Size- and weight-dependent cannibalism in hatchery-bred sea bass (Lates calcarifer Bloch)

View/ Open
Request this document
Date
1991Page views
55Metadata
Show full item recordCited times in Scopus
Share
Abstract
The relationship of predator size to maximum prey size, and predator weight to weight of prey consumed among cannibalistic sea bass (Lates calcarifer Bloch) in a hatchery were assessed. Maximum prey size was computed from morphological measurements (predator mouth width, prey body depth and fish total length), while prey consumption was determined from predators kept in experimental beakers and fed only prey sea bass for a 7-day period. Maximum prey size was 61–67 % of predator total length \((TL_{prey} = 0.5944 TL_{predator} + 0.0724)\). Gut dissection of predators showed that size of ingested prey increased with increasing predator size not exceeding the maximum size limit indicated by the above equation. Daily prey consumption of predators in the beakers was expressed as \(W_{Prey} = -0.2407\; W_{predator^{2}}+ 0.7697W_{predator}-0.1141\). During hatchery rearing of sea bass, fish with length differences of more than 33 % must be separated and food of appropriate size provided to limit cannibalism.
Suggested Citation
Parazo, M. M., Avila, E. M., & Reyes Jr., D. M. (1991). Size- and weight-dependent cannibalism in hatchery-bred sea bass (Lates calcarifer Bloch).Subject
Taxonomic term
Collections
- AQD Journal Articles [1155]
Related items
Showing items related by title, author, creator and subject.
-
1988 annual report
Southeast Asian Fisheries Development Center, Aquaculture Department (Aquaculture Department, Southeast Asian Fisheries Development Center, 1989) -
Net cage culture of Lates calcarifer Bloch and other marine animals in Thailand
Dhebtaranon, Yodying; Maneewongsa, Sujin; Wongsomnuk, Swad (Aquaculture Department, Southeast Asian Fisheries Development Center; International Development Research Centre, 1979)Feeding experiments on sea bass, Lates calcaifer , have been carried out in nylon net cages in Songkhla, since 1971, to obtain information on: (1) growth rates; (2) survival rates; (3) food conversion rates; (4) environmental ... -
Nursery culture of high-value fish species in brackishwater ponds
Ladja, Jocelyn M.; Gapasin, Rolando S. J. (Aquaculture Department, Southeast Asian Fisheries Development Center, 2009)