Reproductive Biology of Two Hawaiian Pelagic Carangid Fishes, the Bigeye Scad, Selar Crumenophthalmus, and the Round Scad, Decapturus Macarellus
Bigeye scad Selar crumenophthalmus and round scad Decapturus macarellus were sampled from commercial fishery catches in Hawaii. Size at maturity of bigeye scad is ≤200 mm standard length. Spawning season is from April through September or October. Round scad mature at about 245 mm SL, and spawning occurs from April through August. Both species appear to spawn sometime between dawn and dusk. For bigeye scad, the frequency of postovulatory follicles indicates that females spawn every three days; batch costs average about 3% of body weight. Postovulatory follicles were found very infrequently in round scad. Mean batch fecundities of bigeye scad and round scad were 92,000 and 136,000, respectively; relative fecundity of bigeye scad averaged about twice that of round scad. Fecundities of bigeye scad and round scad are similar to those reported for other tropical carangids. Annual reproductive output appears to be higher in bigeye scad and round scad than in the temperate Trachurus spp., but spawning frequency of the latter may have been underestimated by most previous studies.
No Supplementary Data.
No Article Media
Document Type: Research Article
Publication date: 1995-01-01
More about this publication?
- The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
- Editorial Board
- Information for Authors
- Subscribe to this Title
- Terms & Conditions
- Ingenta Connect is not responsible for the content or availability of external websites