Technique for rearing Marine Calanoid Copepods in Laboratory Conditions

Abstract

Allen and Nelson¹, who succeeded in keeping several Calanus alive for a few weeks in laboratory conditions, stated that it should be possible to rear Calanus in the laboratory without difficulty. Since then it has become apparent that the marine calanoid copepods are hard to rear and breed in laboratory conditions, and Crawshay² has discussed some of the early difficulties. A. G. Nicholls (unpublished results) reared three adult female Calanus from eggs³, and Conover⁴ reared two adult female Calanus with considerable mortality. It is only recently, however, that marine calanoid copepods—Acartia tonsa Dana⁵ and Acartia clausi Giesbrecht⁶—have been bred through the first filial generation and beyond.