SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

The cladoceran Kurzia polyspina Hudec, 2000 (Anomopoda, Chydoridae) was found associated with Eichhornia Kunth, 1843 (Pontederiaceae) roots in Paranoá Lake, Brasília. It represents the first record of this species in Brazil and in the Southern Hemisphere. Comments on Kurzia Dybowski & Grochowski, 1894 South American records are included.

A cladistic analysis of the genera of Macrothricidae Norman & Brady (Crustacea, Cladocera, Radopoda)

Palavras-chave: Anomopoda; Chydoridae; Kurzia polyspina; First record.

Ano: 2002

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000100027

A cladistic analysis of the genera of the Macrothricidae (Crustacea, Cladocera, Radopoda) was performed based on 36 morphological characters, and including 15 terminal taxa (three as outgroups). The single tree obtained from this analysis supported the monophyly of Macrothricidae and Macrothricinae. The group called as "non-Macrothricinae" was indicated as paraphyletic. Neothricidae was also not supported.

Ciclomorfose em Bosmina (Crustacea, Cladocera) no Lago Paranoá, Brasília

Palavras-chave: Anomopoda; Macrothricinae; Macrothricoidea; Phylogeny.

Ano: 2005

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752005000300034

In order to verify the existence of seasonal variations in morphology of Bosmina longirostris and Bosmina hagmanni, samples were taken from Paranoá Lake (Brasília, DF) during 1983. Body length and breadth, antennule, mucro and eye diameter were measured. Alometry rates were also calculated. It was verified that throughout the year both Bosmina species presented variation involving the five measures. The measures, except the antennule and mucro of B. longirostris, depend, at least partially, on the size of the individual and, therefore, on the age structure of the population. The antennule and mucro variations of B. hagmanni were strongly related to alometry rates. For B. longirostris the antennule and mucro variations appeared to be related to phenomena in...

Phytophilous cladocerans (Crustacea, Anomopoda and Ctenopoda) from Paranã River Valley, Goiás, Brazil

Ano: 1989

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751989000100006

A rapid assessment survey identified 39 phytophilous cladocerans species from littoral zones of rivers, permanent and temporary lagoons, and swamps of the Paranã River Valley, Goiás, Brazil, 22 are registered for the first time in Central Brazil. Aspects of the taxonomy of some of these species are discussed. Cluster analysis (UPGMA) revealed two phytophilous cladoceran assemblages, characterized by higher or lower richness and relative abundance of species of the families Daphniidae and Moinidae (filter feeders), in comparison with the dominant families Chydoridae and Macrothricidae (scraper feeders).