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Administrative Report No. 81-2

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Administrative Report No. 81-2 Southern California marine sport fishing: Private boat anglers' catch and effort in Los Angeles County, October-December, 1980 Item Type monograph Authors Wine, Vickie L. Publisher California Department of Fish and Game, Marine Resources Region Download date 25/09/2021 10:14:46 Link to Item http://hdl.handle.net/1834/17992 State of California The Resources Agency DEPARTPENT OF FISH AiiD G4.E J SOUTHF,RN CAIJFOPdIA IIARINE SPORT FISIIING : PRIVATE BOAT AVGLEIIS' CATCH EFFORT IN LOS ANGELES COUNTY, OCTOBER--DECEP.IRER, 1980 Vickie L. Wine MARINE RESOURCES Administrative Report No. 81-2 SOUTIIEKN CN,IFOKNIA FfARINE SPORT FISHING: PRIVATE BOAT ANGLERS' CATCII AND EFFORT IN LOS ANGELES COUNTY, OCTOBER-DECEIIISER, 19 80 -1/ by Vickie L. Wine -2 1 ABSTRACT The catch landed and effort expended by private-boat sport fishermen was studied 3.n Los Angeles County between October and December 1980, in order to determine the impact of one segment of the sport fishery on local marine resources. Fishenn.en returning from fishing trips were interviewed at launch ramps, hoists, and boat rental facilities. This report contains quantitative data and statistical estimates of total effort, total catch, catch of preferred species, and length frequencies for those species \:hose catches are regulated by minilnun size limits. An estimated 94,000 organisr?~were landed by 22,000 anglers and 1,200 divers. The inajor colnponen'is of the catch were Pacific mackerel, Seornber japonicus, 29,000 landed; whi te croaker, Genyonemus Zineatus, 17,500 landed; and Pacific bonito, Sardu chizieasis, 11,500 landed. These three species comprised two-thirds of the total catch. Anglers ' cornplj.ancc trith size limit regulations was variable. Nearly 80% of all measured bass, ParaZabrux spp., were legal size, but only 50% of the California halibut, ParaZichthys caZifornicz4s, were legal size. Divers showed much better compliance with the size limit regulations: 96% of all California spiny 3.obsters , PanzrZirus interrqt-us, were legal size. -11 Marine Resources Region, Adminis trati.ve Keport No. 81-2 I -21 Marine Rcsourccs Region, Gal-ifornia State Fisheries Laboratory, 350 Golden Shore, Long Beach, California 9C902. INTRODUCTION A project entitled the Southern California Independent Sport Fishing Survey was conducted by the Department from mid-1975 to mid-1978. During the follov?j.~lgtwo years lack of personnel caused temporary cessation of the survey. IIowever, in July 1960 this restraint was 1-emoved and the pro- ject geared up for proc11iction. The msjor purposes of the survey were 1) to estimate effort levels expended by anglers and divers fishing from private1.y owr:ed boats, 2) to estimate the magnitude and species compositiorl of the catch by these fishermen, and 3) to assess the degree of sport fisller~en'scompliance with size liniit regulations. The-re 2re five c&uafies covered in the survey: Sznta Earbara, Vei~tura, Los Angeles , Orange, and Szn Diego. Gowever, we began san~pl-ingLos b-nceles County in August 1980, and slowly expanded t!lc sampling frme to incl-ude otllcr c0untj.e~as add-i-tional personnel completed training as field samplers. lllc information presented in this report: is lirnited to Los Angeles County during October-Decernber 1300. A further limitation results from the fact that until late Novenbzr we did not have sufficient personnel to sample on weelcdays. Therefore the results listed here are for weekends in October and November, and for both weekends and wec?kdzys in December. The sampling plan consisted of a progrnm of random field sampliny: at selected launch ramps, hoists, and boat rental. facil.itics in Los Angeles , County. Sampling was conducted on all treeker~dsand holidays, and 011 ran- domly chosen weekdays in accordance with avai.l.able manpower. Field sampl.ers remained at the sample locations from 1OOO to 1800 llrs and an attempt was made to interview all returniag angl-ers and divcrs. Information on length of angling trip, nulnber of hours spent diving, number of fishing poles used, and number of people. angling or diving was gathered along with the identification and enumeration of all fishes, molluscs, crabs, and lobsters in possession (no data were requested about species caught but not kept). An attempt was made to measure all species with minimum size requirements. FESULTS AND DISCUSSION Data Samples During the October ]-December 31, 1980 quarter, four launch ramps, two boat hoists, and one rcntal. facility were sampled 70 times. 