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ISSN 0704-3716 Canadian Translation of Fisheries and Aquatic Sciences No. 5018 1 Fii.:'H n & 0 c ea n s 1î Y Ë ! ,• Some data on the systematic position and biology oe a , Pacific member of the genus Reinhardtius Gill 5 i 27 i qp3 OCT _ M.F. Vernidub, and K.I. Panin Original title: Nekotoryye dannyye o sistematicheskom polozhenii i biologii tikhookeanskogo predstavitelya Reinhardtius Gill In: Uch. zap. LGU (Scientific Journal of Leningrad State University) 15: 250-272, 1937 Original language: Russian Available from: Canada Institute for Scientific and Technical Information National Research Council Ottawa, Ontario, Canada KlA 0S2 1983 35 typescript pages 4. ISSN 0704-3716 Canadian Translation of Fisheries and Aquatic Sciences No. 5018 Sonie data on the systematic position and biology of a Pacific member of the genus Reinhardtius Gill M.F. Vernidub, and K.I. Panin Original title : Nekotoryye dannyye o sistematicheskom polozhenii i biologii tikhookeanskogo predstavitelya Reinhardtius Gill In: Uch. Zap. LGU (Scientific Journal of Leningrad State University) 15: 250-272, 1937 Original language: Russian Available from: Canada Institute for Scientific and Technical Information National Research Council Ottawa, Ontario, Canada KlA 0S2 1983 35 typescript pages • Secretary Secrétariat of State d'État MULTILINGUAL SERVICES DIVISION — DIVISION DES SERVICES MULTILINGUES TRANSLATION BUREAU BUREAU DES TRADUCTIONS LIBRARY IDENTIFICATION — FICHE SIGNALÉTIQUE Translated from - Traduction de Into - En Russian En g li s h Author - Auteur M.F. Vernidub and K.I. Panin Title in English or French - Titre anglais ou français Some data on the systematic position and biology of a Pacific member of the genus Reinhardtius Gill. Title in foreign language (Transliterate foreign characters) Titre en langue étrangère (Transcrire en caractères romains) Nekotoryye dannyye o sistematicheskom polozhenii i biologii tikhookeanskogo predstavitelya Reinhardtius Gill. Reference in foreign language (Name of book or publication) in full, transliterate foreign characters. Référence en langue étrangère (Nom du livre ou publication), au complet, transcrire en caractères romains. Uchonyye zapiski LGU Reference in English or French - Référence en anglais ou français Scientific Journal of Leningrad State University Publisher - Editeur Page Numbers in original DATE OF PUBLICATION Numéros des pages dans not available DATE DE PUBLICATION l'original Year Issue No. 250-272 Volume Place of Publication Année Numéro Number of typed pages Lieu de publication Nombre de pages dactylographiées USSR 1937 15 33 Requesting Department Translation Bureau No. Ministère-Client D F 0 Notre dossier no 1253729 Branch or Division SIPB Translation (Initials) Direction ou Division Traducteur (Initiales) N. De Person requesting P. Power Demandé par re a UNEDITED TRANSLATION Your Number — — (3, Votre dossier no For informallon only TRADUCTION Date of Request NON REVISEE Date de la demande August 15, 1983 C.03 Information seulement Canada SEC 5 - 111 (Rev. 82/11) Secretary Secrétariat 11 of State d' État MULTILINGUAL SERVICES DIVISION — DIVISION DES SERVICES MULTILINGUES TRANSLATION BUREAU BUREAU DES TRADUCTIONS Client's No—N° du client Department — Ministère Division/Branch — Division/Direction City — Ville D F 0 SIPB Ottawa Bureau No.—K1 0 du bureau Language — Langue Translator (Initials) — Traducteur (Initiales) 1253729 Russian N. De. SEP 3 0 1983 Uchonyye zapiski LGU (Scientific Journal of Leningrad State University), 1937, No. 15, p.250-272 ( 5-<0 ) Some data on the systematic position and biology of a Pacific member of the germs Reinhardtius nil' by M.F. Vernidub and K.I. Panin The so—called "Pacific black halibut", which is similar to the Greenland halibut Reinhardtius hippoglossoides Walb., was detected in a comparatively large number during an expedition of the Pacific Institute of Fisheries (Vladivostok) in the Sea of Okhotsk and the Bering Sea in 1931-1932. The literature contains hardly any data on the black halibut that inhabits the waters of these two seas. There is only one E mention of the discovery of a Reinhardtius species in Sagami Bay t VISE n (Japan, Pacific coast) where only one 375 mm specimen was caught E o RE leme SLATION (stuffed specimen, No. 456, Tokyo Museum). In 1897, it was de- o u se scribed by Ischikawa and Matsuura as Hippoglossus granlandicus. n TRAN io o e After studying this specimen, Jordan and Snyder described TION NON rm DITED io u. it as a new species, Reinhardtius matsuurae, in 1901. DUC In UNE TRA According to these authors, the new species was established on the basis of the fact that it could be distinguished from *The numbers in the right—hand margin are the pages of the Russian text — translator SEC 5-25 (Rev. 82/11) Canacrâ -2-- R. hippoglossoides Walb. by a