DOCSLIB.ORG

Comparative Analysis of Year-Classes Strength of Some Commercial Fishes in the Atlantic and Pacific Oceans and Adjacent Seas

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Comparative Analysis of Year-Classes Strength of Some Commercial Fishes in the Atlantic and Pacific Oceans and Adjacent Seas NOT TO BE CITED WITHOUT PRIOR REFERENCE TO THE AUTHOR(S) Northwest Atlantic Fisheries Organization Serial No. N5878 NAFO SCR Doc. 11/003 SCIENTIFIC COUNCIL MEETING – JUNE 2011 Comparative analysis of year-classes strength of some commercial fishes in the Atlantic and Pacific Oceans and adjacent seas V.А. Rikhter and P.А. Bukatin Atlantic Research Institute of Marine Fisheries and Oceanography (AtlantNIRO) 5, Dm. Donskoy Str., 236022 Kaliningrad, Russia Tel. 007 (4012) 925547, Faх 007 (4012) 219997, E-mail: [email protected] ABSTRACT The comparative analysis of year-classes strength of 72 fish populations in the Atlantic and Pacific Oceans was carried out using the abundance criteria proposed in this study. The results obtained, at least concerning NAFO and ICES areas, evidence in favor of non-randomness of simultaneous occurrence of abundant and poor year-classes in fish populations, including populations of different species quite often separated by large distances. The years, when strong and weak year-classes appeared, were considered as the years with favorable and unfavorable environment conditions for year-classes abundance formation. The opinion has been advanced that similarity found sometimes in the abundance dynamics of several populations, was determined by common reasons and may be explained with the theory by G.К. Izhevskiy (1961, 1964), which relates fish reproduction and interdependency of hydro- and atmospheric processes. The attempt has been made to interpret the relationship between the number of cases of especially favorable and unfavorable conditions occurrence and the number of respective populations in the certain areas of the World Ocean as the indicator of fish stocks productivity increase and reduction. Introduction In our opinion, at present no appropriate attention is given to the subject indicated in the title of this paper, though it is directly related to the processes occurred in various areas of the World Ocean. Similar researches were carried out in restricted limits by some scientists in the middle of the last century (Cushing, 1975; Tåning, 1953; Templeman, 1965, 1972). These researches were focused at populations of cod, haddock and herring in the North Atlantic Ocean. The obtained results, which were actually based on the analysis of 10 populations only, indicated that in some years strong year-classes appeared in 9 populations simultaneously. Since then much water has flowed under the bridges, however, researches of this subject are still very important. The purpose of this study was to reveal populations with simultaneous (in the same year) appearance of strong (or weak) year-classes and on this basis to attempt distinguishing the years, when the environment conditions seems to be especially favorable (or unfavorable) for year-classes abundance formation in some fish populations. Material and Methods Retrospective estimates of year-classes abundance (the year-classes entering fishery for the first time) obtained from NAFO scientific documents, ICES Working Groups Reports and the data base created by the Canadian scientist R.A. Myers, Department of Biology, Dalhousie University, Halifax, Canada, http://fish.dal.ca/welcome.htlm) were used as the source material. The authors had got in all the data for 72 fish populations including 44 species. The list of species and populations and the respective sources of information are presented below. The Roman figures and letters after the species names denote ICES and NAFO statistical areas. 