DOCSLIB.ORG

Management of Pacific Rockfish by S

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Management of Pacific Rockfish by S 1_ ACC nIIiv rv CTATI-r'AcIT I _ r r -LIL I III cLIVILcl I Management of Pacific Rockfish By S. J. Parker, S. A. Berkeley, J. T. Golden, D. R. Gunderson, J. Heifetz, M. A. Hixon, R. Larson, B. M. Leaman, M. S. Love, J. A. Musick, V. M. O'Connell, S. Ralston, H. J. Weeks, and M. M. Yoklavich POLICY The American Fisheries Society (AFS) recognizes the need for conservative and robust manage- ment of Pacific rockfishes because of naturally low population growth, the overfished state of many of the stocks, and complex nature of the mixed-stock fisheries (60-plus species). The AFS recom- mends that catch information be collected on a species-specific basis, and that management targets also be established on a species-specific basis including species taken as bycatch. Such management will require accurate studies of discards at sea. Reduction in rockfish discards should be a manage- ment priority in all fisheries which capture significant numbers of rockfish. The AFS further recom- mends establishment of adequate fishery independent surveys to more accurately assess and moni- tor rockfish stocks. The AFS supports the establishment of systems of Marine Protected Areas to protect the habitat of Pacific rockfish and to promote recovery of stocks. Such areas should be estab- lished along with traditional management measures to control fishing mortality. Regardless of the management strategy used, substantial decreases in fishing mortality must be achieved soon to avoid stock collapses. The AFS encourages its members to become involved by providing technical information needed for protection of rockfish to international, federal, state, and provincial policy makers so decisions are made on a scientific, rather than emotional or political, basis. A. Issue definition relatively low intrinsic rates of Gunderson 1996). Many species have The Pacific rockfishes (genus increase (Adams 1980). As part of the sex-specific growth rates, which can Sebastes) comprise the core of the Society's objective to promote the result in differential age-at-maturity U.S. Pacific Coast bottom fish fish- conservation, development, and and sex-specific natural mortality ery. The genus consists of more than wise use of fisheries, this paper rates (Love et al. 1990; Lenarz and 100 species worldwide, with more describes the interaction between Wyllie Echeverria 1991). Typically, than 60 found off the California, the life history patterns of rockfish their growth pattern results in many Oregon, and Washington coasts, and fishing mortality, and recom- species attaining marketable size at or more than 30 found further north in mends management actions to prior to maturity, and some attaining Canada and Alaska, and 28 in the ensure stable rockfish populations for lengths greater than 50 cm at the age Northwest Pacific (Clay and Kench- the future. of 50% maturity (Love et al. 1990; Haldorson and Love 1991; Beverton ington 1986; Kendall 1991; Lea et al. B. Background 1999). A closely related and commer- 1992; Gunderson 1997). Delayed Downloaded by [Oregon State University] at 13:44 22 November 2011 cially important genus, also common- Life history. Pacific rockfish are maturity, a long reproductive life ly referred to as rockfish, is Sebastolo- some of the longest-lived fishes span, and reproducing multiple bus, the thornyheads, containing three known, with maximum ages for many times are adaptive responses to a Pacific Coast species. The rockfish are species spanning more than 50 years, low probability of successful repro- an extremely successful group and are and some approaching 150 years duction in any given year (Giesel 1976; represented in every habitat from (Archibald et al. 1981; Leaman and Leaman and Beamish 1984). This Mexico to the Aleutian Islands, and Beamish 1984; Love et al. 1990). The reproductive strategy is the rule for from intertidal waters to depths age of 50% maturity is variable rockfish. greater than 1,500 m. Despite this among species but is typically 5-7 Although rockfish are sometimes diversity, the attributes they share years, and may be as late as 20 years reported as being ovoviviparous make them extremely vulnerable to in some species (Wyllie Echeverria (bearing live young without maternal fishing pressure. Using AFS produc- 1987; Barss 1989; Love et al. 