1,197 Works

Use of tide pools as a spawning site by the bocon toadfish Amphichthys cryptocentrus (Batrachoidiformes: Batrachoididae), state of Maranhão, Brazil

Glínia K. F. Coelho, Luly de A. Nogueira, Pâmela S. de Brito, Nivaldo M. Piorski & Jorge L. S. Nunes
This note reports the first record of Amphichthys cryptocentrus using tide pools on the beaches of the state of Maranhão, Brazil as a spawning site and nursery.

Threatened fish: Lentipes rubrofasciatus Maugé, Marquet & Laboute, 1992 (Gobiidae)

Philippe Keith & Marion Mennesson

Morphological and genetic variations of Diplodus vulgaris along the Tunisian coasts

Myriam Kaouèche, Lilia Bahri-Sfar, Ibtissem Hammami & Oum Kalthoum Ben Hassine
In order to characterize populations of Diplodus vulgaris (Geoffroy St.-Hilaire, 1817) along the Tunisian coasts and to test the prospective role of geographical barrier of the Siculo-Tunisian Strait, we performed a study of morphological and genetic variability of samples collected in six sites distributed on each side of the Strait. Two types of morphological descriptors, 25 truss elements and six complementary conventional linear measurements, and genetic markers (allozymes of four enzyme systems) were used. Multivariate...

Histological study of the median lingual dental plate of the Cretaceous fish †Palaeonotopterus greenwoodi (Teleostei: Osteoglossomorpha) from the Kem-Kem beds, Morocco

François J. Meunier, Didier Dutheil & Paulo M. Brito
We describe the histology of the lingual dental plate of an extinct Notopteridae, †Palaeonotopterus greenwoodi, from the Cenomanian Kem-Kem Beds in Morocco. The lingual dental plate is bulky. Its regular and more or less smooth crushing surface does not exhibit any teeth externally. The plate is composed of several superimposed layers of side-by-side teeth. The teeth are attached to each other by a small amount of cellular bony tissue that may contain some vascular canals....

The anatomy of the thyroid gland among “fishes”: phylogenetic implications for the Vertebrata

Bruno Chanet & François J. Meunier
A study on the structure of the thyroid gland of 288 vertebrate species, conducted both on 99 dissections and analysis of the literature, leads to propose the following interpretations: i) the presence of this gland is a synapomorphy of Vertebrata; ii) a compact gland is a synapomorphy of Gnathostomes; iii) a diffuse gland is a possible synapomorphy of Halecostomes; iv) several independent cases of concentration in a few lobes in several groups, like Scaridae, Scombridae...

The post-embryonic development of Amphiprion perideraion reveals a decoupling between morphological and pigmentation change

Pauline Salis, Natacha Roux, David Lecchini & Vincent Laudet
During coral reef fish life cycle, the young pelagic larvae colonize the reef. During such important ecological transition, larvae undergo metamorphosis consisting on important morphological, colour, physiological and behavioural changes. We investigated the post-embryonic development of Amphiprion perideraion Bleeker, 1855 larvae raised in captivity from 1 day post-hatching (dph) until 20 dph. To do so, we characterized larval growth, morphological changes and pigmentation ontogenesis. Interestingly, whereas most of the morphological changes are done from 3...

Distribution patterns of ocellated eagle rays, Aetobatus ocellatus, along two sites in Moorea Island, French Polynesia

Cécile Berthe, Viliame Pita Waqalevu, Lise Latry, Marc Besson, Franck Lerouvreur, Gilles Siu, Gaël Lecellier, Jodie L. Rummer, Frédéric Bertucci, Samuel Iglésias & David Lecchini
Elasmobranchs are critical to tourism industries worldwide. In French Polynesia, where ecotourism is the second most important industry, little is known about the spatiotemporal distribution of eagle rays. This study represents the first investigation into habitat use and behaviour of ocellated eagle rays (Aetobatus ocellatus) in French Polynesia focused on two sites with different levels of anthropogenic noise. Environmental variables and biological data were recorded over a one-year period to explore the distribution patterns of...

Effect of environmental change after the 2011 tsunami on the population dynamics of Japanese tubesnout Aulichthys japonicus (Gasterosteiformes)

Go Katayose & Takashi Asahida
The Japanese tubesnout Aulichthys japonicus Brevoort, 1862 is a small fish species, which lives in shallow coastal waters, especially in seagrass (Zostera spp.) beds. The fish is known for their unusual spawning behaviour of concealing their eggs in ascidians (Halocynthia roretzi). By studying the larval and juvenile fish fauna in a seagrass bed in southern Iwate, Japan since 2007, we observed that A. japonicus was a dominant species. On 11 March 2011, the seagrass bed...

Are mangroves important for reef fish on Mayotte Island (Indian Ocean)?

Rakamaly Madi Moussa
In order to understand the potential role of the mangroves of Mayotte Island for reef fishes, sampling was conducted monthly from April 2016 to April 2017 in three sites along a mangrove fringe: Bandrélé near fringing reef, Dzoumogné close to a river mouth and Malamani in a bay. Fishes were sampled using a fyke-net combined with visual census surveys (UVC) and eight environmental variables were recorded at each site to determine their relationship with the...

