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| label
| - Messouli <i>et al.</i> (2018)
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| dct:title
| - Messouli <i>et al.</i> (2018)
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| dct:abstract
| - The Salentinellidae family is composed of exclusively stygobiontic species. Until now, the Salentinellidae was composed of two genera: Salentinella Ruffo, 1947, with 15 species and subspecies, and Parasalentinella Bou, 1971, a monotypic genus. The phylogenetic relationships within this group have never been analyzed, although several authors suggested that the strictly marine Liljeborgidae should be the sister group of the Salentinellidae. In this study we describe two new species and propose a revision of the family, a discussion on both some previously known characters and new observations based on morphology, providing better hypotheses for amphipods that are the most closely related to Salentinellidae. The family is mainly characterized by the lack of oostegites in the female, robust antennule with a flat and 1-segmented accessory flagellum, and a flagellum provided with long aesthetascs (more numerous in the male); uropod 1 is armed with one ecdysial spine on prepeduncle and lacks lateral and basofacial spines. The present phylogenetic analysis has been carried out in two parts. We first looked for the most probable sister group of the family (outgroup analysis). We performed a 70% majority-rule consensus tree based on 100 Branch and Bound bootstrap replicates using PAUP programme and the Salentinellidae appeared as the sister group of the Lysianassid clade. The second analysis (ingroup analysis) using the marine amphipods of the Lysianassoid-stegocephaloid complex as the outgroup resulted in three lineages: the two previously known genera Salentinella and Parasalentinella, and another Glade for which a new genus was erected. The species of the angelieri complex require further revision: S. juberthieae, previously considered a synonym of S. angelieri, is a valid species; in contrast we confirm that S. prognatha is a synonym of S. petiti. The subspecies S. angelieri longispina appears to be a valid species. The Salentinellidae live in fresh or brackish ground waters. They occur in the western circum Mediterranean area. Recent discoveries from Morocco enlarge the distribution area of Salentinella both in the northern and southern parts of the High Atlas, and in sites located at about 400 km from the ocean. The ancestor of this species settled in subterranean freshwaters of the southern distribution area before the Atlasic orogenesis which began in the early Cenozoic period. Therefore, the colonization of Moroccan ground waters by salentinellids is very ancient and probably occurred at the latest during the Cretaceous.
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| bibo:abstract
| - The Salentinellidae family is composed of exclusively stygobiontic species. Until now, the Salentinellidae was composed of two genera: Salentinella Ruffo, 1947, with 15 species and subspecies, and Parasalentinella Bou, 1971, a monotypic genus. The phylogenetic relationships within this group have never been analyzed, although several authors suggested that the strictly marine Liljeborgidae should be the sister group of the Salentinellidae. In this study we describe two new species and propose a revision of the family, a discussion on both some previously known characters and new observations based on morphology, providing better hypotheses for amphipods that are the most closely related to Salentinellidae. The family is mainly characterized by the lack of oostegites in the female, robust antennule with a flat and 1-segmented accessory flagellum, and a flagellum provided with long aesthetascs (more numerous in the male); uropod 1 is armed with one ecdysial spine on prepeduncle and lacks lateral and basofacial spines. The present phylogenetic analysis has been carried out in two parts. We first looked for the most probable sister group of the family (outgroup analysis). We performed a 70% majority-rule consensus tree based on 100 Branch and Bound bootstrap replicates using PAUP programme and the Salentinellidae appeared as the sister group of the Lysianassid clade. The second analysis (ingroup analysis) using the marine amphipods of the Lysianassoid-stegocephaloid complex as the outgroup resulted in three lineages: the two previously known genera Salentinella and Parasalentinella, and another Glade for which a new genus was erected. The species of the angelieri complex require further revision: S. juberthieae, previously considered a synonym of S. angelieri, is a valid species; in contrast we confirm that S. prognatha is a synonym of S. petiti. The subspecies S. angelieri longispina appears to be a valid species. The Salentinellidae live in fresh or brackish ground waters. They occur in the western circum Mediterranean area. Recent discoveries from Morocco enlarge the distribution area of Salentinella both in the northern and southern parts of the High Atlas, and in sites located at about 400 km from the ocean. The ancestor of this species settled in subterranean freshwaters of the southern distribution area before the Atlasic orogenesis which began in the early Cenozoic period. Therefore, the colonization of Moroccan ground waters by salentinellids is very ancient and probably occurred at the latest during the Cretaceous.
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| dct:issued
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| dct:bibliographicCitation
| - Messouli, M., Coineau, N. & Boutin, C. 2018. Revision, phylogeny and biogeography of the subterranean Amphipod Salentinellidae (Crustacea), with description of two genera and two species. <em>Bulletin de la Société d'Histoire Naturelle de Toulouse</em>, 154: 71-103.
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