DOCSLIB.ORG

State of California the Resources Agency DEPARTMENT of FISH and GAME

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
State of California the Resources Agency DEPARTMENT of FISH and GAME Southern California independent sport fishing survey Quarterly Report no. 10 Item Type monograph Authors Wine, Vickie L. Publisher California Department of Fish and Game, Marine Resources Region Download date 28/09/2021 04:37:15 Link to Item http://hdl.handle.net/1834/18018 State of California The Resources Agency DEPARTMENT OF FISH AND GAME jpn A k - 3 :.,p.,W\/ hh~LmSltirig iLd*pii>s Laboratories P. 0. i3u/( 223 k Landtng, Calif. 95039 SOUTHERN CALIFORNIA INDEPENDENT SPORT FISHING SURVEY QUARTERLY REPORT NO. 10 by Vickie L. Wine . MARINE RE SOURCES Administrative Report No. 78-6 1 SOUTHERN CALIFORNIA INDEPENDENT SPORT FISHING SURVEY -/ QUARTERLY REPORT NO. 10 Vickie L. Wine -2/ ABSTRACT During the October 1 - December 31, 1977 quarter, 28 launch ramps, hoists, and boat rental locations were sampled a total of 294 times. During the sample days 11,942 anglers and 1,025 divers were interviewed. They expended 83,882 effort-hours and landed 36,741 fishes and other organisms of 163 identified species. The ten most commonly landed species were 1) Pacific mackerel, Scomber japonieus, 16%; 2) white croaker, Genyonemus tineatus, 16%; 3) olive rockfish, Sebastes serranoides, 6%; 4) blue rockfish, S. mystinus, 4%; 5) halfmoon, Mediatuna catiforniensis, 4%; 6) Pacific bonito, Sarda chitiensis, 3%; 7) rock scallop, Hinnites muZtirugosus, 2%; 8) chilipepper, Sebastes goodei, 2%; 9) greenspotted rockfish, S. chZorostictus, 2%; and 10) kelp bass, Paratabrm ctathratus, 2%. -1/ Marine Resources Region, Administrative Report No. 78-6 May 1978. I 2/ Marine Resources Region, California State Fisheries Laboratory, I 350 Golden Shore, Long Beach, California 90802. SOUTHERN CALIFORNIA INDEPENDENT SPORT FISHING SURVEY QUARTERLY REPORT NO. 10 INTRODUCTION This is the third year of the Southern California Independent Sport Fishing study' conducted by the California Department of Fish and Game in cooperation with the National Marine Fisheries Service. The purposes of the study are to estimate effort levels expended by sport anglers and divers fishing from privately owned boats, to estimate the magnitude and species composition of their catch, and to determine the degree of sport fishermen's compliance with size limit regulations. This information is used to evaluate the impact of private-boat sport fishermen on southern California's marine resources. OPERATIONS The sampling plan consists of a program of random field sampling at the major launch ramps, hoists, and boat rental locations from San Diego to Santa Barbara Counties. Sampling is conducted on all weekends and holidays and on randomly chosen weekdays in accordance with avail- able manpower. Field samplers remain at sampling locations from 1000 to 1800 hours, and an effort is made to interview all returning anglers and divers. Information on length of fishing trip, number of fishing poles used, and number of people angling or diving is gathered along with the identification and enumeration of all fishes, molluscs, crabs, and lob- sters in possession (no data are requested about species caught but not kept). An attempt is made to measure all species with legal size re- quirements. Eight other species are also measured to provide data for life history studies. Sampling sites are located in Santa Barbara, Ventura, Los Angeles, Orange, and San Diego Counties. During the quarter we sampled 18 launch ramps, 5 boat hoists, and 5 boat rental locations. RESULTS AND DISCUSSION During the October 1 - December 31, 1977 quarter, 28 launch ramps, hoists, and boat rental locations were sampled 294 times. During the sample days 11,942 anglers and 1,025 divers were interviewed. They ex- pended 78,447 angler-trip-hours 31 and 5,435 diver-trip-hours -3/ , and landed 36,741 fishes and other organisms of 163 identified species as ' well as 1,035 unidentified f ikleted fishes (Table 1). Effort Angler effort decreased this quarter to less than one-half of the summertime level. This was due to an abrupt decline soon after Labor Day in the number of vacationing fishermen. Weather conditions remained conducive to fishing until late December when a series of storms brought fishing activity to a standstill. Diving activity decreased by almost one-half during this time. Effort levels were high in October when the season opened for California spiny lobster, PanuZimcs interruptus, a favorite catch of divers. Very