DOCSLIB.ORG

Report of the Technical Subcommittee

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Report of the Technical Subcommittee Report of the Technical Subcommittee of the Canada-United States Groundfish Committee Forty Seventh Annual Meeting of the TSC May 2-3, 2006 Inn at Otter Crest Otter Rock, Oregon Appointed by the Second Conference on Coordination of Fisheries Regulations between Canada and the United States Compiled by the Pacific States Marine Fisheries Commission History of TSC meeting locations, hosts, and chairpersons. YEAR DATES LOCATION HOST CHAIR 1969 June 17-19 Seattle, WA Kauffman Forrester 1970 July 22-24 San Francisco, CA Jow Forrester 1971 Late June Vancouver, BC Forrester Meehan 1972 June 28-30 Newport, OR Meehan Meehan 1973 June 20-22 Seattle, WA Dark Humphreys 1974 June 19-21 Millbrae, CA Jow Forrester 1975 June 25-27 Vancouver, BC Forrester DiDonato 1976 June 23-25 Newport, OR Robinson DiDonato 1977 June 15-16 Seattle, WA Dark Leaman 1978 June 14-15 Menlo Park, CA Jow Westrheim 1979 June 20-21 Parksville, BC Beamish Dark 1980 June 18-20 Petersburg, AK Rigby Dark 1981 June 10-11 Bend, OR Demory Cass 1982 June 9-10 Port Ludlow, WA Pederson Cass 1983 June 15-17 Palo Alto, CA Jow Rigby 1984 June 20-22 British Columbia Westrheim Rigby 1985 June 25-27 Juneau, AK Morrison Westrheim 1986 June 19-19 Ashland, OR Demory Westrheim 1987 June 9-11 Seattle, WA Jagielo Demory 1988 June 7-9 Carmel, CA Henry Demory 1989 June 6-9 Ladysmith, BC Saunders Jagielo 1990 June 5-7 Sitka, AK Bracken Jagielo 1991 June 4-6 Newport, OR Barss Wilkins 1992 May 5-7 Seattle, WA Jagielo Wilkins 1993 May 5-7 Point Lobos, CA Thomas Saunders 1994 May 3-5 Nanaimo, BC Saunders Saunders 1995 May 2-3 Seattle, WA O’Connell Bracken 1996 May 7-9 Newport, OR Barss O’Connell 1997 May 6-8 Tiburon, CA Thomas Barss 1998 May 5-7 Olympia, WA Jagielo Barss 1999 May 4-6 Seattle, WA Methot Barnes 2000 May 9-10 Nanaimo, BC Saunders Barnes 2001 May 8-10 Newport, OR Schmitt Schmitt 2002 May 7-8 Point Lobos, CA Barnes Methot 2003 May 6-7 Sitka, AK O’Connell Jagielo 2004 May 4-5 Coupeville, WA Wilkins Jagielo 2005 May 3-4 Parksville, BC Stanley Stanley 2006 May 2-3 Otter Rock, OR Parker Stanley i REPORT OF THE TECHNICAL SUBCOMMITTEE OF THE CANADA-UNITED STATES GROUNDFISH COMMITTEE Table of Contents HISTORY OF TSC MEETING LOCATION ........................................................................... Inside ....................................................................................................................................................................... Front ....................................................................................................................................................................... Cover A. OVERVIEW AND TERMS OF REFERENCE......................................................................1 B. EXECUTIVE SUMMARY .......................................................................................................3 C. MINUTES OF THE TECHNICAL SUB-COMMITTEE......................................................6 D. PARENT COMMITTEE MINUTES.................................................................................... 19 E. AGENCY REPORTS ............................................................................................................. 21 1. Alaska Fisheries Science Center, National Marine Fisheries Service ......................................... 22 2. Committee on Age Reading Experts (Care) ...................................................................................... 98 3. Fisheries and Oceans Canada ............................................................................................................... 110 4. International Pacific Halibut Commission (IPHC).......................................................................... 132 5. Northwest Fisheries Science Center, National Marine Fisheries Service................................... 157 6. Southwest Fisheries Science Center, National Marine Fisheries Service ................................... 174 7. State of Alaska, Alaska Department of Fish and Game.................................................................. 190 8. State of Oregon, Oregon Department of Fish and Wildlife ........................................................... 