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image of Journal of Crustacean Biology

ABSTRACT Morphometric studies were carried out as part of resource assessment surveys on deepwater pandalid shrimps in both the northern and southern tropical Pacific Ocean. Previous works have suggested that pandalid shrimps, including those of some tropical species, are typically protandrous hermaphrodites. In this study, however, measurements of certain male secondary sexual characteristics were positively correlated with shrimp size. There was no evidence of degeneration of these characteristics in larger individuals as would be expected with protandrous hermaphrodites. We conclude that shrimps of the tropical pandalid species examined are dioecious and that sex reversal does not occur.

Affiliations: 1: (MGK) The Australian Maritime College, P.O. Box 986, Launceston, Tasmania 7250, Australia; 2: (RBM) National Marine Fisheries Service, Honolulu Laboratory, P.O. Box 3830, Honolulu, Hawaii 96812


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