1990; nutrition), many studies have con- tivity criteria, rockfishes are classi- O'Connell and Fujioka 1991). Several firmed that they are a primitive fied in the very low productivity cat- studies have shown geographical viviparous group and supply nutri- egory (Musick 1999a, 1999b). Species variation in age-at-maturity depend- ents to developing embryos (Boehlert in this category cannot sustain high ing on latitude and depth (Gunderson and Yoklavich 1984; Boehlert et al. fishing mortality because their et al. 1980; Pearson and Hightower 1991; Wourms 1991; Hopkins et al. reproductive strategies limit them to 1991; Eldridge and Jarvis 1994; 1995; MacFarlane and Bowers 1995; 22 * Fisheries Vol. 25, No. 3 ArC nlf rV CT1TAT TCVI _IR· Mr3 rLIL ,I 3 II LIVICI I Il Beckmann et al. 1998). The number fish possess well-developed swim Reproductive success appears then to of eggs produced at the 50% maturity bladders and are subject to embolism, be restricted to narrow spatial and age commonly range from 2,000 to so many do not survive being brought temporal windows when conditions 500,000 eggs per year, with maximum- to the surface. However, some inves- are favorable for larval survival. length individuals of some species tigators have deflated rockfish swim- Although many general life history producing several million eggs (Gun- bladders prior to tagging, or used in traits are known for the Sebastes derson et al. 1980; Love et al. 1990; situ tagging, thus increasing survivor- genus, few species have been studied Haldorson and Love 1991). Most spe- ship. These studies demonstrated that in detail (Moser 1967; Leaman 1991, cies copulate in the fall, but sperm some species show site fidelity and Love et al. 1998b). This is another may be stored and fertilization may some ability to home after minor dis- common theme with rockfish: a lack not take place until several weeks placements, though some have shown of stock status and biological informa- later (Wyllie Echeverria 1987; Love et substantial movements (Mathews and tion, especially on commercially al. 1990). An exception is in the Sebas- Barker 1983; O'Connell 1991; Pearcy exploited species. Basic parameters tolobus genus where buoyant, egg 1992; Stanely et al. 1994; Carlson et such as maximum age, natural mortal- masses are released and fertilization is al. 1995). Species-specific movements ity rates, fecundity, and age at maturi- believed to be external (Pearcy 1962; depend on latitude, and oceano- ty have only been measured for a lim- Erickson and Pikitch 1993). Copula- graphic conditions (Leaman 1991). ited number of the exploited species, tion has been observed in very few Relatively poor ocean conditions especially the diverse near-shore spe- species of Sebastes, so little is known for the past two decades may have cies (Love et al. 1990). Even for many about courtship or mating behavior reduced recruitment success in some commercially harvested species, much (Helvey 1982; Shinomiya and Ezaki California-Oregon species (Ralston needed information concerning stock 1991; Gingras et al. 1998). The female and Howard 1995). In contrast, in identification, genetic diversity, retains the embryos for 4-5 weeks waters off Alaska and northern British spawning behavior, bycatch levels, until hatching (Boehlert and Yoklavich Columbia above average recruitment total removals, and migration patterns 1984), and parturition generally occurs has occurred in recent years for some are not known or are based on limited in winter or spring for more southerly rockfish species (e.g., Pacific ocean data from small geographic areas. populations and spring or summer in perch, Sebastes alutus) (Richards and Fishery history and status. northerly populations (O'Connell 1987; Olsen 1996; Heifetz et al. 1999). A Washington, Oregon, and California Yoklavich et al. 1996). In most species, dominant feature of rockfish repro- waters. Rockfish have been commer- reproduction occurs annually, but the duction is a pattern of infrequent and cially harvested since the mid-1800s in production of multiple broods occurs irregular years with successful recruit- California, but not until the 1940s in some species and may be related ment during periods with favorable along much of the northwest coast to environmental conditions (Wyllie environmental conditions, and many (Lenarz 1987). In the mid-1960s, foreign Echeverria 1987; Love et al. 1990). years with poor recruitment (Leaman factory