few anglers ventured out on weekdays during this quarter. The ratio of weekend to weekday anglers changed from 4:l during the summer quarter to 7:l during the fall quarter. Catch Until this quarter, white croaker had been the most frequently landed species throughout the 2+ years this survey has been conducted. But the entrance of the very strong 1976 year class of Pacific mackerel into the local fishery nudged the white croaker out of its number-one position. The Pacific mackerel catch just barely topped -31 The unit of effort is 1 hour of trip time per angler or diver. Adjustments are made for those using more than one fishing pole concurrently. that of the white croaker though; they both constituted 16% of the identified catch. The rockfishes, Sebastes spp., which are usually the mainstay of the sportfishery during the winter months, contributed 31% of the total caFch. Samplers identified 163 species of fishes, crusta- ceans, molluscs, coelenterates, and echinoderms, of which 49 species accounted for 95% of the identified catch (Table 2). The ten most commonly landed species were 1) Pacific mackerel, 16%; 2) white croaker, 16%, 3) olive rockfish, 6%; 4) blue rockfish, 4%; 5) halfmoon, 4%; 6) Pacific bonito, 3%; 7) rock scallop, 2%; 8) chili- pepper, 2%; 9) greenspotted rockfish, 2%; and 10) kelp bass, 2%. In Santa Barbara County two-thirds of the catch was composed of . rockfishes, although Pacific mackerel was the most frequently landed single species (Table 3). Divers brought in very good catches of lob- sters, rock scallops, and red abalones, HaZiotis rufescens. Rockfishes were also predominant in the Ventura County catch, but white croaker, Pacific mackerel, and Pacific sanddab, Citharichthys sordidus, were taken in substantial numbers. Divers concentrated their efforts on lobsters; rock scallops, pink abalones, HaZiotis corrugata; and California sheephead, PimeZometopon puZchmun. Pacific mackerel and white croaker vied for first place in the Los Angeles County catch; Pacific mackerel narrowly won. The two species accounted for nearly one-half of, the county's identified catch. Rockfishes contributed only a small portion of the catch (19%). As is usual for this area in the fall and winter months, halfmoon; black surfperch, Embiotoca jacksoni; and queenfish, Seriphus politus, were landed frequently. The Orange County catch was composed mainly of surface fishes. Pacific mackerel and white croaker contributed 23% of the catch, and Pacific sanddabs, Pacific bonito, kelp bass, and barred sand bass, Pmatabrax nebulifer, were landed frequently. There was not a lot of diving activity in the area, but good catches of rock scallops were landed by the few divers who did venture out. Olive rockfish was the most commonly landed fish in San Diego County. The rockfish family contributed 37% of the catch, but surface fishes such as white croaker, Pacific mackerel, barred sand bass, Pacific bonito, and ocean whitefish, CauZoZatiZus princeps, composed more than I one-fourth of the total catch. Divers landed substantial catches of red abalones, rock scallops, California sheephead, and green abalones, I Catch Per Unit of Effort The catch per unit of effort (CPUE) for anglers ranged from 0.12 I to 0.91 fishlangler-trip-hour (Table 4). The best catch successes in the sampled region were, as usual, in Santa Barbara and Ventura counties. In these areas the target species are rockfishes, which are readily available to anglers. In Los Angeles County the large catches of Pacific mackerel and white croaker resulted in a higher CPUE value than normal for this time of year. Some Orange County and San Diego County anglers spent much time searching for marlin, Tetraptumcs spp., which lowered the CPUE values for these areas. The CPUE values for divers ranged from 0.14 to 1.92 (Table 5) . Divers in Los Angeles County fared best, averaging 0.95 organismsldiver- trip-hour. In Santa Barbara, Orange, and Ventura Counties the CPUE values averaged 0.69, 0.68, and 0.66 respectively. San Diego County divers averaged 0.61 organisms/diver-trip-hour. Length Frequencies The proportion of legal size fishes sampled during the quarter dropped somewhat compared with the previous quarter's data. Favored game species be.came less available to anglers at this time of year, and the temptatioh to retain "short" fishes was great. The percentage of legal kelp bass taken fell from 87 during the summer to 73 during the fall. Al- though the percentage of legal barred'sand bass remained the same, the pro- portion of legal spotted sand bass, ParaZabrax