Study of Trochus Niloticus Growth Population as Determination Base of Number and Harvest Time www.iosrjournals.org 45 Trochus niloticus, also known as topshells or topsnails, are targeted for their shells which contain a layer of mother-of-pearl. The shell is utilised both domestically and internationally in the manufacture of jewellery. The marine topshell Trochus niloticus (. Intermediate culture in reef-based cages may be an effective approach for providing sub-adults for restocking. Trochus - Wikipedia, the free encyclopedia. Trochus is a genus of medium- sized to large, top- shaped sea snails with an operculum and a pearly inside to their shells, marinegastropodmolluscs in the family. Trochidae, the top snails. Tectus niloticus is no longer classified as a Trochus species, and it is no longer classified in the family Trochidae; it is now placed in the family Tegulidae. History. Linnaeus' genus Trochus is composed principally of true Trochidae, but it is now viewed as having contained species of several other very different families. Lamarck still further restricted the group, by eliminating several genera; and in the 1. Gray, H. Adams and others, contributed towards a more systematic arrangement of the family. The periphery is angulated. The base of the shell is flat or convex. The outer and basal lips are smooth within. The columella has a strong fold above, ending in an obtuse tooth below. Adams, 1. 85. 1)Trochus erithreus. Brocchi, 1. 82. 1Trochus ferreirai. Bozzetti, 1. 99. 6Trochus firmus. Philippi, 1. 84. 9Trochus flammulatus. EXPERIMENTS ON USING HATCHERY-REARED JUVENILES TO ENHANCE STOCKS OF THE TOPSHELL TROCHUS NILOTICUS IN VIETNAM Do Huu Hoang*, Huynh Minh Sang, Nguyen Xuan Hoa, Hua Thai Tuyen & Hoang Duc Lu Institute of Oceanography, Nha Trang. Member of saltwater shell mollusk with inverted top shaped, hard shell consisted of iridescent mother-of-pearl and horny operculum. Found in tropical waters. Used as ornamental such as buttons and beads. Also called commercial. Research Proposal Attachment 2.3A Survey of Trochus niloticus in Torres Strait Background The Torres Strait Trochus Fishery (TSTF) is a single species (Trochus niloticus) fishery, having both commercial and subsistence. Dynamic Model Of Trochus Niloticus. Linn, In Resources Management, In Coastal Area Of Saparua www.iosrjournals.org 34 . Research Method Location and Time of Study. Trochus Niloticus Pdf FreeLamarck, 1. 82. 2Trochus fultoni. Melvill, 1. 89. 8Trochus histrio. Reeve, 1. 84. 8Trochus incrassatus. Lamarck, 1. 82. 2Trochus intextus. Kiener, 1. 85. 0Trochus kochii. Philippi, 1. 84. 4Trochus maculatus. Linnaeus, 1. 75. 8Trochus nigropunctatus. Reeve, 1. 86. 1Trochus noduliferus. Trochus Niloticus Pdf MergeOf these two species, Trochus niloticus was foimd to be more abundant in all the islands surveyed. The Trochus and Turbo resources of the different islands were surveyed during 1978 by the Central Marine. Trochus niloticus (Mollusca: Gastropoda). Home; Publications; Gallery. Statistics; Contacts. Lamarck, 1. 