Guide to Identifying Salmon and Char in the Arctic
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The Arctic Char (Salvelinus Alpinus) “Complex” in North America Revisited
The Arctic char (Salvelinus alpinus) “complex” in North America revisited Eric B. Taylor Hydrobiologia The International Journal of Aquatic Sciences ISSN 0018-8158 Hydrobiologia DOI 10.1007/s10750-015-2613-6 1 23 Author's personal copy Hydrobiologia DOI 10.1007/s10750-015-2613-6 CHARR II Review Paper The Arctic char (Salvelinus alpinus) ‘‘complex’’ in North America revisited Eric B. Taylor Received: 1 July 2015 / Revised: 16 November 2015 / Accepted: 5 December 2015 Ó Springer International Publishing Switzerland 2015 Abstract The Arctic char (Salvelinus alpinus) law. This research has significantly revised what species ‘‘complex’’ has fascinated biologists for constitutes the S. alpinus species ‘‘complex’’, provided decades particularly with respect to how many species insights into the ecology and genetics of co-existence, there are and their geographic distributions. I review and promoted conservation assessment that better recent research on the species complex, focussing on represents biodiversity within Salvelinus. A geograph- biodiversity within northwestern North America, ically and genetically comprehensive analysis of which indicates (i) what was once considered a single relationships among putative taxa of Pan-Pacific taxon consists of three taxa: S. alpinus (Arctic char), S. Salvelinus is still required to better quantify the malma (Dolly Varden), and S. confluentus (bull trout), number of taxa and their origins. (ii) morphological and genetic data indicate that S. alpinus and S. malma, and S. malma and S. confluentus Keywords Dolly Varden Á Arctic char Á Bull trout Á exist as distinct biological species in sympatry, (iii) Geographic distribution Á Taxonomy Á Conservation sympatric forms of S. alpinus exist in Alaska as in other areas of the Holarctic, (iv) Dolly Varden comprises two well-differentiated subspecies, S. -
Do Some Atlantic Bluefin Tuna Skip Spawning?
SCRS/2006/088 Col. Vol. Sci. Pap. ICCAT, 60(4): 1141-1153 (2007) DO SOME ATLANTIC BLUEFIN TUNA SKIP SPAWNING? David H. Secor1 SUMMARY During the spawning season for Atlantic bluefin tuna, some adults occur outside known spawning centers, suggesting either unknown spawning regions, or fundamental errors in our current understanding of bluefin tuna reproductive schedules. Based upon recent scientific perspectives, skipped spawning (delayed maturation and non-annual spawning) is possibly prevalent in moderately long-lived marine species like bluefin tuna. In principle, skipped spawning represents a trade-off between current and future reproduction. By foregoing reproduction, an individual can incur survival and growth benefits that accrue in deferred reproduction. Across a range of species, skipped reproduction was positively correlated with longevity, but for non-sturgeon species, adults spawned at intervals at least once every two years. A range of types of skipped spawning (constant, younger, older, event skipping; and delays in first maturation) was modeled for the western Atlantic bluefin tuna population to test for their effects on the egg-production-per-recruit biological reference point (stipulated at 20% and 40%). With the exception of extreme delays in maturation, skipped spawning had relatively small effect in depressing fishing mortality (F) threshold values. This was particularly true in comparison to scenarios of a juvenile fishery (ages 4-7), which substantially depressed threshold F values. Indeed, recent F estimates for 1990-2002 western Atlantic bluefin tuna stock assessments were in excess of threshold F values when juvenile size classes were exploited. If western bluefin tuna are currently maturing at an older age than is currently assessed (i.e., 10 v. -
Choose Your Fish Brochure