macuZatofasciatus, dropped 10% One-half of all California halibut, ParaZichthys caZifomicus, measured were sub-legal (Table 6). Abalones, HaZiotis spp., averaged 91% legals, and less than 3% of the lobsters measured were'sub-legal. ESTIMATES We estimated 41,000 angler days and 3,200 diver days were spent fish- ing in southern California marine waters during October through December 1977 (Tables 7 and 8). This represents a decrease of about two-thirds of the angler effort and two-fifths of the diver effort expended during the summer quarter. An estimated 115,000 fishes were landed by anglers, and divers brought back 12,000 fishes, abalones, and other organisms. Two species,. the Pacific mackerel and the white croaker, formed the largest component of the catch, with an estimated 20,000 Pacific mackerel and 20,000 white croaker landed. Almost 80% of the catch of these species was landed in Los Angeles and Orange Counties. The rock- fish family contributed 39,000 fishes--nearly one-third of the estimated catch.
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]
  • Appendix E: Fish Species List
    Appendix F. Fish Species List Common Name Scientific Name American shad Alosa sapidissima arrow goby Clevelandia ios barred surfperch Amphistichus argenteus bat ray Myliobatis californica bay goby Lepidogobius lepidus bay pipefish Syngnathus leptorhynchus bearded goby Tridentiger barbatus big skate Raja binoculata black perch Embiotoca jacksoni black rockfish Sebastes melanops bonehead sculpin Artedius notospilotus brown rockfish Sebastes auriculatus brown smoothhound Mustelus henlei cabezon Scorpaenichthys marmoratus California halibut Paralichthys californicus California lizardfish Synodus lucioceps California tonguefish Symphurus atricauda chameleon goby Tridentiger trigonocephalus cheekspot goby Ilypnus gilberti chinook salmon Oncorhynchus tshawytscha curlfin sole Pleuronichthys decurrens diamond turbot Hypsopsetta guttulata dwarf perch Micrometrus minimus English sole Pleuronectes vetulus green sturgeon* Acipenser medirostris inland silverside Menidia beryllina jacksmelt Atherinopsis californiensis leopard shark Triakis semifasciata lingcod Ophiodon elongatus longfin smelt Spirinchus thaleichthys night smelt Spirinchus starksi northern anchovy Engraulis mordax Pacific herring Clupea pallasi Pacific lamprey Lampetra tridentata Pacific pompano Peprilus simillimus Pacific sanddab Citharichthys sordidus Pacific sardine Sardinops sagax Pacific staghorn sculpin Leptocottus armatus Pacific tomcod Microgadus proximus pile perch Rhacochilus vacca F-1 plainfin midshipman Porichthys notatus rainwater killifish Lucania parva river lamprey Lampetra
    [Show full text]
  • UC Santa Barbara UC Santa Barbara Electronic Theses and Dissertations
    UC Santa Barbara UC Santa Barbara Electronic Theses and Dissertations Title The role of fluctuating food supply on recruitment, survival and population dynamics in the sea Permalink https://escholarship.org/uc/item/6x20t65m Author Okamoto, Daniel K. Publication Date 2014 Peer reviewed|Thesis/dissertation eScholarship.org Powered by the California Digital Library University of California UNIVERSITY OF CALIFORNIA Santa Barbara The role of fluctuating food supply on recruitment, survival and population dynamics in the sea A Dissertation submitted in partial satisfaction of the requirements for the degree of Doctor of Philosophy in Ecology, Evolution and Marine Biology by Daniel Kenji Okamoto Committee in Charge: Professor Sally J. Holbrook, Chair Dr Daniel C. Reed Professor Russell J. Schmitt Professor Cherie J. Briggs December 2014 The Dissertation of Daniel Kenji Okamoto is approved: Dr Daniel C. Reed Professor Russell J. Schmitt Professor Cherie J. Briggs Professor Sally J. Holbrook, Committee Chair September 2014 for Christian & A.E. Taylor iii Acknowledgements Throughout my tenure at this University, I've had the blessing of a committee in- vested in and dedicated to my success. Watching friends and colleagues float in the wake of advisors' absentia always made me appreciate my own mentors. Dan Reed, Sally Hol- brook, and Russ Schmitt let me follow my own curiosity and pursuits, and provided direction, time, criticism (and data) to keep me focused and productive. Cherie Briggs too provided critical and and remarkable discussions that led to moments of redirection in my research. Many groups financially supported my research and graduate career. Foremost among these was the National Science Foundation in support of the Santa Barbara Coastal Long Term Ecological Research (LTER) site.
