428 Works

A goby-fry fishery in the northern Colombian Pacific Ocean

Gustavo A. Castellanos-Galindo, Gian Carlo Sanchez, Beatriz S. Beltrán-León & Luis Zapata
Migrations between freshwater and marine environments are a common strategy among gobies of the Sicydiinae sub-family. Sicydiinae post-larvae occur in high density to the extent of supporting artisanal fisheries. Here, we document for the first time in the tropical eastern Pacific Ocean (Colombia), an artisanal fishery based on sicydiine post-larvae (Sicydium salvini) returning to relatively short and steep rivers of the coast. The migration and harvesting is comparable to that of sicydiines elsewhere in the...

Influence of salinity on larval development of Sicyopterus lagocephalus (Pallas, 1770) (Gobioidei)

Céline Ellien, Pierre Valade, Jérôme Bosmans, Laura Taillebois, Nils Teichert & Philippe Keith
The widely distributed amphidromous goby Sicyopterus lagocephalus needs drastic change of habitat to fulfil its life-cycle: adults live and spawn in rivers, where eggs hatch in pro-larvae that have to reach the sea in a narrow temporal scale, to acquire marine characteristics, and begin their oceanic dispersal as planktonic larvae. Post-larvae return to rivers where they recruit and grow to the adult reproductive stage. Such a life-cycle raises the question of salinity changes between these...

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....

Performance across extreme environments: comparing waterfall climbing among amphidromous gobioid fishes from Caribbean and Pacific Islands

Heiko L. Schoenfuss, Takashi Maie, Sandy M. Kawano & Richard W. Blob
Amphidromous gobioid fishes have colonized streams on tropical and subtropical volcanic islands across the globe. Such streams are often characterized by steep gradients, high velocity currents, and even waterfalls as in-stream obstacles; however, the ability to climb waterfalls has evolved in many goby species, allowing juveniles returning from the ocean to penetrate upstream reaches. Past studies of Hawaiian gobioid fishes have identified two functionally differ - ent climbing techniques that were characterized by differing kinematics:...

Reproductive biology of Okinawan amphidromous gobies

Nozomi Yamasaki, Masashi Kondo, Ken Maeda & Katsunori Tachihara
Reproductive biology and early development of three amphidromous gobies (Sicyopterus japonicus, Awaous melanocephalus, and Stenogobius sp.) were investigated in streams on Okinawa Island in southern Japan. Gonad examination, observation of spawning habits, and seasonal occurrence of newly hatched drifting larvae suggested the following: S. japonicus and Stenogobius sp. mature at approximately 40 mm and 35 mm in standard length (SL), respectively; A. melanocephalus matures at approximately 40 mm SL, but the smallest parent observed at...

Dispersal of land-locked larval Ryukyu-ayu, Plecoglossus altivelis ryukyuensis, in the Fukuji Reservoir, Okinawa Island

Tatsuya Kawakami & Katsunori Tachihara
The dispersal of larval land-locked ryukyu-ayu, Plecoglossus altivelis ryukyuensis , which originated from an amphidromous form on amami-oshima island, was investigated from November 2000 to april 2001 in the freshwater Fukuji reservoir. a total of 232 larvae were collected at three stations at different distances from the mouth of the San- numata river. They were most abundant at the station closest to the San-numata river (Station1; 76.3% of total catch) and their distribution in the...

Range extension of Gasteropelecus sternicla (Characiformes) for three coastal river basins of the Eastern Amazon region as well as for the Itacaiunas River drainage of the Tocantins River basin

Erick C. Guimarães, Felipe P. Ottoni, Pâmella S. de Brito, Nivaldo M. Piorski & Jorge L.S. Nunes
The geographic distribution of Gasteropelecus sternicla (Gasteropelecidae) is herein extended for three coastal river basins of the Eastern Amazon region, in the Maranhão State, northeastern Brazil. In addition, the species is recorded for the first time in the Itacaiunas River drainage of the Tocantins River basin, Pará State, northern Brazil. Some meristic data and information about the occurrence of these species in the other Brazilian states are provided.

Dietary comparison of pike-perch, Sander lucioperca (Linnaeus, 1758) and catfish, Silurus glanis Linnaeus, 1758 in Sidi Salem dam reservoir (Tunisia)

Houda Djait, Lilia Bahri-Sfar, Houcine Laouar, Néjiba Missaoui & Oum Kalthoum Ben Hassine
Sidi Salem dam (Northern Tunisia) hosts two introduced predatory fish species: the pike-perch, Sander lucioperca, and the catfish, Silurus glanis. We examined the stomach contents of 162 S. glanis and 547 S. lucioperca specimens sampled along two years from four different stations in the dam reservoir. Both species were found to feed mainly on teleost fishes, with the cyprinids Sarmarutilus rubilio and Scardinius erythrophthalmus as the main preys. One species of crustacean and insect larvae...

