Larval development of Hexapanopeus paulensis Rathbun, 1930 (Crustacea, Brachyura, Xanthidae) under laboratory conditions

Abstract

Four zoeal stages and one megalopa stage of Hexapanopeus paulensis Rathbun, 1930 were obtained from eggs of ovigerous females from the northern coast of São Paulo State, Brazil. The experiments were performed in a climatically controlled room at 24 ±1 ºC at a salinity of 34.5%, and the animals were fed with newly hatched Artemia salina nauplii. All larval stages are illustrated and described in detail. The complete larval development consists of 4 zoeal stages and 1 megalopal stage. The main morphological characters that allow the identification of the zoeae and megalopa of H. paulensis are analyzed with respect to the other species of Xanthidae's family from southern and southeastern Brazilian coast

Description of Laboratory-Reared First Zoea of Luniella spinipes (Heller, 1861) (Brachyura: Xanthidae Chlorodiellinae) Collected from the Central Red Sea, Saudi Arabia

“…Xanthidae larvae were divided to seven groups based on the characters of antenna and some other appendages (Rice, 1980;Martin, 1984;Fransozo et al, 1991). Of these groups, the larvae of Chlorodiinae were included to group I (Table 1).…”

Morphology of the First Zoeal Stage of Platypodiella spectabilis (Herbst, 1794) (Decapoda, Brachyura, Xanthidae) Obtained in the Laboratory

“…Since that time several other descriptions of western Atlantic xanthid larvae have appeared (seeMartin et al 1985 (Gibbes, 1850); Montú et al 1988 for Panopeus austrobesus Williams, 1983;Martin 1988 for a review of xanthid larvae and information on phyletic utility of the megalopa stage; Bakker et al 1989 for Hexapanopeus schmitti Rathbun, 1930;Fransozo et al 1990 for Hexapanopeus paulensis Rathbun, 1930;Messerknecht et al 1991 for Eurytium limosum [previously described by Kurata et al 1981]; and Vieira 1999 for Hexapanopeus caribbaeus (Stimpson, 1871).…”

Ecological distribution and population features of Hexapanopeus paulensis Rathbun, 1930 (Crustacea: Decapoda: Xanthoidea) caught by bottom trawling in the southeastern coast of Brazil: implications for its population structure

“…The captured species (bycatch) are discarded indiscriminately, including Hexapanopeus paulensis Rathbun, 1930, a crab poorly studied with only two previous studies: Fransozo et al (1991) and Silva et al (2014) on the larval development and morphometric analysis, respectively.…”