229 9. State of Washington, Washington Department of Fish and Game .............................................. 239 ii A. Overview and Terms of Reference During the Conference on Coordination of Fisheries Regulations Between Canada and the United States (April 1959, Vancouver B.C.), the Ad Hoc Committee on Trawl Fishery Regulations recommended that the governments of Canada and the United States establish a continuing group made up of administrative and technical representatives of Oregon, Washington and Canada to review trawl regulations, to exchange information of status of bottom fish stocks, and to continue, enhance and coordinate bottom fish research programs. The Technical Sub-committee (TSC) was then created by the Committee on Trawl Fishery Regulations (now the Canada-U.S. Groundfish Committee) at the trawl committee meeting held in Seattle, Washington, on November 4, 1959. The TSC first met in Portland, Oregon, on January 19-20, 1960. Dr. K.S. Ketchen (Canada) served as Chairman. Member agencies at the time were the Fisheries Research Board of Canada (now the Department of Fisheries and Oceans), Washington Department of Fisheries (now the Washington Department of Fish and Wildlife), Fish Commission of Oregon (now the Oregon Department of Fish and Wildlife), and the California Department of Fish and Game. In 1972, two more agencies became members – the Alaska Department of Fish and Game and the U.S. Bureau of Commercial Fisheries (now the National Marine Fisheries Service). The TSC has met at least annually since 1960 and submitted a processed report of each meeting to its Parent Committee. These terms of reference did not apply to Pacific halibut, whose research and management are the responsibility of the International Pacific Halibut Commission: 1. Exchange information on the status of groundfish stocks of mutual concern and coordinate, whenever possible, desirable programs of research. 2. Recommend the continuance and further development of research programs having potential value as scientific basis for future management of the groundfish fishery. 3. Review the scientific and technical aspects of existing or proposed management strategies and their component regulations relevant to conservation of stocks or other scientific aspects of groundfish conservation and management of mutual interest. 4. Transmit approved recommendations and appropriate documentation to appropriate sectors of Canadian and U.S. governments and encourage implementation of the recommendations. The TSC has exhibited considerable flexibility in reacting to the diverse problems of the dynamic groundfish fishery off western Canada and the United States. It has coordinated coastwide fishery statistics and research projects; created working groups to deal in depth with specific problems; scheduled workshops at which appropriate specialists met to jointly deal with specific problems and exchange data and information; and provided an on-going forum for exchange of data, procedures, and regulations. The TSC has identified problems associated with the utilization and management of groundfish resources of importance to both countries; often well in advance of public or agency awareness. The concerns expressed in 1962 by the TSC 1 over the development of foreign fisheries and recommendations for stock assessments were significant. TSC-coordinated Canada-U.S. research on Pacific Ocean perch provided the basis for negotiation of bilateral fishing agreements between the United States and Japan and the USSR. Furthermore, the continually updated information provided the basis for quotas imposed in 1977 by Canada and the United States when they both promulgated their 200-mile zones of extended jurisdiction. 2 B. Executive Summary The TSC met May 2-3, 2006 in Otter Rock, Oregon. The meeting was hosted by the Newport labs of the Oregon Department of Fish and Wildlife and the Northwest Fisheries Science Center. As is done each year, participants review previous year (2005) research achievements and projected current year (2006) research for each agency. The TSC again noted the ongoing work of the Committee of Age Reading Experts (CARE) (http://care.psmfc.org/index.htm). These activities are conducted under the auspices of the TSC. CARE and TSC noted that the spring 2006 CARE meeting greatly benefited from the new addition of the Ageing Group at Moss Landing Marine