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New Dextral Flounder Samariscus Hexaradiatus Sp. Nov. (Samaridae, Pleuronectiformes) from the Solomon Islands, South-West Paci

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New dextral flounderSamariscus hexaradiatus sp. nov. (Samaridae, Pleuronectiformes) from the Solomon Islands, South-West Pacific Ocean by Juan M. DIAZ DE ASTARLOA* (1), Romain CAUSSE (2) & Patrice PRUVOST (2) Abstract. – A new right eyed flounder,Samariscus hexaradiatus, is described on the basis of two specimens collected from the Solomon Islands, southwestern Pacific Ocean, at depths of 135-325 m. The new species is dis- tinguished from other species of the genus by the following characters: 6 pectoral-fin rays; 82 dorsal-fin rays and 60-62 anal-fin rays; 9 abdominal vertebrae and 32 caudal vertebrae; presence of ctenoid scales on the interorbital space and high number (74-75) of lateral-line scales. Ocular side of body light brown with four and three distin- guishable horseshoe-shaped spots along margins of both dorsal and ventral profiles, respectively. Two indistinct dusky blotches on the lateral line, one situated before the distal end part of the pectoral fin when flattened pos- teriorly, the other placed near the last one-third of the body length. Two distinct black spots placed on the upper and lower margins of the caudal peduncle at the posterior end of the dorsal and anal fins, respectively. Pectoral fin with dark pigmentation. Dorsal and anal fins dusky brown near the proximal and distal ends of the fin-rays, © SFI respectively, and with distinct series of small dusky spots on the medial parts the fin-rays. Received: 16 Oct. 2012 Accepted: 16 Sep. 2013 Editor: G. Duhamel Résumé. – Nouvelle espèce de poisson plat dextre, Samariscus hexaradiatus sp. nov. (Samaridae, Pleuronecti- formes), des îles Salomon, au sud-ouest de l’océan Pacifique. Une nouvelle espèce de poisson plat dextre, Samariscus hexaradiatus, est décrite sur la base de deux spé- Key words cimens collectés aux îles Salomon, au sud-ouest de l’océan Pacifique, à des profondeurs allant de 135 à 325 m. Elle se distingue des autres espèces du même genre par les caractères suivants : 6 rayons à la nageoire pectorale; Pleuronectiformes 82 rayons à la nageoire dorsale, 60-62 rayons à la nageoire anale; 9 et 32 vertèbres abdominales et caudales, Samaridae respectivement; présence d’écailles cténoïdes dans l’espace interorbitaire et 74-75 écailles sur la ligne latérale. Samariscus La face oculée du corps est brun clair avec quatre et trois taches distinctes en forme de fer à cheval le long des hexaradiatus sp. nov. nageoires dorsale et ventrale, respectivement. Deux taches sombres indistinctes sont situées le long de la ligne Solomon Islands latérale, l’une située en avant de l’extrémité de la nageoire pectorale lorsque celle-ci est rabattue postérieure- New species ment sur le corps, l’autre placée vers l’arrière, à mi-longueur du corps. Deux autres taches noires distinctes sont localisées sur les extrémités dorsales et ventrales du pédoncule caudal, juste après les nageoires dorsale et anale, respectivement. Les nageoires pectorales ont une pigmentation très foncée. Les rayons des nageoires dorsale et anale sont brun sombre sur les parties distales et proximales, et montrent des séries distinctes de petites taches sombres sur les parties médianes des rayons. The dextral flatfish genus Samariscus Gilbert, 1905 S. leopardus