428 Works

Ultrasound evidence of fetal resorption in the yellow stingray, Urobatis jamaicensis (Urotrygonidae)

Tess C. Lesniak, Aaron E. Schirmer & Charles R. Knapp
Ultrasound technology was used to document fetal resorption in three pregnant yellow stingrays, Urobatis jamaicensis (Cuvier, 1817), at the John G. Shedd Aquarium, Chicago, IL, USA. Copulation for the three focal females in this study occurred from 30 April 2010 through 16 May 2010. Ultrasounds were performed monthly until females were confirmed pregnant and during the last three months of gestation. Mothers were confirmed pregnant on both their second and four-month ultrasounds. On their five-month...

The Harttiini (Siluriformes, Loricariidae) from the Guianas: a multi-table approach to assess their diversity, evolution, and distribution

Raphaël Covain, Sonia Fisch-Muller, Juan I. Montoya-Burgos, Jan H. Mol, Pierre-Yves Le Bail & Stéphane Dray
The Harttiini are a tribe of Loricariinae poorly characterized morphologically. Within the Guianas (French Guiana, Suriname, and Guyana), six valid species were recognized, including five Harttia, and the monotypic Harttiella crassicauda. Recent investigations conducted during the last decade by the authors and their co-workers, revealed several unidentified populations of Harttiini. Using a multivariate and multi-table approach unifying morphometry, genetics through DNA barcodes, and ecology-distribution of all populations and species, the global diversity and main evolutionary...

Centrodraco fidelis (Draconettidae), a new deepwater dragonet species from the southern Loyalty Ridge, southwestern Pacific Ocean

Ronald Fricke
Centrodraco fidelis sp. nov. is described from three specimens, which were collected on the southern Loyalty Ridge (New Caledonian EEZ) during the oceanographic cruise EXBODI. The species is characterised by: 14 rays in the second dorsal fin; 13 rays in the anal fin; first dorsal fin with the second spine elongate and fila- mentous in the male; second dorsal fin very low, without filaments in the male; opercular spine 1.8-2.4 in subo- percular spine; body...

Revision of vernacular names for the freshwater fish of French Guiana

Pierre Grenand, Jean Chapuis, André Cognat, Antonia Christinoi, Damien Davy, Françoise Grenand, Michel Jégu, Philippe Keith, Emmanuel Martin, François Nemo, Hélène Pagezy & Pierre-Yves Le Bail
The fish fauna of French Guiana is one of the best described in the geographical area covering the Guiana Shield. Paradoxically, however, there is no summary document validated by ethnologists and specialized linguists that links the scientific names of the fish of this area to their vernacular names from the different language groups. In this paper, we compile the presently existing data on species and vernacular names collected over several decades in Creole, Amerindian (Kali’na,...

The benthic and pelagic phases of Muraenolepis marmorata (Muraenolepididae) off the Kerguelen Plateau (Indian sector of the Southern Ocean)

Guy Duhamel, Charlotte Chazeau & Romain Sinegre
Muraenolepis marmorata life cycle is poorly investigated. This benthic species occurs mainly on the shelf slope and deep-sea as juvenile and adult stages but its early life is strictly pelagic off the Kerguelen Plateau. The upper layers (0-500 m) of the pelagic waters off the shelf are used by fingerlings both day and night during summertime. Dense aggregations (swarms) are sometimes observed by echo sounder (gas swim bladder detection) then have been confirmed by midwater...

First record of the Lessepsian species Hemiramphus far (Hemiramphidae) in Italian waters

Manuela Falautano, Luca Castriota, Pietro Battaglia, Teresa Romeo & Franco Andaloro
Several specimens of the Lessepsian species Hemiramphus far (Forsskål, 1775) were caught by fishermen in Lampedusa Island (Straits of Sicily) in January and August 2013. Their morphometric and meristic characteristics, as well as diet observations, are reported. These findings represent the first documented record of this species in Italian waters and are the missing link in its migration pattern from the eastern Mediterranean Basin to the western one.

Ecomorphology and diet of two species of Acestrorhynchus from Brazilian Northeast

Elãine C. dos S Dourado, Jorge L.S. Nunes & Nivaldo M. Piorski
Acestrorhynchus falcatus (Bloch, 1794) and A. heterolepis (Cope, 1878) are two species frequently found in rivers from Baixada Maranhense, Maranhão State, northeastern of Brazil. The ecomorphological adaptations of these species were studied based on a collection of 445 specimens using morphometric tools. Seventeen landmarks were defined on the lateral side of the individuals and digitalized by the TPS Dig program. The data matrix was submitted to a Relative Warps Analysis (RWA) and a Canonical Variables...

