Maththe Economic Impact of Atlantic Menhaden on Virginia's
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Saltwater Fishing Tournament 20
UG Annual Virginia Saltwater Fishing Tournament 20 Virginia Saltwater Fishing Tournament Marine Resources Commission 380 FenwicN Road Fort Monroe, VA 23651 Tel. No. (757) 491- 5160 Fax. No. (757) 247-8014 E-mail: [email protected] 1/20 ELIGIBLE SPECIES AND MINIMUM WEIGHTS FOR CITATIONS Swordfish...................................................................................100 lbs. Tuna, Bluefin............................................................................. 100 lbs. Black Drum ..................................................................................80 lbs. Tuna, Yellowfin or Bigeye........................................................... 70 lbs Cobia ............................................................................................55 lbs. Tuna, True Albacore (Longfin Tuna)...........................................40 lbs. Striped Bass .................................................................................40 lbs. Wahoo ..........................................................................................35 lbs. Golden Tilefish ............................................................................30 lbs Dolphin ........................................................................................25 lbs. King Mackerel .............................................................................20 lbs. Bluefish........................................................................................16 lbs. Sheepshead ...................................................................................10 -
Review of Atlantic Menhaden Ecological Reference Points
Review of Atlantic Menhaden Ecological Reference Points Steve Cadrin July 27 2020 The Science Center for Marine Fisheries (SCeMFiS) requested a technical review of analyses being considered by the Atlantic States Marine Fisheries Commission (ASMFC) to estimate ecological reference points (ERPs) for Atlantic menhaden by applying a multispecies model (SEDAR 2020b). Two memoranda by the ASMFC Ecological Reference Point Work Group and Atlantic Menhaden Technical Committee were reviewed: • Exploration of Additional ERP Scenarios with the NWACS-MICE Tool (April 29 2020) • Recommendations for Use of the NWACS-MICE Tool to Develop Ecological Reference Points and Harvest Strategies for Atlantic Menhaden (July 15 2020) Summary • According to the SEDAR69 Ecological Reference Points report, the multi-species tradeoff analysis suggests that the single-species management target for menhaden performs relatively well for meeting menhaden and striped bass management objectives, and there is little apparent benefit to striped bass or other predators from fishing menhaden at a lower target fishing mortality. • Revised scenarios of the SEDAR69 peer-reviewed model suggest that results are highly sensitive to assumed conditions of other species in the model. For example, reduced fishing on menhaden does not appear to be needed to rebuild striped bass if other stocks are managed at their targets. • The recommendation to derive ecological reference points from a selected scenario that assumes 2017 conditions was based on an alternative model that was not peer reviewed by SEDAR69, and the information provided on alternative analyses is insufficient to determine if it is the best scientific information available to support management decisions. • Considering apparent changes in several stocks in the multispecies model since 2017, ecological reference points should either be based on updated conditions or long-term target conditions. -
Spanish Mackerel (8
