Littlewood, D. T.
Author Affiliation, Ana.
Life Sciences; Faculty of Pure and Applied Sciences
Mortality and predation of raft grown mangrove oysters in Jamaica
Caribbean journal of science
Date of Publication
Mortality and predation of commercially cultivated mangrove oysters, Crassostrea rhizophorae (Guilding), were monitored on a commercially operated raft during a 100-day growth period from initial stocking to the beginning of selective harvesting. Data were collected and expressed relative to collector position. There was no consistent bias in mortality or predation with respect to position of an oyster collector relative to the outer edge of the raft. Similarly, mortality was not affected by the direction of prevailing tidal or fluvial currents. Mortality exceeded 45% during the 100-day period. The porcupinefish, Diodon hystrix L., accounted for 30% of the mortality, and a predatory flatworm, Stylochus (Stylochus) frontalis Verrill, was recorded at a low but steady rate throughout the study. At least 50% of the mortality remained unexplained.....