DOCSLIB.ORG

Revision Draft

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Revision Draft MSC Pre-assessment of the Trap and Handline Finfish Fishery in El Rosario, Baja California, Mexico Prepared for: Sociedad Cooperativa de Producción Pesquera Ensenada S.C.L. Prepared by: Francisco Fernández Rivera Melo (COBI) Alesa Flores Guzmán (COBI) Jose Francisco Chávez (COBI) Reviewed by: Mónica Valle-Esquivel, Jodi Bostrom, Erin Wilson (MRAG Americas) Report Validated by: MRAG Americas Inc. April, 2020 Comunidad y Biodiversidad, A.C. Calle Isla del Peruano #215 Colonia Lomas de Miramar Guaymas, Sonora, México, CP 85448 Correo electrónico [email protected] (información) Report by Comunidad y Biodiversidad, AC Validated by (CAB) MRAG Americas Inc. Sociedad Cooperativa de Producción Pesquera Ensenada S.C.L. Fishery client Assessment Type Comprehensive pre-assessment Project code US2647_COBI_MX_PA_Validation Version 3.0 Francisco Javier Fernández Rivera-Melo Prepared by Alesa Flores Guzmán José Francisco Chávez Monica Valle-Esquivel, Jodi Bostrom, Erin Wilson (MRAG Reviewed by Americas) Approved by Amanda Stern-Pirlot 2 1 Contents 1 Contents .......................................................................................................... 3 1.1 Tables index .......................................................................................................... 5 1.2 Figures index ......................................................................................................... 6 2 Glossary ........................................................................................................... 7 3 Executive summary .......................................................................................... 9 4 Report details ................................................................................................. 11 4.1 Aims and constraints of the pre-assessment ........................................................ 11 4.2 Version details ..................................................................................................... 12 5 Unit(s) of Assessment .................................................................................... 12 5.1 Unit(s) of Assessment .......................................................................................... 12 6 Traceability .................................................................................................... 15 6.1 Traceability within the fishery ............................................................................... 15 7 Pre-assessment results ................................................................................. 17 7.1 Pre-assessment results overview ......................................................................... 17 7.1.1 Overview .................................................................................................................. 17 7.1.2 Recommendations .................................................................................................... 19 7.2 Summary of potential conditions by Principle ....................................................... 19 7.3 Summary of Performance Indicator level scores................................................... 20 7.4 Principle 1 ........................................................................................................... 28 7.4.1 Principle 1 background.............................................................................................. 28 7.4.2 Catch profiles ............................................................................................................ 43 7.4.3 Total Allowable Catch (TAC) and catch data ............................................................. 45 7.4.1 Principle 1 Performance Indicator scores and rationales............................................ 47 7.5 Principle 2 ........................................................................................................... 60 7.5.1 Principle 2 background.............................................................................................. 60 7.5.2 Principle 2 Performance Indicator scores and rationales PI 2.1.1 – Primary species outcome 71 7.6 Principle 3 ......................................................................................................... 113 7.6.1 Principle 3 background............................................................................................ 113 7.6.2 Principle 3 Performance Indicator scores and rationales.......................................... 117 7.7 List of references ............................................................................................... 130 8 Appendices .................................................................................................. 136 8.1 Assessment information ..................................................................................... 136 8.1.1 Small-scale fisheries ............................................................................................... 136 3 8.2 Evaluation processes and techniques ................................................................ 137 8.2.1 Site visits ................................................................................................................ 137 8.2.2 Recommendations for stakeholder participation in full assessment .......................... 137 8.3 Risk-Based Framework outputs – delete if not applicable ................................... 138 8.3.1 Consequence Analysis (CA) ................................................................................... 139 8.3.2 Productivity Susceptibility Analysis (PSA) ................................................................ 142 8.3.3 Consequence Spatial Analysis (CSA)...................................................................... 