551 Works

New record and revised list of Megalops atlanticus (Elopiformes: Megalopidae) from Atlantic European waters

Rafael Bañón, Carlos Farias, Alejandro De Carlos, Juan Carlos Arronte, José L. Varela, Alberto Arias, David Barros-García & Enrique González-Ortegón
In August 2018, one male specimen of the Atlantic tarpon Megalops atlanticus of 1855 mm of total length was caught by a bottom longline gear in the Gulf of Cádiz (NE Atlantic). The identification of the specimen was confirmed by morphometric and meristic parameters as well as by DNA barcoding. Additional data of the stomach content and the trophic level are also provided. This catch represents a new record from the Atlantic European waters, where...

Otolith shape analysis of three gobiid species of the Northwestern Black Sea and characterization of local populations of Neogobius melanostomus

Daniela Banaru, Fabien Morat & Mihaela Creţeanu
The present study describes the otolith shape and age of three species of Gobiidae: Neogobius melanostomus (Pallas, 1814), Ponticola eurycephalus (Kessler, 1974) and Mesogobius batrachocephalus (Pallas, 1814) from the Western part of the Black Sea. These phylogenetically close species showed otolith shape differences. The round goby, Neogobius melanostomus, showed differences in otolith shape between local populations, probably related to differences in diet and environmental variability influenced by the Danube River inputs in the North of...

First records of the pipefishes Minyichthys myersi and Micrognathus andersonii from the Society Islands

John E. Randall, C. Seabird McKeon, Arthur Anker & Philippe Bacchet
The small syngnathid fish Minyichthys myersi (Herald & Randall, 1972) was first reported from the Society Islands by name only. It is now documented by the collection of a second specimen from Moorea. Another small syngnathid, Micrognathus andersonii (Bleeker, 1858), is also reported for the Society Islands by a specimen collected from the reef flat of Tahiti.

Review of Schismatogobius (Gobiidae) from Papua New Guinea to Samoa, with description of seven new species

Philippe Keith, Clara Lord & Helen K. Larson
The species of Schismatogobius from Papua New Guinea to Samoa are reviewed and compared to the three known species described from the area. Eleven species are recognized including seven new species. These are described using genetic and morphomeristic approaches. The species differ by a high percentage of divergence in partial COI gene (636 bp) and by several characters including the number of pectoral fin rays, the pattern of the ventral surface of the head in...

Genetic differentiation in Scriptaphyosemion geryi (Lambert, 1958) suggests the existence of a species complex

Jean-François Agnèse, Christian Cauvet & Raymond Romand
Scriptaphyosemion geryi (Lambert, 1958) is a well-defined taxa easily distinguished from the other congeneric species by a red marbled pattern, unpaired fins with deep blue blotches, blue margin and red submargin. A zigzag mid longitudinal dark line on sides characterizes females. For long, due to a high phenotypic variability, this taxa was suspected to encompass several cryptic species. We sampled 20 populations representing the entire species range and characterized the genotypes (cytochrome b, mitochondrial DNA)...

The growth features of chub Squalius cephalus and comparison of five different condition indices

Sibel Yıgıt, Mehmet Borga Ergonul & Ahmet Altındag
In this study a total of 131 chub, Squalius cephalus (Linnaeus, 1758) (Cyprinidae), living in Kapulukaya dam lake (Ankara, Turkey) were investigated. The growth features; age composition, age-length, age-weight and length-weight relationship and von Bertalanffy growth equations were calculated for both sexes separately. In addition, five different condition indices that was proposed by different researchers were applied and compared.

Révision critique d’un catalogue des types de poissons du Muséum national d’Histoire naturelle – Familles des Triacanthidae, Balistidae et Monacanthidae

Monique Beaunier, Martine Desoutter & Patrice Pruvost
Critical revision of catalogue of types of fishes in Museum national d’Histoire naturelle. Family Triacanthidae, Balistidae and Monacanthidae. This catalogue is dedicated to three families of the order Tetraodontiforms: the Triacanthidae, the Balistidae and the Monacanthidae. These families are mainly present in tropical seas. The MNHN type specimens for these groups were published by Y. Le Danois in 1961. The latter work bears many errors and was not completely respectful of the International Code of...

Age estimation and reproductive status of an exceptionally large blue-eye trevalla (Hyperoglyphe antarctica, Centrolophidae) captured off the south coast of Western Australia

Corey B. Wakefield & Stephen J. Newman
In March 2005, an exceptionally large blue-eye trevalla, Hyperoglyphe antarctica (Carmichael, 1819), was captured by drop line off the south coast of Western Australia. The specimen measured 1066 mm total length, 968 mm fork length, was female and in spawning condition (hydrated oocytes were present). The sagitta was used to estimate an age of approximately 32 years. This specimen is one of the largest and oldest reported for this species and also contributes towards the...

First documented occurrence of Selene vomer (Carangidae) in Mar Chiquita coastal lagoon, Argentina

Natalia L. Ruocco, Santiago A. Barbini, Ezequiel Mabragaña, Daniel E. Figueroa & Juan M. Díaz de Astarloa

Habitat selection by non-breeders helps predict the breeders distribution in two penguin species [Extended abstract]

Jean-Baptiste Thiebot, Amélie Lescroël, David Pinaud, Philip N. Trathan & Charles-André Bost

First records of Purplemouthed conger Pseudophichthys splendens (Anguilliformes: Congridae) from the Galicia Bank (NW Spain). A northward range extension of their distribution in the eastern Atlantic

Rafael Bañón, Juan Carlos Arronte, Alberto Serrano & Francisco Sánchez
Two Purplemouthed conger Pseudophichthys splendens were caught for the first time in the Galicia Bank. These new records extend northward their known distribution range in the eastern Atlantic. The occurrence of P. splendens in the Galicia Bank is discussed and the probable causes of its presence related to oceanographic processes and larval stages are provided.