trawlers targeted Pacific ocean Generally, the larvae are found in and Beamish 1984; Botsford et al. 1994; perch, with annual catches exceeding the upper mixed zone of the ocean for Ralston and Howard 1995). However, 20,000 metric tons (mt) until passage a variable period of time, before an entire year class may not experi- of the Magnuson-Stevens Fishery metamorphosing into juveniles, ence favorable environmental condi- Conservation and Management Act in which move closer to shore as they tions because of variation in the tim- 1976 (Ianelli and Zimmerman 1998). grow during the spring months (Lar- ing of larval release. Recent research Currently, rockfish are harvested main- son et al. 1994). After several more by Berkeley and Markle (1999) has ly with bottom trawl gear (89%), with months, juveniles
Load more

Recommended publications
  • Movement Patterns of Black Rockfish (Sebastes Melanops)
    Biology, Assessment, and Management of North Pacific Rockfishes 39 Alaska Sea Grant College Program • AK-SG-07-01, 2007 Movement Patterns of Black Rockfish Sebastes( melanops) in Oregon Coastal Waters Steven J. Parker, Polly S. Rankin, Jean M. Olson, and Robert W. Hannah Oregon Department of Fish and Wildlife, Hatfield Marine Science Center, Newport, Oregon Abstract We studied the movement patterns of black rockfish Sebastes( mela- nops) in Oregon coastal waters to estimate home range over daily to annual time scales, determine if females relocate during the reproduc- tive season, and evaluate the influence of environmental variation on movement. We moored 18 acoustic receivers in a 3 × 5 km array south of Newport, Oregon, at depths from 9 to 40 m. We then surgically implanted 42 black rockfish (34-48 cm total length [TL]) with coded, pressure transmitters having an approximate lifespan of 6 months. Fish were tagged in August (n = 6), September (n = 13), October (n = 7), and February (n = 8 depth and 8 non-depth). Fish were temporarily absent from the monitored area for short periods (usually <7 days) indicating limited travel outside the monitored area. Seven fish left the area per- manently. During one full year of monitoring, home ranges were rela- tively small (55±9 ha) and did not vary seasonally. Absences of females >39 cm (likely mature) from the array were longer in duration than for mature males, especially during the reproductive season (November, January, and February), but both sexes had the longest absences dur- ing April through July. These data indicate that black rockfish in open coastal waters live in a very restricted area for long periods as adults, but may relocate periodically.
    [Show full text]
  • Black Rockfish, Sebastes Melanops
    12 Black Rockfish, Sebastes melanops Black rockfish, Sebastes melanops. Photo credit: Edgar Roberts. History of the Fishery The black rockfish, Sebastes melanops, is an important recreational and commercial species in the nearshore rockfish group, particularly in areas north of San Francisco. Black rockfish are an important commercial nearshore species in California, specifically in the Crescent City port complex; 74 percent, by weight, of all black rockfish were landed there over the past decade. Black rockfish are recorded specifically in the market category “black rockfish” on landing receipts, but some black rockfish may also be recorded in other market categories such as “blue rockfish” or “rockfish, group black/blue.” Conversely, due to similarity in appearance, blue rockfish are sometimes recorded as “black rockfish” on landing receipts. Black rockfish are part of the deeper nearshore species complex composed of black, blue, brown, calico, copper, olive, quillback and treefish rockfishes. Since 2003, a Deeper Nearshore Species Fishery Permit (DNSFP) has been required to take deeper nearshore species. Black rockfish are caught primarily using hook and line gears, with marginal amounts caught in traps. In the past, black rockfish were also caught using trawl gear or gill nets. Since 1998, commercial landings of black rockfish made up approximately 52 percent of deeper nearshore rockfish species landings by weight. Commercial landings of black rockfish fluctuated between 110,603 pounds (50 metric tons) and 229,640 pounds (104 metric tons) from 1998 to 2008 (Figure 12-1) but showed no distinct trend. Many of the decreases in annual landings correspond to changes in management structure, as discussed below in Management Considerations.
