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Synopsis of Biological Data on the Blue Withing Micromesistius

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Synopsis of Biological Data on the Blue Withing Micromesistius FAO Fisheries Synopsis No. 34 Rev, i FRiui/34 (Fìv. 1) (Distribution restricted) SAST - i-lue whiting 1,3(O4),O33,O1 SYNOPSIS OF BIOLOGICALAT ON TH BLUE iITING LonJesistP7s poutassou (Su, 1810) Prepared by DFS. Raitt FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS Rome, 1968 DOCUMENTS OF THE FISHERY DOCUMENTS DE LA DIVISION DOCUMENTOS DE LA DRECCION RESOURCES AND EXPLOITATION DES RESSOURCES ET DE L'EX- DE RECURSOS PESQUEROS Y EX- DIVISION OF FAO DEPARTMENT PLOITATION DES PECHES DU DE- PLOTACION DEL DEPARTAMENTO OF FISHERIES PARTEMENT DES PECHES DE LA DE PESCA DE LA FAO FAO Documents which arenotofficial Des documents qui ne figurent pas Esta Subdirección publica varias se- FAO publications are issued in several parmi les publications officielles de la ries de documentos que no pueden series.They are given arestricted FAO sont publiés dans diverses séries. considerarse como publicacionesofi- distribution and thisfact should be Ils font seulement l'objet d'une distri- ciales de la FAO. Todos ellos tienen indicatedifthey are cited. Most of bution restreinte, aussi convient-il de distribución limitada, circunstancia que them are prepared as working papers le préciser lorsque ces documents sont debe indicarse en el caso de ser ci- for meetings, or are summaries of infor- cités.Ils'agit le plus souvent de do- tados. La mayoría de los títulos que mationforuse of member govern- cuments de travail préparés pour des figuranen dichas series son docu- ments, organizations, and specialists réunions, ou de résumés d'information mentos de trabajo preparados para concerned. à l'intention des gouvernements des reuniones o resúmenes de Información pays membres, ainsi que des organi- destinados alos estados miembros, sations et spécialistes intéressés. Ces organizaciones y especialistas intere- séries sont les suivantes: sados. FAO Fisheries Report FR/R (No.) FAO Fisheries Circular FR/C (No.) FAO Fisheries Synopsis FR/S (No.) Special groups of synopses are iden- Des catégories spéciales de synopses Grupos especiales de sinopsis se tified by symbols followed by classifi- sont identifiées à l'aide de symboles distinguen conlassiglas siguientes, cation numbers based on indexed code suivis des chiffres de classification ba- seguidas por números de clasificación of "Current Bibliography": sés sur le code d'indexation dela que se basan en las claves de los in- « Current Bibliography »: dices de la 'Current Bibliography «. SAST Data concerningcertainspe- SAST Données sur certaines espèces SAST Datos relativos a ciertas espe- cies and fish stocks. et populations de poissons. cies y poblaciones. MAST Informationonmethods and MAST Renseignements sur des mé- MAST Sinopsis sobre métodos y ma- subjects. thodes et des sujets. terias. OT Oceanographic data. OT Données océanographiques. OT Sinopsis sobre oceanografia. IT Limnological data. IT Données limnologiques. IT Sinopsis sobre limnología. and et y CART Information concerning fish- CART Renseignements sur les pêche- CART Información sobre los recursos eries and resources of certain ries et les ressources de cer- acuáticos vivos de algunos countries and regions (FID/S). tains pays et régions (FD/S). países y regiones (FID/S). FAO Fisheries Technical Paper FR/T (No.) Special