Laboratory in the person of Dr. Greg Cailliet. At the 2005 TSC meeting, it was suggested that CARE consider a rotational scheduling of species specific ageing workshops in order to assure comparability of methods among labs. Further discussion indicated that the impetus for such workshops should probably come from the principal investigators for the species and be held on an as-needed basis. Nevertheless, the TSC noted that sometimes there is a lack of communication between age reading experts and assessment staff regarding between-lab variation in ageing techniques. TSC encouraged CARE members, by letter, to communicate such concerns to users of the data. The TSC noted that plans for the Sablefish Symposium have been changed. The working group has decided that rather than one comprehensive symposium, they would support several smaller focused workshops. This would make more efficient use of the limited resources. For instance, CARE is considering a sablefish otolith
Load more

Recommended publications
  • Rockfish Population Slowly on the Rise
    West Coast rockfish Rockfish population slowly on the rise Above: Rockfish in a kelp forest. Right: Black rockfish. Inset: Juvenile rockfish. More than 60 species of rockfi sh dwell in ocean perch, and canary. These species are of- schooling rockfi sh. vast numbers in the Eastern Pacifi c Ocean fi cially “overfi shed,” a designation which the When you’ve got a permit for hake, you’re from Baja to Alaska. White-fl eshed and deli- council grants when a fi sh’s population drops geared up for hake, you’re fi shing for hake, cious, they frequently school together and to 25 percent of its estimated virgin level, and and you know there is a hell of a lot of hake often intermingle with other commercially a stock is not considered “recovered” until it around, nothing stinks so much as scooping sought fi shes — but seven members of the ge- has climbed back up to the 40-percent mark. up a school of lousy rockfi sh — especially nus Sebastes have spoiled the party. These guidelines were devised and written ones protected by strict bycatch limits. Actually, it was fi shermen, who harvested into policy in 1998 as part of the Fishery Man- The fl eet may have dozens of tonnes of hake them nearly to economic extinction last centu- agement Plan. Since then, two species have as- left uncaught in the quota but must stop be- ry, and this handful of species is now largely cended back to the 40 percent level and been cause the rockfi sh cap has been exceeded.
    [Show full text]
  • Vii Fishery-At-A-Glance: California Sheephead
    Fishery-at-a-Glance: California Sheephead (Sheephead) Scientific Name: Semicossyphus pulcher Range: Sheephead range from the Gulf of California to Monterey Bay, California, although they are uncommon north of Point Conception. Habitat: Both adult and juvenile Sheephead primarily reside in kelp forest and rocky reef habitats. Size (length and weight): Male Sheephead can grow up to a length of three feet (91 centimeters) and weigh over 36 pounds (16 kilograms). Life span: The oldest Sheephead ever reported was a male at 53 years. Reproduction: As protogynous hermaphrodites, all Sheephead begin life as females, and older, larger females can develop into males. They are batch spawners, releasing eggs and sperm into the water column multiple times during their spawning season from July to September. Prey: Sheephead are generalist carnivores whose diet shifts throughout their growth. Juveniles primarily consume small invertebrates like tube-dwelling polychaetes, bryozoans and brittle stars, and adults shift to consuming larger mobile invertebrates like sea urchins. Predators: Predators of adult Sheephead include Giant Sea Bass, Soupfin Sharks and California Sea Lions. Fishery: Sheephead support both a popular recreational and a commercial fishery in southern California. Area fished: Sheephead are fished primarily south of Point Conception (Santa Barbara County) in nearshore waters around the offshore islands and along the mainland shore over rocky reefs and in kelp forests. Fishing season: Recreational anglers can fish for Sheephead from March 1through December 31 onboard boats south of Point Conception and May 1 through December 31 between Pigeon Point and Point Conception. Recreational divers and shore-based anglers can fish for Sheephead year round.
