Premium
Techniques for Spawning Common Snook: Broodstock Handling, Oocyte Staging, and Egg Quality
Author(s) -
Neidig Carole L.,
Skapura Diana P.,
Grier Harry J.,
Dennis Clyde W.
Publication year - 2000
Publication title -
north american journal of aquaculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.432
H-Index - 41
eISSN - 1548-8454
pISSN - 1522-2055
DOI - 10.1577/1548-8454(2000)062<0103:tfscsb>2.0.co;2
Subject(s) - broodstock , biology , fishery , zoology , fish <actinopterygii> , aquaculture
Abstract Methods were developed to improve spawning procedures for common snook Centropomus undecimalis. Individual females were isolated in net‐pens to facilitate handling in taking ovarian biopsies, contain shed eggs, and minimize mortalities. A simple coverslip wet‐mount method was developed for rapid and accurate evaluation of final oocyte maturation; oocyte development was divided into four easily recognized stages. These stages were correlated with histological sections. Five indicators were examined to assess spawn quality. The three best indicators were percent fertilization, percent hatch, and percent survival to first feeding. Egg and oil droplet diameters were not reliable indicators of egg quality in common snook.