Morphology and DNA analyses reveal a new cryptic snapping shrimp of the Alpheus heterochaelis Say, 1818 (Decapoda: Alpheidae) species complex from the western Atlantic

Autor(es)

Almeida, Alexandre O. ^[1] ; Terossi, Mariana ^[2] ; Mantelatto, Fernando L. ^[2]

Afiliação do(s) autor(es)

^[1] Santa Cruz State Univ UESC, Dept Biol Sci, BR-45662900 Ilheus, BA - Brazil

^[2] Univ Sao Paulo, LBSC, Dept Biol, Grad Program Comparat Biol, Fac Philosophy Sci & Letters Ribeirao Preto FFCLR, BR-14040901 Ribeirao Preto, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: ZOOSYSTEMA; v. 36, n. 1, p. 53-71, 2014.
• Citações Web of Science: 18

Resumo

Previous evidence regarding morphology led us to examine an exhaustive set of specimens assigned to Alpheus heterochaelis Say, 1818 and closely allied species, in order to test for the existence of possible cryptic taxa. The analysis of material assignable to this species from the states of Para, Bahia and Sao Paulo in Brazil, and from Venezuela and Colombia revealed minor morphological differences between these specimens and others that could be confidently identified as A. heterochaelis from the eastern USA coast and the Gulf of Mexico, such as the absence of spiniform setae on the ischium of the fifth pereiopods (vs present in A. heterochaelis s.s.). Additionally, genetic analysis using the ribosomal 16S subunit also indicated levels of genetic difference supporting the existence of a cryptic species and revealing that A. heterochaelis is, in fact, a species complex. Thus, a new species, A. petronioi n. sp. is described and illustrated for the material from northern South America and Brazil. The new species is also compared with other, similar species of Alp h eus Fabricius, 1798 in terms of morphology and DNA sequences in a phylogenetic context. (AU)

• Processo FAPESP: 09/54931-0 - Melhoria e capacitação das coleções científicas do Departamento de Biologia da Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo
• Beneficiário: Carlos Alberto Garofalo
• Modalidade de apoio: Auxílio à Pesquisa - Programa Infraestrutura - Acervos biológicos
• Processo FAPESP: 10/50188-8 - Crustáceos decápodes: multidisciplinaridade na caracterização da biodiversidade marinha do estado de São Paulo (taxonomia, espermiotaxonomia, biologia molecular e dinâmica populacional) (Biodiversidade Marinha)
• Beneficiário: Fernando Luis Medina Mantelatto
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Temático