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Enhanced survival in striped bass fingerlings after maternal triiodothyronine treatment

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Abstract

Elevation of the triiodothyronine (T3) content of striped bass (Morone saxatilis) eggs by maternal T3 injection confirms the uptake of T3 by oocytes. The resulting offspring were influenced favorably by the T3, as seen in quantitative indices of development. As reported previously, larvae from T3-supplemented eggs raised under laboratory conditions exhibited increased body area, length, dry weight, and rates of swimbladder inflation and survival, compared to controls. Also, the T3 content of unfertilized oocytes correlated positively and highly significantly with survival to two weeks of age within individual cohorts (Brownet al., 1988). In the present study, the survival of experimental and control striped bass was monitored through the fingerling stage, under hatchery production conditions. The rate of recovery of maternally T3-treated cohorts from pond-culture was approximately fourfold that of controls. The striking effects of T3 enrichment of eggs on offspring indicate the potential contribution of maternal hormones in striped bass development, and suggest possible applications in aquaculture.

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Authors and Affiliations

  1. Department of Zoology and Cancer Research Laboratory, University of California, Berkeley, CA, 94720, USA

    Christopher L. Brown & Howard A. Bern

  2. Department of Animal Sciences, University of California, Davis, CA, 95616, USA

    Serge I. Doroshov

  3. California Department of Fish & Game, Central Valley Hatchery, 9300 Elk Grove-Florin Road, Elk Grove, CA, 95624, USA

    Michael D. Cochran

Authors
  1. Christopher L. Brown
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  2. Serge I. Doroshov
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  3. Michael D. Cochran
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  4. Howard A. Bern
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Brown, C.L., Doroshov, S.I., Cochran, M.D. et al. Enhanced survival in striped bass fingerlings after maternal triiodothyronine treatment. Fish Physiol Biochem 7, 295–299 (1989). https://doi.org/10.1007/BF00004720

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  • DOI: https://doi.org/10.1007/BF00004720

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