424 Works

Diagnosing and solving the global crisis of fisheries: obstacles and rewards

Daniel Pauly
The multiple factors contributing to the crisis, which since the mid-1990s besets global fisheries, are presented along with key trends illustrating four manifestations of that crisis, i.e., (i) a declining world catch, (ii) increasing global fishing effort, (iii) declining catch per effort and profitability, and (iv) a three-way global expansion of fishing (geographic, bathymetric, taxonomic). The point is made that fisheries scientists and economists collectively know what is required to turn these trends around and...

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...

The presence of the seahorse Hippocampus patagonicus in the Argentine Sea based on the cytochrome b sequence of mitochondrial DNA

Diego C. Luzzatto, Rodrigo Sieira, María G. Pujol & Juan M. Díaz de Astarloa
This study aimed at sequencing the mitochondrial cytochrome b gene (cyt b) of seahorses morphologically identified as Hippocampus patagonicus Piacentino {&} Luzzatto, 2004 from the two known localities where the species occur in the Argentine Sea (San Antonio Oeste and Mar del Plata). Based on the lack of substitutions within cyt b found between the individuals of both localities, the geographical range of H. patagonicus was extended up to the Northern limit of the Argentine...

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...

First record of Kuhlia sauvagii Regan, 1913 (Perciformes) in Mayotte and Réunion islands, Western Indian Ocean

Pierre Feutry, Magalie Castelin, Henri Grondin, Corinne Cruaud, Arnaud Couloux & Philippe Keith
Kuhlia sauvagii Regan, 1913 was recently resurrected from synonymy with K. rupestris by morphological and meristic analyses. In this study, we sequenced the mitochondrial ND4 gene of these two species and used the results for molecular identifications among batches of Kuhlia. K. sauvagii, previously reported to be endemic in Madagascar, is reported here from Mayotte (Comoros) and Réunion (Mascarenes) islands, enlarging its geographical range in the Western Indian Ocean. The genetic identification method and dispersal...

A review of the amphidromous species of the Glossogobius celebius complex, with description of three new species

Douglass F. Hoese & Gerald R. Allen
Amphidromous species of the Glossogobius celebius complex found in lower reaches rivers of the eastern Indian Ocean and the western Pacific Ocean are reviewed. Glossogobius celebius is not as widely distributed as previously thought and is confined to the eastern Indian Ocean to eastern Indonesia. Three species are described as new species from Australia, New Guinea and various localities in the western Pacific. The species are distinguished on the basis of coloration, anal fin-ray and...

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...

Length-weight, length-length and a proposed empirical standard weight equations for the Italian endemic cyprinid species Sarmarutilus rubilio

Daniela Giannetto, Giuseppe Maio, Laura Pompei, Stefano Porcellotti & Massimo Lorenzoni
Length and weight data of 21,040 specimens of the Italian endemic species Sarmarutilus rubilio (Bianco & Ketmayer, 2014) were collected throughout the area of distribution of the species and used to cal- culate total length-weight (TL-W), standard length-total length (SL-TL), fork length-total length (FL-TL), and standard weight (Ws) equations. The SL-TL equation was TL = 1.153 SL + 4.121; the FL-TL equation was TL = 1.037 FL + 0.288. The log-transformed TL-W equation was: log10W...

Allozymic variability in European anchovy Engraulis encrasicolus ( L .) along the Moroccan coasts

Khalil Chahdi Ouazzani, Touria Benazzou & Malika Chlaida
Allozyme variation was used to investigate for the first time the genetic structure of European anchovies, Engraulis encrasicolus (Linnaeus, 1758), along the Moroccan coasts. A total of 420 individuals were collected at 11 sites during the anchovy spawning period of 2012. Eleven loci were tested, among them only LDH* [E.C:1.1.27] and PGM * [E.C:] were polymorphic. Statistical analysis results showed no significant differentiation between samples (overall FST = 0.0077, p = 0.13). Genotypic proportions were...

Long term monitoring of coral and fish assemblages (1983-2014) in Tiahura reefs, Moorea, French Polynesia

René Galzin, David Lecchini, Thierry Lison de Loma, Charlotte Moritz, Valeriano Parravicini & Gilles Siu
Coral reefs are one of the most diverse ecosystems on Earth and sustain millions of people worldwide. However, coral reefs are temporally dynamic and fragile systems subject to ever increasing disturbances of anthoropogenic and natural origins. Understanding the patterns and trajectories of changes through time is urgently needed to estimate the resilience of coral reefs. To ascertain these patterns, we depend on the availability of long-term datasets, which are seldom available. In this study, we...

