391 Works

Description of Labeo latebra (Cyprinidae) from the Nile River in Sudan

Timo Moritz & Dirk Neumann
A new Labeo species was discovered during surveys conducted on the Nile basin in Sudan between 2006 and 2016. It is described herein as Labeo latebra sp. nov. It differs from all other Labeo species of the Nile basin by having only 12, rarely 13, scales around the caudal peduncle (instead of 16 or more), and from all Labeo species occurring in the Nile River except L. meroensis by having only 4.5, rarely 5.5, scales...

Les engins et techniques de pêche utilisés dans la baie de Loango, République du Congo, et leurs incidences sur les prises accessoires

Alexandre Girard, Hélène Dembe Louvinguila, Nathalie Breheret, Jonathan Monsinjon, Margaux Charra, Elodie Protat, Hélène Roche, Christophe Ngokaka & Marc Girondot
une étude a été menée pour évaluer les risques de captures accessoires par les différents engins et techniques de pêche utilisés dans la baie de Loango au Congo-brazzaville. La liste des espèces cibles est donnée de même que les espèces non-ciblées. Parmi celles-ci, seules des tortues marines sont observées. L’étude montre que les filets dormants à grandes mailles sont plus nocifs pour les tortues marines que les filets à petites mailles. Les filets à petites...

Invalidity of Gasterosteus gymnurus (Cuvier, 1829) (Actinopterygii, Gasterosteidae) according to integrative taxonomy

Gaël P.J. Denys, Matthias Geiger, Henri Persat, Philippe Keith & Agnès Dettaï
The three-spined stickleback Gasterosteus spp. is a model organism largely used in biology. Four species have been described in Europe: G. aculeatus, G. gymnurus, G. islandicus and the extinct G. crenobiontus. Our integrative taxonomy study, including 194 specimens, demonstrates that these taxa are distinguishable neither with the mitochondrial COI marker nor the morphological characters like lateral plates, supposed to differentiate them. Thus, we invalidate Gasterosteus gymnurus, and we consider it as junior synonym of Gasterosteus...

Coris julis cleaning a Mola mola, a previously unreported association

Nuno Vasco-Rodrigues & Patricia M. Cabrera
Cleaning activity of a Coris julis (Linnaeus, 1758) on a Mola mola (Linnaeus, 1758) was reported in June 2015 in La Herradura (Spain), Mediterranean Sea. This interaction lasted for more than 70 seconds with the cleaner focusing mainly in the area of the head and gills of the host, who remained motionless during the event. This represents the first report for this kind of interaction between these two species.

Range extensions of four species of parrotfishes (Scaridae) in the northern Gulf of California, Mexico

Ollin T. Gonzalez-Cuellar, Héctor Reyes-Bonilla, Manon Fourrière, Mario Rojo, Arturo Hernández-Velasco, Israel Sánchez-Alcántara & Tad Pfister
We present new records extending the known geographic range of four species of parrotfishes (family Scaridae) in the Gulf of California, Mexico: Scarus compressus, S. ghobban, S. perrico and S. rubroviolaceus. The presence of these species in the northern gulf is relevant considering their ecological role as consumers of algae and mollusks, and as producers of carbonated sediments in the reefs, which is not currently played by any other fish in that area. The records...

An additional specimen of a rare lanternbelly Acropoma lecorneti (Perciformes: Acropomatidae) from Vanuatu, South Pacific Ocean

Makoto Okamoto & Hiroyuki Motomura
A single specimen of a rare species of lanternbelly, Acropoma lecorneti Fourmanoir, 1988, was collected from Vanuatu in depths 275-290 m. The specimen represents the third specimen and the first record of the species from Vanuatu, South Pacific Ocean. This study provides new morphological data of A. lecorneti based on the additional specimen, with a comparison to other specimens of the species.