groups of Technical Papers Des catégories spéciales de docu- Grupos especiales de documentos are identified by: ments techniques sontidentifiéesà técnicos se identifican por las siglas l'aide des symboles suivants: siguientes: RE Indexedlistsofexpertsand RE Listes indexéesd'expertset RE Listas índices de expertos y de institutions drawn fromRegis- institutions tirées des registres institucionestomadasdelos ters maintained by the Fishery tenus à jour parlaDivision registros que se llevan en la Resources and ExploitationDi- des ressources et de l'exploi- Dirección de Recursos Pesque- vision. tation des pêches. ros y Explotación. C Listsofperiodicals, special CB Listes de périodiques, des sec- CB Listas de periódicos, secciones sections of "Current Bibliogra- tions spéciales de la « Current especiales de la'Current Bi- phy for Aquatic Sciences and Bibliography for Aquatic Scien- bliography for Aquatic Scien- Fisheries," special bibliogra- ces and Fisheries », des biblio- ces and Fisheries »,bibliogra- phies and papers concerning graphiesparticulièresetdes fías especiales y trabajosrela- documentation problems. articles sur les problèmes de tivos a los problemas de docu- documentation. mentación. MFS Provisionaleditionsof"FAO MFS Editions provisoires des Ma- MFS Ediciones provisionales de los Manuals in Fisheries Science." nuels FAO de science halieuti- «Manuales de la FAO de que ». Ciencias Pesqueras «. Some documents also have another Certains documents portent d'autres Algunos documentos tienen también identification, if, for example, they have numéros d'identification, par exemple, otra identificación si, por ejemplo, son beencontributedtoa meetingfor s'ils ont été préparés pour une réu- contribuciones a una reunión cuyos which papers have been numbered nion dont les documents ont été mar- documentos han sido marcados con according to another system. qués à l'aide d'un autre système. arreglo a otros sistemas. FAO Fisheries Synopsis No.34 Rev.i FRm/S34 (Rov,1) (Distribution restricted SAST Blue whiting 1,48 04 033 01 SYNOPSIS OP BIOLOGICAL DATA ON ThS BLUU WUITING Microinesietius pout eeou (Risso, 1810) Prepared by D.F.S., RAITT Marine Laboratory Aberdeen, Scotland FOOD AND AGRICULTURZ ORGANIZATION OF THB UNITBO NATIONS Rome, July 1968 PREPARATION OP ThIs SYNOPSIS A revision of the proviaiont1. version iesud in September 1966 for presenta- tion at the ICES Symposium on The Bcology of Pelagic Fish Specie. in Arctic Watore, Copenb.on 50 September - October l966 Distribution "Current Bibliography" entry Author Raitt, D.F.S. (1968) 14-6M124 FAO Department of Fieheries FAO Fieh.Snope., (34)ReV.: pag.var, FAO Regional Fisheries Officers Synopeis of biological data on the Regional Fisheries Councilsnd blue whiting Micromoeietiue poutassou Conuaioeiono (R.Leso, 1810) Selector SM NE 14-6M13 PRm $54 Blue whitin: Rev.1 CON T E N T S Page 1 IDENTITY 1:1 1.1. Nomenclature j 1.11 Valid name 1 1.12 Øbective synonymy 1 1.2 Taxonomy j 1.21 Affinities j 1.22 Taxonomic status j 1.23 Subspecies* 1.24 Standard common names, vernacular names i 1.5 Morphology 1051 External morphole7 2 1.52 Cytomorphology5 1.55 Protein opecificity 2 DISTRIBUTION 21 2.1Total area 1 2,2 Differential d-tribution j 2.21 Spawn, larvae anduv.nil.. 1 2.22 Adults 4 2.5 Determinants of distribution changes 4 2.4 Bybridizstion* $ BIONOMICS MiD LIFE HISTORY 5:1 5.1 Reproduction 1 511 Sexuality i 5.12 Maturity 3.13 Mating* 5.14 Fertilization i 5.15 Gonade i 5.16 Spawning 2 