Sistemática do gênero Argyrodiaptomus Brehm, 1933 (Crustacea: Copepoda: Diaptomidae).

AUTOR(ES)
FONTE

IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia

DATA DE PUBLICAÇÃO

09/07/2006

RESUMO

The genus Argyrodiaptomus was studied with the description of a new specie and comparison with the other species. 369 items were listed using the DELTA program for the production of descriptions, identification keys and a characters matrix. 72 characters were more informative, and the polarization of them were made a priori. Notodiaptomus deitersi e Aspinus acicularis were used as outer groups. The matrix was converted from the DELTA format to HENNIG86 and Nexus formats. Then the programs PAUP and Winclada were used to process the matrix with a heuristic search for the most parsimonious tree. The analysis resulted in one most parsimonious tree, with the following phylogenetic statistic indexes: (L)=109, (CI)=0.954 and (RI)=0,954. The monophily of the group was sustained by 23 synapomorphies, and the resulting phylogenetic relationships between species of Argyrodiaptomus are: (((A. azevedoi, A. robertsonae, A. nhumirim e A. sp.) ((A. furcatus, A. macrochaetus) (A. argentinus, A. denticulatus))).

ASSUNTO(S)

taxonomia de grupos recentes calanoida delta sistemática filogenética região neotropical. zoologia

ACESSO AO ARTIGO

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