@article {5929, title = {Resurrection of Caridina natalensis De Man, 1908 (Crustacea: Decapoda: Atyidae) in the South Western Indian Ocean}, journal = {Zootaxa}, volume = {4543}, year = {2019}, pages = {375-387}, abstract = {

Numerous specimens of a freshwater shrimp with small eggs belonging to the Caridina nilotica complex collected in the South Western Indian Ocean were studied and compared with recent and old collection specimens genetically (16S mito-chondrial analysis for recent and type specimens) and morphologically. The results revealed that, in the Indian Ocean, what has been identified by several authors under various species names of the complex C. nilotica, was in fact C. natal-ensis De Man, 1908. This valid species is re-described and compared with closely related species, often confused with it in this area: C. brachydactyla De Man, 1908, C. brevidactyla Roux, 1920, C. gracilipes De Man, 1892 and C. longirostris H. Milne Edwards, 1837.

}, keywords = {16S, Caridina, Comoros, Integrative taxonomy, Madagascar, Mayotte, morphology, Seychelles, South Africa}, author = {de Mazancourt, Valentin and Mlambo, MC and Castelin, Magalie and Renneville, C and Marquet, G{\'e}rard and Philippe Keith} } @article {6040, title = {Revision of freshwater shrimps belonging to Caridina weberi complex (Crustacea: Decapoda: Atyidae) from Polynesia with discussion on their biogeography}, journal = {Journal of Natural History}, volume = {53}, year = {2019}, pages = {815{\textendash}847}, abstract = {

Caridina weberi, an emblematic species of the {\textquoteleft}C. weberi complex{\textquoteright}, was described by De Man in 1892 from different localities in Indonesia. Until now, this species was thought to have a wide distribution in Polynesia. Numerous specimens identified as C. weberi were collected recently from various Polynesian islands. In the context of integrative taxonomy, they were morphologically and genetically studied. Three new species allied to C. weberi are here described: C. marquesensis n. sp., C. futunensis n. sp. and C. tupaia n. sp. The occurrence of C. rapaensis, another species part of the {\textquoteleft}C. weberi{\textquoteright} complex is confirmed. Descriptions or redescription of these species are given as well as their geographical and ecological distributions. The position of these species in the complex is clarified. A key is provided to facilitate identification.

}, keywords = {16S, freshwater shrimp, genetic, Integrative taxonomy, morphology}, doi = {https://doi.org/10.1080/00222933.2019.1612959}, author = {de Mazancourt, Valentin and Marquet, G{\'e}rard and Philippe Keith} } @article {5343, title = {Genetic and morphological discrimination of three species of ninespined stickleback Pungitius spp. (Teleostei, Gasterosteidae) in France with the revalidation of Pungitius vulgaris (Mauduyt, 1848)}, journal = {J Zool Syst Evol Res }, volume = {2017}, year = {2018}, pages = {1{\textendash}25}, abstract = {

The taxonomy of French ninespined sticklebacks (Pungitius spp.) has long been controversial. To clarify the taxonomy in this group, we use mitochondrial (COI) and nuclear\  (RNF213) sequence markers, as well as morphological data. In France, both genetic markers discriminate three evolutionary lineages. Morphological analysis on fresh and type specimens supports the different lineages and the existence of three species in France. Pungitius pungitius, occurring in the North of France and Rhone basin, is characterized by specimens longer than 35 mm SL, by a flat head with a straight or slightly concave snout, typically 9{\textendash}10 dorsal spines, 10{\textendash}11 dorsal soft rays, 9{\textendash}10 anal soft rays, 0{\textendash}12 scutes on the caudal peduncle with a keel reaching the last anal-fin ray, longer pelvic fin, post-dorsal and caudal peduncle lengths, and a slim caudal peduncle (caudal peduncle depth/ length 11.8\%{\textendash}21.9\%). Pungitius laevis, occurring in France, in the English Channel basins and Loire drainage, differs from the other species by a head rounded with concave snout in specimens longer than 35 mm SL, accentuating the impression of fleshy lips, 0{\textendash}4 scutes on the caudal peduncle and a higher caudal peduncle depth/length ratio (15.7\%{\textendash} 34.5\%). Finally, Pungitius vulgaris, endemic to the Vienne River and rivers of south-western France as far north as the Garonne estuary, is differentiated by a rounded head with a straight or slightly convex snout, the absence of scutes on the caudal peduncle and by having 11 pectoral-fin rays. Our data confirm the existence of a hybridization zone in the North of France between P. pungitius and P. laevis. As a result, Pungitius lotharingus is invalid, as it was described based on hybrid specimens. A lectotype for P. laevis was designated because the syntypes included hybrids. This revision provides new perspectives for evolutionary biology studies and will have consequences for Pungitius conservation in France.

