Early larval development of the rock shrimps Sicyonia dorsalis Kingsley, 1878 and S. typica (Boeck, 1864) (Dendrobranchiata) with remarks of larval morphology of Sicyoniidae Ortmann, 1898

Abstract The aim of this study was to describe and illustrate the early larval stages, i.e., complete naupliar development first protozoea (PZI) Sicyonia dorsalis S. typica obtained under laboratory conditions. We also provide remarks from a comparative analysis morphology these stages among representatives genus furnish morphological characteristics distinguish them another penaeoidean in plankton. Our results indicate that is composed five (NI NV). No differences were found PZI two studied species, even though they are considered phylogenetically distant into genus. suspect arise later during ontogenetic development. comparisons with descriptions congeners revealed very similar, nevertheless, some observed. As illustrated here, there clear need new group generalizations conclusions patterns at point be made caution, because data still insufficient number species available.