2 Populations (unit stocks) Sources North-Western Atlantic Ocean NAFO scientific document (NAFO area) Cod (Gadus morhua), 2J+3KL Baird and Bishop, 1986 Cod, 3NO Morgan et al., 2007 Greenland halibut (Reinhardtius hippoglоssoides), 2+3 Healy and Мahe, 2005 American plaice (Hippoglossoides platessoides), Dwyer et al., 2007 3LNO North-Eastern Atlantic Ocean, Arctic, North and ICES Reports Baltic Seas (ICES area) Cod, I and II ICES, 2006a Haddock (Melanogrammus aeglephfinus), I and II Pollock (Pollachius virens), I and II Greenland halibut, I and II Cod, 347d ICES, 2006b Haddock, IV and IIIa Pollock, IV, VI and IIIa European plaice (Pleuronectes platessa), North Sea Cod, 25-32 ICES, 2006c Norwegian spring-spawning herring (Сlupea harengus) ICES, 2007a North Sea herring ICES, 2007b Atlantic herring, VIa (S) and VIIbc Western Baltic herring, IIIa and 22-24 European pilchard (Sardina pilchardus), VIII and IXa ICES, 2007c Atlantic mackerel (Scomber scombrus), NEA Below the list of populations is presented, the respective information for which is available in the Mayers’ data base freely assessable at the address indicated above. Cod, NAFO 3М Cod, NAFO 3Ps Cod NAFO 4RS Cod, NAFO 4VsW Cod, NAFO 4Х Cod, NAFO 5Z Haddock, NAFO 4TVW Haddock, 5Ze Silver hake (Merluccius bilinearis), NAFO 4VWX Silver hake, NAFO 5Ze Silver hake, NAFO 5Zw+6 White hake (Urophycis tenuis), NAFO 4Т Yellowtail flounder (Limanda ferruginea), NAFO 5Zw+6 Atlantic mackerel, NAFO 2-6 Beaked redfish (Sebastes mentella), NAFO 3M Striped bass (Morone saxathilis), the USA eastern cost Red porgy (Pagrus pagrus), the USA eastern cost Dogfish (Squalus acanthias), NAFO 4-6 Lane snapper (Lutjanus synagris), Cuba area Bluefish (Pomatomus saltatrix), the USA eastern coast Weakfish (Cynoscion regalis), the USA eastern cost Cod, (Iceland area) Whiting (Merlangus merlangus), ICES IV and VIId Common dab (Limanda limanda), ICES (the Belt Sea) Norwey pout (Trisopterus esmarkii), ICES (the North Sea) Capelin (Mallotus villosus), ICES (the Barents Sea) 3 Capelin, ICES (Iceland area) Blue whiting (Micromesistius poutassou), ICES (the northern part) Atlantic herring, ICES VIa (the northern part) Cape hake (Merluccius capensis), South Africa area Pacific hake (Merluccius productus), the western coast of Canada and USA Walleye pollock (Theragra chalcogramma), the eastern Barents Sea Pacific code (Gadus macrocephalus), the western coast of Canada Longhead dab (Limanda proboscidea), the shelf of western Kamchatka Sakhalin sole (Limanda sakhalinensis), the shelf of western Kamchatka Yellowfin sole (Limanda aspera), the shelf of western Kamchatka Alaska plaice (Pleuronectes quadrituberculatus), the shelf of western Kamchatka Flathead flounder (Hippoglossoides elassodon), the shelf of western Kamchatka Rock sole (Lepidopsetta bilineata), the western coast of Canada Greenland halibut, (Reinhardtius hippoglossoides) the eastern Bering Sea Pacific halibut (Hippoglossus stenolepis) Black Sea turbot (Psetta maeotica), the Black Sea Pacific ocean perch (Sebastes alutus), the USA western cost Pacific ocean perch, the Aleutian Islands area Thornhead (Sebastolobus alascanus), Alaska Gulf Chillpepper rockfish (Sebastes goodei), the USA western cost Sablefish (Anaplopoma fimbria), the USA western cost Atka mackerel (Pleurogrammus monopterygius), the eastern Bering Sea Pacific herring (Clupea pallasii), the eastern Bering Sea Chub mackerel (Scomber japonicus), Japan area Peruvian anchovy (Engraulis ringens), Peru area Southern blue whiting (Micromesistius australis), New Zealand area Cape horse mackerel (Trachurus capensis), South Africa area Marbled notothenia (Notothenia rossi), South Georgia area The deviations from the long-term mean abundance were used as the criteria, which allow to judge the year-classes strength. Depending on the value of deviation to any side, the year-class strength was denoted by 0 (zero), + (plus) or – (minus). For the more accurate assessment of year-classes strength several categories were introduced, and each category corresponded to a certain range of percent deviations. The brief