1,514 research outputs found

    A Revision of the Surgeon Fish Genera Zebrasoma and Paracanthurus

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    Volume: 9Start Page: 396End Page: 41

    Review of the Cardinalfishes (Perciformes: Apogonidae) of the Red Sea

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    Twelve genera and 54 species of cardinalfishes are reported from the Red Sea. The Red Sea cardinalfishes include: Apogon annularis R├╝ppell, A. apogonides (Bleeker), Apogon bryx Fraser, A. campbelli Smith, A. coccineus R├╝ppell, A. cookii Macleay, A. cyanosoma Bleeker, A. erythrosoma n. sp., A. exostigma (Jordan & Starks), A. fleurieu (Lacep├Ęde), A. fraenatus Valenciennes, A. guamensis Valenciennes, A. gularis Fraser & Lachner, A. heptastygma Cuvier, A. isus Randall & B├Âhlke, A. kallopterus Bleeker, A. leptacanthus Bleeker, A. multitaeniatus Cuvier, A. nigrofasciatus Lachner, A. pharaonis Bellotti, A. pselion Randall, Fraser & Lachner, A. pseudotaeniatus Gon, A. quadrifasciatus Cuvier, A. queketti Gilchrist, A. semiornatus Peters, A. smithi (Kotthaus), A. spilurus Regan, A. taeniatus Cuvier, A. talboti Smith, A. timorensis Bleeker, A. zebrinus Fraser, Randall & Lachner, Apogonichthys perdix Bleeker, Archamia bilineata Gon & Randall, Archamia fucata (Cantor), Archamia lineolata (Cuvier), Cercamia eremia (Allen), Cheilodipterus lachneri Klausewitz, C. lineatus (Forssk├ąl), C. macrodon LacepPde, C. novemstriatus (R├╝ppell), C. pygmaios Gon, C. quinquelineatus Cuvier, Foa fo Jordan & Seale, Fowleria aurita (Valenciennes), F. marmorata (Alleyne & Macleay), F. vaiulae (Jordan & Seale), F. variegata (Valenciennes), Neamia octospina Smith & Radcliffe, Pseudamia gelatinosa Smith, Rhabdamia cypselura Weber, R. nigrimentum (Smith), R. spilota Allen & Kuiter, Siphamia permutata Klausewitz, and Sphaeramia orbicularis (Cuvier). Twelve (22%) of the apogonid species are endemic. Seven species, i.e. Apogon apogonides, A. campbelli, A. erythrosoma, A. talboti, Foa fo, Rhabdamia spilota and Sphaeramia orbicularis, are new to the Red Sea. Apogon coccineus of previous authors is a complex of three species, including campbelli Smith and erythrosoma n. sp. The dark-striped species of Apogon of the Red Sea previously identified as angustatus, endekataenia, fasciatus, or novemfasciatus are cookii and nigrofasciatus. Red Sea apogonids identified by previous authors as Apogon bandanensis, monochrous, nubilus and savayensis, are guamensis and zebrinus. Apogon micromaculatus Kotthaus is A. spilurus Regan. The specimen of Apogon kiensis reported by Smith (1961) from the Red Sea is A. bryx, recently described from the Philippines. In the genus Fowleria, polystigma (Bleeker) and punctulata (R├╝ppell) are junior synonyms of variegata (Valenciennes). F. abocellata Goren & Karplus is a junior synonym of vaiulae (Jordan & Seale), and isostigma (Jordan & Seale) does not occur in the Red Sea. Apogon cupreus and A. latus, both of Cuvier, are unidentifiable. A. hyalosoma and A. taeniophorus are doubtful records

    Initial overview of disconnection events in Halley's Comet 1986

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    We present an initial overview of the disconnection events (DE's) in Comet Halley in 1986. Although disconnection events are arguably the most spectacular of all dynamic comet phenomena, the mechanisms by which they occur are not fully understood. It is generally believed that the solar wind plays a major role in determining when disconnection events occur, but the details of the solar wind/cometary interactions responsible for initiating the tail disconnection are still under debate. The three most widely accepted models are: (1) high speed streams in the solar wind cause the tail to disconnect due to pressure effects; (2) decreased production of cometary ions in a high speed stream allows magnetic field to slip away from the comet; and (3) the tail disconnects after frontside reconnection of the interplanetary magnetic field (IMF) as the comet crosses a magnetic field sector boundary. We find that the front-side magnetic reconnection model is the best explanation for the DE's we have considered

