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	Provedor de dados Naturalis (2) Autor Magniez, Guy (2) Afonso, Odette (1) Henry, Jean-Paul (1) Palavra-chave Active expansion (2) Alluvial channels (1) Ancient and quaternary settlements (1) Bragasellus (1) Douro (1) Ebro (1) Guadalquivir and Garonne Rivers (1) Iberian Peninsula (1) New species (1) Paleobiogeography (1) Recent alluvial deposits (1) Spanish groundwaters (1) Stenasellus virei (1) Stygobionts (1) Superspecies (1) Taxonomy (1) Thalassoid stygobites (1) Zoogeography (1) Mais... Tipo do documento Article / Letter to the editor (2) Ano 1999 (1) 1996 (1) País Netherlands (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Isopodes aselloïdes stygobies d’Espagne, IV – Stenasellidae: taxonomie, histoire évolutive et biogéographie Naturalis Magniez, Guy. The entire family Stenasellidae Dudich, 1924 is composed of ancient stygobitic strains sharing a thalassoid and thermophilic origin. Its presence in Europe is dependent on two factors, the permanent existence of emerged continental shields during long geological periods (at least Tertiary + Quaternary), and its conservation in favourable areas during the different glacial crises. The iberian peninsula seems to have been the most suitable european region for the survival of this stygofauna. Some 119 samples from 116 different localities -scattered over 19 Spanish provinces- have been studied. All aquitanian and iberian stenasellids belong to the traditional genus Stenasellus Dollfus, 1897. We must notice that the stenasellids seem to be absent in the betic... Tipo: Article / Letter to the editor Palavras-chave: Active expansion; Alluvial channels; Ancient and quaternary settlements; Douro; Ebro; Guadalquivir and Garonne Rivers; Paleobiogeography; Spanish groundwaters; Superspecies; Stenasellus virei; Thalassoid stygobites. Ano: 1999 URL: http://www.repository.naturalis.nl/record/505100 Nouvelles données sur le genre Bragasellus (Crustacea: Isopoda: Asellidae) Naturalis Afonso, Odette; Henry, Jean-Paul; Magniez, Guy. From now on, the genus Bragasellus Henry & Magniez, 1968 includes 2 oculated and 17 stygobiotic species. As a natural and monophyletic taxonomic unit, we consider it a good genus. Its original area corresponds to the north-west quarter of the Iberian Peninsula. Secondarily, this area has extended eastward, using mainly the alluvial channels of hydrographic systems (Ríos Douro + Ebro and tributaries), finally reaching the underground waters of several Mediterranean rivers. This active expansion is exclusively due to the migration of two stygobiotic sibling species: B. lagari Henry & Magniez, 1973 towards the high basin of the Río Tajo, then downstream to the basins of the Ríos Jucar and Turia (Prov. Valencia); and B. lagarioides n. sp., downstream... Tipo: Article / Letter to the editor Palavras-chave: Bragasellus; Stygobionts; Active expansion; Recent alluvial deposits; Taxonomy; New species; Zoogeography; Iberian Peninsula. Ano: 1996 URL: http://www.repository.naturalis.nl/record/504446 Registros recuperados: 2 Primeira ... 1 ... Última

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