Length-weight regression and condition indices of Lutjanids and other deep slope fishes from the Mariana archipelago
Ralston S. 1985. Length-weight regression and condition indices of Lutjanids and other deep slope fishes from the Mariana archipelago. Southwest Fisheries Center, National Marine Fisheries Service. Honolulu, Hawaii
Predictive length-weight regressions for 23 commercial species of Marianas bottom fish are derived, based on a resource assessment program of hook-and-line sampling over deep slope (165-240 m) fishing grounds. Species in the snapper, (Lutjanidae), group (Serranidae), and jack (Carangidae) families predominated in the catch, especially member of the deep-sea lutjanid genus Pristipomoides. Of the species examined, eight were characterized by allometric growth. An index of fish condition was calculated for individuals from the most abundant species, and this was analyzed for regional variation. It was found that bottom fish populations from the seamounts of the West Mariana Ridge were consistently heavier and more robust for their length than those sampled elsewhere.
- Type
- Published Report
- Authors
- Ralston, Stephen
- Date of Issue
- 1985
- Publisher
- Southwest Fisheries Center, National Marine Fisheries Service
- Units
- AMME , PACN , WAPA
- Keywords
- bottom fish, Fish/Ichthyology, grouper (Serranidae), Guam, jack (Carangidae), Mariana Islands, Pristipomoides, Saipan, snapper (Lutjanids)