Growth of white sturgeon (Acipenser transmontanus) following recovery from the stunted stage in a commercial farm in California, USA

M. P. Georgiadis, Ronald Hedrick, W. O. Johnson, Ian Gardner

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

Runt white sturgeon (Acipenser transmontanus) develop during grow-out and are characterized by atrophied muscles and decreased growth. Our first objective was to compare the growth (and body condition) of previously-runt white sturgeon after they recovered from the run state and sturgeon that had never been runts. On 12 occasions, recovered runts and age- and size-matched controls that had never been runts were tagged and put in a tank that already contained fish of similar age and size. Tagged groups were followed for 119-134 days. Median relative growth rates (RGRs) of the recovered runts were significantly (p ≤ 0.05) higher than those of the controls in three tanks. Multiple linear regression was used to model final weight as a function of initial weight and status (recovered runt or control). Status was not significantly related (p = 0.71) to final weight, after adjusting for initial weight, 'tank' and time of follow-up. Our second objective was to determine factors that influenced the loss of tags by white sturgeon during the follow-up period. Logistic regression analysis indicated that higher initial weight and being a control fish might have been associated with losing both tags. We concluded that once white sturgeon runts recovered and started growing, they grew at least as well as fish that had never been runts. (C) 2000 Elsevier Science B.V.

Original languageEnglish (US)
Pages (from-to)283-291
Number of pages9
JournalPreventive Veterinary Medicine
Volume43
Issue number4
DOIs
StatePublished - Feb 29 2000

Keywords

  • Growth rate
  • Recovery
  • Runt
  • Tagging
  • White sturgeon

ASJC Scopus subject areas

  • Food Animals
  • Animal Science and Zoology

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