A short note on the terminal nerve in Callorhinchus milii (Callorhinchidae, Holocephali, Chondrichthyes)

Martin Licht & Peter Bartsch
Recently, the terminal nerve has been described for holocephalan fishes in more detail. But this nerve was described only in two species (Hydrolagus colliei and Chimaera monstrosa), which represent just the most derived family (Chimaeridae) of extant holocephalans. This study completes the former account and for the first time describes the nervus teminalis in a late embryonic elephant shark (Callorhinchus milii) on the basis of a serially sectioned specimen. The course of the terminal nerve...

La collection de préparations histologiques effectuées par Paul Gervais (1816-1879) sur le squelette des “poissons”

François J. Meunier & Marc Herbin
Paul Gervais (1816-1879) fut titulaire de la chaire d’Anatomie comparée du Muséum national d’Histoire naturelle de 1868 à 1879. Pendant la dernière partie de sa carrière, il s’était intéressé à la structure microscopique du squelette des vertébrés, tout particulièrement de celui des mammifères fossiles, mais aussi de divers éléments minéralisés de “Poissons”1 actuels. Il avait effectué un certain nombre de préparations microscopiques (plaques minces) de pièces squelettiques de chondrichtyens et d’ostéichtyens variés dont une quarantaine...

Shore fishes of French Polynesia

Gilles Siu, Philippe Bacchet, Giacomo Bernardi, Andrew J. Brooks, Jeremy Carlot, Romain Causse, Joachim Claudet, Eric Clua, Erwan Delrieu-Trottin, Benoit Espiau, Mireille Harmelin-Vivien, Philippe Keith, David Lecchini, Rakamaly Madi Moussa, Valeriano Parravicini, Serge Planes, Cédric Ponsonnet, John E. Randall, Pierre Sasal, Marc Taquet, Jeffrey T. Williams & René Galzin
On the occasion of the 10th Indo-Pacific Fish Conference (http://ipfc10.criobe.pf/) to be held in Tahiti in October 2017, it seemed timely to update Randall’s 1985 list of the fishes known from French Polynesia. Many studies focusing on fishes in this area have been published since 1985, but Randall’s list remains the authoritative source. Herein we present an expanded species list of 1,301 fishes now known to occur in French Polynesia and we review the expeditions...

Histology of ganoid scales from the early Late Cretaceous of the Kem Kem beds , SE Morocco : systematic and evolutionary implications

François J. Meunier, René-Paul Eustache, Didier Dutheil & Lionel Cavin
In 1963, N. Tabaste described disconnected fossil material from the Saharan Cenomanian site of Gara Tabroumit, and especially three sets of isolated scales that she all referred to the genus Lepidotes. Although the rhomboid shape and overall morphology of one set of scales allow regarding them as ganoid scales, the external aspect of the ganoine is not as regularly smooth and shiny as it is in most lepidosteoid scales commonly referred to ginglymodian (“semionotiform”) fishes....

Quelques aspects de la biologie de la reproduction de Schilbe multitaeniatus (Siluriformes, Schilbeidae) de la rivière Rembo Bongo (Gabon)

Jean Félicien Liwouwou, Simon Ahouansou Montcho, Elie Montchowui, Jean Daniel Mbega & Philippe Lalèyè
Afin de gérer durablement l’espèce Schilbe multitaeniatus (Pellegrin, 1913) et réaliser à terme son élevage, une étude de quelques aspects de la biologie de sa reproduction a été conduite dans la rivière Rembo Bongo au Gabon, de juillet 2010 à juin 2011. Les échantillons étudiés sont issus d’une pêche expérimentale réalisée dans deux stations (Mafoumi et Moanda) au moyen de filets dormants. Les résultats ont montré que le sex-ratio était en faveur des femelles (χ²...

New record of Desmodema polystictum from northwestern Indian Ocean

Abhay Deshmukh, Branko Dragičević, Charan Kumar Paidi & Karthikeyan Muniraj
Desmodema polystictum (Ogilby, 1898) was recorded for the first time from Lakshadweep waters, India. A single specimen (14.8 cm total length, weighing 29.2 g) has been caught using midwater trawl near Minicoy Island at a depth of 100 m. Morphological identification features are presented in this paper.