greater abundance of scales and by a number of other characters which were not indicated. Therefore, the purpose of our investigation is to clarify the systematic position of the Pacific black halibut, and on the basis of the data available to us, to characterize it from the biological and commercial point of view. Our research was based on our own collections and observations, as well as on the collections of other expeditions of the Pacific Institute of Fisheries. We analyzed 36 specimens fixed with Formalin and alcohol (13 from the Sea of Okhotsk and 26 from the Bering Sea). In order to compare these Pacific black halibut with the Greenland halibut, we used the collections (8 specimens) of the Zoological Institute of the USSR Academy of Sciences. The genus Reinhardtius belongs to the Hippoglossinae subfamily (Pleuronectidae family). In many of its characters, it is inter- mediate between the Atheresthes and Hippoglossus genera of this subfamily, which is clearly seen in table 1. The following is a brief description of the genus. Genus Reinhardtius Gill. Pleuronectes Fabricius, Fauna Graenlandico, p. 163, 1870; Walbaum, Artedt piscium, p. 115, 1792. --Hippoglossus Reinhardt, Kg1.-Dansk, Vidensk. Selsk., p. 116, 1838; Günther, Cat. Fish. Brit. Mus., p. 404, 1862. --Reinhardtius Gill., Cat. Fish Coast N.A., p. 50, 1861; Gill., Proc. Ac. Nat. Sci. Phila., p. 218, 1864; Jordan a. Evermann, Bull. U.S. Nat. Mus., No. 47, p. 2610, 1898; Jordan a. Starks, Proc. U.S. Nat. Mus., v. XXXI, p. 195, 1907; Normann, Brit. Mus. Nat. Hist., V-1, 1934; Jensen, Mém. l'Acad. Roy. Sci, V-VI, No. 4, 1935. Platysomatichtys Bleeker, Bompt. Rendus Ac. Sci. Amsterdam, p. 426, 1862; Goode a. Bean, (! 51) Bull. Essex. Inst., 1879; Collett Norske Nord. Havs. Exped., p. 142, 1880; Jordan a. Goss, Rev. Flounders and Soles, p. 237, 1889; Smitt, Hist. Sci. Fish., 418, 1893. -3- Table 1. Comparative characteristics of three related genera from the subfamily Hippoglossinae Atheresthes Jord. et Reinhardtius Gill. Hippoglossus Cuvier. Gilb. Greenland halibut True halibut Arrowtooth flounder Teeth large, arrow- Teeth in jaws large, not arrow-shaped, two rows shaped, two rows on on upper jaw, one row on lower jaw both jaws Upper eye in notch of Upper eye in notch of Upper eye completely upper profile of head upper profile of head on pigmented side or on pigmented side Gill rakers long, thin, Gill rakers massive, Gill rakers short, wide with a row of denticles short, thick, with at the base, pointed, along one edge accessory denticles on with denticles the end Scales cycloid, quite Scales cycloid, spherical Scales cycloid, spherical large, fall off easily on body, elongated and on body, elongated and small on caudal peduncle small on caudal peduncle, very small accessory scales present Lateral line without Lateral line gently Lateral line highly arch in front sloping, without arch arched in front in front Lower pharyngeal teeth Lower pharyngeal teeth Lower pharyngeal teeth small, in two rows very large, in a single in two rows TOW Vertebrae (11)12+(35) Vertebrae 18+45=63 Vertebrae 16+35=51 36, 37(38) Both eyes are found on the right side of the body. In com- parison with the flounders, its body is elongated and compressed from both sides. The greatest thickness of the body is equal to approximatley 1/3 of its greatest depth. The head is large, ap- proximately k of the length of the whole body. The mouth is large, the maxillary extends to the posterior margin of the eye, or beyond the eye. The teeth on the jaws are large and sharp; they are ar- ranged in two rows on the upper jaw, and there is a single row of very widely spaced teeth on the lower jaw. In addition, there are -4— L fang—like teett... 2-3 pairs of large interiorly.d-iredtjC1 7-7—T'on the upper jaw in front. The teeth on the pigmented side and on the blind side are almost equally developed. The vomer and palatina have no teeth. The gill rakers are short and stout, with a row of accessory den- ticles on the end. The scales are small and cycloid, spherical on the body, elongated on the caudal peduncle. The lateral line is gently sloping, with no arch in the anterior. The dorsal fin overlaps by 1/3 of the length of the upper eye along the orbital margin. There is no spine in front of or within the anal fin. The caudal fin is slightly notched. The blind side of the body is pigmented. (252) Some data on the internal structure of Reinhardtius The number of vertebrae is on the average greater than in other members of the subfamily Hippoglossinae, in which it varies from 46 to 51. Due to the fact that the eye in Reinhardtius is found in the notch of the upper profile of the head, the bones of the skull and jaws are almost symmetrical; slight asymmetry is observed only in the anterior part of the skull. All of these characteristics make it similar to Atheresthes stomias Jord.