Estimation of the stock size of adultNephrops norvegicus(L.) from larvae surveys in the western Irish Sea in 1982

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Abstract
This paper describes the results of Nephrops larvae surveys in the western Irish Sea from April to June 1982. Total production of Stage I zoea obtained from the seasonal production curve is used, together with an estimate of effective fecundity, to assess the number of mature females contributing to the season's hatch. Total production of Stage I zoea was also obtained from the intercept at zero time of the stage to stage mortality regression. Length and weight data from the fishery allow an estimate of the biomass of the mature female stock to be made.