82. 2Trochus obesus. Reeve, 1. 86. 1Trochus ochroleucus. Gmelin, 1. 79. 1Trochus radiatus. Gmelin, 1. 79. 1Trochus squarrosus. Lamarck, 1. 82. 2Trochus stellatus. Gmelin, 1. 79. 1Trochus subincarnatus. P. Fisher, 1. 87. Trochus tubiferus. Kiener, 1. 85. 0Trochus zhangi. Dong, 2. 00. 2The following species were brought into synonymy. Smith, 1. 89. 1: synonym of Bathybembix abyssorum (E. Smith, 1. 89. 1)Trochus acinosus Gould, 1. Coelotrochus viridis (Gmelin, 1. Trochus acuminatus Wood, 1. Bembicium nanum (Lamarck, 1. Trochus acuminatus Perry, 1. Cantharidus opalus (Martyn, 1. Trochus acutangulus. Philippi : synonym of Trochus maculatus. Linnaeus, 1. 75. 8Trochus adansoni . Adams, 1. 84. 2)Trochus albidus Wood W., 1. Calliostoma zizyphinum (Linnaeus, 1. Trochus albidus Gmelin, 1. Gibbula albida (Gmelin, 1. Trochus altus. Reeve (non Philippi), 1. Trochus maculatus. Linnaeus, 1. 75. 8Trochus alveolatus Philippi, 1. Gibbula spratti (Forbes, 1. Trochus amabilis Jeffreys, 1. Solariella amabilis (Jeffreys, 1. Trochus americanus Gmelin, 1. Lithopoma americanum (Gmelin, 1. Trochus angulatus Tokunaga, 1. Conotalopia ornata (G. Sowerby III, 1. 90. Trochus anomala d'Orbigny, 1. Vitrinella anomala (d'Orbigny, 1. Trochus ardens Salis Marschlins, 1. Gibbula ardens (Salis Marschlins, 1. Trochus areola Gmelin, 1. Heliacus (Heliacus) areola areola (Gmelin, 1. Heliacus areola (Gmelin, 1. Trochus argenteonitens Lischke, 1. Ginebis argenteonitens (Lischke, 1. Trochus armillatus Wood, 1. Astele armillata (Wood, 1. Trochus articulatus (Lamarck, 1. Phorcus articulatus (Lamarck, 1. Trochus asper Gmelin, 1. Euchelus asper (Gmelin, 1. Trochus asteriscus Reeve, 1. Astralium asteriscum (Reeve, 1. Trochus atratus Wood, 1. Osilinus atratus (Wood, 1. Trochus attenuatus Jonas, 1. Tosatrochus attenuatus (Jonas, 1. Trochus auratus Quoy & Gaimard, 1. Bembicium auratum (Quoy & Gaimard, 1. Trochus aureus Jonas, 1. Bellastraea aurea (Jonas, 1. Trochus baccatus G. B. Sowerby, 1. 88. Infundibulops cariniferus (Reeve, 1. Trochus basteroti Hoernes, 1. Gibbula adriatica (Philippi, 1. Trochus baudoni Monterosato, 1. Jujubinus baudoni (Monterosato, 1. Trochus belcheri Philippi, 1. Monilea belcheri (Philippi, 1. Trochus bellardii Issel, 1. Ethalia bellardii (Issel, 1. Trochus biasoletti Philippi, 1. Gibbula albida (Gmelin, 1. Trochus bicanaliculatus Dunker in Philippi, 1. Diloma bicanaliculata (Dunker in Philippi, 1. Trochus bicarinatus. Gray J. E., 1. 83. Gibbula magus(Linnaeus, 1. Trochus bicolor. Perry, G., 1. Trochus radiatus. Gmelin, 1. 79. 1Trochus bicolor. Risso, 1. 82. 6: synonym of Jujubinus exasperatus(Pennant, 1. Trochus bilabiatus Philippi, 1. Danilia tinei (Calcara, 1. Trochus bornii Cantraine, 1. Gibbula albida (Gmelin, 1. Trochus brevispina Lamarck, 1. Lithopoma brevispina (Lamarck, 1. Trochus broderipi Philippi, 1. Astele rubiginosa (Valenciennes, 1. Trochus brunneus Philippi, 1. Tegula brunnea (Philippi, 1. Trochus caelatus Gmelin, 1. Lithopoma caelatum (Gmelin, 1. Trochus calcaratus Souverbie in Souverbie & Montrouzier, 1. Infundibulum calcaratum (Souverbie in Souverbie & Montrouzier, 1. Trochus callicoccus. Philippi, 1. 