564 Works

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...

Four new species of Rainbowfishes (Melanotaeniidae) from Arguni Bay, West Papua, Indonesia

Kadarusman, Renny K. Hadiaty, Gilles Segura, Gigih Setiawibawa, Domenico Caruso & Laurent Pouyaud
Four new species of Rainbowfishes are described from the Arguni region. These species are allied to the species already known from the Bomberai Peninsula and the Bird’s Neck, namely Melanotaenia ammeri, M. irianjaya, M. kokasensis, M. parva and M. angfa. The new species M. urisa is characterised by a thin and elongated body, a long predorsal length, a short preanal length, a long and thin caudal peduncle, short fins and by relatively large eyes. In...

Sardinella aurita (Clupeidae) in Mar Chiquita coastal lagoon: morphological and DNA barcoding identification approaches

Ezequiel Mabragaña, Sergio M. Delpiani, Gabriela E. Blasina, Mariano González-Castro, Juan J. Rosso & Juan M. Díaz de Astarloa
Two specimens of Sardinella aurita were caught in Mar Chiquita coastal lagoon, Argentina, and identified by morphological and molecular features. The taxonomic status of the genus in the West Atlantic Ocean is not clear. Our results from DNA Barcoding are in accordance with those obtained with other molecular markers, which suggest conspecificity between S. aurita and S. brasiliensis.

Generic modelling tools for the assessment of marine populations

Sophie Mormede, Alistair Dunn & Matt Pinkerton
In the New Zealand EEZ, most fish stocks are managed using TAC limits. Much of the scientific advice for the management of these stocks and associated species was derived from analyses using generic or standardised software packages and modelling techniques. These modelling techniques have also been applied to several Antarctic fish populations through various CCAMLR working groups, including the setting for TAC of toothfish fishery. CASAL is an age- (or size-) structured fish stock assessment...

Major fishery events in Kerguelen Islands: Notothenia rossii, Champsocephalus gunnari, Dissostichus eleginoides – Current distribution and status of stocks

Guy Duhamel, Patrice Pruvost, Michel Bertignac, Nicolas Gasco & Mélyne Hautecoeur
The large-scale trawl exploitation targeting virgin stocks of marbled notothenia (Notothenia rossii) off the Kerguelen Islands occurred after the discovery by the Soviet Union scouting fishing fleet of the fishing grounds in the early 1970’s. The fishery shifted to icefish (Champsocephalus gunnari) and grey notothen (Lepidonotothen squamifrons) when overexploitation on the shelf and surrounding banks resulted in the sharp decline in the catches of marbled notothenia. The creation of the French EEZ in 1978 closed...

The Heard Island and McDonald Islands Marine Reserve and Conservation Zone – A model for Southern Ocean marine reserves?

Dirk C. Welsford, Andrew J. Constable & Gabrielle B. Nowara
Recognition of the unique and largely unmodified nature of the marine environment within the Australian EEZ around Heard Island and the McDonalds Islands led to the proposal for a marine reserve in 2001. The reserve was designed based on all scientific data available at the time, including data on biota and geophysical features of the area, the principles of comprehensiveness, adequacy and representativeness of the protected areas, as well as providing control areas for assessing...

Variations du régime alimentaire du rouget de roche, Mullus surmuletus (Mullidae) des côtes de l’est de l’Algérie

Farid Derbal, Sabri Slatni & M. Hichem Kara
Le régime alimentaire du rouget de roche, Mullus surmuletus (L., 1758) des côtes de l’est de l’Algérie a été étudié au cours d’un cycle annuel. L’analyse qualitative et quantitative a été réalisée chez les juvéniles et les adultes et en fonction des différentes saisons d’échantillonnage. Les contenus digestifs de 380 spécimens, de longueur totale comprise entre 12,2 et 28,8 cm et de poids total compris entre 21,5 et 321 g, ont été examinés entre janvier...

Embryonic and yolk-sac larval development of saddled bream, Oblada melanura (Sparidae)

Nenad Antolović, Valter Kožul, Roman Safner, N. Glavić & Jakša Bolotin
The embryonic and yolk-sac larval development of laboratory-reared saddled bream Oblada melanura (Linnaeus, 1758) is described. The fertilized eggs were pelagic and transparent with one oil globule with a mean diameter of 0.833 ± 0.055 mm and a range from 0.755 to 0.928 mm. Embryonic development lasted 32 h 30 min at 21.9 ± 0.4ºC. Newly hatched yolk-sac larvae were 1.992 ± 0.111 mm in length. The yolk-sac was completely absorbed after 56 hours, when...