Some histological data of bone and teeth in the Rift Eelpout, Thermarces cerberus (Zoarcidae)

François J. Meunier & Isabelle Arnulf
The rift eelpout, Thermarces cerberus (Zoarcidae), is a deep-sea marine fish that inhabits the vicinity of the hydrothermal vents of the East Pacific Rise. Its skeleton is mineralized to a normal degree and is constituted of acellular bone as the majority of perciforms, to which it belongs. T. cerberus feeds on amphipod crustaceans and gastropods, and has thin sharp teeth constituted of an orthodentine cone with a thin external apical layer of enameloid. The histological...

A histological study of the lingual molariform teeth in Hyperopisus bebe (Mormyridae; Osteoglossomorpha)

François J. Meunier, Damien Germain & Olga Otero
The molariform teeth of the mormyrid fish Hyperopisus bebe display a cone of orthodentine overlaid at their tip by a thick layer of enameloid (= acrodine). The teeth are fixed on a cellular bony tissue. This organization is classical for an actinopterygian and fits with the pattern classically observed in other osteoglossiform fishes. The presence of plicidentine and the hyoid tooth and tooth-plate morphology of this species may be related with crushing feeding habits.

Swollen bones in jacks and relatives (Teleostei: Acanthomorphata: Carangidae)

Bruno Chanet
The Carangidae form one of the teleostean families having the most frequent cases of hyperostosis: these bony gall-like structures can develop in many places of their skeleton. The known cases of this condition are described and analysed in a phylogenetic context. However, the presence of these swollen bones remains for now enigmatic.

Fish domestication in aquaculture: reassessment and emerging questions

Fabrice Teletchea
Historically, aquatic products were derived from wild capture fishes. However, declining marine catches since the early 1990s, combined with an increasing demand for fish products, has created a strong impetus for aquaculture. By 2014, half of global seafood consumption originated from aquaculture. The rise of aquaculture production has relied mostly on the domestication of a growing number of teleost fishes. In total, 250 species belonging to 71 families have been farmed since 1950. Among the...

First record of Dactylopterus volitans (Dactylopteridae) in the Eastern English Channel

Kélig Mahé, Eric Foucher, Romain Elleboode, Samuel P. Iglésias & Alain Tetard
This is the first record of the flying gurnard Dactylopterus volitans (Linnaeus, 1758) in the Eastern English Channel. One specimen was caught on 24 November 2011 in the Bay of Seine. It measured 47 cm and weighed 840 g. Based on the sagittal otolith, this specimen was 4 or 5 years old. Another specimen has been observed in the Western English Channel by a fisherman of Granville on 10 October 2012.

Comparative cytogenetic studies of the Nototheniidae (Teleostei: Acanthomorpha) from the Indian (Kerguelen-Heard Plateau) and Atlantic (South Georgia, South Sandwich, Falkland/Malvinas, Bouvet Islands) sectors of the Southern Ocean

Marta Tomaszkiewicz, Mélyne Hautecoeur, Jean-Pierre Coutanceau, Céline Bonillo, Agnès Dettaï, Federico Mazzei, Laura Ghigliotti, Eva Pisano, Arnaud Couloux, Bruno Chanet, Guillaume Lecointre, H. William Detrich III, Guy Duhamel & Catherine Ozouf-Costaz
Comparative cytogenetics is a powerful tool that can be combined with molecular phylogenetics and morphological systematics to infer the evolutionary relationships among species. In this report we describe the karyotypes (including 5S and 28S ribosomal RNA gene positions) of ten species from three understudied genera of the family Nototheniidae (suborder Notothenioidei); five of the karyotypes (species underlined) are reported for the first time: Gobionotothen marionensis (Günther, 1880), G. acuta (Günther, 1880), G. gibberifrons (Lönnberg, 1905),...

Description of a new deep-sea Lantern Shark Etmopterus viator sp. nov. (Squaliformes: Etmopteridae) from the Southern Hemisphere

Nicolas Straube, Guy Duhamel, Nicolas Gasco, Jürgen Kriwet & Ulrich K. Schliewen
Lantern sharks (Etmopterus spp.) constitute a regular by-catch in longline fisheries conducted along the north-eastern Kerguelen Plateau shelf in depths of 600 to 1700 m. Kerguelen lantern sharks are morphologically close to E. granulosus, E. sp. B, South African E. cf. granulosus, and E. litvinovi. However, molecular phylogenetic analyses support the hypothesis that they represent a distinct cryptic species, which is in line with morphological characters separating the species from its Southern Hemisphere congeners. The new species is...

Biodiversity of the benthos off Kerguelen Islands: overview and perspectives

Nadia Améziane, Marc Eléaume, Lenaïg G. Hemery, Françoise Monniot, Arzhela Hemery, Mélyne Hautecoeur & Agnès Dettaï
The Kerguelen Plateau possesses a very diverse benthic fauna. Over the years, the number of species recorded from the Kerguelen has substantially increased. From 172 species reported by Arnaud (1974), the total number of species has increased dramatically to 735 (Jouventin et al., 1996) and then to 960 in the present study. This area is particularly vulnerable to human activities and global climate change. Coastal benthic ecosystems are likely to be heavily impacted. However, these...