BULLETIN OF MARINE SCIENCE, 41(3): 822-834, ]987 LARVAL KING MACKEREL (SCOMBEROMORUS CAVALLA), SPANISH MACKEREL (8. MACULATUS), AND BLUEFISH (POMATOMUS SALTATRIX) OFF THE SOUTHEAST COAST OF THE UNITED STATES, 1973-1980 Mark R. Collins and Bruce W Stender ABSTRACT Surface and subsurface ichthyoplankton collections were made from 9 m to beyond the continental shelf(deepest station 3,940 m) in all seasons from Cape Hatteras, North Carolina to Cape Canaveral, Florida. King mackerel spawn from April to at least September, primarily at depths >40 m. Spring spawning activity takes place further offshore than does summer spawning. An apparent concentration of larvae between 32° and 33°N suggests that the area of upwelling associated with the Charleston bump is an important spawning and/or nursery area. Spanish mackerel spawn from May to September in depths <40 m. Larvae were less abundant than those of king mackerel, and no areas of concentration were found. Vertical migration to the surface at night is indicated for both king and Spanish mackerels. Bluefish spawn bimodally from March through at least November in depths >40 m, with the primary spawning peak in spring and the secondary peak in late summer. In spring, larvae were caught most often between 32° and 33°N, but in summer-fall were taken more often at locations further south. Neither vertical migration or visually-cued net avoidance is indicated, but bluefish >4 mm are strongly associated with the surface. Spanish (Scomberomorus maculatus) and king (S. cavalla) mackerels and blue- fish (Pomatomus saltatrix) support large recreational and commercial fisheries along the east coast of the United States. -
Population Structure and Biology of Shortfin Mako, Isurus Oxyrinchus, in the South-West Indian Ocean
CSIRO PUBLISHING Marine and Freshwater Research http://dx.doi.org/10.1071/MF13341 Population structure and biology of shortfin mako, Isurus oxyrinchus, in the south-west Indian Ocean J. C. GroeneveldA,E, G. Cliff B, S. F. J. DudleyC, A. J. FoulisA, J. SantosD and S. P. WintnerB AOceanographic Research Institute, PO Box 10712, Marine Parade 4056, Durban, South Africa. BKwaZulu-Natal Sharks Board, Private Bag 2, Umhlanga Rocks 4320, South Africa. CFisheries Management, Department of Agriculture, Forestry and Fisheries, Private Bag X2, Rogge Bay 8012, South Africa. DNorwegian College of Fishery Science, University of Tromsø, NO-9037, Tromsø, Norway. ECorresponding author. Email: [email protected] Abstract. The population structure, reproductive biology, age and growth, and diet of shortfin makos caught by pelagic longliners (2005–10) and bather protection nets (1978–2010) in the south-west Indian Ocean were investigated. The mean fork length (FL) of makos measured by observers on longliners targeting tuna, swordfish and sharks was similar, and decreased from east to west, with the smallest individuals occurring near the Agulhas Bank edge, June to November. Nearly all makos caught by longliners were immature, with equal sex ratio. Makos caught by bather protection nets were significantly larger, males were more frequent, and 93% of males and 55% of females were mature. Age was assessed from band counts of sectioned vertebrae, and a von Bertalanffy growth model fitted to sex-pooled length-at-age data predicted a À1 birth size (L0) of 90 cm, maximum FL (LN) of 285 cm and growth coefficient (k) of 0.113 y . -
Marine Fish and Invertebrates: Biology and Harvesting Technology - R
FISHERIES AND AQUACULTURE – Vol. II - Marine Fish and Invertebrates: Biology and Harvesting Technology - R. Radtke MARINE FISH AND INVERTEBRATES: BIOLOGY AND HARVESTING TECHNOLOGY R. Radtke University of Hawai’i at Manoa, Hawai’i Institute of Geophysics and Planetology, Honolulu, USA Keywords: fisheries, trophic, harvesting, fecundity, management, species, equilibrium yield, biomass, stocks, otoliths, calcified tissues, teleost fishes, somatic growth, population, recruitment, mortality, population, cation and anion densities, genotype, acoustic biomass estimation, aquaculture, ecosystems, anthropogenic, ecological, diadromous species, hydrography, Phytoplankton, finfish, pelagic, demersal, exogenous, trophic, purse seines, semidemersal, gadoid, morphometrics, fecundity, calanoid, copepods, euphausiids, caudal fin, neritic species, epibenthic, epipelagic layers, thermocline, nacre, benthepelagic, discards, pots. Contents 1. Introduction 2. New Approaches 3. Biology and Harvesting of Major Species 3.1. Schooling Finfish (Cods, Herrings, Sardines, Mackerels, and others) 3.2. Tunas, Billfish and Sharks 3.3. Shrimp and Krill 3.4. Crabs and Lobsters 3.5. Shelled Molluscs (Clams, Oysters, Scallops, Pearl Oysters, and Abalone) 3.6. Cephalopods: Octopus and Squid 3.7. Orange Roughy and Other Benthic Finfish 3.8. Flatfishes and Skates 4. Marine Plants: Production and Utilization 5. Commercial Sea-Cucumbers and Trepang Markets 6. Importance of Non-Commercial Fish 7. The Problem of Discards in Fisheries 8. Fisheries Engineering and Technology: Fishing Operation and Economic Considerations 9. Subsistence Hunting of Marine Mammals GlossaryUNESCO – EOLSS Bibliography Biographical Sketch SAMPLE CHAPTERS Summary The technology to understand and harvest fishery resources has expanded markedly in recent times. This expansion in information has allowed the harvesting of new species and stocks. Information is important to preservation and responsible harvesting. For managers and project organizers alike, knowledge is the cornerstone to successful fishery resource utilization. -