    [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]
  • The Surfperches)
    UC San Diego Fish Bulletin Title Fish Bulletin No. 88. A Revision of the Family Embiotocidae (The Surfperches) Permalink https://escholarship.org/uc/item/3qx7s3cn Author Tarp, Fred Harald Publication Date 1952-10-01 eScholarship.org Powered by the California Digital Library University of California STATE OF CALIFORNIA DEPARTMENT OF FISH AND GAME BUREAU OF MARINE FISHERIES FISH BULLETIN No. 88 A Revision of the Family Embiotocidae (The Surfperches) By FRED HARALD TARP October, 1952 1 2 3 4 1. INTRODUCTION* The viviparous surfperches (family Embiotocidae) are familiar to anglers and commercial fishermen alike, along the Pacific Coast of the United States. Until the present, 21 species have been recognized in the world. Two additional forms are herein described as new. Twenty species are found in California alone, although not all are restricted to that area. The family, because of its surf-loving nature, is characteristic of inshore areas, although by no means restricted to this niche. Two species are generally found in tidepools, while one, Zalembius rosaceus, occurs in fairly deep waters along the continental shelf. Because of their rather close relationships, the Embiotocidae have been a problem for the angler, the ecologist, the parasitologist, and others, to identify and even, occasionally, have proved to be difficult for the professional ichthy- ologist to determine. An attempt has been made in this revision, to remedy this situation by including full descrip- tions based on populations, rather than on individual specimens, and by including a key which, it is hoped, will prove adequate for juvenile specimens, as well as for adults.
    [Show full text]
  • [Thesis Title Page]
    FEEDING MORPHOLOGY AND KINEMATICS IN SURFPERCHES (EMBIOTOCIDAE: PERCIFORMES): EVOLUTIONARY AND FUNCTIONAL CONSEQUENCES A Thesis Presented to the Faculty of California State University, Stanislaus and Moss Landing Marine Laboratories In Partial Fulfillment of the Requirements for the Degree of Master of Science in Marine Science By Kimberly Quaranta June 2011 i ACKNOWLEDGEMENTS This work would not have been made possible without the acceptance, battle, forgiveness, and mentorship of Dr. Lara Ferry. She helped create a love for functional morphology and fishes, and gave me a chance when needed most. To Dr. Greg Cailliet, who in his own right is a gift to life learning, I am truly grateful to have worked on this thesis with him. It has been an academic and emotional adventure that has left me a better person due to his influence and guidance. Dr. Peter Wainwright was instrumental in providing valuable comments and time spent pouring over my dataset. This thesis or dream of becoming a marine scientist would also not have been possible without the amazing support of Dr. Pam Roe. Gratitude for her efforts in processing paperwork, valuable edits and comments, and overall passion and enthusiasm for science will never fully be adequately expressed in words. To all my friends and cohorts at MLML for countless hours working late nights, playing foosball, having wonderful dinner parties, scuba diving, helping each other with our research, and just being there for one another, I thank you. To all the MLML staff and faculty, you truly made this experience special and unforgettable. Special thanks to Kenneth Coale, who has been a great leader, friend and teacher.