    [Show full text]
  • WCR-2018-10181 October 4, 2018
    UNITED STATES DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration NATIONAL MARINE FISHERIES SERVICE West Coast Region 1201 NE Lloyd Boulevard, Suite 1100 Portland, OR 97232 Refer to NMFS No.: WCR-2018-10181 October 4, 2018 Amy Changchien Director, Office of Planning and Program Development U.S. Department of Transportation Federal Transit Administration 915 Second Avenue Federal Bldg. Suite 3142 Seattle, Washington 98174-1002 Re: Reinitiation of Endangered Species Act Section 7(a)(2) Biological Opinion, and Magnuson-Stevens Fishery Conservation and Management Act Essential Fish Habitat Response for One Structure in Inland Marine Waters of Washington State: Annapolis Ferry Terminal Pier, Ramp, and Float Structure. Dear Ms. Changchien: Thank you for your June 6, 2018, letter requesting reinitiation of consultation with NOAA’s National Marine Fisheries Service (NMFS) pursuant to section 7 of the Endangered Species Act of 1973 (ESA) (16 U.S.C. 1531 et seq.). We also completed an essential fish habitat (EFH) consultation on the proposed action, in accordance with section 305(b)(2) of the Magnuson- Stevens Fishery Conservation and Management Act (MSA) (16 U.S.C. 1801 et seq.) and implementing regulations at 50 CFR 600. The enclosed document contains a biological opinion (opinion) that analyzes the effects of your proposal to permit the removal of one pier, ramp, float (PRF) structure and the installation of one PRF structure. In this opinion, we conclude that the proposed action is not likely to jeopardize the continued existence of Puget Sound (PS) Chinook salmon (Oncorhynchus tshawytscha), PS steelhead (O. mykiss), or PS/Georgia Basin (GB) bocaccio (Sebastes paucispinis), PS/GB yelloweye rockfish (S.
    [Show full text]
  • Rockfish Resources of the South Central California Coast
    140-155 Stephens 11/13/06 9:02 PM Page 140 STEPHENS ET AL.: ROCKFISH RESOURCES OF SOUTH CENTRAL CA CalCOFI Rep., Vol. 47, 2006 ROCKFISH RESOURCES OF THE SOUTH CENTRAL CALIFORNIA COAST: ANALYSIS OF THE RESOURCE FROM PARTYBOAT DATA, 1980–2005 JOHN STEPHENS DEAN WENDT DEBRA WILSON-VANDENBERG California Polytechnic State University California Polytechnic State University, California Department of Fish and Game San Luis Obispo and Vantuna Research Group San Luis Obispo 20 Lower Ragsdale Drive 2550 Nightshade Place 2550 Nightshade Place Monterey, California 93940 Arroyo Grande, California 93420 Arroyo Grande, California 93420 [email protected] JAY CARROLL ROYDEN NAKAMURA ERIN NAKADA Tenera Environmental, Inc. Biological Sciences Biological Sciences 141 Suburban Road, Suite A2 California Polytechnic State University California Polytechnic State University San Luis Obispo, California 93401 San Luis Obispo, California 93407 San Luis Obispo, California 93407 STEVEN RIENECKE JONO WILSON Biological Sciences Biological Sciences California Polytechnic State University California Polytechnic State University San Luis Obispo, California 93407 San Luis Obispo, California 93407 ABSTRACT including Lenarz (1987), Ralston (1998), Gunderson Rockfishes (Sebastes spp.) have historically comprised (1998), and Love et al. (1998, 2002). Rockfish are long- a large proportion of catches in the nearshore recre­ lived, slow to mature (iteroparous), and therefore sub­ ational fishery in California, but declining populations ject to pre-spawning mortality (Leaman 1991). Two of some species have led to increasingly restrictive man­ factors, overfishing and climate change, are considered agement of the resource. This report summarizes new primarily responsible for the declining marine fish pop­ and existing data on rockfishes of the south central coast ulations in much of California.
    [Show full text]
  • Validating Age Estimates for Bocaccio Rockfish with Radiometric Dating Gregor M
    FISHERIES RESEARCH & DEVELOPMENT R/F-174: 5.1.1998–5.31.1999 Validating Age Estimates for Bocaccio Rockfish with Radiometric Dating Gregor M. Cailliet California State University—Moss Landing Marine Laboratories Summary ocaccio (Sebastes An otolith is a bone-like paucispinis), also known structure in a fish’s ear, assumed to calcify in Bas red snapper, rockcod, annual layers. The grouper or salmon grouper, were the number of layers is thus a dominant rockfish in California’s proxy for a fish's age. The early longline fishery and the most otolith on top is estimated to be from a 3-year-old abundant rockfish in the bottom- bocaccio while the one on trawl fishery from Morro Bay to Fort the bottom is estimated to Bragg until the mid-1980s, accord- be from a 28-year-old. ing to a 2001 report published by the Photo: Allen Andrews. California Department of Fish and Game. Annual landings of bocaccio are now about a hundredth of what they were in the early-1970s. The National Marine Fisheries Service estimates that the stock’s spawning biomass has been reduced by about 98 percent. As with other long-lived fish, bocaccio are especially vulnerable to overexploitation: they reach sexual maturity late in life, and their methods provide similar age other species of management reproductive success rate is highly estimates. concern. Dr. Cailliet currently is variable from year to year. Another The scientists’ findings are based funded to validate age statistics for factor contributing to their decline on measurements of the ratios of the blackgill rockfish.