First record of Nanobagrus armatus (Siluriformes: Bagridae) in Sumatra, Indonesia

Doni Setiawan, Ajiman & Muhammad Iqbal
On March 2017, a specimen of Nanobagrus armatus was captured and photographed in the Keroh River, South Sumatra province. So far, N. armatus has only been observed from Indonesian Borneo, so this record constitutes the first record of this species for Sumatra.

Evidence of two species currently under the name of Eleotris fusca (Gobioidei: Eleotridae) in the Indian Ocean

Marion Isabelle Mennesson & Keith Philippe
The species of Schismatogobius from Indonesia are reviewed and compared to the known species described from the area. Eight species are recognized including four new species. These are described using genetic and morphomeristic approaches. The species differ 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 in males and/or females, the...

A new species of Belobranchus (Teleostei: Gobioidei: Eleotridae) from Indonesia

Philippe Keith, Renny K. Hadiaty & Clara Lord
A new species of Belobranchus, a freshwater Eleotridae, is described from streams of Indonesia. It differs from the other only species belonging to the genus by a combination of characters including the scales in transverse forward series (22-28 versus 27-35), in transverse back series (18-21 versus 20-23), in predorsal scales (16-23 versus 21-34), and the in vivo general colour pattern. Particularly the caudal fin is never spotted but generally translucent with some yellow or reddish...

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...

New records of the Levantine endemic cichlid Tristramella simonis from Syria

Kai Borkenhagen & Jörg Freyhof
The cichlid genus Tristramella has been known from the lakes Tiberias, Muzarib and Hula in the Jordan River drainage and from the lakes east of Damascus. New field surveys revealed that T. simonis is more widespread in the upper Jordan basin and is introduced and well established in the Orontes and the Nahr al Kabir (N) in Syria.

Étude comparative des crustacés isopodes et copépodes ectoparasites de poissons marins algériens et marocains

Zouhir Ramdane, Mourad Abdelkrim Bensouilah & Jean-Paul Trilles
Les crustacés ectoparasites de poissons marins des côtes nord africaines de la Méditerranée ont fait l’objet de plusieurs travaux ; ceux-ci ont en particulier concerné les côtes tunisiennes, algériennes et marocaines. nos travaux de recherche ont consisté à comparer la richesse spécifique correspondante de ces deux dernières régions. Plusieurs espèces rattachées à diverses familles y sont représentées. La spécificité parasitaire est variée et les indices parasitologiques révèlent des taux d’infestation globalement faibles. Plusieurs espèces sont...

Relationship between Anisakis infestation and ovarian abnormalities in Trachurus trachurus (Carangidae) from the eastern coast of Algeria

Keltoum Ichalal, Hafsa Djoudad-Kadji, Amirouche Chikhoune & Zouhir Ramdane
The objective of the study was to describe the ovarian abnormalities of horse mackerel, Trachurus trachurus (Linnaeus, 1758), and to investigate the relationships that may exist between these abnormalities and nematode parasite infestation. 953 specimens of T. trachurus were randomly sampled between February 2013 and March 2014. A biometric analysis was conducted for every fish specimen. After dissection, parasites were collected, identified and the infestation rate was calculated. A macroscopic and microscopic study of the...

Geographic distribution of gobies (Gobiidae) in the Adriatic Sea with thirteen new records for its southern part

Marcelo Kovačić, Radek Šanda, Marin Kirinčić & Davor Zanella
Prior to the present study, the gobiid biodiversity of the Adriatic Sea varied significantly between the northern (98% of the known Adriatic gobiid biodiversity) and central (89%) as compared to the southern Adriatic Sea (39%). Thirteen species are newly recorded for the southern Adriatic area and one for the central Adriatic. The relatively small collecting effort in this survey produced a large increase in the known gobiid biodiversity, which suggests that the low number of...

Tooth shape in teleosts and its link to tooth spacing and replacement

Ann Huysseune & P. Eckhard Witten
Teeth continue to be in the focus in many paleontological and neontological disciplines, and their morphological characters, histological structure and mode of attachment are the subject of ongoing studies. In this review, we elaborate on tooth shape. We first highlight the progress that was made over the last two decades in understanding the mechanisms that determine the shape of a tooth. We then describe the often dramatic changes that tooth shape undergoes in ontogeny. Finally,...

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...

New biological data on Fistularia commersonii in the central Mediterranean Sea

Luca Castriota, Manuela Falautano, Pietro Battaglia, Alberto Oddo & Franco Andaloro
Preliminary data on age, growth and diet of bluespotted cornetfish Fistularia commersonii Rüppell, 1838 (Fistulariidae) in the central Mediterranean Sea are provided. In the study area, this invasive Lessepsian fish showed piscivorous behaviour, focusing mainly on labrids, clupeids and sparids. Prey composition suggests that bluespotted cornetfish explores various habitats for hunting. Prey fishes were mainly juveniles and their size showed positive correlation with predator size. Estimated by vertebrae readings, ages of bluespotted cornetfish, having sizes...

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...

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...

A new species of Sicyopus (Teleostei: Gobiidae) from New Britain (Papua New Guinea)

Philippe Keith, Pita Amick, Pagi S. Toko & Clara Lord
A new species of Sicyopus, a sicydiine goby, is described from specimens collected in streams of New Britain (Papua New Guinea). It differs from other species of this amphidromous genus by a combination of characters including a second dorsal fin with one spine and ten segmented rays, fewer scales in lateral series and transverse back series, and smaller predorsal and caudal peduncle lengths.

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