characteristic of the above said criteria are presented in Table 1 below. Table 1. Criteria of year-classes abundance Category of year-classes abundance Deviations from the long-term mean Symbols (strength) , % Medium ±20 0 Moderately high 21-50 + Moderately low 21-50 - High 51-80 ++ Low 51-80 -- Very high >80 +++ Very low >80 --- The ranges were selected not quite random but in such manner that each range includes sufficient number of fish year-classes of different populations and species. This condition is necessary to improve reliability of the results obtained at least at the qualitative level. As far as is known, this kind of classification has not been used in the comparative analysis of year-classes strength before. Besides, only the cases of strong year-classes appearance were considered, while research of weak year-classes formation is not less important objective. 4 Results and Discussion Year-classes strength of considered fish populations by years The above said criteria applied to the source data allowed to present the year-classes abundance in the form of Table 2, which is rather cumbersome, however, contains all required information for subsequent analysis. In the information presented some populations (and they are not few) with alternate series of abundant and poor year-classes are attracting attention. At the same time, the duration of continuous occurrence of the latter attains sometimes 20 years. It is interesting, that periods, when strong year-classes appeared, were much shorter. It is unlikely that the number of years with environment conditions unfavorable for young fish survival considerably exceeded the number of years with favorable conditions. Therefore, the reasons of the disproportion observed should be searched somewhere else. Probably, in the cases, when the spawning biomass decreases too much, the relationship stock-recruitment begins to act preventing the recovery process even during relatively
Load more

Recommended publications
  • Assessment of the Other Flatfish Stock Complex in the Bering Sea and Aleutian Islands
    11. Assessment of the other flatfish stock complex in the Bering Sea and Aleutian Islands Thomas K. Wilderbuer and Daniel G. Nichol Executive Summary Summary of Changes in Assessment Inputs Changes in the Input Data 1) The 2013 catch (total and discarded) was updated, and catch through 26 October, 2013 were included in the assessment. 2) The 2013 Eastern Bering Sea shelf survey biomass estimates and standard errors of other flatfish species are included in the assessment. Changes in the Assessment Methodology 1) There were no changes in the assessment methodology. Summary of Results A summary of the 2013 recommended ABCs and OFLs (in bold) relative to the 2012 recommendations for Other flatfish in the Bering Sea/Aleutian Islands (BSAI) is as follows: As estimated or As estimated or specified last year for: recommended this year for: Quantity 2013 2014 2014 2015 M (natural mortality rate) for rex sole 0.17 0.17 0.17 0.17 M (natural mortality rate) for Dover sole 0.085 0.085 0.085 0.085 M (natural mortality rate) for all others 0.15 0.15 0.15 0.15 Tier 5 5 5 5 Biomass (t) 114,200 114,200 107,500 107,500 FOFL (F=M) for rex sole 0.17 0.17 0.17 0.17 FOFL (F=M) for Dover sole 0.085 0.085 0.085 0.085 FOFL (F=M) for all other species 0.15 0.15 0.15 0.15 maxFABC for rex sole 0.13 0.13 0.13 0.13 maxFABC for Dover sole 0.064 0.064 0.064 0.064 maxFABC for all other species 0.113 0.113 0.113 0.113 FABC for rex sole 0.13 0.13 0.13 0.13 FABC for Dover sole 0.064 0.064 0.064 0.064 FABC for all other species 0.113 0.113 0.113 0.113 OFL (t) 17,800 17,800 16,700 16,700 maxABC (t) 13,300 13,300 12,400 12,400 ABC (t) 13,300 13,300 12,400 12,400 As determined last year for: As determined this year for: Status 2011 2012 2012 2013 Overfishing n/a n/a n/a n/a Responses to SSC and Plan Team Comments to Assessments in General There were no comments relative to the other flatfish assessment.