    [Show full text]
  • The Distribution of Pelagic Juvenile Rockfish of the Genus Sebastes in the Upwelling Region Off Central California Ralph J
    LARSON ET AL.: DISTRIBUTION OF PELAGIC JUVENILE ROCKFISH CalCOFl Rep., Vol. 35, 1994 THE DISTRIBUTION OF PELAGIC JUVENILE ROCKFISH OF THE GENUS SEBASTES IN THE UPWELLING REGION OFF CENTRAL CALIFORNIA RALPH J. LARSON WILLIAM H. LENARZ AND STEPHEN RALSTON Department of Biology National Manne Fishenes Semce San Francisco State University 31 50 Paradlse Dnve San Francisco. California 94132 Tiburon, California 94920 ABSTRACT en la composici6n por especies y tallas. Los juveniles Many species of central California rockfishes conclude peligicos mas pequeiios se encontraron a menudo ale- their pelagic stage during the spring-summer upwelling jados de la costa, en la regibn asociada a1 frente de la sur- period, when advection of surface waters could carry gencia, lo que sugiere que fueron transportados por la them away from nearshore postpelagic habitats. We ex- corriente de surgencia. Sin embargo, pocos juveniles amined the distributions of late-stage pelagic juvenile peligicos fueron encontrados del lado hacia mar aden- rockfish in April and May/June of 1987 and 1988, based tro del frente de la surgencia. Los juveniles peligicos de on midwater-trawl surveys between Point Reyes and mayor tamaiio se encontraron a menudo pr6ximos a la Monterey Bay, California. Distributional patterns were costa, aun en 10s periodos de actividad de la surgencia. complex, and changed rapidly with changing oceano- Lo anterior sugiere que 10s juveniles peligicos cambian graphic conditions and with changes in species and size su comportamiento durante sus fases tardias, lo que les composition. The smallest pelagic juveniles often ap- permite desplazarse hacia la costa, o bien, permanecer peared offshore, in the region of the upwelling front, alli a pesar de la surgencia.
    [Show full text]
  • Zalophus Californianus): Insights from Molecular Scatology
    San Jose State University SJSU ScholarWorks Master's Theses Master's Theses and Graduate Research Fall 2016 Sex-specific diet and ockfishr consumption in California sea lions (Zalophus californianus): Insights from molecular scatology Keith Michael Hernandez San Jose State University Follow this and additional works at: https://scholarworks.sjsu.edu/etd_theses Recommended Citation Hernandez, Keith Michael, "Sex-specific diet and ockfishr consumption in California sea lions (Zalophus californianus): Insights from molecular scatology" (2016). Master's Theses. 4757. DOI: https://doi.org/10.31979/etd.49wc-7qbn https://scholarworks.sjsu.edu/etd_theses/4757 This Thesis is brought to you for free and open access by the Master's Theses and Graduate Research at SJSU ScholarWorks. It has been accepted for inclusion in Master's Theses by an authorized administrator of SJSU ScholarWorks. For more information, please contact [email protected]. SEX-SPECIFIC DIET AND ROCKFISH CONSUMPTION IN CALIFORNIA SEA LIONS ( ZALOPHUS CALIFORNIANUS ): INSIGHTS FROM MOLECULAR SCATOLOGY A Thesis Presented to The Faculty of Moss Landing Marine Laboratories San José State University In Partial Fulfillment of the Requirements for the Degree Master of Science by Keith M. Hernandez December 2016 © 2016 Keith Michael Hernandez ALL RIGHTS RESERVED The Designated Thesis Committee Approves the Thesis Titled SEX-SPECIFIC DIET AND ROCKFISH CONSUMPTION IN CALIFORNIA SEA LIONS ( ZALOPHUS CALIFORNIANUS ): INSIGHTS FROM MOLECULAR SCATOLOGY by Keith M. Hernandez APPROVED FOR THE DEPARTMENT OF MARINE SCIENCE SAN JOSÉ STATE UNIVERSITY December 2016 Dr. James T. Harvey Moss Landing Marine Laboratories Dr. Jonathan B. Geller Moss Landing Marine Laboratories Dr. John Carlos Garza National Oceanic and Atmospheric Administration, Southwest Fisheries Science Center ABSTRACT SEX-SPECIFIC DIET AND ROCKFISH CONSUMPTION IN CALIFORNIA SEA LIONS ( ZALOPHUS CALIFORNIANUS ): INSIGHTS FROM MOLECULAR SCATOLOGY By Keith M.