    [Show full text]
  • State of California the Resources Agency DEPARTMENT of FISH and G M , SOUTHERN CALIFORNIA INDEPENDENT SPORT FISHING SURVEY QUART
    Southern California independent sport fishing survey Quarterly Report No. 7 Item Type monograph Authors Wine, Vickie L. Publisher California Department of Fish and Game, Marine Resources Region Download date 24/09/2021 16:18:14 Link to Item http://hdl.handle.net/1834/18116 Lemdins Marine Laborai-ori03 State of California P, 0. &rx 223 The Resources Agency Landing, Calif. 95C.:7 DEPARTMENT OF FISH AND GM, SOUTHERN CALIFORNIA INDEPENDENT SPORT FISHING SURVEY QUARTERLY REPORT NO. 7 Vickie L. Wine MARINE RESOURCES Administrative Report No. 77-13 SOUTHEKN CALIFORNIA INDEPENDENT SPORT FISHING SURVEY -11 QUARTERLY REPORT NO. 7 by 2 / Vickie L. Wine - ABSTWCT During the January 1 - March 31, 1977 quarter, 28 launch ramps, hoists and boat rental locations were sampled 166 times. During the sample days 9,209 anglers and 496 divers were interviewed. They expended 61,347 effort hours and landed 22,454 fishes of 133 identified species. The ten most commonly landed species were: 1) white croaker, Gznyonemus Zineatus, 16%; 2) Pacific bonito, Sarda chiliensis, 7%; 3) blue rockfish, Sebastes mystinus, 5%; 4) olive rockfish, S. serranoides, 5%; 5) ocean whitefish, CauZoZatiZus princeps, 5%; 6) barred sand bass, Pa~a7,abrm nebuZifWer, 5%; 7) Pacific mackerel, Scornher japonicus, 3%; 8) bocaccio, Sehastes paucispinis, 3%; 9) kelp bass, ParaZabrm ~Zathratus,3%; and 10) copper rockfish, Sehastes cazc/~imns, 3%. -I/ Marine Resources Region, Administrative Report No. 77-13 July 1977. -2/ Marine Resources Region, California State Fisheries Laboratory, 350 Golden Shore, Long Beach, California 90802. SOUTHERN CALIFORNIA INDEPENDENT SPORT FISHING SURVEY QUARTERLY REPORT NO. 7 by Vickie L.
    [Show full text]
  • UC Santa Barbara Dissertation Template
    UNIVERSITY OF CALIFORNIA Santa Barbara The effects of parasites on the kelp-forest food web A dissertation submitted in partial satisfaction of the requirements for the degree Doctor of Philosophy in Ecology, Evolution and Marine Biology by Dana Nicole Morton Committee in charge: Professor Armand M. Kuris, Chair Professor Mark H. Carr, UCSC Professor Douglas J. McCauley Dr. Kevin D. Lafferty, USGS/Adjunct Professor March 2020 The dissertation of Dana Nicole Morton is approved. ____________________________________________ Mark H. Carr ____________________________________________ Douglas J. McCauley ____________________________________________ Kevin D. Lafferty ____________________________________________ Armand M. Kuris, Committee Chair March 2020 The effects of parasites on the kelp-forest food web Copyright © 2020 by Dana Nicole Morton iii ACKNOWLEDGEMENTS I did not complete this work in isolation, and first express my sincerest thanks to many undergraduate volunteers: Cristiana Antonino, Glen Banning, Farallon Broughton, Allison Clatch, Melissa Coty, Lauren Dykman, Christian Franco, Nora Frank, Ali Gomez, Kaylyn Harris, Sam Herbert, Adolfo Hernandez, Nicky Huang, Michael Ivie, Conner Jainese, Charlotte Picque, Kristian Rassaei, Mireya Ruiz, Deena Saad, Veronica Torres, Savanah Tran, and Zoe Zilz. I would also like to thank Ralph Appy, Bob Miller, Clint Nelson, Avery Parsons, Christoph Pierre, and Christian Orsini for donating specimens to this project and supporting my own sample collection. I also thank Jim Carlton, Milton Love, David Marcogliese, John McLaughlin, and Christoph Pierre for sharing their expertise in thoughtful discussions on this work. The quality of this work would have suffered without assistance on parasite identification from Ralph Appy, Francisco Aznar, Janine Caira, Willy Hemmingsen, Ken Mackenzie, Harry Palm, Julli Passarelli, Mark Rigby, and Danny Tang.