149 4 1.1 Tables index Table 1 – Unit(s) of Assessment (UoA) ............................................................................................ 14 Table 2 – Traceability within the fishery ............................................................................................ 16 Table 3 – Key to likely scoring level in Table 4 and P1, P2, and P3 performance indicators. ............. 17 Table 4 – Summary of Performance Indicator level scores ............................................................... 19 Table 5 – Summary of Performance Indicator level scores ............................................................... 20 Table 6. Northwest Mexico fishery management (CONAPESCA) offices . ........................................ 40 Table 7 – Total Allowable Catch (TAC) and catch data – Common name and species name ............ 45 Ocean Whitefish (Caulolatilus princeps) ........................................................................................... 45 Table 8 – Total Allowable Catch (TAC) and catch data - ................................................................... 46 California sheephead (Semicossyphus pulcher) ............................................................................... 46 Table 9 – Total Allowable Catch (TAC) and catch data – .................................................................. 46 Barred sandbass (Paralabrax nebulifer) ........................................................................................... 46 Table 10 – Total Allowable Catch (TAC) and catch data – ................................................................ 46 Vermillion rockfish (Sebastes constellatus) and Starry rockfish (S. miniatus) .................................... 46 Table 11 – Catch composition of the handline fishery by the Ensenada cooperative- Percentage of target species and bycatch (data form the fishery monitoring program 2018 - 2019). Species under 1% are not included below. .......................................................................... 62 Table 12 – Catch composition of the trap fishery by the Ensenada cooperative- Percentage of target species and bycatch are show. Species under 0.22% are not included. ..................... 62 Table 13 – ETP species in El Rosario, BC (based in the IUCN list, CITES and NOM-059 species with Baja California coast distribution). ................................................................................ 65 Tabla 14 – No-take refuge zones in the concession area of the Ensenada cooperative (Unpublished data, S. C. P. P. Ensenada). .......................................................................... 67 Table 15 – Scoring elements – UoA 1 (Traps) .................................................................................. 69 Table 16 – Scoring elements – UoA 2 (Handline) ............................................................................. 70 Table 17 – Management measures described in the CNP for finfish fishery (handline and trap) in El Rosario (Taken from DOF, 2010)................................................................................... 113 Table 18 – Small-scale fisheries ..................................................................................................... 136 Table 19 – Recommended organizations to consult in a full assessment. ....................................... 138 Table 20 – CA scoring template - Caulolatilus princeps .................................................................. 139 Table 21 – CA scoring template - Semicossyphus pulcher ............................................................. 139 Table 22 – CA scoring template – Paralabrax nebulifer .................................................................. 140 Table 23 – CA scoring template – Sebastes constellatus...............................................................
Load more

Recommended publications
  • CHECKLIST and BIOGEOGRAPHY of FISHES from GUADALUPE ISLAND, WESTERN MEXICO Héctor Reyes-Bonilla, Arturo Ayala-Bocos, Luis E
    ReyeS-BONIllA eT Al: CheCklIST AND BIOgeOgRAphy Of fISheS fROm gUADAlUpe ISlAND CalCOfI Rep., Vol. 51, 2010 CHECKLIST AND BIOGEOGRAPHY OF FISHES FROM GUADALUPE ISLAND, WESTERN MEXICO Héctor REyES-BONILLA, Arturo AyALA-BOCOS, LUIS E. Calderon-AGUILERA SAúL GONzáLEz-Romero, ISRAEL SáNCHEz-ALCántara Centro de Investigación Científica y de Educación Superior de Ensenada AND MARIANA Walther MENDOzA Carretera Tijuana - Ensenada # 3918, zona Playitas, C.P. 22860 Universidad Autónoma de Baja California Sur Ensenada, B.C., México Departamento de Biología Marina Tel: +52 646 1750500, ext. 25257; Fax: +52 646 Apartado postal 19-B, CP 23080 [email protected] La Paz, B.C.S., México. Tel: (612) 123-8800, ext. 4160; Fax: (612) 123-8819 NADIA C. Olivares-BAñUELOS [email protected] Reserva de la Biosfera Isla Guadalupe Comisión Nacional de áreas Naturales Protegidas yULIANA R. BEDOLLA-GUzMáN AND Avenida del Puerto 375, local 30 Arturo RAMíREz-VALDEz Fraccionamiento Playas de Ensenada, C.P. 22880 Universidad Autónoma de Baja California Ensenada, B.C., México Facultad de Ciencias Marinas, Instituto de Investigaciones Oceanológicas Universidad Autónoma de Baja California, Carr. Tijuana-Ensenada km. 107, Apartado postal 453, C.P. 22890 Ensenada, B.C., México ABSTRACT recognized the biological and ecological significance of Guadalupe Island, off Baja California, México, is Guadalupe Island, and declared it a Biosphere Reserve an important fishing area which also harbors high (SEMARNAT 2005). marine biodiversity. Based on field data, literature Guadalupe Island is isolated, far away from the main- reviews, and scientific collection records, we pres- land and has limited logistic facilities to conduct scien- ent a comprehensive checklist of the local fish fauna, tific studies.