    [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]
  • Appendix B Species Biology
    APPENDIX B SPECIES BIOLOGY Appendix B SPECIES BIOLOGY Species covered in this Biological Assessment Reference were chosen on the basis of species lists obtained from the National Marine Fisheries Service (NMFS) and the U.S. Fish and Wildlife Service (USFWS) (see Appendix C). Because of the inland marine nature of all the Washington State Ferries (WSF) terminals, freshwater fish, oceangoing mammals, and sea turtles (including leatherback sea turtles), terrestrial species, and upland and freshwater plants were excluded from this analysis. NMFS – Listed Threatened, Endangered, and Proposed Species Puget Sound Chinook Salmon (Oncorhynchus tshawytscha) Status Puget Sound Chinook salmon were listed as threatened on August 2, 1999 (Federal Register 1999a.). The evolutionarily significant unit (ESU) includes naturally spawned fish and stocks from 26 artificial propagation programs. Critical Habitat Critical habitat was designated for Puget Sound Chinook salmon on February 16, 2000 (Federal Register 2000.). Critical habitat is designated for areas containing the physical and biological habitat features, or primary constituent elements (PCEs) essential for the conservation of the species or which require special management considerations. PCEs include sites that are essential to supporting one or more life stages of the ESU and that contain physical or biological features essential to the conservation of the ESU. Specific sites and features designated for Puget Sound Chinook salmon include the following: 1. Freshwater spawning sites with water quantity and quality conditions and substrate supporting spawning incubation and larval development 2. Freshwater rearing sites with water quantity and floodplain connectivity to form and maintain physical habitat conditions and support juvenile growth and mobility; water quality and forage supporting juvenile development; and natural cover such as shade, submerged and overhanging large wood, log jams and beaver dams, aquatic vegetation, large rocks and boulders, side channels, and undercut banks 3.
    [Show full text]
  • NOAA/NWFSC Southern California Shelf Rockfish Hook and Line Survey
    NOAA/NWFSC Southern California Shelf Rockfish Hook and Line Survey NOAA Fisheries, Northwest Fisheries Science Center 2725 Montlake Blvd. E, Seattle, WA 98112 John Harms, NOAA/NWFSC Jim Benante, PSMFC/NWFSC Matt Barnhart, PSMFC/NWFSC Rationale • Prior to 2002, there was no ongoing fishery- independent groundfish data collection for the area from Pt. Conception (34 27΄ N) to the Mexican border) • Trawl survey coverage for the region began in 2002; however, untrawlable areas including rocky, high-relief habitats remained unsampled Survey Region: Southern California Bight Primary Objective Develop an annual index of abundance and time series of other biological parameters for key species of structure-associated shelf rockfish (Genus: Sebastes) within the Southern California Bight including bocaccio, vermilion rockfish, sunset rockfish, greenspotted rockfish, and others. Background • Initial planning: Summer 2002 – Meetings between NOAA Fisheries researchers and representatives from the sportfishing and commercial fishing industry • Pilot survey: May 2003 – Research conducted aboard vessels chartered from both the sportfishing and commercial industries • Survey has been conducted annually since 2004 – 2011 will be the 8th year in the data time series Survey Design • Conducted annually • 121 fixed stations sampled during the course of the survey • Sampling area: Pt. Arguello to the boundary with Mexican waters • Depth range: 40m – 230m (common depth range for bocaccio) • Sampling frame developed through meetings with the local sport and commercial fishermen; previous groundfish monitoring programs conducted by California Dept. of Fish and Game; and stations sampled opportunistically during the 2003 pilot study Survey Stations Point Conception Santa Barbara Santa Barbara Channel Point Hueneme San Harrison Reef Miguel Is.
