428 Works

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...

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...

First report of cleaning activity of Lepadogaster candolii (Gobiesocidae) in the Mediterranean Sea

Boris Weitzmann & Lluís Mercader
Cleaning behaviour is reported in Lepadogaster candolii Risso, 1810 for the first time. The observation took place in August 2009 during a SCUBA-diving at the Medes Islands Marine Reserve (NW Mediterranean). The individual, belonging to a species usually considered as cryptobenthic, was cleaning the mouth of a large Mediterranean dusky grouper Epinephelus marginatus (Lowe, 1834), who was holding its mouth open and keeping a still position at a distance from the ground. Up to now,...

First record of Terapon theraps (Terapontidae) in the Aegean Sea (Greece)

George Minos, Anastasia Imsiridou & Panos S. Economidis
The Indo-Pacific largescaled terapon, Terapon theraps Cuvier, 1829 (Terapontidae), is reported on the basis of an alive specimen, in the inshore area of Thermaikos gulf (Macedonia, Greece). This is the second record for the whole Mediterranean and the first for the Aegean Sea. Identification, origin and spreading processes – ballast water being very probable for its transportation – are also discussed.

Agonistic behaviour among Haemulon spp. (Actinopterygii: Haemulidae) and other coral reef fishes in Northeastern Brazil

Pedro Henrique Cipresso Pereira & Beatrice Padovani Ferreira
Food resource competition and habitat segregation motivate agonistic interactions among coral reef fishes. The present study analyses the relationships of agonistic encounters according to trophic guilds and life phases of fishes of the genus Haemulon in Northeastern Brazil. The individuals of this genus display the highest aggressiveness towards invertebrate feeders (90.1{%} of total percentage) and carnivores (6.4{%}), the two trophic guilds with which food preferences overlap. Meanwhile, they were attacked more by territorial herbivores from...

Development of early life stages of the blenny Hypleurochilus fissicornis (Blenniidae)

Sergio M. Delpiani, Daniel O. Bruno, Juan M. Díaz de Astarloa & Fabián Acuña
The early developmental stages of Hypleurochilus fissicornis (Quoy {&} Gaimard, 1824) from egg to 120 hours after hatching are described for the first time, from three nests found in the rocky intertidal of Mar de Cobo, Argentina. Eggs are spherical, with an adhesive pad and purple pigment. Larvae have yellowish pigment on the head (snout, preocular, postocular) and pectoral fins. Melanophores cover the peritoneum and 28 occur in a row on the ventral edge of...

The status of Pseudolabrus psittaculus (Richardson) and use of the name Pseudolabrus rubicundus (Macleay) for this species

Barry C. Russell & Anthony C. Gill
In an annotated checklist of the family Labridae, Parenti and Randall (2000) noted that Pseudolabrus psittaculus (Richardson, 1840), described from Tasmania, is preoccupied by Labrus psittaculus Lacepède, 1801 [=Halichoeres bivittatus (Bloch 1791)], a Caribbean species, and proposed the next available name, Labrichthys rubicunda Macleay, 1881, be used for this species. Based on its purported type-locality, and in the absence of the type-specimen, Pseudolabrus rubicundus was rejected as a nomen dubium by Allen et al. (2006)...

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...

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...

Possible link between prey quality, condition and growth of juvenile hake (Merluccius merluccius) in the Gulf of Lions (NW Mediterranean)

Mireille Harmelin-Vivien, Kélig Mahé, Xavier Bodiguel & Capucine Mellon-Duval
The energy value of the main prey and the growth of juvenile hake in the Gulf of Lions were analysed to determine whether fish condition could be linked to difference in prey quality and resulted in growth difference. Large differences in energy content (15.6 to 23.6 kJ g-1 DW) among prey types were recorded with low values found in amphipods and natantid shrimps, intermediate values in euphausiids and mysids, and high values in fish. High...

Metazoan ectoparasites of two teleost fish, Boops boops (L.) and Mullus barbatus barbatus L. from Algerian coast: diversity, parasitological index and impact of parasitism

Zouhir Ramdane, Jean-Paul Trilles, Kélig Mahé & Rachid Amara
A total of 664 Boops Boops (Linnaeus, 1758) and 823 Mullus barbatus barbatus Linnaeus, 1758 from the east coast of Algeria were examined to study their parasitofauna. We collected eleven parasitic species (two monogeneans, three copepods, five isopods and one Branchiura) from B. boops, and four parasitic species (two copepods and two isopods) from M. barbatus barbatus. Five species were reported for the first time in Algeria. The site of attachment on the host and...

