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    Record of imposex in Cronia konkanensis (Gastropoda, Muricidae) from Indian waters

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    Mar_Environ_Res_48_123.pdf (152.1Kb)
    Date
    1999
    Author
    VishwaKiran, Y.
    Anil, A.C.
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    Abstract
    This study for the first time records the phenomenon of imposed in gastropods from Indian waters. The gastropods were collected from three stations located in Goa: Marmugao Harbour, Dona Paula and Arambol. Imposex was recorded in a muricid neogastropod species Cronia konkanensis (Melvill, 1893) (Fa: Muricidae) collected from Goa waters located along the west coast of India. The frequency of imposex was found to be in the range of 90-100% in the animals collected from Marmugao Harbour while this value reduced to 0-7% at Dona Paula, whereas no imposex could be recorded at Arambol. The vas deferens sequence (VDS) stages ranged from Stages 0 to 4 in which VDS index of Stages 2 and 3 were predominant in the imposex-affected population. An average VDS index of 2.7 plus or minus 1.0 with an average relative penis size (RPL) index of 67.2% was recorded in Marmugao Harbour snails. The cubed relative penis size (RPS) index was 11.72% in Stage 2 which increased to 55.81% in Stage 4 female snails collected from Marmugao Harbour
    URI
    http://drs.nio.org/drs/handle/2264/1842
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