Voronina, 2009, S. longimanus Norman, 1927, (Pleuronectiformes; Samaridae sensu Cooper and Chapleau, S. luzonesis Fowler, 1934, S. macrognathus Fowler, 1934, 1998) is characterized by the combination of the following S. maculatus (Günther, 1880), S. multiradiatus Kawai et al., characters: four or five ocular-side pectoral rays, blind-side 2008, S. neocaledonia Kawai et al., 2011, S. nielseni Quéro pectoral fin absent, branched middle caudal-fin rays, lateral et al., 1989, S. sunieri Weber & de Beaufort, 1929, S. triocel- line on blind side absent (Norman, 1931, 1934; Quéro et latus Woods, 1966 and S. xenicus Ochiai & Amaoka, 1962). al., 1989; Alfonso, 2001; Amaoka et al., 1997; Kawai et al., In 2001, two specimens of an undescribed species of the 2008, 2011). Nineteen nominal species distributed in tropi- genus Samariscus were collected during the cruise “Salo- cal and subtropical regions of the Indo-Pacific (Kawaiet al., mon 1” from 23 September to 7 October 2001 in the Salo- 2008) are currently included in the genus (S. asanoi Ochiai mon archipelago (Principal Investigator Bertrand Richer de & Amaoka, 1962, S. corallinus Gilbert, 1905, S. desoutter- Forges). The cruise took place on board R/V Alis deployed ae Quéro et al., 1989, S. filipectoralis Shen, 1982, S. huys- from Nouméa by the Institut de Recherche pour le Dévelop- mani Weber, 1913, S. inornatus (Lloyd, 1909), S. japonicus pement (IRD). In this study, we describe this new species as Kamohara, 1936, S. latus Matsubara & Takamuki, 1951, Samariscus hexaradiatus. (1) Laboratorio de Biotaxonomía Morfológica y Molecular de Peces (BIMOPE), Instituto de Investigaciones Marinas y Costeras (IIMyC)-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Funes 3350, B7602AYL, Mar del Plata, Argentina. (2) UMR BOREA 7208, Département milieux et peuplements aquatiques, Muséum national d’Histoire naturelle. CP26, 43 rue Cuvier, 75005 Paris, France. [[email protected]] [[email protected]] * Corresponding author [[email protected]] Cybium 2013, 37(4): 241-246. Samariscus hexaradiatus sp. nov. from Salomon Islands DIAZ D E ASTARLOA ET AL . Figure 1. - Samariscus hexaradiatus n. sp. Ocular and blind sides. A, B: Holotype, MNHN 2002-3655, 100.3 mm SL. C, D: Paratype, MNHN 2002-3761, 80.9 mm SL. Table I. - Comparison of morphometric and meristic characters for ten species of Samariscus from the Indo-Pacific and Pacific Ocean. Ratios expressed as proportion of standard length (SL) or head length (HL). BD, body depth; PecL, pectoral fin length; PelLO, pelvic fin length ocular side; PectLB, pectoral fin length blind side; CPD, caudal peduncle depth; SNL, snout length; UED, upper eye diameter; LED, lower eye diameter; IW, interorbital width; UJO, length of upper jaw ocular side; UJB, length of upper jaw blind side; LJO, length of lower jaw ocular side; LJB, length of lower jaw blind side; DO, dorsal-fin rays; AN, anal-fin rays; PE, pectoral-fin rays; LL, lateral line scales; GRO, gill-rakers on ocular side; GRB, gill-rakers on blind side; VEA, abdominal vertebrae; VEC, caudal vertebrae. S. multiradiatus S. S. huysmani S. latus S. macrognathus S. hexaradiatus filipectoralis n = 15 n = 46 n = 2 Paratypes Other specimens Holotype n = 5 n = 5 Holotype Paratype Paratype Range x Range x Range x Range x Range x Measurements SL (mm) 100.3 80.9 76.5 55.6-114.5 50.0-98.9 60.3-85.8 59.5 41.9-61.5 37.7-48.8 HL (mm) 21.6 17.7 17.0 13.3-24.3 12.9-24.9 14.3-19.7 14.0 11.3-14.0 9.4-11.2 In