    [Show full text]
  • Identification of Larvae of Three Arctic Species of Limanda (Family Pleuronectidae)
    Identification of larvae of three arctic species of Limanda (Family Pleuronectidae) Morgan S. Busby, Deborah M. Blood & Ann C. Matarese Polar Biology ISSN 0722-4060 Polar Biol DOI 10.1007/s00300-017-2153-9 1 23 Your article is protected by copyright and all rights are held exclusively by 2017. This e- offprint is for personal use only and shall not be self-archived in electronic repositories. If you wish to self-archive your article, please use the accepted manuscript version for posting on your own website. You may further deposit the accepted manuscript version in any repository, provided it is only made publicly available 12 months after official publication or later and provided acknowledgement is given to the original source of publication and a link is inserted to the published article on Springer's website. The link must be accompanied by the following text: "The final publication is available at link.springer.com”. 1 23 Author's personal copy Polar Biol DOI 10.1007/s00300-017-2153-9 ORIGINAL PAPER Identification of larvae of three arctic species of Limanda (Family Pleuronectidae) 1 1 1 Morgan S. Busby • Deborah M. Blood • Ann C. Matarese Received: 28 September 2016 / Revised: 26 June 2017 / Accepted: 27 June 2017 Ó Springer-Verlag GmbH Germany 2017 Abstract Identification of fish larvae in Arctic marine for L. proboscidea in comparison to the other two species waters is problematic as descriptions of early-life-history provide additional evidence suggesting the genus Limanda stages exist for few species. Our goal in this study is to may be paraphyletic, as has been proposed in other studies.
    [Show full text]
  • Pleuronectidae
    FAMILY Pleuronectidae Rafinesque, 1815 - righteye flounders [=Heterosomes, Pleronetti, Pleuronectia, Diplochiria, Poissons plats, Leptosomata, Diprosopa, Asymmetrici, Platessoideae, Hippoglossoidinae, Psettichthyini, Isopsettini] Notes: Hétérosomes Duméril, 1805:132 [ref. 1151] (family) ? Pleuronectes [latinized to Heterosomi by Jarocki 1822:133, 284 [ref. 4984]; no stem of the type genus, not available, Article 11.7.1.1] Pleronetti Rafinesque, 1810b:14 [ref. 3595] (ordine) ? Pleuronectes [published not in latinized form before 1900; not available, Article 11.7.2] Pleuronectia Rafinesque, 1815:83 [ref. 3584] (family) Pleuronectes [senior objective synonym of Platessoideae Richardson, 1836; family name sometimes seen as Pleuronectiidae] Diplochiria Rafinesque, 1815:83 [ref. 3584] (subfamily) ? Pleuronectes [no stem of the type genus, not available, Article 11.7.1.1] Poissons plats Cuvier, 1816:218 [ref. 993] (family) Pleuronectes [no stem of the type genus, not available, Article 11.7.1.1] Leptosomata Goldfuss, 1820:VIII, 72 [ref. 1829] (family) ? Pleuronectes [no stem of the type genus, not available, Article 11.7.1.1] Diprosopa Latreille, 1825:126 [ref. 31889] (family) Platessa [no stem of the type genus, not available, Article 11.7.1.1] Asymmetrici Minding, 1832:VI, 89 [ref. 3022] (family) ? Pleuronectes [no stem of the type genus, not available, Article 11.7.1.1] Platessoideae Richardson, 1836:255 [ref. 3731] (family) Platessa [junior objective synonym of Pleuronectia Rafinesque, 1815, invalid, Article 61.3.2 Hippoglossoidinae Cooper & Chapleau, 1998:696, 706 [ref. 26711] (subfamily) Hippoglossoides Psettichthyini Cooper & Chapleau, 1998:708 [ref. 26711] (tribe) Psettichthys Isopsettini Cooper & Chapleau, 1998:709 [ref. 26711] (tribe) Isopsetta SUBFAMILY Atheresthinae Vinnikov et al., 2018 - righteye flounders GENUS Atheresthes Jordan & Gilbert, 1880 - righteye flounders [=Atheresthes Jordan [D.
