Abbreviated Development of Uca subcylindrica (Stimpson, 1859) (Crustacea, Decapoda, Ocypodidae) Reared in the Laboratory

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Abstract
The development of U. subcylindrica, a fiddler crab endemic to southern Texas [USA] and northeastern Mexico, is described on the basis of laboratory-reared larvae. Females produce relatively few (.hivin.x = 580), large (.hivin.x = 1.06 mm) eggs. The eggs hatch as late zoeae in an advanced developmental condition. This stage is followed within half a day by a similar zoeal stage. Within as little as 2.5 days, most zoeae metamorphose to advanced megalopae. Molt to 1st crab is completed for most by 8 days. The larval development of U. subcylindrica is abbreviated, both ecdysially and durationally, an adaptation which enables this species to take advantage of periodic rainfall in a semiarid environment.

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