    [Show full text]
  • Eny of Prey Selection by Black Surfperch Embiotoca Jacksoni (Pisces: Embiotocidae): the Roles of Fish Morphology, Foraging Behavior, and Patch Selection
    MARINE ECOLOGY PROGRESS SERIES - Published August 15 Mar. Ecol. Prog. Ser. eny of prey selection by black surfperch Embiotoca jacksoni (Pisces: Embiotocidae): the roles of fish morphology, foraging behavior, and patch selection Russell J. Schmitt and Sally J. Holbrook Department of Biological Sciences and the Marine Science Institute, University of California, Santa Barbara, California 93106, USA ABSTRACT: Proximate mechanisms leading to similarities and differences in diets of juvenile and adult black surfperch Embiotoca jacksoni in populations at Santa Catalina Island (USA)were explored. These fish are microcarnivorous, harvesting invertebrate prey primarily from benthic turf and foliose algae. Ontogenetic differences in prey size ultimately reflect age-specific differences in size of fish. Young juveniles are apparently gape limited and use a visual picking mode of foraging. This strongly influences the array of algal substrates from which prey can be effectively harvested. Turf substrates are used extensively by older fish that employ winnowing behavior to separate prey from debris. The ability to winnow develops slowly during the first year of life and allows exploitation of turf, a prey- rich, extensive resource base. The marked differences in body size and foraging behavior have only a relatively small influence on the gross taxonomic makeup of the diets of black surfperch. INTRODUCTION that produce these patterns in field populations have rarely been investigated in detail, probably because of Many species of predators are characterized by the difficulty of delineating constraints and relating ontogenetic dietary shifts. Marked changes often occur them to diets of predators. Both the size of prey items between juvenile and adult stages.
    [Show full text]
  • Biological Productivity of Fish Associated with Offshore Oil and Gas Structures on the Pacific Ocs
    Pacific Outer Continental Shelf Region OCS Study BOEM 2014-030 BIOLOGICAL PRODUCTIVITY OF FISH ASSOCIATED WITH OFFSHORE OIL AND GAS STRUCTURES ON THE PACIFIC OCS OCS Study BOEM 2014-030 BIOLOGICAL PRODUCTIVITY OF FISH ASSOCIATED WITH OFFSHORE OIL AND GAS STRUCTURES ON THE PACIFIC OCS Authored by: Jeremy T. Claisse Daniel J. Pondella, II Milton Love Ann S. Bull Submitted by: Vantuna Research Group Occidental College Los Angeles, CA 90041 Prepared under: BOEM Cooperative Agreement M12AC00003 U.S. Department of Interior Bureau of Ocean Energy Management Camarillo Pacific OCS Region April 2014 Disclaimer This report had been reviewed by the Pacific Outer Continental Shelf Region, Bureau of Ocean Energy Management, U.S. Department of the Interior and approved for publication. The opinions, findings, conclusions, or recommendations in this report are those of the authors, and do not necessarily reflect the views and policies of the Bureau of Ocean Energy Management. Mention of trade names or commercial products does not constitute an endorsement or recommendation for use. This report has not been edited for conformity with Bureau of Ocean Energy Management editorial standards. Availability Available for viewing and in PDF at: www.oxy.edu/vantuna-research-group Bureau of Ocean Energy Management Pacific OCS Region 770 Paseo Camarillo Camarillo, CA 93010 805-389-7621 Daniel J. Pondella, II Vantuna Research Group Occidental College Los Angeles, CA 9004 323-259-2955 Suggested citation Claisse J.T., Pondella D.J., Love M., Bull A.S. (2014) Biological productivity of fish associated with offshore oil and gas structures on the Pacific OCS. Vantuna Research Group, Occidental College, Los Angeles, California.