Hatching success in brackish water of Perca fluviatilis eggs obtained from the western Baltic Sea

Emil A. F. Christensen, Mikkel Skovrind, Morten T. Olsen, Henrik Carl, Peter Gravlund & Peter R. Møller
Estuaries are important spawning areas for many freshwater and marine fishes. This is also the case for Baltic populations of European perch Perca fluviatilis, an important commercial species in most of Europe. There is, however, inconsistency in the literature between the maximum salinity tolerance of the eggs in vivo, and the salinities at which some populations spawn in situ (7 vs. 9.6‰). In the present study, hatching success of perch was determined in vivo for...

Polylepion russelli (Labridae), a trans-Indo-Pacific species

Philippe Béarez, Agnès Dettaï & Martin F. Gomon
Russell’s wrasse, Polylepion russelli, is a relatively rare species known to inhabit deep reefs of a few Central and Western Pacific islands: Ryukyu Islands (Japan), Hawaii, and Moorea (Society Islands). This new record at Réunion Island, about 10 000 km to the West is surprising but identification was confirmed by morphometric characters and the CO1 gene sequence. This recent discovery could be linked to gaps in the sampling of the outer slopes reefs and the...

A new record of the barred knifejaw Oplegnathus fasciatus (Perciformes, Oplegnathidae), a Pacific fish, in the Adriatic Sea (Urinj, Croatia)

Jakov Dulčić, Branko Dragičević, Nedo Vrgoč, Igor Isajlović, Željana Đođo & Nenad Antolović
On 23 November 2015, one specimen of Oplegnathus fasciatus was caught by a trap designed for catching Nephrops norvegicus at around one Nm off the Urinj (Rijeka Bay, Croatian coast, northern Adriatic) (45º17’00.40”N; 14º30’35,95'”E). This is the first record in Croatian part of the Adriatic Sea.

Size estimation of Synbranchus marmoratus and Synbranchus madeirae (Teleostei) based on isolated cranial and post-cranial bones

Gabriela Prestes-Carneiro, Philippe Béarez, Kareen Kareen Dillenseger & Takayuki Yunoki
The remains of South American swamp-eels are commonly recovered in pre-Columbian archaeological sites and swamp-eels are an important prey of piscivorous predators. In an attempt to assess the size classes of modern and archaeological fish from Bolivia, here we provide allometric regression equations for Synbranchus marmoratus and S. madeirae, resulting in total body length estimations on the basis of isolated skeletal elements. A total of 68 modern skeletons for Synbranchus marmoratus and 82 for Synbranchus...

Gardening behaviour of Sicydium punctatum (Gobioidei: Sicydiinae): in vitro experiments in the context of chlordecone pollution in Guadeloupe Island rivers

Cédric Barbeyron, Estelle Lefrançois, Dominique Monti, Philippe Keith & Clara Lord
To fight the banana weevil, organochlorine insecticide was used in Guadeloupe, leading to a contamination of the rivers by chlordecone, for which the molecules are long lasting and persist in the environment although its use was banned in the 90s. In the rivers, Sicydiinae gobies of the genus Sicydium represent key species of the ecosystem. They are herbivorous and feed on the epilithic biofilm by scraping it off the rocks. We undertook in vitro experiments...

Sexual anatomy of the flounder Citharichthys spilopterus (Paralichthyidae)

Abraham Kobelkowsky & Manuel Castillo-Rivera
The Bay whiff Citharichthys spilopterus is distributed from New York to the south of Brazil. In order to know their reproductive anatomy, several specimens were collected during an annual cycle in the lagoon Tampamachoco, Veracruz, Mexico. This species shows, like other Pleuronectiformes, a reduction in the size of the visceral cavity, due to the forward displacement of the anal fin. This change implies a reversal position of the reproductive system in both sexes, so that...

Status and distribution of Smilosicyopus species (Teleostei, Gobioidei)

Philippe Keith & Laura Taillebois
Status and distribution of Smilosicyopus species are unclear, as they are rare, difficult to sample and to distinguish. During thirteen years, many specimens were collected by the MNHN and collaborators in Pacific islands, including samples in all type localities. These specimens were compared and COI gene sequenced. Seven out of the eight species known to date were confirmed, while S. mystax is considered a synonym of S. leprurus. Moreover, Smilosicyopus species have a broader distribution...