    [Show full text]
  • Book of Abstracts
    PICES Seventeenth Annual Meeting Beyond observations to achieving understanding and forecasting in a changing North Pacific: Forward to the FUTURE North Pacific Marine Science Organization October 24 – November 2, 2008 Dalian, People’s Republic of China Contents Notes for Guidance ...................................................................................................................................... v Floor Plan for the Kempinski Hotel......................................................................................................... vi Keynote Lecture.........................................................................................................................................vii Schedules and Abstracts S1 Science Board Symposium Beyond observations to achieving understanding and forecasting in a changing North Pacific: Forward to the FUTURE......................................................................................................................... 1 S2 MONITOR/TCODE/BIO Topic Session Linking biology, chemistry, and physics in our observational systems – Present status and FUTURE needs .............................................................................................................................. 15 S3 MEQ Topic Session Species succession and long-term data set analysis pertaining to harmful algal blooms...................... 33 S4 FIS Topic Session Institutions and ecosystem-based approaches for sustainable fisheries under fluctuating marine resources ..............................................................................................................................................
    [Show full text]
  • Parasitic Copepods of Marine Fish Cultured in Japan: a Review Kazuya Nagasawa*
    Journal of Natural History, 2015 Vol. 49, Nos. 45–48, 2891–2903, http://dx.doi.org/10.1080/00222933.2015.1022615 Parasitic copepods of marine fish cultured in Japan: a review Kazuya Nagasawa* Graduate School of Biosphere Science, Hiroshima University, Hiroshima, Japan (Received 22 September 2014; accepted 4 February 2015; first published online 29 June 2015) This paper reviews aspects of the biology of copepods infecting marine fish commer- cially cultured at fish farms or held as broodstock at governmental hatcheries in Japan. In total, 20 species of parasitic copepods have been reported from these fish: they are mostly caligids (12 spp.), followed by lernaeopodids (4 spp.), pennellid (1 sp.), chondracanthid (1 sp.), taeniacanthid (1 sp.), and unidentified species (1 sp.). The identified copepods are: Caligus fugu, C. lagocephalus, C. lalandei, C. latigenitalis, C. longipedis, C. macarovi, C. orientalis, C. sclerotinosus, C. spinosus, Lepeophtheirus longiventralis, L. paralichthydis, L. salmonis (Caligidae); Alella macrotrachelus, Clavella parva, Parabrachiella hugu, P. seriolae (Lernaeopodidae); Peniculus minuti- caudae (Pennellidae); Acanthochondria priacanthi (Chondracanthidae); and Biacanthus pleuronichthydis (Taeniacanthidae). The fish recorded as hosts include carangids (4 spp.), sparids (2 spp.), monacanthids (2 spp.), salmonids (2 spp.), scom- brid (1 sp.), tetraodontid (1 sp.), pleuronectid (1 sp.), paralichthyid (1 sp.), and trichodontid (1 sp.). Only five species (C. orientalis, L. longiventralis, L. salmonis, C. parva and A. priacanthi) parasitize farmed fish in subarctic waters, while all other species (15 spp.) infect farmed fish in temperate waters. No information is yet avail- able on copepods from fish farmed in subtropical waters. Three species of Caligus (C. fugu, C. sclerotinosus and C.