    [Show full text]
  • Browning Washington 0250O 1
    Evidence of habitat associations and distribution patterns of rockfish in Puget Sound from archival data (1974-1977) Hilary F. Browning A thesis submitted in partial fulfillment of the requirements for the degree of Master of Marine Affairs University of Washington 2013 Committee: Terrie Klinger Ben Stewart-Koster Program Authorized to Offer Degree: School of Marine and Environmental Affairs 1 University of Washington Graduate School This is to certify that I have examined this copy of a master’s thesis by Hilary F. Browning and have found that it is complete and satisfactory in all respects, and that any and all revisions required by the final examining committee have been made. Committee Members: _____________________________________________________ Terrie Klinger _____________________________________________________ Ben Stewart-Koster Date: __________________________________ 2 In presenting this thesis in partial fulfillment of the requirements for a master’s degree at the University of Washington, I agree that the Library shall make its copies freely available for inspection. I further agree that extensive copying of this thesis is allowable only for scholarly purposes, consistent with “fair use” as prescribed in the U.S. Copyright Law. Any other reproduction for any purposes or by any means shall not be allowed without my written permission. Signature: _________________________________ Date: _____________________________________ 3 University of Washington ABSTRACT Evidence of habitat associations and distribution patterns of rockfish in Puget Sound from archival data (1974-1977) Hilary F. Browning Chair of Supervisory Committee: Associate Professor Terrie Klinger School of Marine and Environmental Affairs Rockfish (Sebastes spp.) populations have declined dramatically and failed to recover in Puget Sound, WA following a period of heavy exploitation in the 1970s and 1980s.
    [Show full text]
  • Rockfish (Sebastes) That Are Evolutionarily Isolated Are Also
    Biological Conservation 142 (2009) 1787–1796 Contents lists available at ScienceDirect Biological Conservation journal homepage: www.elsevier.com/locate/biocon Rockfish (Sebastes) that are evolutionarily isolated are also large, morphologically distinctive and vulnerable to overfishing Karen Magnuson-Ford a,b, Travis Ingram c, David W. Redding a,b, Arne Ø. Mooers a,b,* a Biological Sciences, Simon Fraser University, 8888 University Drive, Burnaby BC, Canada V5A 1S6 b IRMACS, Simon Fraser University, 8888 University Drive, Burnaby BC, Canada V5A 1S6 c Department of Zoology and Biodiversity Research Centre, University of British Columbia, #2370-6270 University Blvd., Vancouver, Canada V6T 1Z4 article info abstract Article history: In an age of triage, we must prioritize species for conservation effort. Species more isolated on the tree of Received 23 September 2008 life are candidates for increased attention. The rockfish genus Sebastes is speciose (>100 spp.), morpho- Received in revised form 10 March 2009 logically and ecologically diverse and many species are heavily fished. We used a complete Sebastes phy- Accepted 18 March 2009 logeny to calculate a measure of evolutionary isolation for each species and compared this to their Available online 22 April 2009 morphology and imperilment. We found that evolutionarily isolated species in the northeast Pacific are both larger-bodied and, independent of body size, morphologically more distinctive. We examined Keywords: extinction risk within rockfish using a compound measure of each species’ intrinsic vulnerability to Phylogenetic diversity overfishing and categorizing species as commercially fished or not. Evolutionarily isolated species in Extinction risk Conservation priorities the northeast Pacific are more likely to be fished, and, due to their larger sizes and to life history traits Body size such as long lifespan and slow maturation rate, they are also intrinsically more vulnerable to overfishing.
