Publicação: Redescription of Notarius grandicassis and Notarius parmocassis (Siluriformes; Ariidae), with insights into morphological plasticity and evidence of incipient speciation
Carregando...
Arquivos
Data
Orientador
Coorientador
Pós-graduação
Curso de graduação
Título da Revista
ISSN da Revista
Título de Volume
Editor
Tipo
Artigo
Direito de acesso
Acesso aberto
Resumo
The Thomas sea catfish is characterized by a highly variable parietosupraoccipital process, which has been recognized as intraspecific variation or phenotypic plasticity. On the basis of this variation, three nominal species have been described, with two of them currently considered to be junior synonyms. Here, the Notarius grandicassis species complex is reviewed, considering the geographic variation of its morphological traits. Notarius grandicassis from north-eastern South America, and Notarius parmocassis, from eastern and southern Brazil, are redescribed as distinct evolutionary units, even though they are not differentiated by partial sequences of the mitochondrial genes CytB and ATPase 8/6. This condition is interpreted as a consequence of the recent evolutionary history of these species, which are found in distinct geographic areas with different environmental conditions.
Descrição
Palavras-chave
Atlantic South America, incipient speciation, morphological plasticity, Notarius grandicassis, Notarius parmocassis
Idioma
Inglês
Como citar
Systematics and Biodiversity, v. 15, n. 3, p. 274-289, 2017.
