New Zealand Journal of Marine and Freshwater Research abstracts

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Records of Paraeuchaeta (Copepoda: Calanoida) from McMurdo Sound, Antarctica, with a description of three hitherto unknown males

JANET M. BRADFORD

New Zealand Oceanographic Institute Department of Scientific and Industrial Research P.O. Box 12-346 Wellington North, New Zealand

Abstract Both sexes of Paraeuchaeta antarctica, P. erebi, P. similis, and the males of P. tycodesma are recorded in the winter zooplankton from under the ice in McMurdo Sound, Ross Sea, Antarctica; P. erebi and P. tycodesma are recorded for the second time. The males of P. erebi, P. similis, and P. tycodesma are described and distinguished from P. antarctica. These males are separated by subtle differences in the terminal part of the left fifth leg and by the size of their spermatophore and the shape of its adhesive body. Paraeuchaeta antarctica, P. erebi, and P. similis are apparently in different reproductive states in winter. Spermatophores of P. antarctica were found attached to 2 females of P. erebi.

Keywords Copepoda; Calanoida; Paraeuchaeta antarctica; Paraeuchaeta erebi; Paraeuchaeta similis; Paraeuchaeta tycodesma; Ross Sea; Antarctica; breeding; new records.

New Zealand Journal of Marine and Freshwater Research, 1981, Vol. 15:391-402 Received 19 February 1981

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