    [Show full text]
  • Paralabrax Nebulifer) in Nearshore Waters Off Northern San Diego County
    ROBERTS ET AL.: FEEDING HABITS OF BARRED SAND BASS CalCOFI Rep., Vol. XXV, 1984 THE FEEDING HABITS OF JUVENILE-SMALL ADULT BARRED SAND BASS (PARALABRAX NEBULIFER) IN NEARSHORE WATERS OFF NORTHERN SAN DIEGO COUNTY DALE A. ROBERTS‘, EDWARD E. DeMARTINI’, AND KENNETH M. PLUMMER2 Marine Science Institute University of California Santa Barbara, California 93106 ABSTRACT pelecipodos y peces epibent6nicos. Estas observa- The feeding habits of juvenile-small adult barred ciones no concuerdan con estudios previos, 10s cuales sand bass (Purulubrax nebulifer) are described, based consideran a la anchoveta del norte, Engruulis mor- on 165 specimens 123-523 mm standard length (SL) dux, como el elemento mas importante en la dieta de collected between San Onofre and Oceanside, Califor- P. nebulifer de tallas similares a las analizadas durante nia, at depths ranging from 8 to 30 m. Collections esta estudio. La dieta de P. nebulifer pequeiios (< 240 were made during an annual cycle from March 1981 to mm de longitud esthndar) es distinta debido a la pre- March 1982. sencia de crustaceos (misidaceos y antipodos gamir- The diet of the barred sand bass indicates that it idos), mientras que 10s ejemplares grandes (> 320 forages in close proximity to the substrate. Brachyuran mm LE) consumieron presas grandes como Porich- crabs, mysids, pelecypods, and epibenthic fishes were thys notutus (80-160 mm LE) y Octopus. P. nebulifer the most important prey. These findings are contrary de talla mediana (240-320 mm LE) contenian en su to previous studies, which found northern anchovy est6mago presas similares a las consumidas por 10s (Engruulis mordux) to be of major importance in the ejemplares grandes y pequeiios.
    [Show full text]
  • Report on the California Data-Limited Fisheries Project: Integrating MSE Into the Management of California State Fisheries
    Report on the California Data-Limited Fisheries Project: Integrating MSE into the Management of California State Fisheries July 2020 Introduction Over the past five years, California Department of Fish and Wildlife (CDFW) has made a substantial investment of resources in integrating management strategy evaluation (MSE) into the science and management of California state fisheries. The initial phase of the project, beginning in July 2015, used a stakeholder process to demonstrate how MSE could be used to manage data-limited fisheries in the state through the application of the Data-Limited Methods Toolkit (DLMtool). Four fisheries were analyzed as case studies for that phase of the project: Barred Sand Bass, California Halibut, Red Sea Urchin, and Warty Sea Cucumber. This led to the incorporation of MSE into the revised 2018 Master Plan for Fisheries (Master Plan) and laid the groundwork for continued collaboration with CDFW to build the scientific capacity of its staff and to apply MSE to additional fisheries. The current phase of the project, beginning in February 2018, included a series of webinars and workshops with a group of six CDFW biologists and managers to train them in basic fishery population dynamics modeling and the fundamentals of MSE using the DLMtool. The second component of the project involved developing new or updated MSEs for eight fisheries, including the four from the initial phase of the project and the following additional fisheries: Kelp Bass, Rock Crab, Spiny Lobster, and Redtail Surfperch. The eight fisheries were chosen because they represent a range of life histories and data availability. The outputs of these MSEs, which have been submitted to CDFW for review as of the date of this report, will be used to understand the tradeoffs and levels of uncertainty with the current management frameworks for each fishery and how they perform in both the short- and long-term.