Guide for the identification of archaeological sea sturgeon (Acipenser sturio and A. oxyrinchus) remains

Els Thieren, Wim Wouters & Wim Van Neer
Remains of sturgeons (Acipenser sturio and A. oxyrinchus) are regularly found on western European archaeological sites. The identification of these isolated bones should ideally be carried out with the aid of a comparative skeletal collection, consisting of modern specimens of different sizes. Because such reference material of sea sturgeons (A. sturio and A. oxyrinchus) is relatively rare and dispersed over many different museums and institutes, a practical guide is presented here as an aid to...

Influence des facteurs environnementaux sur la structure des peuplements ichtyologiques de l’île de La Réunion (Sud-Ouest de l’océan Indien)

Mathieu Pinault, Pascale Chabanet, Nicolas Loiseau, Patrick Durville, René Galzin & Jean-Pascal Quod
Ce travail, réalisé sur des habitats récifaux et non récifaux de l’île de La Réunion, constitue la première étude sur la structure de l’ichtyofaune côtière à l’échelle de l’île. Il comprend la caractérisation des peuplements,l’identification des patrons spatiaux de distribution des taxons et l’analyse des interactions entre lesvariables ichtyologiques et environnementales. L’échantillonnage a été réalisé par recensement visuel sur vingt secteurs répartis autour de l’île. Soixante-quatre familles et 406 espèces ont été recensées. À chaque...

Records of the eels Kaupichthys atronasus (Chlopsidae), Phyllophichthus xenodontus (Ophichthidae), and Gorgasia preclara (Congridae) from the Red Sea

David G. Smith, Sergey V. Bogorodsky & Ahmad O. Mal
Kaupichthys atronasus Schultz, 1953 is recorded from two specimens from Egypt and Saudi Arabia. Phyllophichthus xenodontus Gosline, 1951 is recorded from two specimens collected from Egypt. Geographic variation in this species is discussed. Gorgasia preclara Böhlke & Randall, 1981 is recorded from a photograph taken of a live individual at Dahab, Egypt.

Notes on the feeding habits of Gaidropsarus guttatus (Collett, 1890) from Faial Island, Azores, NE Atlantic, PT

Madaíl Ávila, Donzília Nunes, Leonardo F. Machado & João P. Barreiros
Gaidropsarus guttatus is a nocturnal predator that dwells in rocky bottoms of Macaronesian coastal areas. There are no studies as yet on the feeding ecology of this species. This paper describes the feeding habits of this quite unknown species, based on a sample from Faial Island, Azores, Portugal. This sample is composed of 82 specimens collected between August 1997 and April 1999, both in intertidal pools and sub-tidal shallow waters (max. depth 10 m). 95%...

What can goby otolith morphology tell us?

Christoph Gierl, Dorothea Liebl, Radek Šanda, Jasna Vukić, Hamid Reza Esmaeili & Bettina Reichenbacher
The taxonomic information inscribed in otoliths has been widely ignored in ichthyological research, especially in descriptions of new fish species. One reason for this is that otolith descriptions are per se qualitative, and only a few studies have presented quantitative data that can support assignments of otoliths to individual species or permit differentiation between higher taxonomic levels. On the other hand, in palaeontology, otoliths have been employed for the identification and taxonomic placement of fossil...

Re-description of the rare taillight shark Euprotomicroides zantedeschia (Squaliformes, Dalatiidae), based on third and fourth record from off Chile

Matthias Stehmann, Martien van Oijen & Pepijn Kamminga
The third and fourth records of the rare oceanic dalatiid shark Euprotomicroides zantedeschia Hulley & Penrith, 1966 from off Chile, near Juan Fernandez Islands, are described. A nearly mature male of 455 mm total length (TL) was caught by a Russian trawler in 1985, and a presumably mature female of 515 mm TL by a Dutch stern trawler in 2008. Both new records of this rare species, hitherto known only from the juvenile female holotype...

First record of Histiobranchus australis (Regan, 1913) (Synaphobranchidae), from the Azores (northeastern Atlantic Ocean)

Armando J. Almeida & Manuel Biscoito
The occurrence of Histiobranchus australis (Regan, 1913) in the Azores, based on two specimens collected from between 2085-2096 m depth during the BIAÇORES 1971 cruise, is the first record of this species in the northeastern Atlantic Ocean and the northernmost record in the boreal hemisphere.

Note on the occurrence of Callionymidae at the coast of Estoril (Portugal)

Pedro Lopes Da Cunha & Maria Margarida Antunes
A beam trawl survey of the ichthyofauna carried out between 2007 and 2010 on the coast of Estoril (west of Lisbon), revealed the presence of four species of Callionymus: Callionymus lyra Linnaeus, 1758, was by far the most abundant species at any depth, albeit presenting a clear preference for the shallower and more sheltered parts along the coast. C. reticulatus Valenciennes, 1837 was mainly caught in shallow waters near the shore, while C. maculatus Rafinesque-Schmaltz,...

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