Abstract

[The effect of temperature on the postembryonic development of Argulus foliaceus (L.) has been examined. Growth, interval, and frequency of moulting are proportional. The shorter the interval of moulting and the larger the growth with successive moults, the larger is the rate of growth. The growth of A. foliaceus is influenced by temperature. In the examined range (16°-28° C), growth increases with higher temperatures. This relation is not linear. Differences between the sexes do, if at all, only appear after maturity. The relative rate of growth per moult does not depend on temperature an only a little so on sex: the stature of the animal is decisive in this respect. The chronological order of the postembryonic moultings has been determined., The effect of temperature on the postembryonic development of Argulus foliaceus (L.) has been examined. Growth, interval, and frequency of moulting are proportional. The shorter the interval of moulting and the larger the growth with successive moults, the larger is the rate of growth. The growth of A. foliaceus is influenced by temperature. In the examined range (16°-28° C), growth increases with higher temperatures. This relation is not linear. Differences between the sexes do, if at all, only appear after maturity. The relative rate of growth per moult does not depend on temperature an only a little so on sex: the stature of the animal is decisive in this respect. The chronological order of the postembryonic moultings has been determined.]

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