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Auteur (up) Borsa P., A.I.S., Chen W.-J., Durand J.-D., Meekan M. G., Shen K.-N..
Titre Resurrection of New Caledonian maskray Neotrygon trigonoides (Myliobatoidei: Dasyatidae) from synonymy with N. kuhlii, based on cytochrome-oxidase I gene sequences and spotting patterns Type Article scientifique
Année 2013 Publication Revue Abrégée Comptes rendus biologies
Volume 336 Numéro 4 Pages 221-232
Mots-Clés
Résumé The maskray from New Caledonia, Neotrygon trigonoides Castelnau, 1873, has been recently synonymized with the blue-spotted maskray, N. kuhlii (Muller and Henle, 1841), a species with wide Indo-West Pacific distribution, but the reasons for this are unclear. Blue-spotted maskray specimens were collected from the Indian Ocean (Tanzania, Sumatra) and the Coral Triangle (Indonesia, Taiwan, and West Papua), and N. trigonoides specimens were collected from New Caledonia (Coral-Sea). Their partial COI gene sequences were generated to expand the available DNA-barcode database on this species, which currently comprises homologous sequences from Ningaloo Reef, the Coral Triangle and the Great Barrier Reef (Coral-Sea). Spotting patterns were also compared across regions. Haplotypes from the Coral-Sea formed a haplogroup phylogenetically distinct from all other haplotypes sampled in the Indo-West Pacific. No clear-cut geographic composition relative to DNA-barcodes or spotting patterns was apparent in N. kuhlii samples across the Indian Ocean and the Coral Triangle. The New Caledonian maskray had spotting patterns markedly different from all the other samples. This, added to a substantial level of net nucleotide divergence (2.6%) with typical N. kuhlii justifies considering the New Caledonian maskray as a separate species, for which we propose to resurrect the name Neotrygon trigonoides.
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ISSN 1768-3238 (Electronic) 1631-0691 (Linking) ISBN Médium
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Numéro d'Appel MARBEC @ isabelle.vidal-ayouba @ collection 832
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Auteur (up) Borsa, P.; Durand, J.D.; Shen, K.N.; Arlyza, I.S.; Solihin, D.D.; Berrebi, P.
Titre Himantura tutul sp nov (Myliobatoidei: Dasyatidae), a new ocellated whipray from the tropical Indo-West Pacific, described from its cytochrome-oxidase I gene sequence Type Article scientifique
Année 2013 Publication Revue Abrégée Comptes Rendus Biologies
Volume 336 Numéro 2 Pages 82-92
Mots-Clés Himantura leoparda, New species, Molecular taxonomy, COI, Cytochrome b; myliobatiformes dasyatidae, conservation, fisheries, indonesia, sharks,; rays, elasmobranchs, management, taxonomy, barcode
Résumé It has been previously established that the Leopard Whipray, Himantura leoparda, consists of two genetically isolated, cryptic species, provisionally designated as 'Cluster 1' and 'Cluster 4' (Arlyza et al., Mol. Phylogenet. Evol. 65 (2013) [11). Here, we show that the two cryptic species differ by the spotting patterns on the dorsal surface of adults: Cluster-4 individuals tend to have larger-ocellated spots, which also more often have a continuous contour than Cluster-1 individuals. We show that H. leopard a's holotype has the typical larger-ocellated spot pattern, designating Cluster 4 as the actual H. leoparda. The other species (Cluster 1) is described as Himantura tutul sp. nov. on the basis of the nucleotide sequence of a 655-base pair fragment of its cytochrome-oxidase I gene (GENBANK accession No. JX263335). Nucleotide synapomorphies at this locus clearly distinguish H. tutul sp. nov. from all three other valid species in the H. uarnak species complex, namely H. leoparda, H. uarnak, and H. undulata. H. tutul sp. nov. has a wide distribution in the Indo-West Pacific, from the shores of eastern Africa to the Indo-Malay archipelago. H. leoparda under its new definition has a similarly wide Indo-West Pacific distribution. (C) 2013 Academie des sciences. Published by Elsevier Masson SAS. All rights reserved.