84. 9: synonym of Trochus maculatus. Linnaeus, 1. 75. 8Trochus calliferus Lamarck, 1. Monilea callifera (Lamarck, 1. Trochus callosus Koch in Philippi, 1. Ethalia sanguinea Pilsbry, 1. Trochus calyptraeformis Lamarck, 1. Sigapatella calyptraeformis (Lamarck, 1. Trochus canaliculatus Lamarck, 1. Euchelus atratus (Gmelin, 1. Trochus cancellatus Jeffreys, 1. Vetulonia paucivaricosa (Dautzenberg, 1. Trochus candei d'Orbigny, 1. Gibbula candei (d'Orbigny, 1. Trochus capensis Gmelin, 1. Gibbula capensis (Gmelin, 1. Trochus carinatus d'Orbigny, 1. Vitrinella carinata (d'Orbigny, 1. Trochus charopus Watson, 1. Solariella charopa (Watson, 1. Trochus chemnitzii Philippi, 1. Calliostoma zizyphinum (Linnaeus, 1. Trochus chinensis Philippi, 1. Stellaria chinensis (Philippi, 1. Trochus chrysolaemus Martens, 1. Priotrochus goudoti (Fischer, 1. Trochus cicatricosus Philippi, 1. Bembicium auratum (Quoy & Gaimard, 1. Trochus cicer Menke, 1. Gibbula cicer (Menke, 1. Trochus ciliaris Menke, 1. Astele ciliaris (Menke, 1. Trochus cinctus Philippi, 1. Solariella cincta (Philippi, 1. Trochus cinerarius Linnaeus, 1. Gibbula cineraria (Linnaeus, 1. Trochus cinerascens Anton, 1. Gibbula leucophaea (Philippi, 1. Trochus cinereus Blainville, 1. Linnaeus, 1. 75. 8: synonym of Gibbula umbilicalis (da Costa, 1. Trochus cingulatus Grube, 1. Jujubinus striatus (Linnaeus, 1. Trochus circulatus Anton, 1. Euchelus circulatus (Anton, 1. Trochus clanguloides Wood, 1. Clanculus clanguloides (Wood, 1. Trochus clathratus Aradas, 1. Putzeysia wiseri (Calcara, 1. Trochus clelandi W. Wood, 1. 82. 8: synonym of Clelandella miliaris (Brocchi, 1. Trochus clodianus Nardo, 1. Gibbula albida (Gmelin, 1. Trochus colubrinus Gould, 1. Phorcus sauciatus (Koch, 1. Trochus concameratus W. Wood, 1. 82. 8: synonym of Diloma concamerata (Wood, 1. Trochus concavus Gmelin, 1. Infundibulum concavum (Gmelin, 1. Trochus conchyliophorus Born, 1. Xenophora conchyliophora (Born, 1. Trochus concinnus. Philippi, 1. 84. 6: synonym of Trochus tubiferus. Kiener, 1. 85. 0Trochus conicus Donovan, 1. Jujubinus striatus (Linnaeus, 1. Trochus conoidalis Pease, 1. Peasiella conoidalis (Pease, 1. Trochus consors Lischke, 1. Calliostoma consors (Lischke, 1. Trochus constellatus Souverbie, 1. Diloma constellata Souverbie, 1. Trochus conuloides Lamarck, 1. Calliostoma zizyphinum (Linnaeus, 1. Trochus conulus Linnaeus, 1. Calliostoma conulus (Linnaeus, 1. Trochus cookii Gmelin, 1. Cookia sulcata (Lightfoot, 1. Trochus corallinus E. A. Smith, 1. 87. 5: synonym of Homalopoma amussitatum (Gould, 1. Trochus corallinus Gmelin, 1. Clanculus corallinus (Gmelin, 1. Trochus corcyrensis. Stossich, 1. 86. 5: synonym of Phorcus articulatus(Lamarck, 1. Trochus corrugata. Koch, 1. 84. 3: synonym of Monilea callifera(Lamarck, 1. Trochus cossurensis. Monterosato, 1. 