A new genus and species of neotropical electric fish, Japigny kirschbaum (Gymnotiformes: Sternopygidae), from French Guiana

François J. Meunier, Michel Jégu & Philippe Keith
Several specimens of a new knife-fish, Distocyclus guchereauae, belonging to Sternopygidae (Gym- notiformes), were caught in two tributaries (Litany and Tampoc) of Maroni river (French Guiana). This species differs from the other Distocyclus by having 13-14 versus 11-15 precaudal vertebrae, a small number of anal fin rays (184-187 versus 160-260), a triangular head with a short snout and a terminal mouth, and the anus located straight below the eyes.

Age and growth of Muraena helena (Muraenidae) from the north coast of Tunisia

Balkis Sallami, Philippe Béarez & Mohamed Ben Salem
The age and growth of the moray eel (Muraena helena) from the north coast of Tunisia were determined from otolith growth ring studies. A total of 221 specimens were used. Total length (TL) and weight (TW) ranged from 31 to 100 cm and from 45.4 to 2311.9 g, respectively. The transverse section of the otoliths observed under transmitted light proved to be a useful method for ageing M. helena. Marginal increment analysis was used to...

First record of five fish species from Réunion Island observed during the inventory of the Marine Natural Zones of Interest for Ecology, Flora and Fauna (ZNIEFF)

Mathieu Pinault, Julien Wickel, Thierry Mulochau, Jean-Benoît Nicet & Ronald Fricke
This paper reports the first record of five species of marine fishes from Reunion Island, identified during biodiversity surveys carried out within the framework of the Marine Natural Zones of Interest for Ecology, Flora and Fauna (ZNIEFF). These species: Fusigobius inframaculatus(Randall, 1994), Fusigobius neophytus(Günther, 1877), Samariscus triocellatusWoods, 1960, Trichonotus marleyi(Smith, 1936) and Zapogon evermanni(Jordan and Snyder, 1904) were all photographed within non-reef habitats, despite the sampling of many reef and non-reef habitats of the island...

The silver-cheeked toadfish Lagocephalus sceleratus (Gmelin, 1789) reaches Italian waters

Jakov Dulčić & Branko Dragičević
On 8 April 2014, one specimen of Lagocephalus sceleratus (Gmelin, 1789) (male; total length, TL = 53 cm; weight, W = 1536 g) was captured in Vodice Bay (middle eastern Adriatic, Croatian waters). This represents the third record of this species in the eastern Adriatic (Croatian waters).

Northernmost record and new biological data of the Phaeton dragonet Synchiropus phaeton (Callionymiformes: Callionymidae) in the eastern Atlantic

Rafael Bañón, Xesús Morales, Alexandre Alonso-Fernández, David Barros-García & Alejandro De Carlos
An actively spawning female specimen of the Phaeton dragonet Synchiropus phaeton (Günther, 1861) of 22 cm TL was recorded with bottom trawl in Atlantic Portuguese waters. The identification of the specimen is confirmed by morphometric and meristic parameters as well as DNA barcoding. This northernmost record from the Eastern Atlantic provides new maximum length reference for the species. The histological examination of reproductive tissue in S. phaeton reveals that this species is a batch spawner...

Length-weight and length-length relationships and condition factors of 30 actinopterygian fish from the Mono basin (Benin and Togo, West Africa)

Djiman Lederoun, Philippe Lalèyè, Emmanuel Vreven & Pierre Vandewalle
Based on their catches, this study describes the length-weight relationships (LWRs), length-length relationships (LLRs), and condition factors (K) of the 30 most common actinopterygian fish found in the Mono basin. A total of 6,591 specimens were caught, using multiple gears and fishing methods, between February 2011 and May 2014. The allometric b coefficient of the LWRs (BW = a × TLb) ranged between 2.650 for Polypterus senegalus and 3.468 for Awaous lateristriga with an average...

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