outside: panel 1 (MDH North Shore) outside: panel 2 (MDH North Shore) outside: panel 3 (MDH North Shore) outside: panel 4 (MDH North Shore–back cover) outside: panel 5 (MDH North Shore–front cover) 4444444444444444444444444444444444444444444444444444444444444444444444444 4444444444444444444444444444444444444444444444444444444444444444444444444 Parmesan Salmon 4444444444444444444444444444444 Fish to Avoid Bought or Try this easy, tasty recipe for serving up a good source of omega-3s. Salmon has a rich, buttery taste and Mercury levels are too high Caught Think: species, tender, large flakes. Serve with brown rice and a mixed Do not eat the following fish if you are pregnant or green salad for up to 4 people. CHOOSE may become pregnant, or are under 15 years old: size and source YOUR What you need 1 pound salmon fillet (not steak) • Lake Superior Lake Trout How much mercury is in 2 tablespoons grated Parmesan cheese (longer than 39 inches) fish depends on the: • Lake Superior Siscowet Lake Trout 1 tablespoon horseradish, drained (longer than 29 inches) 1/3 cup plain nonfat yogurt • Species. Some fish have 1 tablespoon Dijon mustard • Muskellunge (Muskie) more mercury than others 1 tablespoon lemon juice • Shark because of what they eat and How to prepare • Swordfish how long they live. 1. Arrange the fillet, skin side down, on foil-covered broiler pan. Raw and smoked fish may cause illness • Size. Smaller fish generally have less FISHFISHFISH 2. Combine remaining ingredients and spread over fillet. If you are or might be pregnant: mercury than larger, older fish of the 3. Bake at 450°F or broil on high for 10 to 15 minutes, same species. -
A Preliminary Study on the Stomach Content of Southern Bluefin Tuna Thunnus Maccoyii Caught by Taiwanese Longliner in the Central Indian Ocean
CCSBT-ESC/0509/35 A preliminary study on the stomach content of southern bluefin tuna Thunnus maccoyii caught by Taiwanese longliner in the central Indian Ocean Kwang-Ming Liu1, Wei-Ke Chen2, Shoou-Jeng Joung2, and Sui-Kai Chang3 1. Institute of Marine Resource Management, National Taiwan Ocean University, Keelung, Taiwan. 2. Department of Environmental Biology and Fisheries Science, National Taiwan Ocean University, Keelung, Taiwan. 3. Fisheries Agency, Council of Agriculture, Taipei, Taiwan. Abstract The stomach contents of 63 southern bluefin tuna captured by Taiwanese longliners in central Indian Ocean in August 2004 were examined. The size of tunas ranged from 84-187 cm FL (12-115 kg GG). The length and weight frequency distributions indicated that most specimens were in the range of 100-130 cm FL with a body weight between 10 and 30 kg for both sexes. The sexes- combined relationship between dressed weight and fork length can be described by W = 6.975× 10-6× FL3.1765 (n=56, r2=0.967, p < 0.05). The subjective index of fullness of specimens was estimated as: 1 = empty (38.6%), 2 = <half full (47.37%), 3 = half full (3.51%), 4 = >half full (5.26%), and 5 = full (5.26%). For the stomachs with prey items, almost all the preys are pisces and the proportion of each prey groups are fishes (95.6%), cephalopods (2.05%), and crustaceans (0.02%). In total, 6 prey taxa were identified – 4 species of fish, 1 unidentified pisces, 1 unidentified crustacean, and 1 unidentified squid. The 4 fish species fall in the family of Carangidae, Clupeidae, Emmelichthyidae, and Hemiramphidae. -
Chinook Salmon Oncorhynchus Tsha Wytscha from Experimentally-Induced Proliferative Kidney Disease
DISEASES OF AQUATIC ORGANISMS Vol. 4: 165-168, 1988 Published July 27 Dis. aquat. Org. I Oral administration of Fumagillin DCH protects chinook salmon Oncorhynchus tsha wytscha from experimentally-induced proliferative kidney disease R. P. Hedrick*,J. M. Groff, P. Foley, T. McDowell Aquaculture and Fisheries Program, Department of Medicine, School of Veterinary Medicine, University of California, Davis, California 95616, USA ABSTRACT: The antibiotic Fumagillin DCH was found to be effective in controlling experimental infections with PKX, the myxosporean that causes proliferative kidney disease (PKD) in salmonid fish. Following 6 or 7 wk of treatment, experimentally infected chinook salmon Oncorhynchus tshawytscha showed no evidence of PKX cells, or of the renal inflammation characteristic of PKD, on withdrawal of the treatment and tor up to 7 wk afterwards. In contrast, 90 to 100 % of fish (in 2 experiments) that were injected with PKX, but not glven the antibiotic, had numerous PKX cells in the kidney and developed clinical PKD. This is the first report of an effective orally administered drug for the control of a myxozoan infection in salmonid fish. INTRODUCTION Clifton-Hadley & Alderman (1987) found that periodic bath treatments with malachite green effectively Proliferative kidney disease (PKD) is considered to reduced the severity and prevalence of PKD in rainbow be one of the most serious diseases of farm-reared trout trout. In the study, malachite green was found to be in Europe and also causes major losses among Pacific concentrated in certain tissues of the rainbow trout and salmon in North America (Clifton-Hadley et al. 1984, this in combination with the teratogenic and car- Hedrick et al. -