    [Show full text]
  • Osteological Development of Wild-Captured Larvae and a Juvenile Sebastes Koreanus (Pisces, Scorpaenoidei) from the Yellow Sea Hyo Jae Yu and Jin-Koo Kim*
    Yu and Kim Fisheries and Aquatic Sciences (2016) 19:20 DOI 10.1186/s41240-016-0021-0 RESEARCH ARTICLE Open Access Osteological development of wild-captured larvae and a juvenile Sebastes koreanus (Pisces, Scorpaenoidei) from the Yellow Sea Hyo Jae Yu and Jin-Koo Kim* Abstract The osteological development in Sebastes koreanus is described and illustrated on the basis of 32 larvae [6.11–11.10 mm body length (BL)] and a single juvenile (18.60 mm BL) collected from the Yellow Sea. The first-ossified skeletal elements, which are related to feeding, swimming, and respiration, appear in larvae of 6.27 mm BL; these include the jaw bones, palatine, opercular, hyoid arch, and pectoral girdle. All skeletal elements are fully ossified in the juvenile observed in the study. Ossification of the neurocranium started in the frontal, pterotic, and parietal regions at 6.27 mm BL, and then in the parasphenoid and basioccipital regions at 8.17 mm BL. The vertebrae had started to ossify at ~7.17 mm BL, and their ossification was nearly complete at 11.10 mm BL. In the juvenile, although ossification of the pectoral girdle was fully complete, the fusion of the scapula and uppermost radial had not yet occurred. Thus, the scapula and uppermost radial fuse during or after the juvenile stage. The five hypurals in the caudal skeleton were also fused to form three hypural elements. The osteological results are discussed from a functional viewpoint and in terms of the comparative osteological development in related species. Keywords: Sebastes koreanus, Korean fish, Larvae, Juvenile, Osteological development Background Sebastes koreanus Kim and Lee 1994, in the family Osteological development in teleost fishes involves a Scorpaenidae (or Sebastidae sensu Nakabo and Kai sequence of remarkable morphological and functional 2013), is smaller than its congeneric species and is changes, occurring in different developmental stages regarded as endemic to the Yellow Sea (Kim and Lee (Löffler et al.
    [Show full text]
  • Management Plan for the Rougheye/Blackspotted Rockfish Complex (Sebastes Aleutianus and S
    DRAFT SPECIES AT RISK ACT MANAGESPECIESMENT PLAN AT RISK SERIES ACT MANAGEMENT PLAN SERIES MANAGEMENT PLAN FOR THE ROUGHEYE/BLACKSPOTTEDMANAGEMENT PLAN FOR THE ROCKFISH ROUGHEY E COMPLEXROCKFISHROUGHEYE (SEBASTES ALEUTIANUSROCKFISH COMPLEX AND S. MELANOSTICTUS(SEBASTES ALEUTIANUS) AND LONGSPINE AND S. THORNYHEADMELANOSTICTUS (SEBASTOLOBUS) AND LONGSPINE ALTIVELIS THORNYHE) IN AD CANADA(SEBAST OLOBUS ALTIVELIS)INCANADA SEBASTES ALEUTIANUS; SEBASTES MELANOSTICTUS SEBASTES ASEBASTOLOBUSLEUTIANUS; SEBASTES ALTIVELIS MEL ANOSTICTUS SEBASTOLOBUS ALTIVELIS S. aleutianus S. melanostictus 2012 Photo Credit: DFO Sebastolobus altivelis 2012 About the Species at Risk Act Management Plan Series What is the Species at Risk Act (SARA)? SARA is the Act developed by the federal government as a key contribution to the common national effort to protect and conserve species at risk in Canada. SARA came into force in 2003, and one of its purposes is “to manage species of special concern to prevent them from becoming endangered or threatened.” What is a species of special concern? Under SARA, a species of special concern is a wildlife species that could become threatened or endangered because of a combination of biological characteristics and identified threats. Species of special concern are included in the SARA List of Wildlife Species at Risk. What is a management plan? Under SARA, a management plan is an action-oriented planning document that identifies the conservation activities and land use measures needed to ensure, at a minimum, that a species of special concern does not become threatened or endangered. For many species, the ultimate aim of the management plan will be to alleviate human threats and remove the species from the List of Wildlife Species at Risk.
