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Reproduction laboratory culture and growth of strombus gigas strombus costatus and strombus pugilus in los roques venezuela



Reproduction laboratory culture and growth of strombus gigas strombus costatus and strombus pugilus in los roques venezuela



Bulletin of Marine Science 27(4): 668-680



Egg masses of S. gigas, S. costatus and S. pugilus were gathered from 3-18 m depths in the western part of the Los Reques Archipelago, Venezuela. S. gigas spawns from early July through mid-Nov., S. costatus begins spawning in Nov., and continues until May, and S. pugilus egg masses were first discovered on March 29. Eggs were hatched in the laboratory and veligers fed enriched natural cultures of phytoplankton. Juveniles were fed various species of algae which grew naturally on the sides of the tanks, plus algae growing on rocks, which were introduced into the tanks. Preliminary growth data show S. gigas reaching a length of 31.7 mm in 171 days after hatching. After 175 days, S. costatus reached 42.7 mm. S. pugilus attained a mean length of 20.9 mm after 121 days. Mariculture potential and some aspects of the ecology of the 3 spp., especially the juveniles, are discussed.

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