M. Ulmestrand et H. Eggert, Growth of Norway lobster, Nephrops norvegicus (Linnaeus 1758), in the Skagerrak, estimated from tagging experiments and length frequency data, ICES J MAR, 58(6), 2001, pp. 1326-1334
Parameter values for the von Bertalanffy growth model are estimated for Nep
hrops norvegicus in the Skagerrak on the Swedish west coast using analysis
of length frequency distribution from commercial catches and tag-recapture
data. The asymptotic lengths (L-infinity) for males and females are estimat
ed from size distributions using a modified Powell-Wetherall plot. The tagg
ing experiment was conducted with Floy streamer tag and analysed in a "forc
ed" Gulland-Holt plot to estimate the growth coefficient K for males. The e
stimates of L-infinity (72.9) and K (0.138) for males differ from those cur
rently used in the ICES assessment for this area (76 and 0.16, respectively
), and the results are discussed in relation to sensitivity to reference po
ints from analytical stuck assessments and possible implications for manage
ment decisions.