    [Show full text]
  • Management Plan for the Yelloweye Rockfish (Sebastes Ruberrimus) in Canada
    Proposed Species at Risk Act Management Plan Series Management Plan for the Yelloweye Rockfish (Sebastes ruberrimus) in Canada Yelloweye Rockfish 2018 Recommended citation: Fisheries and Oceans Canada. 2018. Management Plan for the Yelloweye Rockfish (Sebastes ruberrimus) in Canada [Proposed]. Species at Risk Act Management Plan Series. Fisheries and Oceans Canada, Ottawa. iv + 32 pp. Additional copies: For copies of the management plan, or for additional information on species at risk, including COSEWIC Status Reports, residence descriptions, action plans, and other related recovery documents, please visit the SAR Public Registry. Cover illustration: K.L. Yamanaka, Fisheries and Oceans Canada Également disponible en français sous le titre « Plan de gestion visant le sébaste aux yeux jaunes (Sebastes ruberrimus) au Canada [Proposition]» © Her Majesty the Queen in Right of Canada, represented by the Minister of the Environment, 2018. All rights reserved. ISBN ISBN to be included by SARA Responsible Agency Catalogue no. Catalogue no. to be included by SARA Responsible Agency Content (excluding the illustrations) may be used without permission, with appropriate credit to the source. Management Plan for the Yelloweye Rockfish [Proposed] 2018 Preface The federal, provincial, and territorial government signatories under the Accord for the Protection of Species at Risk (1996) agreed to establish complementary legislation and programs that provide for effective protection of species at risk throughout Canada. Under the Species at Risk Act (S.C. 2002, c.29) (SARA), the federal competent ministers are responsible for the preparation of a management plan for species listed as special concern and are required to report on progress five years after the publication of the final document on the Species at Risk Public Registry.
    [Show full text]
  • Southward Range Extension of the Goldeye Rockfish, Sebastes
    Acta Ichthyologica et Piscatoria 51(2), 2021, 153–158 | DOI 10.3897/aiep.51.68832 Southward range extension of the goldeye rockfish, Sebastes thompsoni (Actinopterygii: Scorpaeniformes: Scorpaenidae), to northern Taiwan Tak-Kei CHOU1, Chi-Ngai TANG2 1 Department of Oceanography, National Sun Yat-sen University, Kaohsiung, Taiwan 2 Department of Aquaculture, National Taiwan Ocean University, Keelung, Taiwan http://zoobank.org/5F8F5772-5989-4FBA-A9D9-B8BD3D9970A6 Corresponding author: Tak-Kei Chou ([email protected]) Academic editor: Ronald Fricke ♦ Received 18 May 2021 ♦ Accepted 7 June 2021 ♦ Published 12 July 2021 Citation: Chou T-K, Tang C-N (2021) Southward range extension of the goldeye rockfish, Sebastes thompsoni (Actinopterygii: Scorpaeniformes: Scorpaenidae), to northern Taiwan. Acta Ichthyologica et Piscatoria 51(2): 153–158. https://doi.org/10.3897/ aiep.51.68832 Abstract The goldeye rockfish,Sebastes thompsoni (Jordan et Hubbs, 1925), is known as a typical cold-water species, occurring from southern Hokkaido to Kagoshima. In the presently reported study, a specimen was collected from the local fishery catch off Keelung, northern Taiwan, which represents the first specimen-based record of the genus in Taiwan. Moreover, the new record ofSebastes thompsoni in Taiwan represented the southernmost distribution of the cold-water genus Sebastes in the Northern Hemisphere. Keywords cold-water fish, DNA barcoding, neighbor-joining, new recorded genus, phylogeny, Sebastes joyneri Introduction On an occasional survey in a local fish market (25°7.77′N, 121°44.47′E), a mature female individual of The rockfish genusSebastes Cuvier, 1829 is the most spe- Sebastes thompsoni (Jordan et Hubbs, 1925) was obtained ciose group of the Scorpaenidae, which comprises about in the local catches, which were caught off Keelung, north- 110 species worldwide (Li et al.