Stevens Point Northern Aquaculture Demonstration Facility
University of Wisconsin- Stevens Point Northern Aquaculture Demonstration Facility • Greg Fischer • Facilities Operation Manager New Species for Wisconsin Aquaculture • Arctic Char?? WHY ARCTIC CHAR • Coldwater Species • Rapid growth – 1 kg(2.2 lbs) <17months • High quality flesh • Good market price with limited availability • High culture densities-120kg/m³(1.0lb/gal) • High fillet yield 50% + @market size 1-3 kg (2.2-6.6lbs) Comparsion between Arctic Char, Rainbow Trout, and Brook Trout in Weig ht Over Time from 20 g rams 900 800 700 600 AC -10 500 B K T-06 gms 400 R B T-08 300 200 100 0 0 30 60 90 120 150 180 210 240 270 300 330 360 390 Days of growth Days from 20 gms to 1.0 pd AC -10 R B T- 08 B K T-06 0 50 100 150 200 250 S eries2 Evaluation of photoperiod manipulation on Arctic Char growth, processing attributes, and sexual maturity in a coldwater recirculating system at UWSP-NADF Materials and Methods . The purpose of this study was to evaluate and compare arctic charr production attributes reared under two different photoperiods (24 hr and natural) in an RAS system. Troutlodge Inc. provided Nauyuk Lake (Canada) strain arctic charr eggs. Cultured 17 months from egg to market size (1.0 kg) (2.0 lbs) . Reared 10 months in RAS system . Project was conducted inside main aquatic barn at NADF. Materials and Methods Egg and Fry Culture . Eyed eggs incubated in Heath Stack .Flow thru 8.0°C(48F) degassed & aerated ground water. Fry were transferred to shallow (406 mm x 1219 mm) flow-thru fiberglass tank inserts. -
Reindeer Grazing Permits on the Seward Peninsula
U.S. Department of the Interior Bureau of Land Management Anchorage Field Office 4700 BLM Road Anchorage, Alaska 99507 http://www.blm.gov/ak/st/en/fo/ado.html Environmental Assessment: DOI-BLM-AK-010-2009-0007-EA Reindeer Grazing Permits on the Seward Peninsula Applicant: Clark Davis Case File No.: F-035186 Applicant: Fred Goodhope Case File No.: F-030183 Applicant: Thomas Gray Case File No.: FF-024210 Applicant: Nathan Hadley Case File No.: FF-085605 Applicant: Merlin Henry Case File No.: F-030387 Applicant: Harry Karmun Case File No. : F-030432 Applicant: Julia Lee Case File No.: F-030165 Applicant: Roger Menadelook Case File No.: FF-085288 Applicant: James Noyakuk Case File No.: FF-019442 Applicant: Leonard Olanna Case File No.: FF-011729 Applicant: Faye Ongtowasruk Case File No.: FF-000898 Applicant: Palmer Sagoonick Case File No.: FF-000839 Applicant: Douglas Sheldon Case File No.: FF-085604 Applicant: John A. Walker Case File No.: FF-087313 Applicant: Clifford Weyiouanna Case File No.: FF-011516 Location: Bureau of Land Management lands on the Seward Peninsula Prepared By: BLM, Anchorage Field Office, Resources Branch December 2008 DECISION RECORD and FINDING OF NO SIGNIFICANT IMPACT I. Decision: It is my decision to issue ten-year grazing permits on Bureau of Land Management lands to reindeer herders on the Seward and Baldwin peninsulas, Alaska. The permits shall be subject to the terms and conditions set forth in Alternative B of the attached Reindeer Grazing Programmatic Environmental Assessment. II. Rationale for the Decision: The Reindeer Industry Act of 1937, 500 Stat. 900, authorizes the Secretary’s regulation of reindeer grazing on Federal public lands on the peninsulas. -
Reindeer and Caribou: Herds and Livelihoods in Transition