    [Show full text]
  • Health Advisory and Safe Eating Guidelines for San Francisco Bay Fish and Shellfish
    HEALTH ADVISORY AND SAFE EATING GUIDELINES FOR SAN FRANCISCO BAY FISH AND SHELLFISH May 2011 Edmund G. Brown Jr. Governor State of California Linda S. Adams Acting Secretary for Environmental Protection California Environmental Protection Agency George V. Alexeeff, Ph.D. Acting Director Office of Environmental Health Hazard Assessment Health Advisory and Safe Eating Guidelines for San Francisco Bay Fish and Shellfish May 2011 Margy Gassel, Ph.D. Robert K. Brodberg, Ph.D. Susan A. Klasing, Ph.D. Lizette F. Cook, M.S. Pesticide and Environmental Toxicology Branch Office of Environmental Health Hazard Assessment California Environmental Protection Agency LIST OF CONTRIBUTORS Reviewer Lori Lim, Ph.D. Final Reviewers Anna Fan, Ph.D. David Siegel, Ph.D. Allan Hirsch ACKNOWLEDGMENTS OEHHA would like to acknowledge the San Francisco Bay Regional Monitoring Program (Steering Committee and Advisory Committee), the Surface Water Ambient Monitoring Program, Moss Landing Marine Laboratories, the San Francisco Bay Regional Water Quality Control Board, and the San Francisco Estuary Institute for developing and/or implementing fish and shellfish sampling and analysis. OEHHA would also like to acknowledge the California Department of Public Health, Environmental Health Investigations Branch, for their significant contributions on risk communication, including development of advisory graphics and management of the San Francisco Bay Fish Project. i Health Advisory and Safe Eating Guidelines for San Francisco Bay Fish & Shellfish FOREWORD This report provides guidelines for consumption of various fish and shellfish species taken from San Francisco Bay waters. This report provides an update of a previous interim state advisory for San Francisco Bay and Richmond Harbor and includes anadromous species that can also be caught in the Delta and the Sacramento and San Joaquin rivers.
    [Show full text]
  • Annotated Checklist of Fishes from Monterey Bay National Marine Sanctuary with Notes on Extralimital Species
    ISSN 1313-2970 (online) ISSN 1313-2989 (print) A peer-reviewed open-access journal ZooKeys 887 2019 Launched to accelerate biodiversity research Monterey Bay National Marine Sanctuary (MBNMS), a federal marine protected area located off central California, is host to a diverse fish fauna occupying a variety of habitats. The rich history of ichthyological research and surveys off central California provide a wealth of information to ANNOTATED CHECKLIST OF construct the first inventory of fishes occurring within MBNMS. FISHES FROM MONTEREY BAY Critical analyses of material from ichthyological collections at natural NATIONAL MARINE SANCTUARY history museums, the literature, and visual records were critical in creating WITH NOTES ON an annotated checklist of fishes occurring within MBNMS. The checklist EXTRALIMITAL SPECIES presented herein provides sources of basis, occurrence of fishes during cold- or warm-water events, records of historically occurring fishes, special BY places of occurrence (i.e., Davidson Seamount, Elkhorn Slough), introduced ERICA J. BURTON, RObeRT N. LEA species, and reference to original species descriptions from within MBNMS. Geographical errors in the literature based on misidentifications in the field are noted. This inventory provides evidence of occurrence for 507 fishes within MBNMS and an additional 18 species considered to be extralimital. This annotated checklist of fishes can be used by those interested in zoogeography, marine protected areas, ichthyology, regional natural history, and sanctuary management. ZooKeys 887 2019 http://zookeys.pensoft.net Special Issue ! http://zookeys.pensoft.net AUTHOR GUIDELINES Accepted Papers: Same as above, but are not limited to: Authors are kindly requested to sub- but ‘’In press’’ appears instead the • Zoobank (www.zoobank.org), mit their manuscript only through page numbers.
    [Show full text]