A penaeid postlarval character of taxonomic value.
Zamora, G., Jr.
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The presence of spines on the dorsal carina of the sixth abdominal segment distiguishes postlarval brown shrimp (Penaeus aztecus) and pink shrimp (P. duorarum) from postlarval white shrimp (P. setiferus), which lack these spines. The spine character was validated by examination of postlarvae of known parentage- 51 brown, 53 pink, and 99 white shrimp, 5 to 25 mm long.