The Greenland experience 6 MAGAZINE Wek'eezhii herd management 11 No. 1 Windmill power: green energy or 2011 The CirCle trampling traditional lifestyles? 19 reindeer and Caribou: herds and livelihoods in TransiTion PUBLISHED BY THE WWF GLoBaL aRCTIC PRoGRaMME The Circle 1.2011 Contents EDITORIAL MOnte HummeL Caribou: The Experience 3 In BRIEF 4 Jeff Kerby Global warming: Timing is everything 6 AnnE Gunn Fighting inertia to conserve caribou herds 8 Jody SnortlanD, Karin ClarK Balancing Expectations: The Wek’èezhìi example of herd management 11 Leonid Baskin, Tobias Kuemmerle, Volker C. Radeloff Protecting wild reindeer in Siberia 13 BRuce Forbes A lesson in global warming and gas exploitation 15 WIndmills V.S Sámi comMunities – Green colOnialism? 19–22 Lars-Anders Baer Windmill colonialism: A threat to Arctic Indigenous people 20 JOnas Lundmark Wind power – Europe’s shining star? 21 Niklas Labba Muohta with the threat of climate change 22 Philip Burgess Long distance learning 25 THE PICTuRE 28 What (herders) find harder to handle, and have little leverage to influence, is the progressive loss of traditional territories and resources they need to survive – grazing lands, campsites, sacred sites, fresh- water fish – to rapidly advancing gas development. “ Dr. Bruce Forbes, article page 15 ranGifers Photo: Jeff Kerby Photo: Jeff The Circle is published quarterly by Publisher: Editor in Chief: Clive Tesar, [email protected] CoVER: the WWF Global arctic Programme. WWF Global arctic Programme, Editor: Becky Rynor, [email protected] a young Nenets boy leads his Reproduction and quotation with appro- 30 Metcalfe Street reindeer team across the new priate credit are encouraged. -
Federal Register/Vol. 85, No. 123/Thursday, June 25, 2020/Rules
Federal Register / Vol. 85, No. 123 / Thursday, June 25, 2020 / Rules and Regulations 38093 that make the area biologically unique. and contrary to the public interest to DEPARTMENT OF COMMERCE It provides important juvenile swordfish provide prior notice of, and an habitat, and is essentially a narrow opportunity for public comment on, this National Oceanic and Atmospheric migratory corridor containing high action for the following reasons: Administration concentrations of swordfish located in Based on recent data for the first semi- close proximity to high concentrations 50 CFR Part 679 annual quota period, NMFS has of people who may fish for them. Public [Docket No. 200604–0152] comment on Amendment 8, including determined that landings have been from the Florida Fish and Wildlife very low through April 30, 2020 (21.9 RIN 0648–BJ35 Conservation Commission, indicated percent of 1,318.8 mt dw quota). concern about the resultant high Adjustment of the retention limits needs Fisheries of the Exclusive Economic potential for the improper rapid growth to be effective on July 1, 2020; otherwise Zone Off Alaska; Modifying Seasonal of a commercial fishery, increased lower, default retention limits will Allocations of Pollock and Pacific Cod catches of undersized swordfish, the apply. Delaying this action for prior for Trawl Catcher Vessels in the potential for larger numbers of notice and public comment would Central and Western Gulf of Alaska fishermen in the area, and the potential unnecessarily limit opportunities to AGENCY: National Marine Fisheries for crowding of fishermen, which could harvest available directed swordfish Service (NMFS), National Oceanic and lead to gear and user conflicts. -
Monitoring Endangered Atlantic Sturgeon and Commercial Finfish Habitat Use in the New York Lease Area
OCS Study BOEM 2019-074 Monitoring Endangered Atlantic Sturgeon and Commercial Finfish Habitat Use in the New York Lease Area US Department of the Interior Bureau of Ocean Energy Management Office of Renewable Energy Programs OCS Study BOEM 2019-074 Monitoring Endangered Atlantic Sturgeon and Commercial Finfish Habitat Use in the New York Lease Area June 2019 Authors: Michael G. Frisk, Professor School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, New York 11794. Evan C. Ingram, Graduate Student School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, New York 11794. Keith Dunton, Assistant Professor Department of Biology, Monmouth University, 400 Cedar Avenue, West Long Branch, New Jersey 07764. Prepared under Cooperative Agreement M16AC00003 US Department of the Interior Bureau of Ocean Energy Management Office of Renewable Energy Programs DISCLAIMER Study collaboration and funding were provided by the US Department of the Interior, Bureau of Ocean Energy Management (BOEM), Environmental Studies Program, Washington, DC, under Agreement Number