• Title of article

    The impact of sewage sludge exposure on the reproduction of the sand goby, Pomatoschistus minutus Original Research Article

  • Author/Authors

    Colin P. Waring، نويسنده , , Ronald M. Stagg، نويسنده , , Karen Fretwell، نويسنده , , H. Anne McLay، نويسنده , , Mark J. Costello، نويسنده ,

  • Issue Information
    روزنامه با شماره پیاپی سال 1996
  • Pages
    9
  • From page
    17
  • To page
    25
  • Abstract
    Adult sand gobies were exposed to 0.1% sewage sludge for 19 weeks prior to the end of spawning. Exposure to sewage sludge had a significant effect on male mortality rates but no significant effects on the gonadosomatic index of males or females. There were no major effects of sludge exposure on testes androgen content or on testes release of androgens after in vitro gonadotrophin stimulation. Fecundity and the number of larvae produced were not significantly affected by the sludge exposure. There was a tendency for eggs and larvae from sludge-exposed females to have a higher mortality rate. At a population level, however, there was a major reduction in the number of eggs and larvae produced in the sludge-exposed population which reflected a failure of some females to spawn. Of the larvae produced, 60–70% from sludge-exposed parents were lighter and had a larger yolk-sac volume compared to larvae from non-exposed parents which may have indicated impaired yolk utilisation.
  • Keywords
    sewage sludge , Larvae , Pomatoschistusminutus , fecundity. , Reproduction
  • Journal title
    ENVIRONMENTAL POLLUTION
  • Serial Year
    1996
  • Journal title
    ENVIRONMENTAL POLLUTION
  • Record number

    728998