(12)60018-7
Keywords
  • Common Carp
  • Reproduction
  • Season Spawning
  • Out-Of-Season Spawning
  • Spawning Success

Abstract

SUMMARY Common carp spawning characteristics were compared between season and out-of-season periods. There were no differences in the percentage of ovulation, spermatozoa motility and embryo survival to the eyed-egg-stage between the spawning periods. Fish spawned during the season produced oocytes of higher total weight than those spawned out-of-season. On the day exogenous feeding began, larvae obtained in out-of-season spawning were shorter than those obtained during the spawning season. However, the out-of-season larvae started feeding two days earlier than in-season larvae. As a result, seven days after fertilization, larvae obtained during out-of-season had the same length as larvae obtained during season. It appears to be possible to obtain common carp larvae half a year before the natural spawning period without decreasing the quality of gametes and larvae.

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