564 Works

Domestication level of the most popular aquarium fish species: is the aquarium trade dependent on wild populations?

Fabrice Teletchea
Aquarium fish trade has strongly increased in the past decades to become one of the most popular hobbies globally. Historically, all aquarium fish traded were wild-caught. Then, an increasing number of fish species have been produced in captivity. The main goal of the present study is to apply the concept of domestication level to the hundred most popular aquarium fish species in Europe and North America. The levels of domestication of freshwater aquarium fish species...

Possible collapse of reef shark populations in remote coral reef ecosystems in the Coral Sea (Western Pacific)

Eric Clua & Thomas Vignaud
The decline of meso-predators such as reef sharks is a concern as such species can have important ecological roles in maintaining reef ecosystem resilience. Two field trips conducted in August 2010 and November 2011 to the Chesterfield archipelago (Coral Sea) allowed us to assess the abundances and average sizes of medium-bodied Carcharhinidae with a specific focus on grey reef shark (Carcharhinus amblyrhynchos), through fishing (46 hours of accumulated effort) and underwater visual censuses (25 hours...

New records and extension of geographical distribution of Heterophallus echeagarayi (Poeciliidae) in the Usumacinta Province, Mexico

Nicolás Álvarez-Pliego, Alberto J. Sánchez, Rosa Florido, Miguel Angel Salcedo, Alberto Macossay-Cortez, Roberto Brito & Henrry Reyes
The poeciliid Heterophallus echeagarayi (Álvarez, 1952) has been recorded in the Tonalá and Grijalva-Usumacinta basins (Mexico). However, the present delimitation of its distribution could result from the lack of specific samplings of small-bodied species in the surrounding basins with similar habitats and environmental conditions. Our aim was to review its distribution through intensive sampling in the same basin and in adjacent basins. The result was an increased record in the Grijalva-Usumacinta basin, among them in...

Foraging habitat and performances of King penguins Aptenodytes patagonicus Miller, 1778 at Kerguelen islands in relation to climatic variability

Charles-André Bost, Anne Goarant, Annette Scheffer, Philippe Koubbi, Guy Duhamel & Jean-Benoît Charrassin
Understanding how climate change affects the foraging ecology of key marine predators is an important issue in the study of Southern Ocean food webs. Since 1998, we have conducted a long term research program on the foraging ecology of a top-diving predator, the King penguin Aptenodytes patagonicus, simultaneously at Kerguelen and Crozet Islands with the support of the IPEV (Institut Polaire Français). King penguin is one of the most important predatory birds at Kerguelen. In...

Interactions between seabirds and fisheries in the French EEZs: implications for conservation and management [Extended abstract]

Cédric Cotté, Karine Delord, Clara Péron, Charles-André Bost, Guy Duhamel, Patrice Pruvost, Nicolas Gasco, Alexis Martin & Henri Weimerskirch

Liparids from the Eastern sector of Southern Ocean and first information from molecular studies

Guy Duhamel, Mélyne Hautecoeur, Agnès Dettaï, Romain Causse, Patrice Pruvost, Frédéric Busson, Arnaud Couloux, Philippe Koubbi, Richard J. Williams, Catherine Ozouf-Costaz & Gabrielle Nowara
Two cruises in the eastern sector of the Southern Ocean (POKER 2006 off the Kerguelen Islands and CEAMARC 2008 off Terre Adelie and George V Land), with extensive surveys, provided an interesting and abundant liparid fish collection (two genera, 13 species, 90 specimens). The fish were studied with modern approaches in systematic studies, both from morphoanatomy and molecular sequences (COI Barcode). In addition to providing useful descriptions of species often known from few specimens, the...

Diet of the grey gurnard, Eutrigla gurnardus in the Adriatic Sea, north-eastern Mediterranean

Stefano Montanini, Marco Stagioni & Maria Vallisneri
A total of 449 individuals of grey gurnard Eutrigla gurnardus (Linnaeus, 1758) were collected between December 2007 and July 2008 by bottom trawl surveys in the Adriatic Sea, north-eastern Mediterranean. Stomach contents were investigated in order to analyse diet composition according to fish size and depth. The most important prey were Crustacea, mostly Mysidacea such as Lophogaster typicus and Decapoda such as Goneplax rhomboides and Philocheras bispinosus, followed by Teleostei, mostly Perciformes as Gobius niger...

Population structure, feeding biology and predation impact of midwater fishes in predator feeding areas around Heard and McDonald Islands, Southern Indian Ocean [Extended Abstract]

Richard Williams, Brian P.V. Hunt, Stevie R. Davenport & Timothy D. Lamb

Intraspecific chromosome analysis in Rhamdia quelen (Siluriformes, Heptapteridae)

Vivian Patricia Oliveira de Moraes, Juliana de Souza Carneiro & Ana Lúcia Dias
We studied the chromosomes of Rhamdia quelen. All specimens presented 2n = 58 and 36m+16sm+6st and FN = 116 and showed metacentric B chromosomes of medium size. The specimens from Água dos Patos river, Água das Pedras river and fish farm station showed a secondary constriction in the short arm of pair 28 (st), coincident with the NOR, while in the Taquari river population, the NOR was seen in the terminal region of the short...