    [Show full text]
  • 사할린가자미(Limanda Sakhalinensis) 자치어의 골격발달 한경호·이성훈·백정익1·박재민2*
    Original Article 한수지 52(4), 389-399, 2019 Korean J Fish Aquat Sci 52(4),389-399,2019 사할린가자미(Limanda sakhalinensis) 자치어의 골격발달 한경호·이성훈·백정익1·박재민2* 전남대학교 해양기술학부, 1국립수산과학원 수산자원연구센터, 2경상북도 토속어류산업화센터 Osteological Development of the Larvae and Juvenile in Sakhalin Sole Limanda sakhalinensis Kyeong-Ho Han, Seong-Hoon Lee, Jeong-Ik Baek1 and Jae-Min Park2* Marine Technology Undergraduate, Chonnam National University, Yeosu 59626, Korea 1Fisheries Resources Research Center, National Institute of Fisheries Science, Tongyeong 56034, Korea 2Gyeongsangbuk-Do Native Fish Business Center, Uiseong 37366, Korea This study is designed to observe the development of skeleton of Sakhalin sole Limanda sakhalinensis in order to use the findings as the basic data for the taxonomic research. As for the development of skeleton, on 20 days of the hatch when its average total length was 5.86 mm, the clavicle and the paraspenoid in the cranium were ossified. As for the jaw bone, the premaxillary and the dentary were ossified. On 28 days of hatch when its total length was 7.05 mm, 25 neural spines and 22 hemal spines were ossified and 5 fin rays appeared. On 34 days of hatch when its average total length was 8.40 mm, the end of tail was twisted by 45° and 3 hypural bones were ossified. On 48 days of hatch when its average total length was 10.1 mm, 2 actinosts below the postcleithrum were ossified. On 54 days of hatch, when the average total length was 10.4 mm, the ethmoid, prootic and exoccipital were ossified, thus completing the ossification of skeleton.
    [Show full text]
  • ASFIS ISSCAAP Fish List February 2007 Sorted on Scientific Name
    ASFIS ISSCAAP Fish List Sorted on Scientific Name February 2007 Scientific name English Name French name Spanish Name Code Abalistes stellaris (Bloch & Schneider 1801) Starry triggerfish AJS Abbottina rivularis (Basilewsky 1855) Chinese false gudgeon ABB Ablabys binotatus (Peters 1855) Redskinfish ABW Ablennes hians (Valenciennes 1846) Flat needlefish Orphie plate Agujón sable BAF Aborichthys elongatus Hora 1921 ABE Abralia andamanika Goodrich 1898 BLK Abralia veranyi (Rüppell 1844) Verany's enope squid Encornet de Verany Enoploluria de Verany BLJ Abraliopsis pfefferi (Verany 1837) Pfeffer's enope squid Encornet de Pfeffer Enoploluria de Pfeffer BJF Abramis brama (Linnaeus 1758) Freshwater bream Brème d'eau douce Brema común FBM Abramis spp Freshwater breams nei Brèmes d'eau douce nca Bremas nep FBR Abramites eques (Steindachner 1878) ABQ Abudefduf luridus (Cuvier 1830) Canary damsel AUU Abudefduf saxatilis (Linnaeus 1758) Sergeant-major ABU Abyssobrotula galatheae Nielsen 1977 OAG Abyssocottus elochini Taliev 1955 AEZ Abythites lepidogenys (Smith & Radcliffe 1913) AHD Acanella spp Branched bamboo coral KQL Acanthacaris caeca (A. Milne Edwards 1881) Atlantic deep-sea lobster Langoustine arganelle Cigala de fondo NTK Acanthacaris tenuimana Bate 1888 Prickly deep-sea lobster Langoustine spinuleuse Cigala raspa NHI Acanthalburnus microlepis (De Filippi 1861) Blackbrow bleak AHL Acanthaphritis barbata (Okamura & Kishida 1963) NHT Acantharchus pomotis (Baird 1855) Mud sunfish AKP Acanthaxius caespitosa (Squires 1979) Deepwater mud lobster Langouste
    [Show full text]
  • The Flounder Free
    FREE THE FLOUNDER PDF GГјnter Grass,Ralph Manheim | 560 pages | 21 Jul 1997 | Vintage Publishing | 9780749394851 | English | London, United Kingdom Flounder | fish | Britannica Flounderany of numerous species of flatfishes belonging to the families Achiropsettidae, Pleuronectidae, Paralichthyidae, and Bothidae order Pleuronectiformes. The flounder is morphogenetically unusual. When born it is bilaterally symmetrical, with an eye on each side, and it swims near the surface of the sea. After a few days, however, it begins to lean to one side, and the eye on that side begins to The Flounder to what eventually becomes the top side of the fish. With this development a number of other complex changes in bones, nerves, and muscles occur, and the underside of the flounder loses The Flounder colour. As an adult the fish lives on the bottom, with the eyed side uppermost. Included among the approximately species of the family Pleuronectidae are the European flounder Platichthys flesusa marine and freshwater food and sport fish of Europe that grows to a length of 50 cm 20 inches and weight of 2. Flounders in that family typically have the eyes and colouring on the right side. In the families Bothidae and Paralichthyidae, which together contain more than species, the better-known flounders include the summer flounder The Flounder dentatusan American Atlantic food fish growing to about 90 cm 35 inches ; the peacock flounder Bothus lunatusa tropical American Atlantic species attractively marked with many pale blue spots and rings; the brill Scophthalmus rhombusa relatively large commercial European species, reaching a length of 75 cm 29 inches ; and the dusky flounde r Syacium papillosuma tropical western Atlantic species.