Étude de l’infestation par des larves d’Anisakidés de trois espèces de poissons d’intérêt économique en Mauritanie

Sidi Khlifa, Elisabeth Faliex, Pierre Sasal & René Galzin
Les enjeux économiques liés à la Zone économique exclusive mauritanienne en ce qui concerne la pêche sont très importants. Parmi ceux-ci, figure la possibilité d’exporter du poisson d’une qualité sanitaire irréprochable vers l’Europe. Cependant, certaines des espèces exportées sont susceptibles d’héberger des parasites de la famille des anisakidés (nématodes), pouvant créer un risque sanitaire pour le consommateur. Nous nous sommes intéressés à trois de ces espèces, la sardine, Sardina pilchardus, le chinchard, Trachurus trachurus et...

New records of non-indigenous fishes (Perciformes and Tetraodontiformes) from the Canary Islands (north-eastern Atlantic)

Raül Triay-Portella, José G. Pajuelo, Pablo Manent, Fernando Espino, Raquel Ruiz-Díaz, José M. Lorenzo & José A. González
We report the collection of specimens of Paranthias furcifer (Serranidae), Abudefduf hoefleri (Pomacentridae), Acanthurus bahianus, A. chirurgus, A. coeruleus (Acanthuridae), and Cantherhines pullus (Monacanthidae) as first records for these tropical and subtropical species from the Canary Islands (north-eastern Atlantic). Most of these records coincide with the presence of oil platforms towards and within the Port of Las Palmas. Regarding the management of the arrival of warm-affinity fish species, it would be necessary to implement control...

A new dwarf cichlid (Perciformes) from Nigeria

Anton Lamboj
Pelvicachromis silviae, a new cichlid species, is described. It differs from congeners by unique col- oration of females and a combination of morphological characters, e.g. greater body depth, shorter snout length, greater eye orbit diameter and several other meristic parameters. The species occurs in the lower Niger River system and seems to represent within the genus a closer relative to P. subocellatus.

Histological distinction between immature and regenerating females and its effect on maturity ogive estimation in three tropical hermaphroditic groupers

Thierry Brulé & Teresa Colás-Marrufo
Accuracy of the muscle bundle criterion is analysed to distinguish regenerating ovaries from immature ones in three commercially important hermaphroditic grouper species from the southern Gulf of Mexico: red grouper Epinephelus morio (Valenciennes, 1828); black grouper Mycteroperca bonaci (Poey, 1860); and gag Mycteroperca microlepis (Goode & Bean, 1880). The presence of muscle bundles in ovaries is a generally accurate criterion for distinguishing between regenerating and immature females in these species. However, reproductively inactive specimens could...

On the presence of Petromyzon marinus in Oued Moulouya (Morocco)

M. Clavero, B. Adrados, J. Calzada & M. Jácome-Flores
The sea lamprey (Petromyzon marinus Linnaeus, 1758) has a vast distribution area, including both shores of the Northern Atlantic and the Mediterranean Sea. It is commonly assumed to be present in Morocco, but the only specific records of the sea lamprey in the country come from the first half of the 20th and are exclusive to the Atlantic coast. Here we report the presence of adult sea lampreys in Oued Moulouya, the largest of the...

A redescription of Stiphodon pulchellus (Herre, 1927) (Gobiidae: Sicydiinae)

Ken Maeda, Tetsuo Yoshino & Katsunori Tachihara
Stiphodon pulchellus (Herre, 1927) is redescribed based on 29 specimens collected in the Philippines. In addition, a neotype is designated using a specimen collected by Herre near the type locality (Dumaguete, Negros Oriental) and identified by him. Stiphodon olivaceus Watson & Kottelat, 1995 is considered to be a junior synonym of S. pulchellus. Despite being strikingly similar to Stiphodon imperiorientis, S. pulchellus can be distinguished by the size, number, and arrangement of black spots on...

A new species of amphidromous goby, Stiphodon alcedo, from the Ryukyu Archipelago (Gobiidae: Sicydiinae )

Ken Maeda, Takahiko Mukai & Katsunori Tachihara
A new goby species, Stiphodon alcedo , is described from 27 specimens collected in Okinawa and iriomote islands of the ryukyu archipelago, Japan. This species can be distinguished from its congeners by having a pointed, but not filamentous, first dorsal fin in males, nine soft-rays in the second dorsal fin, 15-17 rays in the pectoral fin, the number of teeth, and unique sexually dimorphic colouration. The new species is considered to have recently colonised the...

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...