}, keywords = {France, Integrative taxonomy, mitochondrial DNA COI, Pungitius, RNF213}, author = {Denys, Ga{\"e}l and Persat, Henri and Dettai, Agn{\`e}s and Geiger Mathias and Freyhof, J and Fesquet, J and Philippe Keith} } @article {5020, title = {When molecules and morphology work together: lines of evidence for the validity of Caridina buehleri Roux (Crustacea :Decapoda : Atyidae) and for C. gueryi Marquet, Keith and Kalfatak as its junior synonym}, journal = {Invertebrate Systematics}, volume = {31}, year = {2017}, month = {01/2017}, pages = {220-230}, abstract = {

The taxonomy of the freshwater shrimps Caridina (Atyidae) is very complex and confused mostly because the morphological characters that have traditionally been used for species delimitation and identification are highly plastic. There is thus a need for an integrative approach to their taxonomy. In total, 42 specimens belonging to either Caridina buehleri Roux, 1934 or Caridina gueryi Marquet, Keith \& Kalfatak, 2009 were examined. We combined here morphological data from 12 specimens from the whole distributional range of the species, including type specimens with 16S mtDNA analyses from seven freshly sampled specimens, to verify the specific status of Caridina buehleri from Papua New-Guinea, Central Sulawesi, Western Samoa and the Solomon Islands, and C. gueryi from Vanuatu. The comparison of 24 morphological characters showed that morphological variations of character traits between C. gueryi and C. buehleri are widely overlapping and that no morphological feature can effectively split specimens into two clear groups. Molecular characters corroborated these results, as specimens from both groups were only separated by a 2\% p-distance, a genetic distance that is coherent with their potentially high dispersal abilities. We thus consider C. gueryi as a junior synonym of C. buehleri. Finally, C. buehleri is characterised mainly by a styliform and characteristically indented rostrum and a long stylocerite. Detailed re-descriptions of the type specimens of C. buehleri and C. gueryi are given, as well as their geographical and ecological distribution.

}, keywords = {16S., freshwater shrimp, Indo-Pacific, Integrative taxonomy}, author = {de Mazancourt, Valentin and Marquet, G{\'e}rard and Klotz, Werner and Philippe Keith and Castelin, Magalie} } @article {3847, title = {Invalidity of Gasterosteus gymnurus (Cuvier, 1829) (Actinopterygii, Gasterosteidae) according to integrative taxonomy. }, journal = {Cybium}, volume = {39}, year = {2015}, pages = {37-45}, keywords = {Cytochrome C, Gasterosteidae Gasterosteus aculeatus Gasterosteus gymnurus Gasterosteus islandicus, Integrative taxonomy, oxidase subunit 1}, author = {Denys, Ga{\"e}l and Geiger Mathias and Persat, Henri and Philippe Keith and Dettai, Agn{\`e}s} } @article {3131, title = {Morphological and molecular evidence of three species of pikes Esox spp. (Actinopterygii, Esocidae) in France, including the description of a new species}, journal = {Comptes Rendus Biologies}, volume = {337}, year = {2014}, pages = {521-534}, abstract = {

This integrative taxonomy study of French pikes compares morphological characters and molecular sequence data (mitochondrial COI and nuclear Plagl2 genes). In addition to the expected E.\ lucius, DNA sequences and morphology both support a new species in France, E.\ aquitanicus sp. nov. from the Charente to the Adour drainages. It is characterized by a color pattern of sides with narrow 1{\textendash}1.5-scale-wide oblique vertical bands, conferring it a marbled coat, a snout only 0.9 times larger than the postorbital length, an anal fin basis 1.1{\textendash}1.2 times larger than the caudal peduncle length, 101 to 121 lateral scales, 53 to 57 vertebrae, as well as 24 diagnostic sites in the COI gene and 3 in the Plagl2 gene. Partial COI sequences (131bp) from modern and historical specimens indicate also the presence of E.\ cisalpinus and E.\ lucius during the 19th century in Lake Geneva. Morphological and molecular data points to a possible hybridization between E.\ lucius with both other local pike species, representing a risk for them. Their endangerment status should be evaluated rapidly in order to take conservation measures.

}, keywords = {Cytochrome c oxidase subunit 1, Esox aquitanicus, Esox cisalpinus, France, Integrative taxonomy, New species, Pleiomorphic adenoma gene-like 2}, issn = {16310691}, doi = {10.1016/j.crvi.2014.07.002}, author = {Denys, Ga{\"e}l and Dettai, Agn{\`e}s and Persat, Henri and M{\'e}lyne Hautecoeur and Philippe Keith} }