Premier signalement de Salaria fluviatilis dans le lac Léman

Jean-Claude Raymond, Audrey Bolard & Henri Persat
En mai 2010, une campagne de pêches électriques dans trois secteurs littoraux espacés de plusieurs dizaines de kilomètres le long de la rive française du lac Léman a abouti à la capture systématique de blennies fluviatiles, Salaria fluviatilis (Asso,1801), dont c'est le premier signalement dans le lac.

“Whale Shark Expedition”: Observations on Rhincodon typus from Arta Bay, Gulf of Tadjoura, Djibouti Republic, Southern Red Sea

Danilo Rezzolla & Tiziano Storai
The present work is the report of two ecotouristic expeditions carried out in the Gulf of Tadjoura (Djibouti Republic, Southern Red Sea) and having as main objectives a contribution to the increasing of biological and ecological knowledge about whale shark Rhincodon typus (Smith, 1828) in these waters by means of observations and photo-identification tools. The survey was conducted for five days in January-February 2007 and for six days in January 2009, recording a total of...

The family Moridae (Gadiformes) from the Cape Verde Islands (eastern-central Atlantic Ocean), with first record of Physiculus cyanostrophus

José A. González, Oksana Tariche, José I. Santana, Antonio M. García-Mederos, Víctor M. Tuset, Sebastián Jiménez & Manuel Biscoito
An account of the species of the family Moridae from the Cape Verde Islands is given. Physiculus cyanostrophus Anderson and & Tweddle, 2002 and possible new species of this genus are recorded for the first time from the Cape Verdes, which brings to six the number of morid species recorded for the area. The presence of Gadella imberbis (Vaillant, 1888) is confirmed in this archipelago. Available data on distribution, habitat, morphometry and reproduction of the...

Premier signalement de Pontinus kuhlii (Scorpaenidae) en Tunisie (Méditerranée sud-occidentale)

Lluís Mercader & Antoni Garcia-Rubies
Une rascasse du large, Pontinus kuhlii (Bowdich, 1825), de 375 mm LT, a été capturée le 29 juillet 2009 à la palangre de fond à une profondeur de 90 m près des îles La Galite, à 18 milles au nord de la Tunisie et 90 milles au sud de la Sardaigne. Cette mention constitue le premier signalement de cette espèce sur la côte tunisienne où le spécimen pêché est le plus grand prélevé jusqu’à ce...

Parallel evolution in ichthyophagous annual killifishes of South America and Africa

Wilson J.E.M. Costa
Morphological characters of two lineages of aplocheiloid annual killifishes containing predatory species feeding on sympatric congeners were analysed under a phylogenetic framework. They are the South American rivulid genus Austrolebias and the African nothobranchiid genus Nothobranchius. Independent phylogenetic analyses of morpho- logical characters indicated several apomorphic conditions homoplastically occurring in ichthyophagous species of both genera. These character state transformations may be related to the evolution of ichthyophagous habits. Eleven of these convergent characters are concentrated...

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 Sternopygidae, Japigny kirschbaum (Gymnotiformes), were caught in three rivers of French Guiana (Approuague, Mana, Maroni). This species, characterized by alternating large wide dark and vertical bands on the whole body and a scapular foramen, is considered as belonging to a new genus in the Eigenmanninae subfamily. As the other genus of this subfamily (Archolaemus, Distocyclus, Eigenmannia and Rhabdolichops) it has three radials, the third resulting from the fusion of radials...

Morphological abnormality in the longnose stingray Dasyatis guttata (Myliobatiformes: Dasyatidae) in the Colombian Caribbean

Andrea Ramírez-Hernandez, Paola Palacios-Barreto, Juan Diego Gaitán-Espitia, Francisco Reyes & John Ramírez
Morphological abnormality in the rostral cartilage of the longnose stingray Dasyatis guttata (Bloch & Schneider, 1801) is documented for the first time in a male specimen captured by artisanal fisheries on the North coast of the Colombian Caribbean.

Notes on the feeding habits of the skate Rioraja agassizi (Chondrichthyes, Rajidae) off southeastern Brazil

Aline F. Pasquino, Teodoro Vaske-Júnior, Otto B. F. Gadig & João P. Barreiros
Feeding habits of the skate Rioraja agassizi were analyzed in southeastern Brazil from samples obtained along São Paulo coast. A total of 258 specimens were examined, ranging between 96 and 532 mm total length. About 57.85% were females and 42.15% were males, resulting in a 1:1.37 sex-ratio to females. From 223 stomachs collected (94 males and 129 females) empty stomachs represented only 1.4%. Nine prey categories were identified: Polychaeta, Copepoda, Cumacea, Isopoda, Gammaridea, Dendrobranchiata, Brachyura,...

