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A new species of Pseudoniphargus (Crustacea, Amphipoda) from subterranean water of northeastern Morocco: Historical biogeography and evolutionary aspects Naturalis
Abiari, A. Fakher el; Oulbaz, Z.; Messouli, M.; Coineau, N..
A new species of Pseudoniphargus, P. longiflagellum (Crustacea, Amphipoda) is described from subterranean fresh water of the Riftan region of Morocco. This species is closely related to the group P. ruffoi-P. longipes, which shares several apomorphic characters. The two-step model of colonization and evolution provides an understanding of the origin and the age of this stygobiont. P. longiflagellum is derived from marine ancestors that lived in the coastal groundwater of the Tethyan South-Rifian channel during the Miocene Tortonian period. The regression of this corridor during the late Tortonian period or at the beginning of the Messinian period may have played a major role in the evolutionary history through vicariance.
Tipo: Article / Letter to the editor Palavras-chave: Systematics; Historical biogeography; Crustacea; Groundwater Amphipoda; Pseudoniphargus; Morocco.
Ano: 1999 URL: http://www.repository.naturalis.nl/record/534391
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The fi rst Microcharon (Crustacea, Isopoda, Microparasellidae) from the Moroccan North Saharan Platform. Phylogeny, origin and palaeobiogeography Naturalis
Aït Boughrous, A.; Boulanouar, M.; Yacoubi, M.; Coineau, N..
The interstitial stygobites of the genus Microcharon (Crustacea, Isopoda, Microparasellidae) are highly diversified in Morocco, especially in the High Atlas. A new species from the North Saharan platform is described. Microcharon oubrahimae n. sp. is characterized by the original morphology of the first male pleopod which exhibits a concave inner margin of the distal part and a subdistal position of the armature. From a phylogenetic point of view, M. oubrahimae does not belong to the lineage which includes the Moroccan Atlasian species. In contrast, it belongs to the eastern- Mediterranean group of species. It is related to the species of the group M. orghidani-M. bureschi-M. phlegetonis from Romania and Bulgaria. The two-step model of colonization and...
Tipo: Article / Letter to the editor Palavras-chave: Crustacea; Interstitial isopoda; Microcharon; Systematics; Morocco; Palaeobiogeography; 42.74.
Ano: 2007 URL: http://www.repository.naturalis.nl/record/217423
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Un nouveau Microcharon (Isopoda, Janiroidea) du Maroc — origine et biogéographie historique Naturalis
Boulanouar, M.; Yacoubi, M.; Messouli, M.; Coineau, N..
The interstitial crustacean isopods of the genus Microcharon (Microparasellidae) are relatively well-diversified and widely distributed in Morocco. A new species, M. boutini, is described. The 5-dentate mandibular pars incisiva, the elongated inner lobe of the exopodite, and the reduced armature of the first male pleopod characterize the species. M. boutini n. sp. belongs to the monophyletic messoulii group of species, the most primitive representatives of the genus. The distribution of M. boutini n. sp. covers both the northwestern part of the Jbilet and the nearest adjacent plain, as well as the High Atlas of the Marrakech piedmont. From a historical biogeographic point of view, interstitial ancestral marine populations would have been left in...
Tipo: Article / Letter to the editor Palavras-chave: Taxonomy; Crustacea; Isopoda; Interstitial stygobionts; Microcharon; Morocco; Historical biogeography.
Ano: 1995 URL: http://www.repository.naturalis.nl/record/503904
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Un nouveau Microparasellidae (Crustacé Isopode) du Haut-Atlas; aspects phylogénétiques et biogéographiques Naturalis
Yacoubi-Khebiza, M.; Boulanouar, M.; Coineau, N..
The interstitial stygobiotic isopods of the genus Microcharon (Crustacea) are diversified in Morocco. A new species, M. ourikensis, is described. The new species shows some original characters for this genus: large size, strong elongation in the first male pleopod exopodal inner lobe, 5-dentate mandibular pars incisiva, and 5 spines on the last mandibular palp segment. The species is a member of the Ibero-Maghrebin messoulii group. It is an endemic representative of the Ourika valley groundwater in the Moroccan High Atlas. It derives from a littoral marine ancestor which could have colonized the continental subterranean water during Turonian or Senonian Tethyan regressions.
Tipo: Article / Letter to the editor Palavras-chave: Taxonomy; Biogeography; Crustacea; Interstitial Isopoda; Microcharon; High Atlas; Morocco.
Ano: 1997 URL: http://www.repository.naturalis.nl/record/504225
Registros recuperados: 4
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