1,223 Works

Solea bleekeri Boulenger, 1898, a junior synonym of Pegusa nasuta (Pallas, 1814), with the recognition and redescription of Solea turbynei Gilchrist, 1904 (Pleuronectiformes: Soleidae)

Josiane Vachon, Martine Desoutter & François Chapleau
Solea bleekeri Boulenger, 1898, which was described from a single specimen, is not a valid species; the holotype of this nominal species belongs to Pegusa nasuta (Pallas, 1814). Solea turbynei Gilchrist, 1904 is recognized and redescribed to include all specimens of Solea that have been traditionally described as belonging to S. bleekeri. Solea simonensis Bonde, 1922 based on a single anomalous specimen is confirmed as a junior synonym of S. turbynei.

New data on the reproductive biology of the Atlantic weasel shark, Paragaleus pectoralis (Chondrichthyes: Hemigaleidae) from the coast of Senegal (eastern tropical Atlantic)

Christian Capapé, Youssouph Diatta, Mansor Diop, Christian Reynaud & Olivier Guélorget
The Atlantic weasel shark, Paragaleus pectoralis (Garman, 1906), is the only species of the genus Paragaleus to be recorded off the western coast of Africa. It is commonly landed at the fishing sites along the Senegalese coast. Adult males and females are mostly captured in spring and summer. The smallest male and female adults were 810 mm and 900 mm total length (TL), respectively. The largest male and the largest female adults were 1.32 m...

On the occurrence of the Por’s goatfish, Upeneus pori (Mullidae) in southern Tunisia (central Mediterranean)

Jamila Ben Souissi, Hamadi Mejri, Jeanne Zaouali & Christian Capapé

A new species of varicorhinus (ostariophysi: cyprinidae) from West-Central Africa

Abebe Getahun, Melanie L.J. Stiassny & Guy G. Teugels
A new Varicorhinus species, V. axelrodi n.sp., is described from the Kouilou (Republic of Congo-Brazzaville) and the Nyanga and Ngounie in Gabon. V. axelrodi differs from all congeners by the combination of the following characters: absence or extreme reduction of barbels, last simple dorsal fin ray weak and flexible, and mouth opening more or less straight. Prior to the present study three species (V. sandersi, V. steindachneri and V. tornieri) were known from the inland...

Os et ligaments intermusculaires chez les poissons plats [Teleostei : Pleuronectiformes] : interprétations phylogénétiques

Bruno Chanet, François Chapleau & Martine Desoutter
Le but de ce travail est de reconsidérer certains des arguments présentés par Patterson et Johnson (1995) sur les os intermusculaires chez les Pleuronectiformes. Sur la base de la présence de ces structures et de la localisation des premières côtes chez deux familles de poissons plats (Bothidae et Samaridae), ces auteurs suggèrent que ces deux familles sont étroitement apparentées. Ils insistent également sur l’intérêt des os et ligaments intermusculaires pour reconstituer la phylogénie du groupe....

Trends in cyprinid polyculture

Roland Billard & Paolo Berni
Polyculture is the association of fish species, mostly cyprinids, feeding at different levels of the aquatic pond ecosystem. It is an efficient food production system, which typically produces five tonnes of fish/ha/year without distribution of formulated artificial feeds but with intense organic fertilisation as well as grass and agricultural by-products. The exact figures of polyculture production in the world are not known precisely. A part of the production of cyprinids is due to monoculture of...

Histology and morphology of the scales in some extinct and extant teleosts

François J. Meunier & Paulo M. Brito
Scale morphology and histology of some fossil and extant teleosts, as well as some stem group teleosts such as Pachycormiforms, are compared. Basal teleosts have lepidosteoid type scales, although cycloid scales appear at the †Leptolepis coryphaenoides level. Pachycormiforms have mainly lepidosteoid scales, but amioid type scales also occur within this clade, confirming that pachycormiforms are not teleosts. An osteoglossid type of scale is defined, based on morphological and histological characters and is considered a derived...

Second record of Seriola rivoliana (Carangidae) in the Mediterranean

Luca Castriota, Manuela Falautano, Silvestro Greco & Franco Andaloro

Phylogenetical relationships and palaeozoogeography of the marine Cretaceous Tselfatiiformes (Teleostei, Clupeocephala)

Louis Taverne & Mireille Gayet
The order Tselfatiiformes comprises three families, the Protobramidae (three genera and four species), the Eoplethodidae (one genus and one species) and the Plethodidae (seventeen genera and twenty-seven species). Although very specialised, the Protobramidae are the most primitive family within the order. Eoplethodidae, only known by the caudal skeleton, are less evolved than the Plethodidae. Within the Plethodidae, Paranogmius, the only one keeping a subtemporal fossa, is the most plesiomorphic genus. A more apomorphic clade unites...