Otolith shape differences between Micropogonias manni and M. altipinnis (Sciaenidae)

Lina-Maria Duque-Vélez, Philippe Béarez & Raphaël Cornette
Sagitta morphology is much used in sciaenid systematics, as well as in archaeological, paleontological and ecological studies. Although morphometric characteristics of sagitta (length, height, thickness, weight,…) are useful to discriminate some marine and freshwater species, they are not fully conclusive in the case of Micropogonias altipinnis and M. manni. In order to give new elements for characterizing and discriminating these species we propose here to apply the geometric morphometry technique to sagittae of these species...

The detection of weakly developed plicidentine in teleost teeth using 3D tomography

Damien Germain, Jorge Mondéjar-Fernández & François J. Meunier
The detection of weakly developed plicidentine in ground sections can be difficult, because these structures cannot always be resolved by analysing two-dimensional thin-sections. X-ray tomography followed by 3D virtual modelling allows the non-destructive study of the spatial morphology of these important structures. Here, we illustrate dentine folds in the pulp cavity of the teeth in three teleost fishes, Arapaima gigas (Osteoglossiformes), Hoplias aimara (Characiformes) and Lophius piscatorius (Lophiiformes), and add data from a lepisosteid, Lepisosteus...

Fishing at Qal’at al-Bahrain, archipelago of Bahrain, from the Early Dilmun (2200 BC) to the Middle Islamic period (13-16th centuries AD)

Justine Vorenger
Excavations have taken place at the site of Qal’at al-Bahrain in Bahrain, Arabo-Persian Gulf, since the 1950’s. They have revealed significant architectural remains and a rich assortment of material, including ceramics, metal objects, figurative representations, inscriptions, seals, and botanical and faunal remains, which include a large number of fish bones. Its exceptional stratigraphy, which extends from the Early Dilmun (ca. 2200 BC) to the Middle Islamic period (13-16th centuries AD), enables us to study and...

Fish community assemblages in relation to environmental variables in the Lefini River, middle Congo River basin (Republic of Congo)

Armel Ibala Zamba, Emmanuel Vreven, Victor Mamonekene & Jos Snoeks
This study, one of the few ecological investigations of fishes recently performed in Africa, was undertaken in the Lefini River basin, a large right bank affluent of the Congo River in the Republic of Congo. The study area comprised 12 ecological stations, spread along 103 km of the river. Each station was sampled eight times over a two-year period, with fishing following standardized methods utilizing five monofilament gill nets of 10, 12, 15, 20 and...

Amphidromous life cycle of Eleotris fusca (Gobioidei : Eleotridae), a widespread species from the Indo-Pacific studied by otolith analyses

Marion Isabelle Mennesson, Hélène Tabouret, Christophe Pécheyran, Eric Feunteun & Philippe Keith
Eleotris fusca is a widespread amphidromous fish found in the Indo-Pacific area. Its life cycle is characterised by a marine pelagic larval phase allowing the species to disperse in the ocean and then to recruit to remote island rivers. In order to examine its migratory history and pelagic larval duration (PLD), otolith microchemical and microstructural analyses were undertaken on 100 specimens collected in the rivers of four areas: Mayotte, Reunion Island (Indian Ocean), Vanuatu and...

Evidence of late migrant smolts of Atlantic salmon (Salmo salar) in the Loire-Allier System, France

Hélène Imbert, Patrick Martin, Jocelyn Rancon, Vincent Graffin & Sylvie Dufour
Smolts of Atlantic salmon Salmo salar of the Loire-Allier system have to perform an exceptional distance of 900 km to reach the ocean from the upstream spawning grounds, while being subjected to connectivity disruption induced by the presence of dams as well as fluctuating climatic conditions. In order to successfully perform their marine entry, smolts should reach the estuary within a limited suitable period. This study concerns smolt emigration dates from upper Allier, and arrival...

Three new species of Lentipes from Indonesia (Gobiidae)

Philippe Keith, Renny K. Hadiaty, Nicolas Hubert, Frédéric Busson & Clara Lord
Three new species of Lentipes (L. argenteus, L. ikeae and L. mekonggaensis), freshwater gobies, are described from streams of Sumatra, Java, Bali and Sulawesi (Indonesia). They differ from other species of the genus by a combination of characters including an urogenital papilla lacking lateral lobes and retractable into a sheath-like groove, the number of pectoral fin rays, the number of scales, tricuspid teeth in the upper jaw, and a specific body colour in males.

Emmelichthys marisrubri, a new rover from the southern Red Sea (Teleostei: Emmelichthyidae)

Ronald Fricke, Daniel Golani & Brenda Appelbaum-Golani
Emmelichthys marisrubri sp. nov. is described from three specimens, which were trawled off Eritrea in the southern Red Sea. The species is characterised by the spinous and soft-rayed portions of dorsal fin separated by a gap containing four short isolated spines, which are protruding over the dorsal surface of the body; depth of body 16.5-20.2% SL; lateral-line scales 80-83; dorsal-fin spines 12-13; dorsal-fin soft rays 8; pectoral-fin rays 18-20, total gill rakers 26-31. A revised...