87. Gibbula rarilineata(Michaud, 1. Trochus costalis Gould, 1. Margarites costalis (Gould, 1. Trochus cranchi Leach, 1. Calliostoma zizyphinum (Linnaeus, 1. Trochus crassus (Pulteney, 1. Osilinus lineatus (da Costa, 1. Trochus creniferus. Kiener: synonym of Trochus incrassatus. Lamarck, 1. 82. 2Trochus crenulatus Brocchi, 1. Jujubinus exasperatus (Pennant, 1. Trochus crispulus Philippi, 1. Putzeysia wiseri (Calcara, 1. Trochus crispus K. Seguenza, 1. 87. 6)Trochus delpretei Caramagna, 1. Vaceuchelus delpretei (Caramagna, 1. Trochus dentatus Forsk. Fischer, 1. 87. 9: synonym of Spectamen bellulus (Angas, 1. Trochus diaphanus Gmelin, 1. Calliostoma punctulatum (Martyn, 1. Trochus diaphanus d'Orbigny, 1. Vitrinella diaphana (d'Orbigny, 1. Trochus dilectus Sowerby III, 1. Pseudominolia articulata (Gould, 1. Trochus diminutivus Reeve, 1. Peasiella tantilla (Gould, 1. Trochus discrepans Brown, 1. Calliostoma zizyphinum (Linnaeus, 1. Trochus divaricatus Fabricius, 1. Lacuna vincta (Montagu, 1. Trochus divaricatus Linnaeus, 1. Gibbula divaricata (Linnaeus, 1. Trochus dnopherus Watson, 1. Margarites dnopherus (Watson, 1. Trochus dolabratus Linnaeus, 1. Pyramidella dolabrata (Linnaeus, 1. Trochus drepanensis Brugnone, 1. Gibbula drepanensis (Brugnone, 1. Trochus dubius Philippi, 1. Calliostoma conulum (Linnaeus, 1. Calliostoma conulus (Linnaeus, 1. Trochus dumerili Risso, 1. Jujubinus exasperatus (Pennant, 1. Trochus elatus Brusina, 1. Gibbula varia (Linnaeus, 1. Trochus electissimus Bean in Thorpe, 1. Fischer, 1. 87. 4: synonym of Rubritrochus pulcherrimus (A. Adams, 1. 85. 5)Trochus fanulum. Gmelin, 1. 79. 1: synonym of . Fischer, 1. 87. 8: synonym of Clanculus flosculus P. Fischer, 1. 88. 0Trochus fonki Philippi, 1. Calliostoma fonki (Philippi, 1. Trochus formosus. Mc. Andrew & Forbes, 1. Calliostoma occidentale (Mighels & C. Adams, 1. 84. 2)Trochus forskali(Bolt.) Morch: synonym of Trochus noduliferus. Lamarck, 1. 82. 2Trochus fossulatulus. Souverbie in Souverbie & Montrouzier, 1. Hybochelus cancellatus(Krauss, 1. Trochus fragilis. Pulteney, 1. 79. 9: synonym of Calliostoma granulatum(Born, 1. Trochus fragum Philippi, 1. Calliostoma fragum (Philippi, 1. Trochus fultoni G. B. Sowerby III, 1. Cantharidus fultoni (G. Sowerby III, 1. 89. Trochus fulvolabris Hmobron & Jacquinot, 1. Coelotrochus viridis (Gmelin, 1. Trochus fuscatus Gmelin, 1. Gibbula umbilicaris (Linnaeus, 1. Trochus gemmatus Gould, 1. Euchelus gemmatus (Gould, 1. Trochus gemmosus Reeve, 1. Astele rubiginosa (Valenciennes, 1. Trochus gibberosus Dillwyn, 1. Pomaulax gibberosus (Dillwyn, 1. Trochus gibbosulus Brusina, 1. Gibbula varia (Linnaeus, 1. Trochus gilberti Montrouzier in Fischer, 1. Cantharidus polychroma (A. Adams, 1. 85. 3)Trochus girgyllus Reeve, 1. Bolma girgyllus (Reeve, 1. Trochus glabratus Philippi, 1. Cantrainea peloritana (Cantraine, 1. Trochus gmelini. Jonas, 1. Trochus maculatus.
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