    Ichthyological Bulletin of the JLB Smith Institute of Ichthyology; No. 58

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    The following 84 gobioid fishes are reported from the Maldive Islands (those preceded by asterisk represent new records). GOBIIDAE: Amblyeleotris aurora (Polunin & Lubbock), *A. diagonalis Polunin and Lubbock, *A. periophthalma (Bleeker), *A. steinitzi (Klausewitz), A. wheeleri (Polunin & Lubbock), * Amblygobius hectori (Smith), A. semicinctus (Bennett), * Asterropteryx semipunctatus Ruppell, *A. spinosus (Goren), *Bathygobius calitus (Bennett), B. cocosensis (Bleeker), *B. cyclopterus (Valenciennes), * Cabillus tongarevae (Fowler), * Callogobius centrolepis Weber, *C. sclateri (Steindachner), *C. sp., Cryptocentrus fasciatus (Playfair & Gunther), *Ctenogobiops crocineus Smith, C. feroculus Lubbock & Polunin, * Eviota albolineata Jewett & Lachner, *E. guttata Lachner & Karnella, *E. nebulosa Smith, *E. nigripinna Lachner & Karnella, *E. prasina (Kluzinger), *E. sebreei Jordan & Seale, *E. zebrina Lachner & Karnella, *E. sp., * Flabelligobius latruncularius (Klausewitz), * Fusigobius duospilus Hoese & Reader, *F. neophytus (Gunther), *F. sp. 1 (sp. A of Winterpottom & Emery, 1986), *F. sp. 2 (sp. B of Winterbottom & Emery, 1986), *Gnatholepis anjerensis (Bleeker), *G. scapulostigma Herre, *Gobiodon citrinus (Ruppell), *G. sp. (Chagos specimens identified as G. rivulatus by Winterbottom & Emery, 1986), *Hetereleotris zanzibarensis (Smith), *Istigobius decoratus (Herre), *Macrodontogobius wilburi Herre, Oplopomus caninoides (Bleeker) (reported from Maldives by Regan, 1908), O. Oplopomus (Valenciennes) (reported from Maldives by Regan, 1908, as Hoplopomus acanthistius), *Opua maculipinnis, n. sp. (Opua E.K. Jordan is regarded as a senior synonym of Oplopomops Smith; the new species is characterized as follows: no dorsal spines filamentous, the third longest; 10 soft rays in second dorsal and anal fins; 27 scales in longitudinal series on body, 9 prodorsal scales; body depth 4.9 in SL, a midlateral row of five dusky blotches on body each containing a pair of dark brown spots, a large dusky spot under eye, and a large black spot posteriorly in first dorsal fin), *Palutrus reticularis Smith,* Papillogobius reichei (Bleeker), *Paragobiodon lacuniculus (Kendall and Goldsborough), *P. modestus (Regan), *Pleurosicya michelli Fourmanoir, *Priolepis cinctus (Regan), *P. nocturnus (Smith), *P. semidoliatus (Valenciennes), P. sp., Stonogobiops dracula Lubbock & Polunin, * Sueviota lachneri Winterbottom & Hoese, *Trimma emeryi Winterbottom, *T. flammeum (Smith), *T. naudei Smith, *T. striata (Herre), *T. taylori Lobel, *T. tevegae Cohen & Davis, *T sp. 1, *T. sp. 2, *T. sp. 3, *T. sp. 4 (these four species of trimma to be described by R. Winterbottom), *Trimmatom nanus Winterbottom & Emery, Valenciennea helsdingenii (Bleeker), V. puellaris (Tomiyama), V. sexguttata (Valenciennes), V. strigata (Broussonet), V. sp. (to be named by Hoese and Larson, in press), Vanderhorstia ambanoro (Fourmanoir),* V. ornatissima Smith, V. prealta Lachner & McKinney. ELEOTRIDIDAE: Eleotris melanosoma Bleeker. MICRODESMIDAE: * Gunnellichthys curiosus Dawson, *G. monostigma Smith, G. viridescens Dawson, *Ne- mateleotris decora Randall & Allen, N. magnifica Fowler, Ptereleotris evides (Jordan & Hubbs), P. heteroptera Bleeker, *P. microlepis (Bleeker), *P. zebra (Fowler), *P. sp. (probably either P. hanae or P. arabica; specimen needed). XENISTHMIDAE: Xenisthmus polyzonatus (Klunzinger).Digitised by Rhodes University Library on behalf of SAIA

    Palauan Fish Names

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    Palauans have names for most fishes of importance to them. Three hundred thirty-six vernacular fish names and their 312 scientific equivalents are listed. Palauan names show little similarity to Yapese and Guamanian names. Different native names exist for different life stages and sexes of many fishes, and some variation in names occurs between northern and southern Palau. Earlier publications of Palauan fish names are discussed

    Two New Western Atlantic Species of the Gobiid Fish Genus Gobionellus, with Remarks on Characteristics of the Genus

