The embryonic development of attached and isolated eggs ofCarcinus maenas

Publisher Website
Google Scholar
Abstract
Eggs of the shore crab, Carcinus maenas, were reared in the laboratory both attached to and in isolation from the female. With continuous agitation the isolated eggs showed better survival and faster embryonic development than attached eggs under comparable conditions. Embryonic development was successful at temperatures from 11 to 25°C. and for attached eggs the development time decreased with temperature according to the equation: D = 20326 (T + 3.3)−2.09. At all temperatures development was slower than for a comparable study at Plymouth by Wear [8]. Isolated eggs were reared under a wide range of salinities, and appreciable survival beyond the prezoea occurred from 26‰ to 39‰.