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EFFECTS OF LOW PH ON REPRODUCTION OF RAINBOW TROUT
Citation:
Weiner, G., C. Schreck, AND H. Li. EFFECTS OF LOW PH ON REPRODUCTION OF RAINBOW TROUT. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-86/112 (NTIS PB86230117), 1986.
Description:
Reproduction of rainbow trout, Salmo gairdneri in acidic water was studied. Adults were exposed to waters of pH 4.5, 5.0, or 5.5 during the final 6 weeks of reproductive maturation; control acidities were pH 6.5-7.1. Progeny of acid-exposed females and control males had reduced survival through 7 d of development, hatching, and yolk-sac absorption, demonstrating that oogenesis is sensitive to acidic conditions. Similar reductions in the survival of the progeny of acid-exposed males and control females indicate the sensitivity of spermatogenesis to low ambient pH. Among the progeny of unexposed adults, survival through 7 d of development and hatching was lower during rearing at pH 4.5, 5.0, or 5.5 than at pH 6.5-7.1.