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    Two new western Atlantic species of Gobionellus (family Gobiidae) are described and figured. G. comma, which is presently known only from the southern Caribbean Sea, off Venezuela, is characterized primarily by a dark, comma-shaped bar in the suborbital area. G. atripinnis, which has been found only in the western Gulf of Mexico, from southern Texas to Veracruz, Mexico, is most readily distinguished by an elongate black blotch in the male\u27s spinous dorsal fin and in having 16 pectoral fin rays. G. comma is closely related to the eastern Pacific G. manglicola. The relationships of G. atripinnis are more obscure. Important diagnostic characters of Gobionellus are presented, together with preliminary conclusions concerning the interrelationships of the genera Evorthodus and Oxyurichthys, which closely resemble Gobionellus in several important ways. Although groundwork is laid for possible synonymization of these genera (including discussion of nomenclatural problems), such action is deferred until more comprehensive studies are completed. A total of 14 coarse-scaled species of Gobionellus are recognized. These are included in a taxonomic key, which also includes a geographic range statement for each species. Also included in the key are the two species of Evorthodus, which are frequently confused with the coarse-scaled Gobionellus. This key does not include the recently-described G. munizi Vergara 1978, specimens of which we have not had the opportunity to examine. Comments are included, however, regarding this species\u27 validity and probable relationships, based on text of the original description and accompanying figures

    Ichthyological Bulletin of the J.L.B. Smith Institute of Ichthyology; No. 45

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    Fifteen species of the labrid fish genus Halichoeres occur in the western Indian Ocean (west of the southern tip of India): hortulanus (centiquadrus of many authors), scapularis, (ziczac is a synonym), marginatus (lamarii, ianthinus and virescens are synonyms), dussumieri (nigrescens of many authors; javanicus, dubius and dianthus are synonyms), pardaleocephalus (first western Indian Ocean record), hoevenii (vrolikii is a synonym), nebulosus (previously confused with margaritaceus which does not occur in the Indian Ocean), zeylonicus (bimaculatus of most authors is a synonym), lapillus, and six new species (stigmaticus, pelicieri, cosmetus, iridis, trispilus, and leucoxanthus). H. stigmaticus from the Persian Gulf is distinctive in having 28 lateral-line scales, 6 or 7 suborbital pores, and a U-shaped black mark on side above pectoral fin tips in males; H. pelicieri from Mauritius is a close relative of H. zeylonicus, differing chiefly in the colour of males (pelicieri with a broad blackish zone in dorsal fin and no large black spot on upper side); H. cosmetus, wide-ranging in the western Indian Ocean and a close relative of H. ornatissimus of the Pacific and Cocos-Keeling Islands, is alternately striped with bluish gray to green and salmon pink or yellow; H. iridis, also a species of the western Indian Ocean, has a dark brown body except for a red band along the back and an orange-yellow head with green bands; H. trispilus, known only from Mauritius and the Maldives, is pale pink with a diagonal row of three dark brown spots on upper caudal base and usually three black dots on back; H. leucoxanthus, known only from the Maldives, southwest Thailand and Java, is yellow dorsally and abruptly white on ventral half of body with a dark spot behind the eye, a black spot on upper caudal base, and three others in the dorsal fin.Rhodes University Libraries (Digitisation

    Ichthyological Bulletin of the J.L.B. Smith Institute of Ichthyology; No. 49

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    Two genera of Squirrelfishes of the subfamily Holocentrinae are found in the Indo-Pacific region: Neoniphon (Flammeo of recent authors) and Sargocentron (Adioryx of most recent authors). A total of 19 species of these two genera occur in the Indian Ocean west of the southern tip of India: Neoniphon argenteus, N. aurolineatus (Flammeo scythrops Jordan & Evermann and Holocentrus anjouanae Fourmanoir are junior synonyms), N. opercularis, N. aurolineatus, Sargocentron caudimaculatum, S. diadema, S. ittodai (first records for the Red Sea and western Indian Ocean), S. macrosquamis (recently described from the Red Sea and Amirante Group, Seychelles, the range here extended to Kenya, Mozambique, Mauritius, and the Chagos Archipelago), S. melanospilos (usually misidentified as cornutum which is known only from the Indo-Malayan region), S. microstoma (known in the region only from Maldive Islands and Astove Island), S. praslin (usually not distinguished by authors from S. rubrum; Holocentrum marginatum Cuvier is a synonym), S. punctatissimum (has priority over lacteoguttatum due to selection by first revisor, Bleeker, 1873), S. rubrum, S. seychellense (an insular western Indian Ocean species), S. spiniferum (Holocentrum melanotopte- rus Bleeker is a junior synonym), S. tiere (Holocentrum elongatum Steindachner is a junior synonym), S. tiereoides (a new western Indian Ocean record), S. violaceum, and a new species, S. inaequalis (closely allied to macrosquamis Go- lani, 1984, differing in variable Spination of preopercle, modally one fewer pectoral ray, fewer average number of lateral-line scales and a more elongate body). S. inaequalis is described from a total of 7 specimens from the Chagos Archipelago, Seychelles and Comoro Islands. S. melanospilos is recorded for the first time from the Red Sea where it appears to be subspecifically distinct from populations elsewhere in the Indo-Pacific region (no subspecific name proposed). Holocentrum macropus Gunther, allegedly collected at Mauritius, is a misidentification of the Atlantic Holocentrus ascensionis (Osbeck). A lectotype is selected for S. microstoma. Neotypes are designated for S. praslin and S. rubrum. Colour photographs of fresh specimens of all of the species except S. macrosquamis are presented.Rhodes University Libraries (Digitisation
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