Menhadentexasfull.Pdf Ocean Associates, Incorporated Oceans and Fisheries Consulting
Ocean Associates, Inc. Ocean Associates, Inc. Phone: 703-534-4032 4007 N. Abingdon Street Fax: 815-346-2574 Arlington, Virginia USA 22207 Email: [email protected] http://www.OceanAssoc.com March 24, 2008 Toby M. Gascon Director of Government Affairs Omega Protein, Inc. Ref: Gulf of Mexico Menhaden: Considerations for Resource Management Dear Mr. Gascon, In response to your Request for Scientific Analysis regarding proposed regulations for menhaden fishing in Texas waters, herewith is our response to your questions. We have formatted it as a report. It includes a Preface, which sets the stage, an Executive Summary without citations, and a response to each of the questions with supporting citations. We have enclosed a copy of the paper (Condrey 1994) we believe was used by TPWD in drafting the proposed regulations. It has the appropriate underlying numbers and is the only study with sufficient detail to be used for the type of analysis attempted by TPWD. We appreciate the opportunity to provide this analysis. It came at an opportune time. I have been developing the ecosystem material included in this document for many years, ever since the basic theory was proposed to me by a Russian colleague who went on to become the Soviet Minister of Fisheries. As Chief of the NMFS Research Division, I read countless documents regarding fisheries research and management, and attended many conferences and program reviews, slowly gaining the knowledge reflected in this report. The flurry of menhaden writings and government actions gave me impetus to complete the work, and your request accelerated it further. I expect the ecosystem materials in this present report will soon be part of a more- detailed formal scientific paper documenting the role of menhaden in coastal ecology. -
The Diet of Chesapeake Bay Ospreys and Their Impact on the Local Fishery
]. RaptorRes. 25(4):109-112 ¸ 1991 The Raptor ResearchFoundation, Inc. THE DIET OF CHESAPEAKE BAY OSPREYS AND THEIR IMPACT ON THE LOCAL FISHERY PETER K. MCLEAN • AND MITCHELL A. BYRD Departmentof Biology,College of William and Mary, Williamsburg,VA 23785 ABSTRACT.--Ospreys(Pan dion haliaetus), were observedat sevennests located in southwesternChesapeake Bay, for 642 hr between21 May and 25 July 1985. On average5.4 fish/day were deliveredto the nests. The size of fish deliveredranged from 4 to 43 cm, and the mean weight of fish deliveredwas 156.9 g. Atlantic Menhaden (Brevortiatyrannus) accounted for nearly 75% of the diet, although White Perch (Motone americana),Atlantic Croaker (Micropogoniasundulatus), Oyster Toadfish (Opsanustau), and American Eel (Anguilla rostrata)also were commonprey. ChesapeakeBay Ospreys,estimated at 3000 breedingpairs, would be expectedto eat about 132 171 kg of fish during the 52-day nestlingperiod. This "harvest"represents 0.004% of the annual ChesapeakeBay commercialharvest and likely has a minimal impact on the local fishery. La dietade fixguila Pescadora (Pan dion haliaetus) en la BahiaChesapeake y su impacto en la pescalocal EXTR^CTO.--fixguilasPescadoras (Pandion haliaetus) en sietenidos ubicados en la zonasudoeste de la Bahia Chesapeake,fueron observadas por 642 horasentre el 21 de mayo y el 25 de julio de 1985. Un promediode 5.4 pesces/diafueron 11evadosa cada nido. E1 tamafio del pescadoque rue 11evadoal nido oscil6entre 4 y 43 cm, y el pesomedio fue de 156.9 g. Los pecesde la especieBrevortia tyrannus constituyeroncerca del 75% de la dieta,aunque peces de las especiesMorone americana, Microp.ogonias undulatus,Opsanus tau, Anguilla rostrata tambign fueron presa comfin. -
Download the Report
