Revisão taxonômica dos camarões de água doce (Crustacea: Decapoda: Palaemonidae, Sergestidae) da Amazônia Peruana

Abstract

Foi realizada uma revisão taxonômica das espécies de camarões de água doce da Amazônia peruana que abrangeu oito espécies da família Palaemonidae e uma espécie da família Sergestidae. São descritas duas novas espécies do gênero Pseudopalaemon e feitos os primeiros registros de Euryrhynchus amazoniensis Tiefenbacher, 1978, Macrobrachium jelskii Miers, 1877 e Palaemonetes ivonicus Holthuis, 1950 para o Peru. São fornecidos chave de identificação, dados distribucionais e ilustrações para as espécies estudadas.

Freshwater shrimps (Crustacea, Decapoda, Caridea, Dendrobranchiata) from Roraima, Brazil: species composition, distribution, and new records

“…Remarks. The morphology of our specimens agrees quite well with the description provided by Kensley and Walker (1982), García-Dávila and Magalhães (2003) and Melo (2003). No significative intraspecific variability was noticed.…”

“…The morphology of our specimens agrees quite well with the description provided by Holthuis (1952Holthuis ( , 1966, García-Dávila and Magalhães (2003), and Melo (2003). In juveniles the inner pair of posterolateral spines can exceed the tip of telson, which still shows a rather distinct posterior margin.…”

“…Generic and specific identifications were made according to the morphological descriptions and keys in Holthuis (1951Holthuis ( , 1952, Omori (1975), Tiefenbacher (1978), Kensley and Walker (1982), D'Incao and Martins (2000), Melo (2003), and García-Dávila and Magalhães (2004), and by comparison with identified material of the INPA collection. The "identification characters" listed under each species apply for adult specimens; these characters must be considered with great care regarding juveniles or subadults specimens.…”

“…Despite the number of studies addressing the taxonomy and geographic distribution of the Amazonian freshwater shrimps (Holthuis 1951, 1952, 1966, Omori 1975, Tiefenbacher 1978, Kensley and Walker 1982, D'Incao and Martins 2000, Magalhães 2002, Melo 2003, García-Dávila and Magalhães 2004, Pileggi et al 2013, Pimentel and Magalhães 2014, the diversity of these decapods in the state of Roraima is still poorly known in the carcinological literature. Ramos-Porto and Coelho (1998) made the first mention of a species of shrimp in Roraima by simply listing the state in the geographical distribution of Macrobrachium nattereri (Heller, 1862) in a faunistic catalogue.…”

HABITAT CHOICE BEHAVIOR IN Macrobrachium brasiliense (HELLER, 1862) (DECAPODA, PALAEMONIDAE) UNDER LABORATORY CONDITIONS

“…Recently, new ecological surveys have reported for the first time the occurrence of M. brasiliense in the states of Amapá, Tocantins, and Mato Grosso do Sul (Pileggi et al 2013). Given this wide geographic distribution, it is important to highlight that most of the studies which have been conducted to date involve species distribution and taxonomic reviews (Kensley & Walker 1982, Coelho & Ramos-Porto 1984, García-Dávila & Magalhães 2003, Pileggi & Mantelatto 2012.…”