Durbin, E.G., J.A. Runge, R.G. Campbell, P.R. Garrahan, M.C. Casas & S.Plourde. (1997). Late fall-early winter recruitment of Calanus finmarchicus on Georges Bank. Marine Ecology Progress Series. 151(1-3): 103-114.

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Durbin, E.G., J.A. Runge, R.G. Campbell, P.R. Garrahan, M.C. Casas & S.Plourde

1997

151(1-3): 103-114.

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: The development of Calanus finn~archicusin the Gulf of Maine (GOM),USA, and on Georges Bank (GB) was investigated during late fall, 1994, and winter, 1995, as part of the US- GLOBEC Georges Bank program. During November almost all of the C bnmai-chicus population In both regions was present as C5, with a small proportion of C4 and females There were vely few anlmals on GB. In the southern GOM about a third of the C. finmarchicus population was In the upper 80 m and actively feeding; the rerna~nderwere below 120 m. On GB the C. fjnmarch~cuspopulation was also feeding; gut p~glnentcontent in both areas was between 3 and 13 ng copepod-'. About one thlrd of the adult females on GB were reproductively act~veivh~lenone in the GOM were reproduc- tlvely active. By January C. finmarchicus C6 females formed a large proportion of the older stage an~malson the Bank and in surface waters of the southern GOM These were actively feed~ngand reproducing with a large cohort of young nauplii of C, finmarch~cuspresent in the southern GOM and smaller numbers on the northeast peak of the Bank. There were very few C. finmarchicus nauplii on the crest of the Bank or on the southern flank. Based on abundances and stage composition, it appeared that spawning began in late December and that repopulation of the Bank took place in the region of the NE peak, with nauplii and reproductlvely active females being transported onto this region of the Bankfrom the GOM.

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