The influence of the Rupununi portal on distribution of freshwater fish in the Rupununi district, Guyana

Lesley S. de Souza, Jonathan W. Armbruster & David C. Werneke
The Guiana Shield region in northern South America has a rich and diverse ichthyofauna with a high degree of endemism. The fauna of this region is shaped not only by the geology of the area but climatic events as well. The Rupununi district of southwestern Guyana is an area where seasonal rainfall floods a vast savanna. During the rainy season, this inundated savanna allows a connection between the Amazon and Essequibo Rivers that provides the...

Phylogenetic position and notes on the natural history of Pimelabditus moli Parisi & Lundberg, 2009 (Teleostei: Siluriformes), a recently discovered pimelodid catfish from the Maroni River basin

John G. Lundberg, Raphaël Covain, John P. Sullivan & Sonia Fisch-Muller
The recent description of a distinctive new pimelodid catfish, Pimelabditus moli Parisi {&} Lundberg, 2009, from the Maroni River basin of Suriname and French Guiana, added an unresolved taxon to the family. Here we include P. moli in ongoing molecular and morphological phylogenetic studies of the Pimelodidae. We sequenced > 7.5 KB of aligned bases from the nuclear rag1 and rag2 genes and the mitochondrial mt-rnr1, mt-rnr2 and mt-cyb genes. Results provide strong support for...

Foraging habitats of top predators, and Areas of Ecological Significance, on the Kerguelen Plateau

Mark A. Hindell, Mary-Anne Lea, Charles-André Bost, Jean-Benoît Charrassin, Nick Gales, Simon Goldsworthy, Brad Page, Graham Robertson, Barbara Wienecke, Malcolm O’Toole & Christophe Guinet
Avian and mammalian predators play a key role in the Kerguelen Plateau ecosystem, both with respect to structuring the marine community and its response to anthropogenic influences, such as climate change and commercial fisheries. A powerful way to determine regions of particular ecological importance is to identify Areas of Ecological Significance (AES): regions that are utilized by multiple predator species. Such concentrations of foraging activity are indicative of enhanced primary and/or secondary productivity. These are...

Body length estimation of the European eel Anguilla anguilla on the basis of isolated skeletal elements

Els Thieren, Wim Wouters, Wim Van Neer & Anton Ervynck
Using a large series of dry skeletons of modern European eel Anguilla anguilla (Linnaeus, 1758) from Belgium and the Netherlands, the relationship between fish length and individual bone measurements is investigated. The aim of the study is to provide adequate regression equations between both parameters. This methodology is relevant for both palaeoecological and ecological researches since isolated skeletal elements survive in large numbers on archaeological sites and in the stomach contents, faeces or regurgitations of...

Comments on a finding of Mobula mobular (Mobulidae) in the Adriatic Sea

Giambattista Bello, Lovrenc Lipej & Jakov Dulčić
A recent publication described the finding of a specimen of Mobula mobular in the Adriatic Sea and stated that it represented “the first documented occurrence” of this fish in this sea (Scacco et al., 2009). However, the presence of M. mobular in the Adriatic Sea was already well-known. A list of the many Adriatic records and reports on this chondrichthyan species is given.

Is the African armoured searobin (Peristedion cataphractum, Peristediidae) stock off the south Sicily and North African coasts a “unit stock”?

Teresa Bottari, Giandomenico Nardone, Paola Rinelli & Sergio Ragonese
Distribution, abundance, biological traits and growth of Peristedion cataphractum L., 1758 coming from two areas of the Strait of Sicily were analysed. The two investigated areas correspond to the north (A-area) and south (B-area) of the midline located between South Sicily and North Africa. Both published and new elaborated parameters were estimated from data gathered in autumnal experimental bottom trawl surveys; the surveys in the B-area, in particular, were carried out between 1997 and 2004....

A deepwater threadfin, Polydactylus longipes (Perciformes: Polynemidae), from Vanuatu: new record from the South Pacific

Hiroyuki Motomura, Patrice Pruvost & Romain Causse
A specimen of Polydactylus longipes, previously known only from three type specimens from the Philippines, was collected off Vanuatu at a depth of 300-360 m. This specimen is the first record of P. longipes from outside the Philippines, being an approximately 5000 km southeastward range extension from the type locality. The depth of capture revealed P. longipes to be the deepest occurring member of the family. Apparent morphological changes due to allometric growth are also...

History of whaling, sealing, fishery and aquaculture trials in the area of the Kerguelen Plateau

Guy Duhamel & Richard Williams
The exploitation of marine resources on the Kerguelen Plateau only began in 1790 (18th century) after the discovery of the northern Kerguelen Islands in 1772. Salted fur seal (Arctocephalus gazella) skins was the first product to be commercialized by Nantucket (USA) and London (UK) ship-owners, mainly on the Kerguelen Islands, and by the early 19th century the seal colonies were decimated. The sealing gangs shifted to extracting oil from the blubber of elephant seals (Mirounga...

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