    [Show full text]
  • Summarized History of Oregon Marine Sport Fishing Regulations
    Summarized History of Oregon Marine Sport Fishing Regulations - Page 1 of 16 Groundfish, Offshore Pelagic Species, and Nongame Fish Last saved on 7/27/21 ** NOT ALL REGULATIONS AND DETAILS ARE SHOWN ** Year Effective Jan. 1 (i.e., regulations set preseason) Inseason Change and Effective Date 2021 General marine species: 5-fish 6-fish daily bag limit. 5/10 Daily bag limit is 5 general marine China, copper and quillback rockfishes combined: 1 fish sub- bag limit. species. Cabezon open July 1 – Dec. 31, 1 fish sub-bag limit (of the 5 6 6/1 China, copper and general marine species bag limit), 16” min. quillback rockfishes: Ocean closed seaward of the 40-fathom curve June 1 – Aug. retention prohibited 31. by boats. ________________________________________ Offshore Longleader Fishery: Open outside of the 40-fathom line all year. 10-fish limit. Only these species may be retained: yellowtail, widow, canary, redstripe, greenstriped, silvergray chilipepper, bocaccio, blue and deacon rockfish. Offshore longleader trips cannot be combined with traditional bottomfish, flatfish, or halibut trips except When the bottomfish fishery is restricted to inside of 40- fathoms (June-Aug in 2021) an offshore longleader trip may be combined with all-depth Pacific halibut. However, once rockfish are onboard the vessel, no further halibut fishing may occur. Flatfish Fishery: Open at all depths all year. Daily bag limit: 25 ________________________________________ Retention of yelloweye rockfish is prohibited. Descending devices are mandatory: Any vessel fishing for, or possessing, bottomfish (aka groundfish), including flatfish, or Pacific halibut in the ocean must have a functional descending device onboard, and use it on any rockfish released outside of 30 fathoms.
    [Show full text]
  • Viewed Hydrostatic Pressures in the Deep Sea Reach More Than by [92])
    Gerringer et al. Frontiers in Zoology (2021) 18:16 https://doi.org/10.1186/s12983-021-00399-9 RESEARCH Open Access Habitat influences skeletal morphology and density in the snailfishes (family Liparidae) M. E. Gerringer1* , A. S. Dias2, A. A. von Hagel3, J. W. Orr4, A. P. Summers5 and S. Farina6 Abstract We tested the hypothesis that deep-sea fishes have poorly mineralized bone relative to shallower-dwelling species using data from a single family that spans a large depth range. The family Liparidae (snailfishes, Cottiformes) has representatives across the entire habitable depth range for bony fishes (0 m–> 8000 m), making them an ideal model for studying depth-related trends in a confined phylogeny. We used micro-computed tomography (micro- CT) scanning to test three aspects of skeletal reduction in snailfishes (50 species) across a full range of habitat depths: 1) reduction of structural dimensions, 2) loss of skeletal elements, and 3) reduction in bone density. Using depth data from the literature, we found that with increasing depth, the length of the dentary, neurocranium, and suborbital bones decreases. The ventral suction disk decreases width with increasing maximum habitat depth and is lost entirely in some deeper-living taxa, though not all. Although visual declines in bone density in deeper-living taxa were evident across full skeletons, individual densities of the lower jaw, vertebra, suction disk, hypural plate, and otoliths did not significantly decline with any depth metric. However, pelagic and polar taxa tended to show lower density bones compared to other species in the family. We propose that skeletal reductions allow snailfishes to maintain neutral buoyancy at great depths in the water column, while supporting efficient feeding and locomotion strategies.
    [Show full text]