The Planktonic Copepods (Calanoida, Cyclopoida, Monstrilloida) of Ungava Bay, with Special Reference to the Biology of Pseudocalanus minutus and Calanus finmarchicus

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Abstract
Collections of planktonic copepods of Ungava Bay and central Hudson Strait were made during late June, July and August of 1947, 1949 and 1950. Of the 22 spp. identified, Cyclopina gracilis, C. schneideri, Monstrilla dubia, M. helgolandica and M. canadensis have not previously been recorded from the western North Atlantic. Males of Cyclopina schneideri are described for the 1st time. The 2 most abundant spp., Calanus finmarchicus and Pseudocalanus minutus, have 1 generation a year. A small part of the population of Pseudocalanus minutus breeds a 2d time in the autumn. The next most common sp., Acartia longiremis and Oithona similis, probably breed and spawn in July. The population dynamics of all the spp. are discussed.

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