M16AC00003. This report has been technically reviewed by BOEM, and it has been approved for publication. The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the opinions or policies of the US Government, nor does mention of trade names or commercial products constitute endorsement or recommendation for use. This project was funded by both BOEM and the New York State Department of Environmental Conservation (NYSDEC). REPORT AVAILABILITY To download a PDF file of this report, go to the US Department of the Interior, Bureau of Ocean Energy Management Data and Information Systems webpage (http://www.boem.gov/Environmental-Studies- EnvData/), click on the link for the Environmental Studies Program Information System (ESPIS), and search on 2019-074. -
Stillaguamish Watershed Chinook Salmon Recovery Plan
Stillaguamish Watershed Chinook Salmon Recovery Plan Prepared by: Stillaguamish Implementation Review Committee (SIRC) June 2005 Recommended Citation: Stillaguamish Implementation Review Committee (SIRC). 2005. Stillaguamish Watershed Chinook Salmon Recovery Plan. Published by Snohomish County Department of Public Works, Surface Water Management Division. Everett, WA. Front Cover Photos (foreground to background): 1. Fish passage project site visit by SIRC (Sean Edwards, Snohomish County SWM) 2. Riparian planting volunteers (Ann Boyce, Stilly-Snohomish Fisheries Enhancement Task Force) 3. Boulder Creek (Ted Parker, Snohomish County SWM) 4. Stillaguamish River Estuary (Washington State Department of Ecology) 5. Background – Higgins Ridge from Hazel Hole on North Fork Stillaguamish River (Snohomish County SWM) Stillaguamish Watershed Chinook Salmon Recovery Plan ii June 2005 Stillaguamish Watershed Chinook Salmon Recovery Plan Table of Contents 1. INTRODUCTION ................................................................................................... 1 Purpose .................................................................................................................................1 SIRC Mission and Objectives ..............................................................................................1 Relationship to Shared Strategy and Central Puget Sound ESU Efforts .............................2 Stillaguamish River Watershed Overview ...........................................................................3 Salmonid -
Review of Potential Impacts of Atlantic Salmon Culture on Puget Sound Chinook Salmon and Hood Canal Summer-Run Chum Salmon Evolutionarily Significant Units
NOAA Technical Memorandum NMFS-NWFSC-53 Review of Potential Impacts of Atlantic Salmon Culture on Puget Sound Chinook Salmon and Hood Canal Summer-Run Chum Salmon Evolutionarily Significant Units June 2002 U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Marine Fisheries Service NOAA Technical Memorandum NMFS Series The Northwest Fisheries Science Center of the Na tional Marine Fisheries Service, NOAA, uses the NOAA Technical Memorandum NMFS series to issue informal scientific and technical publications when complete formal review and editorial processing are not appropriate or feasible due to time constraints. Documents published in this series may be referenced in the scientific and technical literature. The NMFS-NWFSC Technical Memorandum series of the Northwest Fisheries Science Center continues the NMFS-F/NWC series established in 1970 by the Northwest & Alaska Fisheries Science Center, which has since been split into the Northwest Fisheries Science Center and the Alaska Fisheries Science Center. The NMFS-AFSC Technical Memorandum series is now being used by the Alaska Fisheries Science Center. Reference throughout this document to trade names does not imply endorsement by the National Marine Fisheries Service, NOAA. This document should be cited as follows: Waknitz, F.W., T.J. Tynan, C.E. Nash, R.N. Iwamoto, and L.G. Rutter. 2002. Review of potential impacts of Atlantic salmon culture on Puget Sound chinook salmon and Hood Canal summer-run chum salmon evolutionarily significant units. U.S. Dept. Commer., NOAA Tech. Memo. NMFS-NWFSC-53, 83 p. NOAA Technical Memorandum NMFS-NWFSC-53 Review of Potential Impacts of Atlantic Salmon Culture on Puget Sound Chinook Salmon and Hood Canal Summer-Run Chum Salmon Evolutionarily Significant Units F.