Apristurus melanoasper, a new species of deep-water catshark from the North Atlantic (Chondrichthyes: Carcharhiniformes: Scyliorhinidae)

Samuel P. Iglésias, Kazuhiro Nakaya & Matthias Stehmann
A new deep-water catshark, Apristurus melanoasper n. sp., is described based on 53 specimens from the North Atlantic Ocean at 512 to 1520 m depth. This new species is characterized by having longer upper labial furrow than the lower one, high count of spiral intestine valves, a long abdomen, large dermal denticles and black coloration of the body. Among the species of the North Atlantic, this new species is most similar to A. laurussonii, but...

First records of Cobitis elongatoides and Sabanejewia baltica (Cobitidae) for Germany

Jörg Bohlen, Jörg Freyhof & Christian Wolter

A new species of Parioglossus (Gobioidei, Ptereleotridae) from Seychelles Islands

Philippe Keith, Pierre Bosc & Pierre Valade
Parioglossus multiradiatus n. sp. is described on the basis of 9 specimens collected from streams in the Seychelles Islands. It differs from other species belonging to the genus by a combination of characters including the absence of preopercular pore, the presence of posterior nasal pore, the presence of a dark lateral body stripe, the number of scales in lateral series (98-109), the number of soft rays in second dorsal (I, 16-17) and anal (I, 17-18)...

Premier signalement du requin tisserand, Carcharhinus brevipinna (Chondrichthyes: Carcharhinidae) pour la Nouvelle-Calédonie

Charles Caraguel & Samuel P. Iglésias

Does the GH/IGF system mediate the effect of water temperature on fish growth? A review

Jean-Charles Gabillard, Claudine Weil, Pierre-Yves Rescan, Isabel Navarro, Joaquim Gutierrez & Pierre-Yves Le Bail
In fish, as in all poikilotherms, growth is strongly dependent on water temperature. Given that the GH/IGF system regulates growth, it could mediate the effects of temperature on fish growth. Indeed, before hatching, the higher embryonic growth rate in rainbow trout at high temperatures is associated with higher expression of the IGF2 gene in the whole embryo. Furthermore, post-natal growth fluctuations depend on water temperature and are associated with variations of plasma GH and IGF1....

https://sfi-cybium.fr/fr/node/1317/edit

Konan N’Da & Christian Déniel
Les rougets barbets (Mullus surmuletus et M. barbatus) sont présents en Méditerranée, dans l’Atlantique, en Manche et en mer du Nord. Dès l’âge d’un mois, les juvéniles de rouget de roche, nouvellement métamorphosés, sont accessibles au chalut à perche utilisé dans le Blavet. Les meilleures pêches ont été réalisées en vives-eaux, aux dernières heures de la marée descendante à l’étale de basse mer. À ce stade de développement, les jeunes poissons mesurent entre 4 et...

A general approach to length-weight relationships for New Caledonian lagoon fishes

Michel Kulbicki, Nicolas Guillemot & Marion Amand
Most studies involving Pacific reef fishes use underwater visual censusing techniques to estimate their biomass and stock. This requires to know the length-weight relationships of all the species censused. Currently, only a small proportion of these relationships (15.4%) are available for reef fish species in the Pacific area. In the present article we propose length-weight relationships at four organisation levels: species, genera, families and morphological groups. A data base of 53,800 specimens belonging to 788...

Deduced primary structures of three vitellogenins and specific binding to putative multiple ovarian receptors in white perch (Morone americana)

Benjamin J. Reading, Naoshi Hiramatsu, Takahiro Matsubara, Akihiko Hara & Craig V. Sullivan
Three complete cDNA s encoding different forms of vitellogenin (vtg) were cloned from a white perch (Morone americana) liver cDNA library. The two longest cDNA s encoded Vtgs with a complete suite of yolk protein domains that, based on comparisons with vtg sequences from other species, were categorized as VtgAa and VtgAb. The shorter cDNA encoded a Vtg that lacked a phosvitin domain, had a shortened C-terminus, and was categorized as VtgC. Ligand blots and...

Diagnosing and solving the global crisis of fisheries: obstacles and rewards

Daniel Pauly
The multiple factors contributing to the crisis, which since the mid-1990s besets global fisheries, are presented along with key trends illustrating four manifestations of that crisis, i.e., (i) a declining world catch, (ii) increasing global fishing effort, (iii) declining catch per effort and profitability, and (iv) a three-way global expansion of fishing (geographic, bathymetric, taxonomic). The point is made that fisheries scientists and economists collectively know what is required to turn these trends around and...

