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Fecundity and Other Aspects of the Reproduction of Sablefish, Anoplopoma Fimbria, in Central California Waters
| Content Provider | Semantic Scholar |
|---|---|
| Author | Hunter, John R. Macewicz, Beverly J. Kimbrell, Carol A. |
| Copyright Year | 1989 |
| Abstract | Along the central California coast from Point Conception to Monterey Bay, sablefish specimens were taken in research trawls, in traps, and from the fishery. Sablefish in spawning condition occurred in October through early February. Fifty percent of the females 60 cm long were sexually mature. Most of the females with active ovaries were taken in the oxygen minimum zone; 96% of the reproductively active females occurred at depths of 800 m or deeper. The mean length of males and females taken in trawls increased with depth. Five lines of evidence indicated that the standing stock of advanced yolked oocytes was equivalent to the total potential annual fecundity; in other words, fecundity is determinate in sablefish. The potential annual fecundity of a 2.5-kg sablefish was 107 oocytes per gram female weight; the batch fecundity averaged 24 hydrated oocytes per gram female weight for the last spawn, and 41 for earlier spawnings. Thus sablefish would have to spawn about three times to fully use their potential annual fecundity. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.calcofi.org/publications/calcofireports/v30/Vol_30_Hunter_etal.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