SL BD 3.2 2.9 2.2 (2.6-3.2) 2.9 (2.5-3.2) 2.8 (2.4-2.6) 2.5 2.8 (2.6-3.2) 2.9 (2.6-2.9) 2.7 HL 4.6 4.6 4.5 (3.6-4.8) 4.3 (3.6-4.6) 4.2 (4.2-4.4) 4.3 4.2 (4.0-4.6) 4.3 (4.0-4.5) 4.2 PecL 3.7 3.6 2.6 (3.0-4.9) 4.1 (1.6-3.9) 2.5 (2.3-3.2) 2.8 6.3 (3.2-5.7) 4.6 (3.4-4.6) 3.9 PelLO 5.1 6.3 8.4 (5.6-10.8) 8.9 (6.5-15.4) 9.4 (7.9-8.7) 8.3 6.9 (6.7-11.2) 9.5 (9.8-12.2) 10.8 PelLB 10.4 11.1 15.3 (11.0-18.7) 14.1 (10.9-21.5) 14.1 (12.1-13.0) 12.5 10.6 (9.5-27.6) 18.1 (11.3-18.8) 15.5 CPD 7.5 8.7 6.3 (7.4-8.8) 7.9 (6.6-8.9) 7.8 (6.7-7.6) 7.2 9.0 (8.6-9.8) 9.2 (8.8-9.4) 9.1 In HL SNL 5.4 5.2 5.9 (3.9-5.1) 4.5 (4.0-5.4) 4.7 (3.9-4.0) 3.9 4.4 (4.2-5.2) 4.6 (4.2-5.5) 4.9 UED 3.0 3.1 2.9 (2.7-3.3) 3.0 (2.6-3.6) 3.0 (3.4-3.4) 3.4 2.8 (2.4-3.0) 2.7 (2.4-3.0) 2.7 LED 2.9 3.0 3.4 (2.8-3.5) 3.1 (2.8-4.0) 3.2 (3.3-3.6) 3.4 2.6 (2.5-2.9) 2.6 (2.6-3.0) 2.8 IW 30.9 29.5 21.3 (17.3-42) 24.3 (14.6-46.4) 23.5 (17.9-17.9) 17.9 28.0 (26.4-38.3) 34.4 (20.2-28.0) 24.0 UJO 3.3 3.9 2.9 (2.6-3.4) 2.9 (2.8-3.9) 3.1 (2.1-2.2) 2.1 3.7 (3.4-3.8) 3.6 (3.2-3.5) 3.3 UJB 3.6 4.0 3.4 (2.9-3.8) 3.3 (3.0-4.0) 3.4 (2.3-2.5) 2.4 3.7 (3.8-4.1) 3.9 (3.6-4.5) 3.8 LJO 2.1 2.1 2.0 (1.8-2.2) 2.0 (1.9-2.2) 2.0 (1.6-1.6) 1.6 2.2 (2.1) 2.1 (2.1-2.2) 2.1 LJB 2.2 2.4 2.2 (2.0-2.5) 2.2 (2.1-2.4) 2.2 (1.77) 1.77 2.1 (2.2-2.3) 2.2 (2.1-2.3) 2.2 Counts DO 82 82 71 (75-80) 77.4 (66-74) 70.4 (71-73) 72.0 85 (86-88) 87.2 (85-89) 87.4 AN 60 62 53 (59-60) 59.5 (49-57) 54.4 (56-58) 57.0 70 (69-72) 70.4 (69-71) 69.8 PE 6 6 5 5 5 4 5 5 5 LL 74 75 66 (70-88) 75.7 (54-68) 61.9 78 78.0 66 (64-67) 66.0 (63-69) 65.7 GRO 0+5 0+6 0+8 (0+7-9) 7.6 (0+5-8) 6.9 (0+5-6) 5.5 0 GRB 0+3 0+5 0-7 (0+7-11) 8.8 (0+6-9) 7.2 (0+5-6) 5.5 0 VEA 9 9 9 10 10 9 9 9 9 VEC 32 32 29 29-31 29-30 29 34 (34-35) 34.4 (34-35) 34.2 242 Cybium 2013, 37(4) DIAZ D E ASTARLOA ET AL .
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    Available online at: www.mbai.org.in doi: 10.6024/jmbai.2016.58.1.1895-05 Check list of fishes of the Gulf of Mannar ecosystem, Tamil Nadu, India K. K. Joshi*, Miriam Paul Sreeram, P. U. Zacharia, E. M. Abdussamad, Molly Varghese, O. M. M. J. Mohammed Habeeb1, K. Jayabalan1, K. P. Kanthan1, K. Kannan1, K. M. Sreekumar, Gimy George and M. S. Varsha ICAR-Central Marine Fisheries Research Institute, P. B. No.1603, Kochi - 682 018, Kerala, India. 1Tuticorin Research Centre of Central Marine Fisheries Research Institute, Tuticorin - 628 001, Tamil Nadu, India. *Correspondence e-mail: [email protected] Received: 10 Jan 2016, Accepted: 25 Jun 2016, Published: 30 Jun 2016 Original Article Abstract Introduction Gulf of Mannar Ecosystem (GOME) covers an area spread over Rameswaram and Kanyakumari for about 19000 km2 and lies between India is blessed with a vast region of coral reefs and 78°11’E and 79°15’ E longitude and 8°49’N and 9°15’N latitude. The mangroves and these regions support very rich fauna of flora 21 coral islands form a network of habitats for different kinds of fishes and constitute rich biodiversity of marine organisms. Gulf and marine organisms. Fish samples were collected during April 2005 of Mannar Ecosystem (GOME) covers an area spread over to March 2010 from different centers viz., Vembar, Tharuvaikulam, Rameswaram and Kanyakumari to about 19,000 km2. GOME Vellapatti, Therespuram, Tuticorin, Alangarathattu, Pazhaykayal, lies between 78°11’00” E and 79°15’00” E longitude and Punnakayal, Kayalpattinam, Veerapandiapattinam, Thiruchendur and 8°49’00” N and 9°15’00” N latitude.
