We examined the breeding characteristics of Kinbergonuphis simoni (Santos, Day and Rice): i.e., the number of genital segments, fecundity, proliferation of oocytes, brooding activity and recruitment of juveniles. Breeding of the subtropical Kinbergonuphis simoni is semicontinuous
and strongly seasonal extending from October to June with peaks of brooding in the spring and fall and a cessation in summer. Breeding is not well synchronized. Only 4–43% of females brood at any given time.
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