Chimaeroid fishes of New Caledonia with description of a new species of Hydrolagus (Chondrichthyes, Holocephali)
Three species of chimaeroid fishes are reported from deep waters around New Caledonia: Chimaera phantasma, Rhinochimaera pacifica and Hydrolagus trolli n. sp., which is described from 23 specimens collected from New Caledonia and New Zealand at depths of 612 - 1707 m. The new species is distinguishe...
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Veröffentlicht in: | Cybium 2002-01, Vol.26 (3), p.225-233 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Three species of chimaeroid fishes are reported from deep waters around New Caledonia: Chimaera phantasma, Rhinochimaera pacifica and Hydrolagus trolli n. sp., which is described from 23 specimens collected from New Caledonia and New Zealand at depths of 612 - 1707 m. The new species is distinguished from all other members of the genus by its blue-gray coloration, distinctly pointed snout, first dorsal fin concave along its posterior edge with a pale margin, preopercular and oral lateral-line canals usually sharing a common branch, males with a robust frontal tenaculum with the distal bulb upturned at its distal edge, denticles extending onto the dorsal surface and bifid pelvic claspers with the distal 1/3 divided and pale colored, fleshy distal lobes.Original Abstract: Trois especes de chimeres sont signalees dans les eaux profondes de Nouvelle-Caledonie: Chimaera phantasma, Rhinochimaera pacifica et Hydrolagus trolli sp. n., qui est decrite a partir de 23 specimens collectes en Nouvelle-Caledonie et en Nouvelle-Zelande, entre 612 et 1707 m de profondeur. Cette nouvelle espece se distingue de ses congeneres par sa coloration gris-bleu, son museau nettement pointu, le bord posterieur de sa premiere nageoire dorsale concave et lisere de blanc, les canaux preoperculaires et oraux de la ligne laterale avec une branche commune, le tenaculum frontal des males robuste avec un bulbe distal retrousse et portant des denticules cutanes qui s'etendent sur sa face dorsale, les pterygopodes bifides, leur tiers distal etant divise en lobes charnus de couleur claire. |
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ISSN: | 0399-0974 |