3,17 Spawn 2 iv FRm/S34 Blue whiting (Rev.1 Page 3.2 Preadult phase 3:2 3.21 Bmbryonic phase 2 3.22 Larval phase 4 3.23 Adolescent phase 4 3.3 Adult phase 4 3,31 Longevity 4 3.32 Hardiness* 3.33 Competitors 4 3.34 Predators 4 3.35 Parasites, diseases, injuries and abnormalities 4 3.4 Nutrition and growth 4 3,41 Feeding 4 3,42 Food 4 3.43 Growth rate 4 3.44 Metabolism* 3.5 Behaviour 8 3.51 Migrations and local movements 8 3.52 Schooling 8 3,53 Responses to etimuli* 4 POPULATION 4:1 4.1 Structure i. 4.11 Sex ratio I 4.12 Age composition i 4.13 Size composition i 4.2 Abundance and density i 4,21 Average abundance 4.22 Changes in abundance 4.23 Average density* 4.24 Changes in density* 4.3 Natality and recruitment* 4.4 Mortality and Morbidity* FRm S34 Blue whitin: Rev.1 Page 4,5 Dynamics of population* 4,6 The population in the community and the ecosystem 4:4 5 BXPLOITATION 5:1 5.1Fishing equipment 1 5.11 Gear 1 5.12 Boats 1 5.2 Fishing areas 5.21 General geographic distribution 5.22 Geographic ranges 5,23 Depth ranges 5.24 Conditions of the grounds 5,3 Fishing seasons5 5,4 Fishing operations and results 5.41 Bffort and intensity5 5,42 Selectivity5 5.43 Catches i 6 PROTBCTION AND MANIiC HNT 7 POND FISH 8 RßFBRBNCBS 8:1 * As no informationwas available to the author, these items have been oiunittod from the text, FRm/S34 Blue whiting (Rev.].) 1:1 1. IDENTITY supraorbital canal and 1 in the supra- orbital commissure. The mucous cavity 1.1 Nomenclature is closed in front. The facial nerve exits from the side of the skull through 1.11 Valid name a foramen." Micromesistius poutassou (Risso, - Specific 1810) Micromesistjus poutassou (Risso) 1,12 Objective synonymy Type : Gadus merlangus (non L.) Merlangus pouassou Risso, 1826 Risso, Ichth. Nice, 1810:115 M. vernalis Risso, 1826 LpertusuG Cocco, 1829 ID 12-15; lID 9-15; hID 22-28; M. comnitinis Costa, 1850 IA 30-42; lIA 24-30; pectoral fins GaduQ melanostomus Niisson, 1853 19-23; pelvic fins 6; gill-rakers 27-33 (23-26 on tue lower limb of the gill 1.2 Taxonomy arch); vertebrae 55-59, vertebrae bear- ing the first haemal arch 23-27. Colour- 1.21 Affinities ation bluish-grey on back, lighter on the sidos, silvery; belly milk-white; small - Suprageneric dark spot, sometimes absent, at the base of the pectoral fin. Length to 40 cm, Phylum Vertebrata seldom larger. After Williamson (1908), Series Pisces Svetovidov (1948) and Kandier and Class Tei.eostomi Kiechhafer (1966). Intestine with 8-14 Subclass Actinopterygii pyloric caeca (Raitt, 1962). Order Cadiformee Family Gadidae Above description based on specimens Subfamily Gadihae from north-east Atlantic only. - Generic - Subjective Synonymy Micromesistiug Gill, Proc.Acad.Nat. Sci.Phila., (1863), 1864:231. Gadus merlangus Risso, 1810 11er1angus albus Yarreil, 1841 3enotype: Gadus potassoa DUben, 1846 Pollachius poutassou Bonaparte, 1846 Merlangue poutassou Risso Gadus poutassou Gunther, 1862 Micromesistius poutassou Gill, 1864 The following generic concept is Boreogadus poutassou Maim, 1877 that given by Svetovidov (1948): Key to the species of Micromesistius "The dorsal and anal fins are (after Svetovidov, 1948) divided by spaces, The space between the first and second dorsal fins is 23-26 gill-rakers on the lower limb greater than the diameter of the eye, of the first gill arch, 27-33 on the space between the second and third entire gill arch dorsal fins is greater than the base of M.
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