Cycle de reproduction de Symphodus (Crenilabrus) tinca sur les côtes nord-est de la Tunisie

Saoussen Ben Slama, Domia Menif, Rafika Fehri-Bedoui & Oum Kalthoum Ben Hassine
La biologie de la reproduction du Crénilabre paon Symphodus (Crenilabrus) tinca (Linnaeus, 1758) a été analysée en termes de sex-ratio et de cycle de reproduction. Au total, 683 individus ont été collectés sur quatre sites de débarquement de la pêche artisanale des côtes nord-est de la Tunisie, de septembre 2004 à août 2005. La sex-ratio était en faveur des mâles (1,38 : 1) et les individus de taille supérieure à 27 cm étaient majoritairement de...

Diet of the black scorpionfish Scorpaena porcus (Scorpaenidae) of the gulf of Annaba, Algeria

Nihed Omri, Farid Derbal & M. Hichem Kara
The diet of the black scorpionfish Scorpaena porcus (Linnaeus, 1758) of Annaba Gulf (Eastern Algeria) was studied from April 2011 to April 2012. A total of 520 specimens, with a total length between 10.2 and 27.8 cm, were analyzed. Analysis of the digestive contents revealed a dominance of decapods crustaceans (%IRI = 91.2). This species ingested an average of 0.58 prey weighing 0.73 g. For both sexes, arthropods were essential prey (%IRIm = 73.6; %IRIf = 86.9). The diet of large (L) individuals...

La contamination métallique du rouget de vase (Mullus barbatus) et de la sardinelle (Sardinella aurita) du golfe de Tunis

Rym Ennouri, Sami Mili & Lassaad Chouba
L’objectif de cette étude est de comparer les niveaux de contamination en métaux (Cd, Pb, Hg, Cu et Zn) d’une espèce benthique, le rouget de vase (Mullus barbatus), et une d’espèce pélagique, la sardinelle (Sardinella aurita) du golfe de Tunis. L’accumulation saisonnière des cinq éléments considérés a été suivie dans le muscle, le foie, les branchies, le cerveau et les gonades durant l’année 2006. Pour les deux espèces étudiées, le site préférentiel d’accumulation du Cd...

CHIPS: A database of historic fish distribution in the Seine River basin (France)

Sarah Beslagic, Marie-Christine Marinval & Jérôme Belliard
The evolution of freshwater fish distribution and long term change in the composition of fish assemblages in rivers are currently the subject of various ecological studies. These studies usually focus on a relatively short range of time, rarely exceeding the last few years. However, this interval is far too short to understand in what extent human societies impact their environment. In order to study interactions between human activities and rivers and their fish assemblages over...

Apristurus nakayai sp. nov., a new species of deepwater catshark (Chondrichthyes: Pentanchidae) from New Caledonia

Samuel P. Iglésias
A new species of deepwater catshark (Pentanchidae) is described based on a single adult male measuring 676 mm TL that was collected at a depth of 953-1022 m on the Coriolis Bank off western New Caledonia in the southwestern Pacific Ocean. Within the genus Apristurus, the species belongs to the brunneus group whose members share a higher spiral valve count and the upper labial furrows are longer than the lower furrows. Apristurus nakayai sp. nov....

First observation of intersex in barbel Barbus callensis (Valenciennes, 1842) collected in Soummam River (Algeria)

Hafsa Djoudad-Kadji, Sihem Benslimane, Christine Chevalier, Belaïd Kadji, Jean-Marie Exbrayat & Mokrane Iguer-Ouada
The presence of intersexuality in a gonochoric species Barbus callensis (Valenciennes, 1842) collected between March and October 2010 in the Soummam River, Algeria, is reported using anatomical and histological investigations. A total of 16 out of 700 dissected specimens (2.28%) were macroscopically classified as intersex, i.e. characterized by the simultaneous presence of both male and female gonads in the same individual. Three different anatomical forms were observed: (1) two gonads with an ovary and a...

First records of Atherinella panamensis in the Central Mexican Pacific coasts

Edgar R. Sandoval-Huerta, Xavier Madrigal-Guridi, Adrián García-Meraz, Néstor I. Dimas-Mora, Omar Domínguez-Domínguez & Adrián F. González-Acosta
The southern Pacific Atherinella panamensis Steindachner, 1875 is reported in the Pacific Central Mexican Coasts for the first time. A total of 25 specimens (36.9 to 67.9 mm SL) were caught between December 10, 2010 and February 17, 2011 in two different localities of Lázaro Cárdenas, Michoacán, Mexico. The first documented record of the Panama silverside extends the northernmost distributional range of this species by 2,687 km and increases the number of silverside species known...

Premier signalement d’Aulotrachichthys sajademalensis (Kotlyar, 1979) à l’île de la Réunion (océan Indien)

Jean-Claude Quéro & Jérôme Spitz
Parmi les poissons récoltés en surface à l’île de La Réunion (océan Indien), suite à l’éruption volcanique du Piton de La Fournaise en avril 2007, se trouvait un petit spécimen (1,8 cm de longueur standard) d’Aulotrachichthys sajademalensis. Cette espèce de Trachichthyidae a été décrite d’après un spécimen capturé au banc de Saya de Malha (Kotlyar, 1979). Cette nouvelle observation étend vers le sud l’aire de répartition connue pour l’espèce.