Rodlet cells in the alimentary tract of three genera of lizardfishes (Synodontidae, Aulopiformes): more on these enigmatic “gate-guards” of fishes

Lev Fishelson, Barry C. Russell, Daniel Golani & Menachem Goren
Rodlet cells (RCs) of the alimentary tract were studied in lizardfishes (Synodontidae) of the three major genera: Synodus, Trachinocephalus and Saurida, collected from the Mediterranean, the Red Sea, the South-African coast and the Great Barrier Reef (GBR), Australia. In the studied species two forms of RCs were revealed: one elongated, resembling those previously described from other fishes; and a second, bulbous in form, which was discovered in two species only, Saurida filamentosa and S. argentea...

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...

Interannual biomass changes and life strategies of Subantarctic zooplankton in the Kerguelen ecosystem: an overview of the consequences in energy transfer to higher trophic levels

Patrick Mayzaud, Yves Cherel & Philippe Koubbi
The zooplankton communities of the Kerguelen ecosystem can be divided into the inshore, Morbihan Gulf and the shelf systems. Plankton in the Gulf displayed a high biomass and a strong seasonality with winter lows and spring and summer highs. On the shelf, the seasonality is similar but with lower levels of biomass. Zooplankton diversity is very low in the Gulf and showed an increase in species number towards oceanic waters. Energy transfer through the trophic...

Oceanic post-larvae of Sicyopterus japonicus

Shun Watanabe, Midori Iida, Seishi Hagihara, Hiromitsu Endo, Keiichi Matsuura & Katsumi Tsukamoto
The oceanic early life of Sicydiinae gobies has remained mysterious although considerable knowledge has been accumulated about their freshwater life. Two marine post-larvae of Sicyopterus japonicus, were collected by otter trawl in the ocean off Shikoku, Japan on 18 July and 22 August 2007. These specimens were identified as S. japonicus using meristic characters and the 16S ribosomal RNA mitochondrial gene, which were compared to S. japonicus adults and two other species of Sicydiinae gobies....

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...

Osteology and relationships of Prognathoglossum kalassyi gen. and sp. nov. (Teleostei, Osteoglossiformes, Pantodontidae) from the marine Cenomanian (Upper Cretaceous) of En Nammoura (Lebanon)

Louis Taverne & Luigi Capasso
The osteology of Prognathoglossum kalassyi, an osteoglossiform teleostean fish from the marine Cenomanian of En Nammoura in Lebanon, is described in details. This fish exhibits an important prognathism. The frontal is broad and short. The temporal fossa is located very laterally on the braincase. There is a small postfrontal behind the frontal. The parietal forms the dorsal border of the temporal fossa. The saccular-lagenar bulla is hypertrophied. This series of specialized characters is shared by...

Threatened fish: Cottus petiti Bǎcescu & Bǎcescu-Meşter, 1964 (Cottidae)

Stéphane Lefebvre, Sylvain Richard, Dominique Beaudou & Gaël P.J. Denys
Cottus petiti is a critically endangered cottid fish which is endemic from the Lez River in Southern France.

A third European species of grayling (Actinopterygii, Salmonidae), endemic to the Loire River basin (France), Thymallus ligericus n. sp.

Henri Persat, Steven Weiss, Elsa Froufe, Giulia Secci-Petretto & Gaël P.J. Denys
Loire grayling was already known to belong to a distinct lineage, compared to other European population, according to molecular data (enzymatic polymorphism, mtDNA sequencing and microsatellites). In this paper, we consider this lineage as a new species, Thymallus ligericus n. sp., which is endemic to the Loire drainage (France). Compared with the other species, T. ligericus n. sp. is characterized by a more elongated body, the presence of a pointed snout and a strait or...

First record of a Ponto-caspian Knipowitschia species (Gobiidae) in the Carpathian basin, Hungary

Béla Halasi-Kovács, László Antal & Sándor Alex Nagy
A specimen of the Caucasian dwarf goby Knipowitschia caucasica (Berg, 1916) was collected in northeast Hungary from the epipotamic section of the River Szamos in 2009. This is the first record of the Knipowitchia genus in the Carpathian basin and also the farthermost freshwater locality from the estuary of the Black Sea, giving fresh information on the dispersion of the Ponto-Caspian Gobiid species in the Danube drainage.

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Affiliations

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