Annotated checklist of the freshwater fishes of Suriname

Jan H. Mol, Richard P. Vari, Raphaël Covain, Philip W. Willink & Sonia Fisch-Muller
Data derived from the literature supplemented by examination of specimens in collections show that 481 species of fish live in the fresh and brackish inland waters of Suriname, with 394 of these restricted to fresh waters. These 481 species represent 16 orders and 64 families. Orders with the largest numbers of freshwater species in the Surinamese inland fish fauna are the Siluriformes (157 species), Characiformes (147 species), Perciformes (40 species), Gymnotiformes (21 species) and Cyprinodontiformes...

A taxonomic review of Satanoperca (Teleostei: Cichlidae) from French Guiana, South America, with description of a new species

Sven O. Kullander
The new species Satanoperca rhynchitis occurs in French Guiana in the Oyapock, Approuague, Comté, Kourou, Sinnamary and Iracoubo river drainages. It is distinguished from congeneric species in particular by lower meristics and a longer snout, probably also by red lips in life. Samples of Satanoperca from Amapá state in Brazil fall into two groups, one probably representing the Amazonian S. jurupari, and the other resembling S. rhynchitis but with shorter snout. Species assignation of Amapá...

Molecular evidence for the paraphyly of Pseudancistrus sensu lato (Siluriformes, Loricariidae), with revalidation of several genera

Raphaël Covain & Sonia Fisch-Muller
The genus Pseudancistrus is widely distributed in rocky, fast-flowing habitats of rivers draining all sides of the Guiana Shield and the northern slope of the Brazilian Shield. Initially diagnosed as having an “interoperculum” weakly evertible and lacking elongate odontodes, the definition of Pseudancistrus was subsequently expanded to include species with long, evertible cheek odontodes. Within Pseudancistrus sensu lato were included the already available genera Guya­nancistrus and Lithoxancistrus. To evaluate the relevance of such a grouping,...

Identity of Hypostomus plecostomus (Linnaeus, 1758), with an overview of Hypostomus species from the Guianas (Teleostei: Siluriformes: Loricariidae)

Claude Weber, Raphaël Covain & Sonia Fisch-Muller
Twenty-one nominal species of Hypostomus are recorded in fresh and brackish waters of the Guianas from the Oyapock to the Essequibo Rivers. One of those, Hypostomus plecostomus, was the first described representative of the genus. However this name was often erroneously applied to numerous other species. The identity of H. plecostomus was here investigated based on a dual approach allying classical morphometric and allozyme analyses of several populations representing respectively 15 and five of the...

Diversity of the Ancistrini (Siluriformes: Loricariidae) from the Guianas: the Panaque group, a molecular appraisal with descriptions of new species

Sonia Fisch-Muller, Juan I. Montoya-Burgos, Pierre-Yves Le Bail & Raphaël Covain
DNA barcoding represents a reliable and powerful way to discriminate and identify species using a standardized region of the mt COI gene. However, a correct identification requires two factors: differentiation and assignment. When one component is lacking, the barcode approach usually fails. To circumvent such problem, we developed a dual approach using a nuclear marker as complementary identifier. A first step consisted in characterizing the first intron of the F-RTN4 gene. This intron was found...

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...

Diversity and distribution of anostomoid fishes (Teleostei: Characiformes) throughout the Guianas

Brian L. Sidlauskas & Richard P. Vari
Fifty-six species or approximately 20% of the Neotropical characiform superfamily Anostomoidea (families Anostomidae, Chilodontidae, Curimatidae and Prochilodontidae) occur in the freshwaters of French Guiana, Guyana, and Suriname although these regions span only approximately 6% of the native range of this morphologically and ecologically diverse superfamily. As a result of the high diversity of anostomoids in the Guianas, the taxonomic and/or geographic boundaries of many species are poorly understood, particularly within the family Anostomidae. This contribution...

New species of Cyphocharax (Ostariophysi: Characiformes: Curimatidae) from Suriname and French Guiana and a discussion of curimatid diversity on the Guiana Shield

Richard P. Vari, Brian L. Sidlauskas & Pierre-Yves Le Bail
Cyphocharax biocellatus, a species of curimatid characiform apparently endemic to the Marowijne River/Fleuve Maroni system in Suriname and French Guiana, and the Mana River basin in French Guiana is described as new. The new species is diagnosed from congeners based on meristic and morphometric features and details of pigmentation of the body and dorsal and caudal fins. The description of the new species brings the total number of Cyphocharax species in the drainages overlying the...

Fish-habitat relationships in French Guiana rivers: a review

Bernard de Mérona, Francisco Leonardo Tejerina-Garro & Régis Vigouroux
The role of habitat at different spatiotemporal scales in structuring fish communities is nowadays universally recognized. French Guiana, with a dense hydrographic network and high fish species richness, constitutes an adapted field to test some hypotheses about fish-habitat relationships. This paper aims at synthesizing the actual knowledge on the environmental variables determinant in structuring fish communities in French Guiana rivers. Historical factors linked to the alternation of glacial and inter-glacial episodes explain the peculiar distribution...

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