Range extension of Egyptian sole Solea aegyptiaca (Soleidae: Pleuronectiformes), in the Red Sea

Bruno Chanet, Martine Desoutter & Sergey V. Bogorodsky
New collection of Egyptian sole, Solea aegyptiaca Chabanaud, 1927, from the Gulf of Suez (Red Sea, Egypt) confirm that this species is an anti-Lessepsian species. Migrations of teleostean fishes through the Suez Canal are discussed.

Note on the terminal nerve in chimaeroid fishes (Holocephali; Chimaeridae)

Martin Licht & Peter Bartsch
William Locy in 1905 on page 63 of his morphological and embryological account “On a newly recognized nerve connected to the fore-brain of selachians” mentions the “new nerve” or “supernumerary nerve” as it was termed before that time, tentatively traced upon dissection of the brain of Chimaera monstrosa. The terminal nerve as designated by Locy has never been mentioned for holocephalan fishes since, though new interest arose more recently with description of the terminal nerve...

First records of Epigonus denticulatus (Perciformes: Epigonidae) in the northern waters of Spain: northernmost occurrences in the eastern North Atlantic

Susana Ruiz-Pico, Juan Carlos Arronte, Antonio Punzón, Alberto Serrano, Francisco Velasco & Olaya Fernández-Zapico
Twenty-two specimens of pencil cardinal Epigonus denticulatus were collected by bottom trawl (364-639 m) in the Cantabrian Sea, Spain. These records represent a new northern limit for the distribution of E. denticulatus in the eastern North Atlantic.

Reproductive parameters of the commercially exploited deep-water shark, Deania calcea (Centrophoridae)

Rafaela Barros Paiva, Ana Neves, Vera Sequeira & Leonel Serrano Gordo
Little information is available on the reproductive parameters of the commercially exploited deep shark Deania calcea (Lowe, 1839). Samples were obtained from deep-water longlines operating at depths around 1450 m in the Portuguese continental slope between September 2008 and July 2009. Both the male and female reproductive tracts were morphologically and histologically analysed. Females were more numerous than males, which may be related to possible sex segregation by depth/geographical area and/or fishermen preference for females...

Blood cellular components in wild caught Muraena helena (Muraenidae)

Domagoj Ðikić, Duje Lisičić, Daria Skaramuca, Sanja Matić-Skoko, Pero Tutman, Vesna Benković, Anica Horvat Knežević, Ana Gavrilović & Boško Skaramuca
Wild caught moray eels, Muraena helena L. 1758, were collected in Adriatic Sea near Dubrovnik, Croatia. Blood cells were evaluated by Natt-Hericks and MGG stain. Mean haematocrit was 23.22 ± 3.13. RBC count was 4.007 ± 1.60 x 1011/L. Thrombocytes were present in four forms. Average WBC count was 3.37% of the total cell count. On average lymphocytes accounted for 15.05%, up to maximally 23% of WBC. Monocytes were least present (on average 4.59%). Basophiles...

First record of Polydactylus mullani (Polynemidae) from the Sultanate of Oman

Philippe Béarez, Sophie Kerneur & Hiroyuki Motomura
The Arabian blackspot threadfin, Polydactylus mullani, is an endemic species of the Arabian Sea, occurring along the Indian and Pakistani coasts. Its presence is recorded here for the first time at the south-western end of the Gulf of Oman. It could be that P. mullani was confused until now with Polydactylus sextarius as, until 2001, the former species was regarded only as a subspecies of the latter. However, P. mullani is not mentioned in any...

Variabilité morphologique des populations du genre Pseudophoxinus dans les eaux douces tunisiennes

Tahani Dkhil-Abbes & Mohamed Mejdeddine Kraiem
L’étude a été réalisée sur des populations du genre Pseudophoxinus (Bleeker, 1860) provenant de 15 sites différents, dans l’aire de distribution géographique de ce genre en Tunisie. Une analyse canonique discriminante (CAN-Disc) a été effectuée à partir de sept caractères morphométriques et sept caractères méristiques. Elle a permis de confirmer la présence de P. punicus et de P. callensis, ainsi que la probable absence de P. chaignoni au sein des populations échantillonnées. Cependant, il s’est...

Contributions to marine science by fishery observers in the French EEZ of Kerguelen

Nicolas Gasco
All-year round, seven fishing vessels operate in the French EEZ of Kerguelen Islands. Observers employed by TAAF collect data on board fishing vessels for management purposes. This paper is an overview of the observer’s scientific work and their important contribution to science from this remote area.

Registration Year

  • 2020
  • 2019
  • 2018

Resource Types

  • Data Paper


  • University of Graz
  • National Autonomous University of Mexico
  • National Museum of Natural History
  • Universidad Juárez Autónoma de Tabasco
  • El Colegio de la Frontera Sur