Top predators and stable isotopes document the cephalopod fauna and its trophic relationships in Kerguelen waters

Yves Cherel, Nicolas Gasco & Guy Duhamel
Information on the poorly known but ecologically important cephalopod fauna of Subantarctic islands was collected using fishery bycatches, together with published data from oceanographic cruises and top predators (fishes and seabirds) as biological samplers. Overall, the cephalopod fauna from Kerguelen Islands includes at least 38 different species. Oegopsid squids dominate the assemblage over octopods (31 and 6 taxa, respectively), with one species of sepiolid occurring over the shelf. This rich community includes a large diversity...

The presence of the seahorse Hippocampus patagonicus in the Argentine Sea based on the cytochrome b sequence of mitochondrial DNA

Diego C. Luzzatto, Rodrigo Sieira, María G. Pujol & Juan M. Díaz de Astarloa
This study aimed at sequencing the mitochondrial cytochrome b gene (cyt b) of seahorses morphologically identified as Hippocampus patagonicus Piacentino {&} Luzzatto, 2004 from the two known localities where the species occur in the Argentine Sea (San Antonio Oeste and Mar del Plata). Based on the lack of substitutions within cyt b found between the individuals of both localities, the geographical range of H. patagonicus was extended up to the Northern limit of the Argentine...

Divergences morphologiques allopatriques et sympatriques de Tilapia kottae (Perciformes, Cichlidae) endémique des lacs Barombi Kotto et Mboandong et affinités avec des Tilapias de la Ligne Volcanique du Cameroun

Arnold Roger BitjaNyom, André Gilles, Antoine Pariselle, Jos Snoeks & Charles Félix Bilong Bilong
Cette étude porte sur la variabilité morphologique de Tilapia kottae Lönnberg, 1904, un Cichlidae endémique de deux lacs de cratères (Barombi Kotto et Mboandong) situés sur la ligne volcanique du Cameroun ainsi que sur les affinités morphologiques de T. kottae avec d’autres espèces de Tilapia de la région. L’Analyse en Composantes Principales (effectuée sur des caractères morphométriques et méristiques classiques) montre l’existence, dans chaque lac, de deux phénotypes de T. kottae. Cette différenciation morphologique concerne...

First record of Kuhlia sauvagii Regan, 1913 (Perciformes) in Mayotte and Réunion islands, Western Indian Ocean

Pierre Feutry, Magalie Castelin, Henri Grondin, Corinne Cruaud, Arnaud Couloux & Philippe Keith
Kuhlia sauvagii Regan, 1913 was recently resurrected from synonymy with K. rupestris by morphological and meristic analyses. In this study, we sequenced the mitochondrial ND4 gene of these two species and used the results for molecular identifications among batches of Kuhlia. K. sauvagii, previously reported to be endemic in Madagascar, is reported here from Mayotte (Comoros) and Réunion (Mascarenes) islands, enlarging its geographical range in the Western Indian Ocean. The genetic identification method and dispersal...

A review of the amphidromous species of the Glossogobius celebius complex, with description of three new species

Douglass F. Hoese & Gerald R. Allen
Amphidromous species of the Glossogobius celebius complex found in lower reaches rivers of the eastern Indian Ocean and the western Pacific Ocean are reviewed. Glossogobius celebius is not as widely distributed as previously thought and is confined to the eastern Indian Ocean to eastern Indonesia. Three species are described as new species from Australia, New Guinea and various localities in the western Pacific. The species are distinguished on the basis of coloration, anal fin-ray and...

Oxyeleotris colasi (Teleostei: Eleotridae), a new blind cave fish from Lengguru in West Papua, Indonesia

Laurent Pouyaud, Kadarusman, Renny K. Hadiaty, Jacques Slembouck, Napoleon Lemauk, Ruby V. Kusumah & Philippe Keith
Oxyeleotris colasi is the first hypogean fish recorded from West Papua. The habitat consists of a freshwater pool in the cave of Jabuenggara located in the heart of Seraran anticline in the limestone karst of Lengguru. The new species is most closely related to the blind cave fish O. caeca described by Allen (1996) from eastern New Guinea. The two troglomorphic species are hypothesised to be related to O. fimbriata, an epigean freshwater gudgeon that...

Length-weight, length-length and a proposed empirical standard weight equations for the Italian endemic cyprinid species Sarmarutilus rubilio

Daniela Giannetto, Giuseppe Maio, Laura Pompei, Stefano Porcellotti & Massimo Lorenzoni
Length and weight data of 21,040 specimens of the Italian endemic species Sarmarutilus rubilio (Bianco & Ketmayer, 2014) were collected throughout the area of distribution of the species and used to cal- culate total length-weight (TL-W), standard length-total length (SL-TL), fork length-total length (FL-TL), and standard weight (Ws) equations. The SL-TL equation was TL = 1.153 SL + 4.121; the FL-TL equation was TL = 1.037 FL + 0.288. The log-transformed TL-W equation was: log10W...

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