    [Show full text]
  • Paralabrax, Pisces, Serranidae)
    BUTLER ET AL.: DEVELOPMENTAL STAGES OF THREE SEA BASSES CalCOFI Rep., Vol. XXm, 1982 DEVELOPMENTAL STAGES OF THREE CALIFORNIA SEA BASSES (PARALABRAX, PISCES, SERRANIDAE) JOHN L BUTLER, H. GEOFFREY MOSER, GREGORY S. HAGEMAN. AND LAYNE E. NORDGREN National Oceanic and Atmospheric Administraticm Depaltrnent of Biological Suencas National Marine Fisheries Service Universiiy of Southern CaMornia thnhwest Fishecies Center universily Park La Jdla, California 92038 Lw Angeles, California 90007 ABSTRACT was known from Cedros Island south to Cab San Eggs, larvae, and juveniles of kelp bass, Parala- Lucas and the Gulf of California (Fitch and Shultz bra clathratus, barred sand bass, P. nebulifer, and 1978). Larvae of Paralabrax sp. have been illustrated spotted sand bass, P. rnaculatofasciatus, are described by Kendall (1979) from CalCOFI specimens, which from specimens reared in the laboratory and from we have identified as P. clathratus. All three species specimens collected in the field. Eggs of spotted sand are found in nearshore areas from the surface to about bass'are 0.80-0.89 mm in diameter; eggs of kelp bass 600 feet (Miller and Lea 1972). and barred sand bass are 0.94-0.97 mm in diameter. The kelp and sand basses combined rank second in Larvae and juveniles of the three species may be dis- the California sport fish catch (Oliphant 1979). Iden- tinguished by differences in pigmentation during most tifying these three species in ichthyoplankton collec- stages of development. Larvae of the two species of tions may be important in monitoring population sand bass are indistinguishable during notochord changes and assessing the impact of human activities flexion.
    [Show full text]
  • Distribution, Abundance, and Biomass of Giant Sea Bass (Stereolepis Gigas) Off Santa Catalina Island, California, 2014-2015
    Bull. Southern California Acad. Sci. 115(1), 2016, pp. 1–14 E Southern California Academy of Sciences, 2016 The Return of the King of the Kelp Forest: Distribution, Abundance, and Biomass of Giant Sea Bass (Stereolepis gigas) off Santa Catalina Island, California, 2014-2015 Parker H. House*, Brian L.F. Clark, and Larry G. Allen California State University, Northridge, Department of Biology, 18111 Nordhoff St., Northridge, CA, 91330 Abstract.—It is rare to find evidence of top predators recovering after being negatively affected by overfishing. However, recent findings suggest a nascent return of the critically endangered giant sea bass (Stereolepis gigas) to southern California. To provide the first population assessment of giant sea bass, surveys were conducted during the 2014/2015 summers off Santa Catalina Island, CA. Eight sites were surveyed on both the windward and leeward side of Santa Catalina Island every two weeks from June through August. Of the eight sites, three aggregations were identified at Goat Harbor, The V’s, and Little Harbor, CA. These three aggregation sites, the largest containing 24 individuals, contained a mean stock biomass of 19.6 kg/1000 m2 over both summers. Over the course of both summers the giant sea bass population was primarily made up of 1.2 - 1.3 m TL individuals with several small and newly mature fish observed in aggregations. Comparison to historical data for the island suggests giant sea bass are recovering, but have not reached pre-exploitation levels. The giant sea bass (Stereolepis gigas) is the largest teleost to inhabit nearshore rocky reefs and kelp forests in the northeastern Pacific (Hawk and Allen 2014).