  • Marine and Estuarine Fish Fauna of Tamil Nadu, India

    Marine and Estuarine Fish Fauna of Tamil Nadu, India

    Proceedings of the International Academy of Ecology and Environmental Sciences, 2018, 8(4): 231-271 Article Marine and estuarine fish fauna of Tamil Nadu, India 1,2 3 1 1 H.S. Mogalekar , J. Canciyal , D.S. Patadia , C. Sudhan 1Fisheries College and Research Institute, Thoothukudi - 628 008, Tamil Nadu, India 2College of Fisheries, Dholi, Muzaffarpur - 843 121, Bihar, India 3Central Inland Fisheries Research Institute, Barrackpore, Kolkata - 700 120, West Bengal, India E-mail: [email protected] Received 20 June 2018; Accepted 25 July 2018; Published 1 December 2018 Abstract Varied marine and estuarine ecosystems of Tamil Nadu endowed with diverse fish fauna. A total of 1656 fish species under two classes, 40 orders, 191 families and 683 geranra reported from marine and estuarine waters of Tamil Nadu. In the checklist, 1075 fish species were primary marine water and remaining 581 species were diadromus. In total, 128 species were reported under class Elasmobranchii (11 orders, 36 families and 70 genera) and 1528 species under class Actinopterygii (29 orders, 155 families and 613 genera). The top five order with diverse species composition were Perciformes (932 species; 56.29% of the total fauna), Tetraodontiformes (99 species), Pleuronectiforms (77 species), Clupeiformes (72 species) and Scorpaeniformes (69 species). At the family level, the Gobiidae has the greatest number of species (86 species), followed by the Carangidae (65 species), Labridae (64 species) and Serranidae (63 species). Fishery status assessment revealed existence of 1029 species worth for capture fishery, 425 species worth for aquarium fishery, 84 species worth for culture fishery, 242 species worth for sport fishery and 60 species worth for bait fishery.
  • Redescriptions of the Three Pleuronectiform Fishes (Samaridae and Soleidae) from Korea

    Redescriptions of the Three Pleuronectiform Fishes (Samaridae and Soleidae) from Korea

    Korean J. Ichthyol. 19(1), 73~80, 2007 Redescriptions of the Three Pleuronectiform Fishes (Samaridae and Soleidae) from Korea Jeong-Ho Park, Jin Koo Kim*, Jung Hwa Choi and Dae Soo Chang Fisheries Resources Research Team, National Fisheries Research and Development Institute, 408-1 Sirang-ri, Gijang-gun, Busan 619-902, Korea Three pleuronectiform fishes are redescribed based on specimens from southern sea of Korea. A single specimen (73.4 mm SL) of Samariscus japonicus of the family Samaridae is characterized by having no pectoral fin on blind side and 5 pectoral fin rays on ocular side of body. Twenty specimens (53.6~125.8 mm SL) of Plagiopsetta glossa of the same family are characterized by having 8~10 pectoral fin rays and 6 black ring-shaped blotches on ocular side of body. Three specimens (74.1~83.4 mm SL) of Aseraggodes kaianus of the family Soleidae are characterized by having blackish-brown reticulations on ocular side of body. Key words : Redescription, Pleuronectiformes, Samariscus japonicus, Plagiopsetta glossa, Aseraggodes kaianus Since Kim and Youn (1994) carried out the tax- form fishes on the basis of the Korean specimens onomic revision of the suborder Pleuronectoidei in detail and compare them with those of pre- from Korea firstly, Kim et al. (2005) have reco- vious studies for the first time. gnized six families and 52 species in the order Counts and measurements were followed those Pleuronectiformes from Korea. of Hubbs and Lagler (1964) and Nakabo (2002a). Concerning fishes of the East China Sea and Number of vertebrae and median fin rays were the Yellow Sea, Yamada et al.