February 2006 WHAT’S ON THE HOOK? MERCURY LEVELS AND FISH CONSUMPTION SURVEYED AT A GULF OF MEXICO FISHING RODEO Kimberly Warner Jacqueline Savitz ACKNOWLEDGEMENTS: We wish to thank the organizers of the 73rd Annual Deep Sea Fishing Rodeo, particularly Pat Troup, Mike Thomas, and the anglers, the National Seafood Inspection Lab, the Dauphin Island Sea Lab, and the invaluable assistance of Dr. Bob Shipp, Dr. Sean Powers, Melissa Powers, the hard working DISL graduate students and Oceana staff, including Gib Brogan, Phil Kline, Mike Hirshfield, Suzanne Garrett, Bianca Delille, Sam Haswell, Heather Ryan and Dawn Winalski. TABLE OF CONTENTS: 4 Executive Summary 5 Major Findings 6 Recommendations 8 Introduction 10 Results 10 Mercury Levels 14 Fish Consumption 16 Fish Consumption and Mercury Levels 18 Recommendations 19 Methods 20 Appendices 20 Table A1 Raw Mercury Data 25 Table A2 Gulf Comparisons 30 Table A3 US EPA Risk-based Consumption Guideline 31 Endnotes EXECUTIVE SUMMARY: In the past few years, seafood lovers have become increasingly concerned about mercury levels in Gulf of Mexico fish. Unfortunately, anglers have not had the in- formation they need to help them decide which fish may be safer to eat, despite the fact that recreational anglers and their families typically eat more fish than the average population. In fact, recent studies have found that people who live in coastal areas of the United States have higher levels of mercury in their blood than residents from inland areas.1 The purpose of this report is to help provide infor- mation to recreational anglers in the Gulf of Mexico on which fish may be higher in mercury than others, which would be safer to eat, and which species are in need of further monitoring. -
A Recommendation to Amend the Atlantic Menhaden Fishery
A Recommendation to Amend the Atlantic Menhaden Fishery Management Plan To Protect and Preserve Menhaden's Ecological Role in Chesapeake Bay and Throughout its Range Presented to the Atlantic States Marine Fisheries Commission December 17,2003 by the National Coalition for Marine Conservation Leesburg, Virginia "In the long run, I look forward to the day when fishery conservation and management are carried out with full knowledge of the interactions between the managed species and the living and nonliving components of their environment. I believe we are making steady progress toward the goal of an ecosystem approach to management. "In recent years, we have begun to move away from single species concepts of management, like maximum sustainable yield, and toward the multispecies concept of optimum yield. Optimum yield encourages the consideration of ecological factors in devising management strategies, as well as economic and social factors. Within a few years, I expect that most fishery management plans prepared by the Regional Fishery Management Councils will be multispecies plans, which will take into account predator-prey relationships in particular. Not too long after that, I hope we will use an ecosystem approach to fishery management." This statement was part of the keynote remarks by then-NOAA Administrator Richard Frank at a Striped Bass Symposium sponsored by the National Coalition for Marine Conservation in March 1980. In spite of Dr. Frank's optimism, we've only begun to take the first tentative steps toward an ecosystem approach to managing marine fisheries during the last several years, primarily due to the recommendations of the 1999 Report to Congress of the Ecosystems Principles Advisory Panel. -
Shortfin Mako (Isurus Oxyrinchus) Is One of Two Species in the Genus Isurus
COSEWIC Assessment and Status Report on the Shortfin Mako Isurus oxyrinchus Atlantic population in Canada THREATENED 2006 COSEWIC COSEPAC COMMITTEE ON THE STATUS OF COMITÉ SUR LA SITUATION ENDANGERED WILDLIFE DES ESPÈCES EN PÉRIL IN CANADA AU CANADA COSEWIC status reports are working documents used in assigning the status of wildlife species suspected of being at risk. This report may be cited as follows: COSEWIC 2006. COSEWIC assessment and status report on the shortfin mako Isurus oxyrinchus (Atlantic population) in Canada. Committee on the Status of Endangered Wildlife in Canada. Ottawa. vi + 24 pp. (www.sararegistry.gc.ca/status/status_e.cfm). Production note: COSEWIC would like to acknowledge Scott Wallace, Steven Campana, Gordon (Sandy) McFarlane and Jacquelynne King for writing the status report on the shortfin mako (Atlantic population) Isurus