Larval Development of Elamena (Trigonoplax) Cimex Kemp, 1915 in the Laboratory: The Most Unusual Larvae known in the Brachyura (Crustacea: Decapoda)
Abstract:Larval stages of the hymenosomatid crab Elamena (Trigonoplax) cimex Kemp, 1915 were reared to the first crab instar under laboratory culture conditions of 25 ± 10% salinity, 27 ± 1°C temperature and 12/12 h light/dark. The first crab instar was obtained after three zoeal stages and the minimum duration for completion of larval development is 10 days. There was no megalopa stage. The three zoeal and first juvenile stages are described and compared with other known descriptions of Elamena larvae. A carapace formed of three triangular plates (two more or less equal postero-lateral plates and one antero-medial plate) in all zoeal stages is reported among decapod larvae for the first time.
Document Type: Research Article
Publication date: September 1, 1988
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