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Registros recuperados: 8
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Assessment of the decapod crustacean diversity in the Guayana Shield region aiming at conservation decisions Biota Neotropica
Magalhães,Célio; Pereira,Guido.
The current state of knowledge of freshwater decapod crustacean diversity of the Guayana Shield Region is briefly assessed, based upon information gathered from the scientific literature as well as unpublished data from academic theses, technical reports, and carcinological collections. The decapod fauna of the region is presently known to include 64 species and subspecies within six families and 17 genera. Diversity by countries, basins, and rivers is listed, comments on endemic, rare or threatened species are made, and information about relevant taxonomic literature is presented. Seven priority areas for conservation actions concerning crustacean decapods are suggested and related to the 25 priority areas defined by the Fishes and Freshwater Working...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biodiversity; Checklist; Freshwater crabs; Freshwater shrimps; Amazon basin; Orinoco basin.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032007000200013
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Eight new species of the genus Sinopotamon from Jiangxi Province, China (Crustacea, Decapoda, Brachyura, Potamidae) Naturalis
Ai-Yun, Dai; Xian-Min, Zhou; Wei-Dong, Peng.
Fifteen species of freshwater crabs belonging to the genus Sinopotamon are recorded from Jiangxi Province, S.E. China. Eight species are new to science and these are described: S. xiushuiense, S. jiujiangense, S. wanzaiense, S. anyuanense, S. siguqiaoense, S. linhuanense, S. yushanense and S ninggangense. The distribution of all species is discussed.
Tipo: Article / Letter to the editor Palavras-chave: Freshwater crabs; Sinopotamon; Jiangxi Province; China.
Ano: 1995 URL: http://www.repository.naturalis.nl/record/505236
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Foregut morphology of Pseudothelphusidae and Trichodactylidae (Decapoda: Brachyura) from northeastern Pará, Brazil Rev. Bras. Zool.
Alves,Soraya Tatiana M.; Abrunhosa,Fernando A.; Lima,Jô de F..
The gross morphology of foregut was investigated and described in detail for four freshwater crab species: a pseudothelphusid, Fredius reflexifrons (Ortmann, 1897) and three trichodactylids - Sylviocarcinus pictus (H. Milne-Edwards, 1853), Valdivia serrata White, 1847, and Dilocarcinus septemdentatus (Herbst, 1783). In general, the gastric mills of freshwater crabs showed a similar degree of complexity in relation to other marine species of Anomura and Brachyura previously described in the literature. However, significant morphological differences were observed among the analyzed species, as in ossicle numbers, features and connection types. A total of 38 ossicles were described for S. pictus and V. serrata and 37 ossicles for D. septemdentatus and F....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Freshwater crabs; Morphology; Stomach; Amazon region; Neotropic.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702010000200011
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Insular species of Afrotropical freshwater crabs (Crustacea: Decapoda: Brachyura: Potamonautidae and Potamidae) with special reference to Madagascar and the Seychelles Naturalis
Cumberlidge, N..
The evolutionary relationships between island and mainland faunas of the 24 species of insular freshwater crabs in the Afrotropical region are reviewed in the light of phylogenetic studies. Twenty insular species of freshwater crabs are endemic, and four are also found on the neighboring mainland of Africa. The Atlantic Ocean islands of Sherbro, Bioko, Príncipe, and São Tomé support five species of Potamonautidae, while the Western Indian Ocean islands of the Seychelles, Zanzibar, Pemba, Mafia, and Madagascar together have 16 species of Potamonautidae, and Socotra has three species of Potamidae. Disjunct distributions of non-endemic insular species of Afrotropical freshwater crabs with conspecifics on the mainland are the result of past lower sea levels...
Tipo: Article / Letter to the editor Palavras-chave: Freshwater crabs; Afrotropical islands; Madagascar; Seychelles; Socotra; 42.74.
Ano: 2008 URL: http://www.repository.naturalis.nl/record/280474
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Offspring production in three freshwater crab species (Brachyura: Pseudothelphusidae) from the Amazon region and Central America Rev. Bras. Zool.
Wehrtmann,Ingo S.; Magalhães,Célio; Hernáez,Patricio; Mantelatto,Fernando L..
