Deux espèces nouvelles de puces (Siphonaptera : Ctenophthalmidae & Rhopalopsyllidae) du Chili

Siphonaptera of small rodents and marsupials in the Pedra Branca State Park, State of Rio de Janeiro, Brazil Sifonápteros de pequenos roedores e marsupiais do Parque Estadual da Pedra Branca, Estado do Rio de Janeiro, Brasil

In an region of Atlantic Rainforest corresponding to the geopolitical area of the Pedra Branca State Park, Rio de Janeiro, southeastern Brazil, 160 small mammals were captured, of which 64 rodents and 96 marsupials from October 2005 to October 2007. There were collected in these hosts six flea species from three families (Ctenophthalmidae, Rhopalopsyllidae and Pulicidae), totalizing 162 specime...

Phylogenetic overview of the genus Squalius (Actinopterygii, Cyprinidae) in the Iberian Peninsula, with description of two new species

RÉSUMÉ. Révision phylogénétique du genre Squalius (Actinopterygii, Cyprinidae) en péninsule Ibérique, avec description de deux nouvelles espèces. L’utilisation de caractères morphologiques et moléculaires a permis de réévaluer la diversité réelle du genre S q u a l i u s en péninsule Ibérique. Une analyse phylogénétique fondée sur l’étude de séquences complètes du gène mitochondrial cytochrome ...

Nouvelles modifications apportées à la méthode de préparation du vaccin

A molecular phylogeny of fleas (Insecta: Siphonaptera): origins and host associations

Siphonaptera (fleas) is a highly specialized order of holometabolous insects comprising 2500 species placed in 16 families. Despite a long history of extensive work on flea classification and biology, phylogenetic relationships among fleas are virtually unknown. We present the first formal analysis of flea relationships based on a molecular matrix of four loci (18S ribosomal DNA, 28S ribosomal ...

Polygenis (Polygenis) platensis (Jordan & Rothschild) (Siphonaptera: Rhopalopsyllidae, Rhopalopsyllinae), a New Record in Brazil

Polygenis (Polygenis) platensis s. l. (Jordan & Rothschild) is recorded for the first time from Brazil in the municipalities of Capão da Canoa, Tramandaí and Osório, RS. New host records for this flea include Ctenomys flamarioni (Travi) and Ctenomys minutus (De Blainville). Morphological variations were also observed among the flea specimens collected on the same species of host at the same mun...