Abstract
Mating behavior and relative fecundity, egg weight, and egg volume were investigated in the banded coral shrimp Stenopus hispidus. The effect of fluctuating temperature (4-6?C and 1.5-2?C difference between day and night) on fecundity was also tested. The relative fecundity was 1,229 ? 467 (mean ? SD) eggs/brood/g of female (wet body weight, WBW); egg volume was 0.0628 ? 0.0050 mm3 (mean ? SD); and dry egg weight was 35.1 ? 2.9 jug/egg (mean ? SD). Linear relationship between total length of the shrimp and relative fecundity was significant (P = 0.01), and there was a significant negative relationship between egg volume and relative fecundity (P = 0.03). High temperature fluctuation (4-6?C) resulted in lower dry egg weight (P = 0.0079). Mating behavior in Stenopus hispidus is described for the first time. It occurs in the following sequence: antennule contact, erection of female body, grasping, mating, and spawning. Females can mate successfully within 24 h after molting. Cleaner shrimps remove and consume parasites, injured tissue, and possibly considerable food particles from fishes, such as the white-spotted moray and blue tang in coral reef systems (Limbaugh et al., 1961; Jonasson, 1987), and thus play a vital role in the system. Because of their colorful body and the relative ease with which they can be maintained in a marine aquarium environment, adult cleaner shrimps are popular in the marine aquarium industry. However, removal of cleaner shrimps from the natural environment will result in a reduction of reef fish abun
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