Freshwater crabs are an important component of the fauna of limnic environments, and out of the two true freshwater crab families present in the Neotropics, Pseudothelphusidae is the most diverse. Considering the lack of information regarding reproductive features of neotropical freshwater crabs, we studied, for the first time, the fecundity and the presence of juveniles carried by females of two pseudothelphusids from the Amazon region - Kingsleya latifrons (Randall, 1840) and Kingsleya ytupora Magalhães, 1986 - and one from Central America - Potamocarcinus magnus (Rathbun, 1896). The two Kingsleya species produced relatively few (56-114) and large eggs (1.9-3.7 mm), typical for species with an abbreviated or direct development. Recently produced eggs...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brazil; Costa Rica; Freshwater crabs; Direct development; Fecundity; Parental care.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702010000600019
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On one new genus and three new species of freshwater crabs (Crustacea: Decapoda: Brachyura: Potamidae and Grapsidae) from Lanjak-Entimau, Sarawak, East Malaysia, Borneo Naturalis
Ng, P.K.L..
The freshwater crabs obtained from the Lanjak-Entimau area in Sarawak, East Malaysia, Borneo, are reported upon. One new genus (Ibanum) and two new species of Potamidae (Ibanum aethes and Isolapotamon stuebingi) and a new species of Grapsidae (Geosesarma katibas) are described. The identity of Potamon (Geothelphusa) bicristatum De Man, 1899, orginally described from the upper Kapuas in Kalimantan is also clarified, and is here assigned to the new genus, Ibanum.
Tipo: Article / Letter to the editor Palavras-chave: Crustacea; Decapoda; Brachyura; Potamidae; Grapsidae; Freshwater crabs; Taxonomy; New species; Sarawak; Borneo; 42.74.
Ano: 1995 URL: http://www.repository.naturalis.nl/record/319436
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The freshwater crabs of Ethiopia, northeastern Africa, with the description of a new Potamonautes cave species (Brachyura: Potamonautidae) Naturalis
Cumberlidge, N.; Clark, P.F..
A recent collection of freshwater potamonautid crabs from a newly-explored cave in Ethiopia included a new species of Potamonautes MacLeay, 1838, which is described. The new species is associated with caves but is not troglobitic because it has no special morphological adaptations for life in caves typical of other species of cave-dwelling freshwater crabs. The taxonomic status and biogeographic affinities of other Ethiopian freshwater crab species are discussed. Potamonautes antheus (Colosi, 1920) and P. ignestii (Parisi, 1923) are recognized as valid species, and a key to the species of the country is included. The addition of P. kundudo sp. nov. and the recognition of two previously suppressed taxa raises to six the number of freshwater crab taxa known...
Tipo: Article / Letter to the editor Palavras-chave: Potamonautes kundudo sp. nov.; Potamonautes antheus; Potamonautes ignestii; Freshwater crabs; Mount Kundudo; Potamoidea; 42.74.
Ano: 2012 URL: http://www.repository.naturalis.nl/record/434755
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The systematic and biogeographical status of Fredius reflexifrons (Ortmann, 1897) and Fredius fittkaui (Bott, 1967) (Crustacea: Brachyura: Pseudothelphusidae) from the Amazon and Atlantic Guianas River basins Acta Amazonica
MAGALHÃES,Célio; RODRÍGUEZ,Gilberto.
There is considerable confusion in the literature regarding the systematic position and distribution of two pseudothelphusid crabs originally described as Potamocarcinus reflexifrons Ortmann, 1897 and Potamocarcinus reflexifrons fittkaui Bott, 1967, and now included in the genus Fredius Pretzman, 1965, as F. reflexifrons and F. fittkaui. Study of numerous specimens from recent collections, together with a critical analysis of the data published in the literature, shows that both taxa could be easily separated by gonopodal characters. The two species occupy discrete areas of distribution along the main axis of the Amazon River and in the upper Rio Negro Basin, respectively, with an overlap in the Atlantic Guianas. It is postulated that they originated from...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Pseudothelphusidae; Fredius; Freshwater crabs; Amazon region; Biogeography.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672002000400677
Registros recuperados: 8
Primeira ... 1 ... Última
 

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