    [Show full text]
  • XIV. Appendices
    Appendix 1, Page 1 XIV. Appendices Appendix 1. Vertebrate Species of Alaska1 * Threatened/Endangered Fishes Scientific Name Common Name Eptatretus deani black hagfish Lampetra tridentata Pacific lamprey Lampetra camtschatica Arctic lamprey Lampetra alaskense Alaskan brook lamprey Lampetra ayresii river lamprey Lampetra richardsoni western brook lamprey Hydrolagus colliei spotted ratfish Prionace glauca blue shark Apristurus brunneus brown cat shark Lamna ditropis salmon shark Carcharodon carcharias white shark Cetorhinus maximus basking shark Hexanchus griseus bluntnose sixgill shark Somniosus pacificus Pacific sleeper shark Squalus acanthias spiny dogfish Raja binoculata big skate Raja rhina longnose skate Bathyraja parmifera Alaska skate Bathyraja aleutica Aleutian skate Bathyraja interrupta sandpaper skate Bathyraja lindbergi Commander skate Bathyraja abyssicola deepsea skate Bathyraja maculata whiteblotched skate Bathyraja minispinosa whitebrow skate Bathyraja trachura roughtail skate Bathyraja taranetzi mud skate Bathyraja violacea Okhotsk skate Acipenser medirostris green sturgeon Acipenser transmontanus white sturgeon Polyacanthonotus challengeri longnose tapirfish Synaphobranchus affinis slope cutthroat eel Histiobranchus bathybius deepwater cutthroat eel Avocettina infans blackline snipe eel Nemichthys scolopaceus slender snipe eel Alosa sapidissima American shad Clupea pallasii Pacific herring 1 This appendix lists the vertebrate species of Alaska, but it does not include subspecies, even though some of those are featured in the CWCS.
    [Show full text]
  • Groundfish Harvest from Parallel Seasons in the Bering Sea-Aleutian Islands Area
    Fishery Management Report No. 08-43 Bering Sea-Aleutian Islands Area State-Waters Groundfish Fisheries and Groundfish Harvest from Parallel Seasons in 2007 by Krista Milani August 2008 Alaska Department of Fish and Game Divisions of Sport Fish and Commercial Fisheries Symbols and Abbreviations The following symbols and abbreviations, and others approved for the Système International d'Unités (SI), are used without definition in the following reports by the Divisions of Sport Fish and of Commercial Fisheries: Fishery Manuscripts, Fishery Data Series Reports, Fishery Management Reports, and Special Publications. All others, including deviations from definitions listed below, are noted in the text at first mention, as well as in the titles or footnotes of tables, and in figure or figure captions. Weights and measures (metric) General Measures (fisheries) centimeter cm Alaska Administrative fork length FL deciliter dL Code AAC mideye to fork MEF gram g all commonly accepted mideye to tail fork METF hectare ha abbreviations e.g., Mr., Mrs., standard length SL kilogram kg AM, PM, etc. total length TL kilometer km all commonly accepted liter L professional titles e.g., Dr., Ph.D., Mathematics, statistics meter m R.N., etc. all standard mathematical milliliter mL at @ signs, symbols and millimeter mm compass directions: abbreviations east E alternate hypothesis HA Weights and measures (English) north N base of natural logarithm e cubic feet per second ft3/s south S catch per unit effort CPUE foot ft west W coefficient of variation CV gallon gal copyright © common test statistics (F, t, χ2, etc.) inch in corporate suffixes: confidence interval CI mile mi Company Co.
