Water Renewal in Reservoirs, and its Relation to Body Size and egg Numbers in Copepods

Abstract

In a study of four species of centropagid copepods, particularly Boeckella minuta S ars, occurring in south-east Queensland, Australia, body length was found to correlate with the rate of water renewal in the reservoir. R avera & T onolli's explanation for interpopulational differences in lengths of copepods has thus been confirmed. There was also a positive correlation between body length and egg number in ovigerous females. Sex ratio (females/males) increased with the rate of water renewal, this providing for relatively more females to be present when population numbers were smaller. © 1968 Dr. W. Junk Publishers.