Natural Spawning of Captive Bigeye Scad Selar crumenophthalmus in Hawaii |
| |
| Authors: | Thomas Y. Iwai Jr. Clyde S. Tamaru Leslee Yasukochi Shelley Alexander Rona Yoshimura Mark Mitsuyasu |
| |
| Affiliation: | Hawaii Division of Aquatic Resources, Anuenue Fisheries Research Center, 1039 Sand Island Parkway, Honolulu, Hawaii 96819 USA;Sea Grant Extension Service, University of Hawaii, 1000 Pope Road, MSB 226, Honolulu, Hawaii 96822 USA;Steven Birch Aquarium-Museum, Scripps Institution of Oceanography. University of California at San Diego, 9500 Gilman Drive, La Jolla, California 92093 USA;Hawaii Division of Aquatic Resources, Anuenue Fisheries Research Center, 1039 Sand Island Parkway, Honolulu, Hawaii 96819 USA |
| |
| Abstract: | ![]()
Abstract.— 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 × 103 to 121 × 103 eggs/spawning group, 5 to 10 times per year. Stocking densities of 1–8 individuals/m3 were found to be suitable for natural spawning to occur. Collectively, the results indicate that this species exhibits notable potential for artificial propagation. |
| |
| Keywords: | |
|
|
