Open AccessNatural Spawning of Captive Bigeye Scad Selar crumenophthalmus in Hawaii
Author(s) -
Iwai Thomas Y.,
Tamaru Clyde S.,
Yasukochi Leslee,
Alexander Shelley,
Yoshimura Rona,
Mitsuyasu Mark
Publication year - 1996
Publication title -
journal of the world aquaculture society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.655
H-Index - 60
eISSN - 1749-7345
pISSN - 0893-8849
DOI - 10.1111/j.1749-7345.1996.tb00616.x
Subject(s) - broodstock , biology , spawn (biology) , captivity , juvenile , fishery , captive breeding , stocking , fish measurement , zoology , ecology , fish <actinopterygii> , aquaculture , habitat , endangered species
.— Juvenile bigeye scad Selar crumenophthalmus were caught from the wild by hook and line and reared over 3 yr to establish a spawning broodstock of this species. The size at first maturity for captive males and females was 19‐cm and 25‐cm fork length (FL). Natural spawning of captive individuals occurred during the first year in captivity. The broodstock were observed to spawn repeatedly throughout their second and third years in culture. This species is a multiple spawner producing approximately 96 × 10 3 to 121 × 10 3 eggs/spawning group, 5 to 10 times per year. Stocking densities of 1–8 individuals/m 3 were found to be suitable for natural spawning to occur. Collectively, the results indicate that this species exhibits notable potential for artificial propagation.