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Early Larval Development of the Penaeid Shrimp, Trachypenaeus curvirostris (STIMPSON), Reared in the Laboratory

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The eggs and early larvae of the penaeid shrimp Trachypenaeus curvirostris were reared in the laboratory to describe the morphological character and developmental time. Water temperature ranged from 24.5 to 27.0°C, The eggs hatched out as naupliar larva about 11.6 hours after spawning, and changed to protozoeal larva, which passed through 6 naupliar stages. The closely related species T. constrictus has 5 naupliar stages. In comparison with larvae of the genus Penaeus, which is distributed with T. curvirostris in the shallow waters of Japan, the latter is characterized by the point that the nauplius I and II have no ventrolateral setae on the endopod of the 2nd antenna.

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