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Effects of rearing temperature on growth and survival of larval sablefish (Anoplopoma fimbria)



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  • Journal Title:
    Aquaculture Research
  • Personal Author:
  • NOAA Program & Office:
  • Description:
    The effects of three different rearing temperatures (12, 15 and 18°C) on growth and survival of sablefish larvae (Anoplopoma fimbria) were examined from 5 days poststocking to weaned subjuveniles. First-feeding larvae were stocked into 960-L circular tanks at a density of 15 larvae/L (n = 3 per temperature treatment). Feeding, increases in light and water flow and other changes during the experiment were based on a degree-day (°Cday) schedule to adjust for time and temperature. The larvae were weaned on calendar day 41, 34 and 30 in the 12, 15 and 18°C treatments respectively. Survival to weaning was greater at 15 than 12 or 18°C. Calendar day and degree-day length and dry weight were greater in the 18°C treatment. The larvae were weaned 7 days earlier at 15°C and 11 days earlier at 18°C compared to larvae at 12°C. Sablefish larvae can be reared at 15°C with faster growth and good survival compared to 12°C and at an approximately 17% reduction in cost and labour. Sablefish grew even faster but had higher mortality rates at 18°C compared to 15°C. Results from genotyping strongly suggest that there is a genetic basis for performing differentially at varying rearing temperatures and would also suggest that selection for faster growth and higher survival could be accomplished in a broodstock programme.
  • Keywords:
  • Source:
    Aquaculture Research, 49(1), 422-430
  • DOI:
  • ISSN:
    1355-557X
  • Format:
    PDF
  • Publisher:
    Hindawi Limited
  • Document Type:
    Journal Article
  • License:
  • Rights Information:
    CC0 Public Domain
  • Compliance:
    Library
  • Main Document Checksum:
    urn:sha-512:16308e94df695ac279d63522f53ff8fd82bf8814c471e1fab492fe2abf6c3afaa1fa07e17b99fe6f4eade3ea1254903fa1400a578a234c1fc19e1df014333cad
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  • File Type:
    Filetype[PDF - 604.93 KB ]
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