Morphological remarks on the peppermint shrimp Lysmata ankeri (Decapoda, Hippolytidae): implications for species identification of the L. wurdemanni complex

Abstract

at least 12 species occur in the western Atlantic (Chace, 1972;Rhyne and Lin, 2006). Several studies in the last decade have provided new information, describing new species and reviewing the geographic distribution of this genus (e.g. Wicksten, 2002a;2002b;Rhyne and Anker, 2007;Baeza and Anker, 2008;Anker et al., 2009;Laubenheimer and Rhyne, 2010 ABSTRACT -This contribution reviews the morphology and the main diagnostic characters of the peppermint shrimp Lysmata ankeri. Individuals were sampled by scuba divers from August 2008 to June 2013 on the subtidal rocky bottom at Couves Island, on the coast of São Paulo State, Brazil. In the laboratory, the individuals were analyzed morphologically, with emphasis on the characters used in the diagnosis of the species; measured as carapace length (CL); and photographed. Seventeen individuals of L. ankeri were analyzed with an average size of 6.9 ± 2.0 mm CL. From the morphological analysis the following variations of the diagnosis were observed: five teeth on the dorsal margin of the rostrum, in the diagnosis this was 6-8; five spines on the flexor margin of the dactyli of pereiopods 2-4, in the diagnosis this was 3-4. The records of this study extend the knowledge of the variation of some morphological characteristics for this species, resulting in an overlap among the species of the Lysmata wurdemanni complex.

New records of caridean shrimps, Lysmata ankeri and L. cf. intermedia, from southeast coast of Brazil

“…This expansion of the variation limits of the number of teeth on the dorsal margin of the rostrum and the number of spines on the flexor margin of the dactyli in L. ankeri sampled in this study is discussed in Alves et al, 2015). Remarks: The two specimens were found living under a large rocky plate, occurring syntopically with a large group (more than 30 individuals) of L. ankeri.…”

Nutritional vulnerability of early zoeal stages of the ornamental shrimp Lysmata ankeri (Decapoda: Caridea)

“…According to Rhyne et al (2017), Lysmata ankeri Rhyne and Lin, 2006 is on the list top 20 live aquarium invertebrate species imported into the US by year, which represents about 2% of import volume (individuals as % total). Lysmata ankeri is found mainly in the United States, Florida, the Caribbean Sea, Haiti, Venezuela, Panama, Suriname, French Guiana, and Brazil (Rhyne and Lin, 2006;Alves et al, 2015;Barros-Alves et al, 2016). This species inhabits in coral reefs and rocky shores and are usually found at depths ranging from 5 to 15 m (Rhyne and Lin, 2006;Alves et al, 2015;Barros-Alves et al, 2016).…”

“…Lysmata ankeri is found mainly in the United States, Florida, the Caribbean Sea, Haiti, Venezuela, Panama, Suriname, French Guiana, and Brazil (Rhyne and Lin, 2006; Alves et al ., 2015; Barros-Alves et al ., 2016). This species inhabits in coral reefs and rocky shores and are usually found at depths ranging from 5 to 15 m (Rhyne and Lin, 2006; Alves et al ., 2015; Barros-Alves et al ., 2016). According to Almeida et al .…”

First record of exotic Lysmatid shrimp Lysmata vittata (Stimpson, 1860) (Decapoda: Caridea: Lysmatidae) from the Egyptian Mediterranean coast

“…The genus Lysmata Risso, 1816, a member of the family Lysmatidae Dana, 1852, contains more than 48 described species (e.g., Anker et al, 2009;De Grave & Fransen, 2011;De Grave et al, 2014;WoRMS, http:// www.marinespecies.org/aphia.php?p=taxlist, March 30, 2018), including the species previously placed in Hippolysmata Stimpson, 1860. There is a rather confusing synonymy of several taxa, based on variations of some morphological characteristics (Chace, 1997;d' Udekem d'Acoz, 2000;Soledade et al, 2013;Alves et al, 2015), as well as portraying new species (e.g. Zhibin & Xinzheng, 2016;Prakash & Baeza, 2017).…”