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Langue English Langue du Résumé Titre Original
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ISSN 1631-0691 ISBN Médium
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Numéro d'Appel MARBEC @ isabelle.vidal-ayouba @ collection 624
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Auteur (up) Durand, J.-D.; Borsa, P.
Titre Mitochondrial phylogeny of grey mullets (Acanthopterygii: Mugilidae) suggests high proportion of cryptic species Type Article scientifique
Année 2015 Publication Revue Abrégée Comptes Rendus Biologies
Volume 338 Numéro 4 Pages 266-277
Mots-Clés Chelon; clésTaxonomie moléculaire; Crenimugil; Dajaus; Ellochelon; Molecular taxonomy; Mugil; Osteomugil; Planiliza; Revision; Révision
Résumé The low level of morphometric variability and the poor phylogenetic information borne by the morpho-anatomical characters used thus far in the systematics of grey mullets (Mugilidae) emphasize the utility of molecular systematics in this family. A recent mitochondrial phylogeny of grey mullets has uncovered multiple deep lineages within several species, flagging putative cryptic species. Here, we considered that several of the deeply divergent lineages represent separate species based on either the tree topology, independent data from nuclear markers, geographic distributions, or a combination of the foregoing. By analogy with these well-documented cases, we considered other deep lineages in seven genera we focused on to represent putative cryptic species. Up to two cryptic species were thus potentially detected in the genus Chelon, three in Crenimugil (including two within the single Crenimugil seheli), two in Dajaus, one in Ellochelon, 16 in Mugil (including 13 within the single M. cephalus), two in Osteomugil, and 10 in Planiliza. Wherever possible, we kept the current species epithets to designate those lineages that unambiguously correspond to the type material, based on type locality, and we assigned arbitrary letters (sp. A, B, etc.) to the other lineages. We present a molecular diagnosis for 24 of the species analysed in this work, as well as for 25 putative cryptic species.
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ISSN 1631-0691 ISBN Médium
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Numéro d'Appel MARBEC @ isabelle.vidal-ayouba @ collection 1251
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Auteur (up) Egea, E.; Mérigot, B.; Mahé-Bézac, C.; Féral, J.-P.; Chenuil, A.
Titre Differential reproductive timing in Echinocardium spp.: The first Mediterranean survey allows interoceanic and interspecific comparisons Type Article scientifique
Année 2011 Publication Revue Abrégée Comptes Rendus Biologies
Volume 334 Numéro 1 Pages 13-23
Mots-Clés Méditerranée
Résumé Echinocardium cordatum had long been considered as cosmopolitan, but molecular data revealed it is a complex of cryptic species, with two non-hybridizing species (B1 & B2) in the Mediterranean Sea living in syntopy with Echinocardium mediterraneum. Histological analyses of the gonads from a 17-month sampling period revealed a statistically significant time lag between the Maturity Indices of E. cordatum and E. mediterraneum. The main environmental stimulus may be different for the two nominal species, possibly seawater temperature for E. cordatum and chlorophyll a concentration for E. mediterraneum. Within the E. cordatum complex, spawning timing and synchrony are different according to major geographic areas (Atlantic/Pacific/Mediterranean) and/or the corresponding genetic subdivision [A/P/(B1 & B2)]. In contrast, the effects of temperature on the reproductive cycle seem rather to mirror the genetic lineages than environmental similarities of the different localities. Between the sister species (B1 & B2) no differences could be detected, maybe due to small sample sizes.
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Numéro d'Appel MARBEC @ isabelle.vidal-ayouba @ collection 1215
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Auteur (up) Hadjadji, I.; Frehi, H.; Ayada, L.; Abadie, E.; Collos, Y.
Titre A comparative analysis of Alexandrium catenella/tamarense blooms in Annaba Bay (Algeria) and Thau lagoon (France); phosphorus limitation as a trigger Type Article scientifique
Année 2014 Publication Revue Abrégée Comptes Rendus Biologies
Volume 337 Numéro 2 Pages 117-122
Mots-Clés Algeria; Algérie; Efflorescences; France; Méditerranée; alexandrium catenella/tamarense; blooms; mediterranean
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Numéro d'Appel MARBEC @ isabelle.vidal-ayouba @ collection 397
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