    [Show full text]
  • UC San Diego UC San Diego Electronic Theses and Dissertations
    UC San Diego UC San Diego Electronic Theses and Dissertations Title A historical perspective of California recreational fisheries using a new database of "trophy" fish records (1966-2013), combined with fisheries analyses of three species in the genus Paralabrax Permalink https://escholarship.org/uc/item/1g40s1h0 Author Bellquist, Lyall F. Publication Date 2015 Peer reviewed|Thesis/dissertation eScholarship.org Powered by the California Digital Library University of California UNIVERSITY OF CALIFORNIA, SAN DIEGO A historical perspective of California recreational fisheries using a new database of “trophy” fish records (1966-2013), combined with fisheries analyses of three species in the genus Paralabrax A dissertation submitted in partial satisfaction of the requirements for the degree Doctor of Philosophy in Marine Biology by Lyall F. Bellquist Committee in charge: Brice Semmens, Chair Richard Carson David Checkley Philip Hastings Ed Parnell 2015 Copyright Lyall F. Bellquist, 2015 All rights reserved. The Dissertation of Lyall F. Bellquist is approved, and it is acceptable in quality and form for publication on microfilm and electronically: ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ Chair University of California, San
    [Show full text]
  • Fish Bulletin 161. California Marine Fish Landings for 1972 and Designated Common Names of Certain Marine Organisms of California
    UC San Diego Fish Bulletin Title Fish Bulletin 161. California Marine Fish Landings For 1972 and Designated Common Names of Certain Marine Organisms of California Permalink https://escholarship.org/uc/item/93g734v0 Authors Pinkas, Leo Gates, Doyle E Frey, Herbert W Publication Date 1974 eScholarship.org Powered by the California Digital Library University of California STATE OF CALIFORNIA THE RESOURCES AGENCY OF CALIFORNIA DEPARTMENT OF FISH AND GAME FISH BULLETIN 161 California Marine Fish Landings For 1972 and Designated Common Names of Certain Marine Organisms of California By Leo Pinkas Marine Resources Region and By Doyle E. Gates and Herbert W. Frey > Marine Resources Region 1974 1 Figure 1. Geographical areas used to summarize California Fisheries statistics. 2 3 1. CALIFORNIA MARINE FISH LANDINGS FOR 1972 LEO PINKAS Marine Resources Region 1.1. INTRODUCTION The protection, propagation, and wise utilization of California's living marine resources (established as common property by statute, Section 1600, Fish and Game Code) is dependent upon the welding of biological, environment- al, economic, and sociological factors. Fundamental to each of these factors, as well as the entire management pro- cess, are harvest records. The California Department of Fish and Game began gathering commercial fisheries land- ing data in 1916. Commercial fish catches were first published in 1929 for the years 1926 and 1927. This report, the 32nd in the landing series, is for the calendar year 1972. It summarizes commercial fishing activities in marine as well as fresh waters and includes the catches of the sportfishing partyboat fleet. Preliminary landing data are published annually in the circular series which also enumerates certain fishery products produced from the catch.