oxyrinchus in Canada, prepared under contract with Environment Canada. This report was overseen and edited by Mart Gross and Howard Powles (co-chairs, Marine Fishes Specialist Subcommittee) and Robin Waples (member, Marine Fishes Specialist Subcommittee). For additional copies contact: COSEWIC Secretariat c/o Canadian Wildlife Service Environment Canada Ottawa, ON K1A 0H3 Tel.: (819) 997-4991 / (819) 953-3215 Fax: (819) 994-3684 E-mail: COSEWIC/[email protected] http://www.cosewic.gc.ca Également disponible en français sous le titre Évaluation et Rapport de situation du COSEPAC sur le requin - taupe bleu (Isurus oxyrinchus) population de l’Atlantique, au Canada. Cover illustration: Shortfin -
Missing Menhaden
MISSING MENHADEN How the decline of one small fish threatens the marine food web ften known as “the most important fish in the sea,” Atlantic menhaden play a vital role in the marine ecosystem from Maine to Florida. These Bottlenose Bluefish O dolphin fish, which barely reach a foot long, are a critical food source for birds, mammals, and valuable fish species. Yet their number has plummeted to a record low. Billions of Atlantic menhaden have been hauled in and ground up, removed from their ecosystem mostly to be used in fertilizer, pet food, dietary supplements, and 10% Proportion of menhaden that remain feed for farm-raised fish, from historic levels chicken, and pigs. Humpback whale Tern The shortage is taking a toll on the many wild Osprey Harbor seal animals and fish that eat menhaden, threatening OCEAN FOOD SHORTAGE the entire Atlantic Menhaden feed many animals, including popular marine food web and the and valuable game fish. The menhaden commercial and sport decline is already taking a toll on the diets of some marine life. fishing industries that depend on a healthy ocean. In the 1980s, lower Chesapeake Bay osprey diets were 75% menhaden by weight; in 2009, the number of menhaden making up the osprey diet had declined to 24%. Weakfish Striped bass Analysis of the abundance of menhaden relative to its predator, striped bass, shows far fewer menhaden in the water for a given bass to eat today than in the early 1980s – less than 10% as many prey per predator. Osprey photo: Gallo Images; other photos this page: WikiMedia Commons MENHADEN’S PLIGHT l Populations have plummeted 88 percent during the past 25 years. -
Inshore Fish Survey Report 2013
THE DELAWARE CENTER FOR THE INLAND BAYS INSHORE FISH AND BLUE CRAB SURVEY OF REHOBOTH BAY, INDIAN RIVER AND BAY, AND LITTLE ASSAWOMAN BAY FOR 2013 RONNIE J. KERNEHAN, C. LYNN LAMBERTSON, MITCHELL C. MASSER, DEANNA C. PECK, ROY W. MILLER, DENNIS H. BARTOW, and ANDREW MCGOWAN Delaware Center for the Inland Bays 39375 Inlet Rd, Rehoboth Beach, DE 19971 May 2016 Report may be accessed via www.inlandbays.org © BY Delaware Center for the Inland Bays 2016 All Rights Reserved Citation Format Kernehan, R.J., C.L. Lambertson, M. C. Masser, D.C. Peck, R. W. Miller, D.H. Bartow, and A.T. McGowan. 2016. 2013 Inshore fish and blue crab survey of Rehoboth Bay, Indian River and Bay, and Little Assawoman Bay. Delaware Center for the Inland Bays. Rehoboth Beach, DE. 34pp. Cover Illustration: Blackcheek Tonguefish, Symphurus plagiusa by Val Kells © 2014. Val Kells, Marine Science Illustration, www.valkellsillustration.com The Delaware Center for the Inland Bays is a non-profit organization and a National Estuary Program. It was created to promote the wise use and enhancement of the Inland Bays watershed by conducting public outreach and education, developing and implementing restoration projects, encouraging scientific inquiry and sponsoring needed research, and establishing a long-term process for the protection and preservation of the Inland Bays watershed. ii TABLE OF CONTENTS Table of Contents……………………………………………………………….……….…....… iii Abstract……………………………………………………………………………………….…... 1 Introduction…….………………………………….………………………………….…….……. 1 Methods and Materials………………………………………………………………….………. 2 Results……………………………………………………………...………………………….….. 3 Overall Catch……………………………………………………………………….…… 3 Catch by System…………………………………………………………………….….. 4 Rehoboth Bay…………………………………………………………….…… 4 Indian River Bay………………………………………………………….……. 4 Little Assawoman Bay………………………………………………………… 5 Discussion………………………………………………………….…………………………....... 6 Results and Discussion: Target Species……………………………………………………….