    [Show full text]
  • F Latfishes Families Bothidae, Cvnoalossidae, and F'leuronectidae
    NORTHEAST PAC IF IC F latfishes Families Bothidae, Cvnoalossidae, and F'leuronectidae Ponald E, Kramer a i@i!liam H. Bares Brian C. F'aust + Barry E. Bracken illustrated by Terry Josey Alaska 5ea Grant Col/egeProgram Universityor Alaska Fa>rbanks P.O.Pox 755040 Fairbanks,Aiaska 99775-5040 907! 474-6707 ~ Fax 907! 47a 5285 Alaska Rshenes0eveioprnent Foundation 508 West seoono'Avenue, suite 212 Anonorage.Alaska 99501-2208 Marine Advisory Bulletin No. 47 a 1995 a $20.00 ElmerE. RasmusonLibrary Cataloging-in-Publication Data Guide to northeast Pacific flatfishes: families Bothidae, Cynoglossidae, and Pleuronectidae/by Donald E. Kramer ... Iet al,l Marine advisory bulletin; no. 47! 1. Flatfishes Identification. 2. Flattishes North Pacific Ocean. 3. Bothidae. 4. Cynoglossidae.5, Pleuronectidae. I. Kramer,Donald E. II. AlaskaSea Grant College Program. III. AlaskaFisheries Development Foundation. IV, Series. QL637.9.PSG85 1995 ISBN 1-5 !t2-032-2 Credits Thisbook is the resultof work sponsoredby the Universityof AlaskaSea GrantCollege Program, which is cooperativelysupported by the U.S,Depart- mentof Commerce,NOAA Office of SeaGrant and ExtramuralPrograms, undergrant no. NA4f! RG0104, projects A/7 I -01and A/75-01, and by the Universityof Alaskawith statefunds. The Universityof Alaskais an affirma- tive action/equal opportunity employer and educational institution. SeaGrant is a unique partnership with public and private sectors com- bining research,education, and technologytransfer for public service,This national network of universities meets
    [Show full text]
  • Other Flatfish
    CHAPTER 10 OTHER FLATFISH by Paul D. Spencer, Gary E. Walters, and Thomas K. Wilderbuer EXECUTIVE SUMMARY The following changes have been made to this assessment relative to the November 2002 SAFE: Changes in the input data 1) The 2002 catch (total and discarded) was updated, and catch through 20 September, 2003 were included in the assessment. 2) 2003 trawl survey biomass estimates and standard errors of other flatfish species were included in the assessment. Changes in assessment results 1) A summary of the harvest recommendations for 2003 is compared to the recommendations used in the 2002 assessment is as follows: 2002 Assessment 2003 Assessment recommendations recommendations Exploitable biomass 106,739 t 90,327 t ABC 14,691 t 13,549 t Overfishing 19,588 t 18, 065 t FABC 0.15 0.15 Foverfishing 0.20 0.20 INTRODUCTION The Bering Sea/Aleutian Islands “other flatfish” group have typically included those flatfish besides rock sole, yellowfin sole, arrowtooth flounder, and Greenland turbot. Flathead sole (Hippoglossoides elassodon) were part of the other flatfish complex until they were removed in 1995, and Alaska plaice was removed from the complex in 2002, as sufficient biological data exists for these species to construct age-structured population models. In contrast, survey biomass estimates are the principal data source used to assess the remaining other flatfish. Although over a dozen species (Table 1) of flatfish are found in the BSAI area, the other flatfish biomass consists primarily of starry flounder, rex sole, longhead dab, and butter sole. Catch History The miscellaneous species found in the other flatfish species category are listed in Table 1, and their catches from 1995-2003 are shown in Table 2.