    [Show full text]
  • Common Fishes of California
    COMMON FISHES OF CALIFORNIA Updated July 2016 Blue Rockfish - SMYS Sebastes mystinus 2-4 bands around front of head; blue to black body, dark fins; anal fin slanted Size: 8-18in; Depth: 0-200’+ Common from Baja north to Canada North of Conception mixes with mostly with Olive and Black R.F.; South with Blacksmith, Kelp Bass, Halfmoons and Olives. Black Rockfish - SMEL Sebastes melanops Blue to blue-back with black dots on their dorsal fins; anal fin rounded Size: 8-18 in; Depth: 8-1200’ Common north of Point Conception Smaller eyes and a bit more oval than Blues Olive/Yellowtail Rockfish – OYT Sebastes serranoides/ flavidus Several pale spots below dorsal fins; fins greenish brown to yellow fins Size: 10-20in; Depth: 10-400’+ Midwater fish common south of Point Conception to Baja; rare north of Conception Yellowtail R.F. is a similar species are rare south of Conception, while being common north Black & Yellow Rockfish - SCHR Sebastes chrysomelas Yellow blotches of black/olive brown body;Yellow membrane between third and fourth dorsal fin spines Size: 6-12in; Depth: 0-150’ Common central to southern California Inhabits rocky areas/crevices Gopher Rockfish - SCAR Sebastes carnatus Several small white blotches on back; Pale blotch extends from dorsal spine onto back Size: 6-12 in; Depth: 8-180’ Common central California Inhabits rocky areas/crevice. Territorial Copper Rockfish - SCAU Sebastes caurinus Wide, light stripe runs along rear half on lateral line Size:: 10-16in; Depth: 10-600’ Inhabits rocky reefs, kelpbeds,
    [Show full text]
  • A Checklist of the Fishes of the Monterey Bay Area Including Elkhorn Slough, the San Lorenzo, Pajaro and Salinas Rivers
    f3/oC-4'( Contributions from the Moss Landing Marine Laboratories No. 26 Technical Publication 72-2 CASUC-MLML-TP-72-02 A CHECKLIST OF THE FISHES OF THE MONTEREY BAY AREA INCLUDING ELKHORN SLOUGH, THE SAN LORENZO, PAJARO AND SALINAS RIVERS by Gary E. Kukowski Sea Grant Research Assistant June 1972 LIBRARY Moss L8ndillg ,\:Jrine Laboratories r. O. Box 223 Moss Landing, Calif. 95039 This study was supported by National Sea Grant Program National Oceanic and Atmospheric Administration United States Department of Commerce - Grant No. 2-35137 to Moss Landing Marine Laboratories of the California State University at Fresno, Hayward, Sacramento, San Francisco, and San Jose Dr. Robert E. Arnal, Coordinator , ·./ "':., - 'I." ~:. 1"-"'00 ~~ ~~ IAbm>~toriesi Technical Publication 72-2: A GI-lliGKL.TST OF THE FISHES OF TtlE MONTEREY my Jl.REA INCLUDING mmORH SLOUGH, THE SAN LCRENZO, PAY-ARO AND SALINAS RIVERS .. 1&let~: Page 14 - A1estria§.·~iligtro1ophua - Stone cockscomb - r-m Page 17 - J:,iparis'W10pus." Ribbon' snailt'ish - HE , ,~ ~Ei 31 - AlectrlQ~iu.e,ctro1OphUfi- 87-B9 . .', . ': ". .' Page 31 - Ceb1diehtlrrs rlolaCewi - 89 , Page 35 - Liparis t!01:f-.e - 89 .Qhange: Page 11 - FmWulns parvipin¢.rl, add: Probable misidentification Page 20 - .BathopWuBt.lemin&, change to: .Mhgghilu§. llemipg+ Page 54 - Ji\mdJ11ui~~ add: Probable. misidentifioation Page 60 - Item. number 67, authOr should be .Hubbs, Clark TABLE OF CONTENTS INTRODUCTION 1 AREA OF COVERAGE 1 METHODS OF LITERATURE SEARCH 2 EXPLANATION OF CHECKLIST 2 ACKNOWLEDGEMENTS 4 TABLE 1
    [Show full text]
  • Casgy09002.Pdf
    UNIVERSITY OF CALIFORNIA, SAN DIEGO Movement patterns, habitat preferences, and fisheries biology of the common thresher shark (Alopias vulpinus) in the Southern California Bight A dissertation submitted in partial satisfaction of the requirements for the degree Doctor of Philosophy in Marine Biology by Daniel Patrick Cartamil Committee in charge: Professor Jeffrey B. Graham, Chair Professor David M. Checkley Professor Philip A. Hastings Professor Cleridy E. Lennert Professor Richard H. Rosenblatt Professor David S. Woodruff 2009 i IGNATURE PAGE The dissertation of Daniel Patrick Cartamil is approved, and it is acceptable in quality and form for publication on microfilm and electronically: ________________________________________ ________________________________________ ________________________________________ ________________________________________ ________________________________________ Chair University of California, San Diego 2009 iii EPIGRAPH “The swordfish swimmes under the whale, and pricketh him upward. The thresher keepeth above him, and with a mighty great thing like unto a flail, hee so bangeth the whale, that hee will roare as though it thundered, and doth give him such blowes with his weapon, that you would think it to be the crake of a great shot” Block Island fisherman, 1609 iv TABLE OF CONTENTS Signature Page .......................................................................................................... iii Epigraph ...................................................................................................................