A new species of Sicyopus (Gobiidae) from Java and Bali

Philippe Keith, Renny K. Hadiaty, Frédéric Busson & Nicolas Hubert
Sicyopus rubicundus n. sp., a sicydiine goby, is described from specimens collected in streams of Java and Bali (Indonesia). It differs from other species of this amphidromous genus by a combination of characters including a first dorsal fin with five spines in both sexes, a second dorsal fin with one spine and nine segmented rays, an anal fin with one spine and nine segmented rays, and a distinctive body colour in male.

Is hogfish Lachnolaimus maximus (Labridae) a diandric species?

Thierry Brulé, Virginia Elena Nóh-Quiñones, Julián René Torres-Villegas & Teresa Colás-Marrufo
Hogfish Lachnolaimus maximus (Walbaum, 1792) is the largest labrid in the Atlantic and a commercially important fish. In previous research, this fish has been defined as a monandric protogynous hermaphrodite, although characterization of hermaphroditism is particularly challenging in labrids. Examination of testicle structure is not always a wholly trustworthy method for distinguishing between diandric species (those with primary and secondary males) and monandric species (only secondary males). In some diandric species, morphological differences in the...

The relationship between Sardinella aurita landings and the environmental factors in Moroccan waters (21°-26°N)

Ayoub Baali, Najib Charouki, Khalid Manchih, Ismail Bessa, Ikram Elqoraychy, Mouna Elqendouci, Khadija Amenzoui & Ahmed Yahyaoui
The objective of this study is to assess the effects of environmental variations on the abundance of the round sardinella (Sardinella aurita, Valenciennes, 1847) in Moroccan waters (21°-26°N) using generalized additive models. The monthly variability of Sardinella aurita abundance in the south of Morocco is investigated using sea surface temperature (SST), upwelling index (UI) and chlorophyll-a (Chl-a) concentration from Global ARMOR3D L4 product, ESA Ocean Colour CCI and AquaMODIS satellite data between 2009 and 2016....

A new species of Schismatogobius (Teleostei: Gobiidae) from Halmahera (Indonesia)

Philippe Keith, Hadi Dahruddin, Gino Limmon & Nicolas Hubert
A new species of Schismatogobius, a freshwater goby, is described from Halmahera (Indonesia). It differs from other species belonging to the genus by a high percentage of genetic divergence in partial COI gene (652 bp) and by several characters, including the number of pectoral fin rays, the pattern of the ventral surface of the head, the pectoral fin colour pattern and the jaw length/head length ratio of male and female.

Invasion hotspots and ecological saturation of streams across the Hawaiian archipelago

Kristine N. Moody, Roderick B. Gagne, Heidi Heim-Ballew, Fernando Alda, Ernie F. Hain, Peter J. Lisi, Ryan P. Walter, Glenn R. Higashi, J. Derek Hogan, Peter B. Mcintyre, James F. Gilliam & Michael J. Blum
Species introductions are a widely recognized threat to global freshwater biodiversity. The proliferation of non-native species can result in the loss of native species through direct and indirect interactions with predators, competitors, pathogens and parasites. Thus identifying invasion hotspots and understanding the capacity of vulnerable ecosystems to absorb new invasions is fundamental to conserving native biodiversity and preventing further introductions. Here, we assess whether endemic biodiversity, land-use and human population density predict the location of...

The largemouth black bass (Micropterus salmoides): first record in the Neretva River delta, Adriatic drainage system of Croatia

Jakov Dulčić, Branko Dragičević, Pero Ugarković & Pero Tutman
The 10th October 2016, a specimen of Micropterus salmoides was caught by trammel net in the Mala Neretva River (Adriatic drainage system of Croatia). This is the first occurrence of the Largemouth black bass in this river, and by the way, in the hydrographic drainage system to the Adriatic Sea.

New insights into the chromosomal differentiation patterns among cichlids from Africa and Madagascar

Catherine Ozouf-Costaz, Jean-Pierre Coutanceau, Céline Bonillo, Hervé Mercot, Yves Fermon & Chantal Guidi-Rontani
To increase understanding of the chromosomal diversity among cichlid species, karyotypes of 19 species of Cichlidae belonging to 15 genera (Paratilapia polleni, Chromidotilapia guntheri guntheri, Hemichromis fasciatus, Steatocranus irvinei, Stomatepia pindu, Altolamprologus compressiceps, Julidochromis transcriptus, Neolamprologus tetracanthus, N. brevis, Gnathochromis permaxillaris, Eretmodus cyanostictus, Astatoreochromis alluaudi, Haplochromis callipterus, H. paludinosus, Nimbochromis livingstonii, N. polystigma, Pseudocrenilabrus multicolor victoriae, P. philander and Ctenochromis horei) were investigated for the first time. In spite of the variation in the karyotypes...

Registration Year

  • 2019

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