    [Show full text]
  • Venom Evolution Widespread in Fishes: a Phylogenetic Road Map for the Bioprospecting of Piscine Venoms
    Journal of Heredity 2006:97(3):206–217 ª The American Genetic Association. 2006. All rights reserved. doi:10.1093/jhered/esj034 For permissions, please email: [email protected]. Advance Access publication June 1, 2006 Venom Evolution Widespread in Fishes: A Phylogenetic Road Map for the Bioprospecting of Piscine Venoms WILLIAM LEO SMITH AND WARD C. WHEELER From the Department of Ecology, Evolution, and Environmental Biology, Columbia University, 1200 Amsterdam Avenue, New York, NY 10027 (Leo Smith); Division of Vertebrate Zoology (Ichthyology), American Museum of Natural History, Central Park West at 79th Street, New York, NY 10024-5192 (Leo Smith); and Division of Invertebrate Zoology, American Museum of Natural History, Central Park West at 79th Street, New York, NY 10024-5192 (Wheeler). Address correspondence to W. L. Smith at the address above, or e-mail: [email protected]. Abstract Knowledge of evolutionary relationships or phylogeny allows for effective predictions about the unstudied characteristics of species. These include the presence and biological activity of an organism’s venoms. To date, most venom bioprospecting has focused on snakes, resulting in six stroke and cancer treatment drugs that are nearing U.S. Food and Drug Administration review. Fishes, however, with thousands of venoms, represent an untapped resource of natural products. The first step in- volved in the efficient bioprospecting of these compounds is a phylogeny of venomous fishes. Here, we show the results of such an analysis and provide the first explicit suborder-level phylogeny for spiny-rayed fishes. The results, based on ;1.1 million aligned base pairs, suggest that, in contrast to previous estimates of 200 venomous fishes, .1,200 fishes in 12 clades should be presumed venomous.
    [Show full text]
  • Humboldt Bay Fishes
    Humboldt Bay Fishes ><((((º>`·._ .·´¯`·. _ .·´¯`·. ><((((º> ·´¯`·._.·´¯`·.. ><((((º>`·._ .·´¯`·. _ .·´¯`·. ><((((º> Acknowledgements The Humboldt Bay Harbor District would like to offer our sincere thanks and appreciation to the authors and photographers who have allowed us to use their work in this report. Photography and Illustrations We would like to thank the photographers and illustrators who have so graciously donated the use of their images for this publication. Andrey Dolgor Dan Gotshall Polar Research Institute of Marine Sea Challengers, Inc. Fisheries And Oceanography [email protected] [email protected] Michael Lanboeuf Milton Love [email protected] Marine Science Institute [email protected] Stephen Metherell Jacques Moreau [email protected] [email protected] Bernd Ueberschaer Clinton Bauder [email protected] [email protected] Fish descriptions contained in this report are from: Froese, R. and Pauly, D. Editors. 2003 FishBase. Worldwide Web electronic publication. http://www.fishbase.org/ 13 August 2003 Photographer Fish Photographer Bauder, Clinton wolf-eel Gotshall, Daniel W scalyhead sculpin Bauder, Clinton blackeye goby Gotshall, Daniel W speckled sanddab Bauder, Clinton spotted cusk-eel Gotshall, Daniel W. bocaccio Bauder, Clinton tube-snout Gotshall, Daniel W. brown rockfish Gotshall, Daniel W. yellowtail rockfish Flescher, Don american shad Gotshall, Daniel W. dover sole Flescher, Don stripped bass Gotshall, Daniel W. pacific sanddab Gotshall, Daniel W. kelp greenling Garcia-Franco, Mauricio louvar
    [Show full text]