Osteometry and size reconstruction of the Indian and Pacific Oceans’ Euthynnus species, E. affinis and E. lineatus (Scombridae)

Anaïs Marrast & Philippe Béarez
Two neritic species of scombrids (Euthynnus affinis and E. lineatus) from the Indo-Pacific and the Eastern Pacific are today classed as commercially important. They have long been exploited and are common finds on coastal archaeological sites. Size reconstruction from isolated bones is interesting for both biologists and archaeologists. In archaeology, these studies make it possible to highlight fishing strategies. Therefore, we built an osteometric model for these two species, using 31 specimens of E. affinis (FL: 274 mm...

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.

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...

A genetic method to differentiate Petromyzon marinus ammocoetes from those of the paired species Lampetra fluviatilis and L . planeri

Maria C. Urdaci, Catherine Taverny, Anne-Marie Elie & Pierre Élie
Petromyzon marinus and Lampetra sp. are protected by international conventions (Bern, 1979; Habitats directive, 1992). To estimate the abundance, and thus the precariousness of each population, it is advisable to distinguish the larvae of each species, because they may use the same environments in rivers. However, these larvae were indistinguishable on morphological criteria (oral disk, pigmentation, myomeres,…). We used a molecular method for discriminating between P. marinus and Lampetra sp. A 560 bp DNA fragment...

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...

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...

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...

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...

Reproduction et régime alimentaire de Trigloporus lastoviza (Triglidae) dans le golfe de Tunis (Méditerranée occidentale)

Leila Ben Jrad, Rafika Fehri-Bedoui, Saoussen Ben Slama & Oum Kalthoum Ben Hassine
La reproduction et le régime alimentaire de Trigloporus lastoviza (Bonnaterre, 1788), espèce de triglidés commune des côtes tunisiennes, ont été étudiés de juin 2007 à mai 2008 dans le golfe de Tunis. Pour l’étude de la reproduction, 688 individus (10,6 cm < Lt < 26 cm) dont 478 femelles et 210 mâles ont été examinés. Le suivi mensuel de l’indice gonadosomatique (IGS) et de la maturité des gonades a montré que la période de maturation...

Diet of striped sea bream Lithognathus mormyrus (Sparidae) from eastern central Adriatic Sea

Mate Šantić, Antonella Paladin & Gordana Elez
The diet of striped sea bream, Lithognathus mormyrus (Linnaeus, 1758), from the central Adriatic Sea, was investigated with respect to fish size and seasons. Stomach contents of 524 specimens, total length (TL) from 12.8 to 31.7 cm, collected by trammel bottom nets and gill nets from January to December 2008, were analysed. The overall percentage of empty stomachs (17.7%) evidenced variation with seasons, maximum during winter (30.0%) and minimum during summer (8.3%). The prey belong...

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...

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...

The management of the natural marine reserve of the Terres australes françaises (French Southern Lands)

Axel Falguier & Cédric Marteau
The national marine and terrestrial nature reserve of the Terres australes françaises was created in October 2006. It covers 23 000 km² of land and sea and is the largest nature reserve in France. It encompasses 11 693 km² of the territorial sea (12 nm from the coast) of Crozet and Kerguelen archipelagos, as well as the entire extent of the territorial seas of Amsterdam and Saint-Paul islands. A management plan has been drafted for...

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

SIMPA – A tool for fisheries management and ecosystem modeling

Patrice Pruvost, Alexis Martin, Gaël P.J. Denys & Romain Causse
Biodiversity studies produce a large amount of data. Few are well-documented, compiled, readily available and easily accessible. The development of a specific database for the Kerguelen Plateau is an important step to provide data and analyses for supporting research and fisheries management. SIMPA is a database which covers all data from MNHN scientific expeditions, collections and fisheries from the French Sub-Antarctic Territories. The use of reference tables and standardized computer language procedure open the data...

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...

Developing a precautionary ecosystem approach to managing fisheries and other marine activities at Heard Island and McDonald Islands in the Indian Sector of the Southern Ocean

Andrew J. Constable & Dirk Welsford
Conservation of marine biodiversity and sustainable use of marine resources in the vicinity of Heard Island and McDonald Islands (HIMI) have been important goals for the Australian Government since 1980 when it signed the Convention on the Conservation of Antarctic Marine Living Resources. The evolving marine policy, legal and regulatory framework within Australia, combined with its international obligations, have provided a strong foundation for the precautionary, ecosystem based approach to achieving its goals for managing...

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