    [Show full text]
  • RACE Species Codes and Survey Codes 2018
    Alaska Fisheries Science Center Resource Assessment and Conservation Engineering MAY 2019 GROUNDFISH SURVEY & SPECIES CODES U.S. Department of Commerce | National Oceanic and Atmospheric Administration | National Marine Fisheries Service SPECIES CODES Resource Assessment and Conservation Engineering Division LIST SPECIES CODE PAGE The Species Code listings given in this manual are the most complete and correct 1 NUMERICAL LISTING 1 copies of the RACE Division’s central Species Code database, as of: May 2019. This OF ALL SPECIES manual replaces all previous Species Code book versions. 2 ALPHABETICAL LISTING 35 OF FISHES The source of these listings is a single Species Code table maintained at the AFSC, Seattle. This source table, started during the 1950’s, now includes approximately 2651 3 ALPHABETICAL LISTING 47 OF INVERTEBRATES marine taxa from Pacific Northwest and Alaskan waters. SPECIES CODE LIMITS OF 4 70 in RACE division surveys. It is not a comprehensive list of all taxa potentially available MAJOR TAXONOMIC The Species Code book is a listing of codes used for fishes and invertebrates identified GROUPS to the surveys nor a hierarchical taxonomic key. It is a linear listing of codes applied GROUNDFISH SURVEY 76 levelsto individual listed under catch otherrecords. codes. Specifically, An individual a code specimen assigned is to only a genus represented or higher once refers by CODES (Appendix) anyto animals one code. identified only to that level. It does not include animals identified to lower The Code listing is periodically reviewed
    [Show full text]
  • 61661147.Pdf
    Resource Inventory of Marine and Estuarine Fishes of the West Coast and Alaska: A Checklist of North Pacific and Arctic Ocean Species from Baja California to the Alaska–Yukon Border OCS Study MMS 2005-030 and USGS/NBII 2005-001 Project Cooperation This research addressed an information need identified Milton S. Love by the USGS Western Fisheries Research Center and the Marine Science Institute University of California, Santa Barbara to the Department University of California of the Interior’s Minerals Management Service, Pacific Santa Barbara, CA 93106 OCS Region, Camarillo, California. The resource inventory [email protected] information was further supported by the USGS’s National www.id.ucsb.edu/lovelab Biological Information Infrastructure as part of its ongoing aquatic GAP project in Puget Sound, Washington. Catherine W. Mecklenburg T. Anthony Mecklenburg Report Availability Pt. Stephens Research Available for viewing and in PDF at: P. O. Box 210307 http://wfrc.usgs.gov Auke Bay, AK 99821 http://far.nbii.gov [email protected] http://www.id.ucsb.edu/lovelab Lyman K. Thorsteinson Printed copies available from: Western Fisheries Research Center Milton Love U. S. Geological Survey Marine Science Institute 6505 NE 65th St. University of California, Santa Barbara Seattle, WA 98115 Santa Barbara, CA 93106 [email protected] (805) 893-2935 June 2005 Lyman Thorsteinson Western Fisheries Research Center Much of the research was performed under a coopera- U. S. Geological Survey tive agreement between the USGS’s Western Fisheries
    [Show full text]