SciELO - Scientific Electronic Library Online

 
vol.51 issue5Temporal expression pattern of the insulin-like growth factor II and fibroblast growth factor transcripts in avian embryogenesisGeneralized lineal models for the analysis of binary data from propagation experiments of Brazilian orchids author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Brazilian Archives of Biology and Technology

Print version ISSN 1516-8913

Abstract

VENTURA, Robson et al. Duration of the pre-settlement period of the mangrove crab Ucides cordatus (Decapoda: Ocypodidae) under laboratory conditions. Braz. arch. biol. technol. [online]. 2008, vol.51, n.5, pp. 957-962. ISSN 1516-8913.  http://dx.doi.org/10.1590/S1516-89132008000500012.

The goal of the present study was to determine the most appropriate time to release the immatures of Ucides cordatus (Linnaeus) produced in the laboratory into the natural environments. Specifically, the time when the megalopae sought the mangrove sediment to excavate the burrows was determined, as well as the time necessary for their metamorphosis into the first juvenile stage. Results indicated that the megalopae of U. cordatus reared in the laboratory took three to ten days (median = 6) after their molt to excavated burrows in the sediment. The average time for the megalopae to molt into juveniles was 12.6 days (SD = 2.3).

Keywords : Ucides cordatus; restocking; larval rearing; settlement; megalopae; juvenile.

        · abstract in Portuguese     · text in English     · pdf in English