    [Show full text]
  • Giant Sea Bass, Stereolepis Gigas
    8 Giant Sea Bass, Stereolepis gigas Giant sea bass, Stereolepis gigas. Photo credit: Edgar Roberts. History of the Fishery The giant sea bass, Stereolepis gigas, an apex predator of shallow rocky reefs, is the largest resident bony fish found along the California coast and offshore islands. They range from the southern tip of Baja California, Mexico to Humboldt Bay in northern California and in the northern Gulf of California. Aggregations of both sexes are predominantly found south of Point Conception. Giant sea bass are commonly seen by recreational scuba divers in California along La Jolla, Catalina Island, and Anacapa Island. Because the giant sea bass is slow growing, long lived, and aggregates in large groups, it is susceptible to over fishing. In the past, it was not uncommon for nearly entire aggregations to be eliminated by commercial and recreational fisheries. Commercial fishing for the giant sea bass began in 1870 in southern California, much earlier than the recreational fishery. In 1932 California commercial landings peaked at more than 254,000 pounds (115 metric tons). Mexican commercial landings peaked at 807,750 pounds (367 metric tons) in 1934 and declined to less than 200,000 pounds (91 metric tons) in 1964. Early commercial fishers used hand lines to catch giant sea bass, but as the resource declined, fishing with hand lines became too inefficient and they changed to gill nets. This technique quickly reduced stock numbers, driving the commercial fishery south into Mexican waters. Commercial and recreational fishing for giant sea bass in Mexico continues today with no restrictions. The recreational fishery for giant sea bass began in 1895, peaking in California in 1964 and in Mexico in 1973.
    [Show full text]
  • Effects of the Blob on Settlement of Spotted Sand Bass, Paralabrax Maculatofasciatus, to Mission Bay, San Diego, CA
    RESEARCH ARTICLE Effects of the Blob on settlement of spotted sand bass, Paralabrax maculatofasciatus, to Mission Bay, San Diego, CA Anthony Basilio1, Steven Searcy1*, Andrew R. Thompson2 1 Environmental and Ocean Sciences, University of San Diego, San Diego, California, United States of America, 2 Fisheries Resources Division, Southwest Fisheries Science Center, NOAA Fisheries Service, La Jolla, California, United States of America * [email protected] a1111111111 a1111111111 a1111111111 a1111111111 Abstract a1111111111 The West Coast of the United States experienced variable and sometimes highly unusual oceanographic conditions between 2012 and 2015. In particular, a warm mass of surface water known as the Pacific Warm Anomaly (popularly as ªThe Blobº) impinged on southern California in 2014, and warm-water conditions remained during the 2015 El Niño. We exam- OPEN ACCESS ine how this oceanographic variability affected delivery and individual characteristics of lar- Citation: Basilio A, Searcy S, Thompson AR (2017) val spotted sand bass (Paralabrax maculatofasciatus) to an estuarine nursery habitat in Effects of the Blob on settlement of spotted sand southern California. To quantify P. maculatofasciatus settlement patterns, three larval col- bass, Paralabrax maculatofasciatus, to Mission Bay, San Diego, CA. PLoS ONE 12(11): e0188449. lectors were installed near the mouth of Mission Bay, San Diego CA, and retrieved weekly https://doi.org/10.1371/journal.pone.0188449 from June±October of 2012±2015. During `Blob` conditions in 2014 and 2015, lower settle- Editor: Heather M. Patterson, Department of ment rates of spotted sand bass were associated with higher sea surface temperature and Agriculture and Water Resources, AUSTRALIA lower wind speed, chlorophyll a (chl a) and upwelling.
    [Show full text]