'Samplers in- terviewed 5,430 anglers and 288 divers who expended 34,122 angler-trip- hours 3/ and 373 diver-hours in the coastal arco -off Los Angrles County. These anglers landed 21,668 fishes of 95 species, arid 660 filleted fishcs whose species could not be determjned (Tables 1 and 2). Divers landed 1,018 fishes, molluscs, and crustaceans of Cc3 scecj-es. Effort / Angling and diving activity levels were much higher than usual for this time of year. In fact, the estimzted number of anglers was 15% higher than the estimate made for the sane 3-month period in 1975, and diving effort increased by 80%. One factor which may have contributed to the heavy effort levels was the very clear, calm, and warm weather which prevailed duri.ng ~ostof the quarter. An estimated 22,000 angler-days and 1,200 diver-days were expended during this period. (An angler- or diver-day is one angler or diver who fished for any amount of time on a given d&). ! -3/ The unit of angler effort is one hour of triv time per angler. Adjust- ments are made for those using more than one fishing pole concurrently. -4/ The unit of divcr effort is one hour snent underwater. Catch An estimated total of 94,000 fishes and other organisnls were landed : by anglers and divers in Los Angeles County (Tables 3 and 4). Althoup,li anglers landed a large variety of fishes, two-thirds OF the catch was corn- posed of three species: Pacific mackerel, Scorriber japo~zicus, which contribu- ted 33% of tlie estimated catch; wliite croaker, Genyo)zem~Zineatus, 20%; and Pacific bonito, Sarda chiliensis, 13%. Another major component of the catch (14%) was rockfish, Sebastes spp. At this time of year, favored game fishes such as bass, ParaZabrax spp.; California halibut, ParaZickthys caZifomicus; California barracuda, Sphyraena argentra; and white seabass, Atrackoscion nobizis; normally contribute only a small part of the catch. A Since much of the Los Angeles County coastli.ne was closed to abalone fishj-ng, most dfvers concentrated ttinir efforts on rock scallop, Hinnites mu~tirz4gosz!.sJan estir;latcci 1,203 landed; Califorrria spicy lobster, Pn-~zuzirus .inter~uptus, 950 landed; and Calif crnia sheephead, Semicossyplzus puZche17, 600 landed. Length Frequencies Examination of length frequency data (Tablc 5, Figures 1-3) shows that a substa~ltialnumber of sublegal-size fish appeared in the samplcd . catches. The three bass species averaged 23X sublegals, while 49% of all California halibut measured were less than the mininuni size. Although very few white seabass or California barracuda we3:e landed, nearly all were sublegal-size. Divers paid strict attention to the size limit on lobster: only 4% of all measured lobsters were sublegal. TABLE 1. List of Species Sampl.ed from Lcs Angeles County Private-Boats, October through December 1980. Scientif i.c name Coninon nane - No. sampled Fishes AZopias vulpinus common thresher Amphistichus argentez:~ barred surfperch Anisotremus chvidsonii sargo Amp Zopoma fimhricz sablefish Atherinops affinis topsmel-t Athelinopsis caZi f omziozsis j acksmelt Atractoscio~znobi lis white seabass CauZoZati Zzrs princeps ocean k7hitefish Chei Zotrevn satzlmm; black croaker firomis punctipinnis blaclcsrriith Citharichthy s sordidus Pacific sanddab C. stignaeus speclrled sanddab DamaZichthys vacca lpile surf perch Ikcaptertrs hypodus Mexican scad Bnbiotoca jacksoni black surfperch' E. ZateraZis striped surfperc:~ Eopsetta jordnni petrale so1.e GizZeor?zinus zyopterus spupfin shark Ge~zyotzemirs Zi-neatus wlli~ecroaker Gire Z la n7:3r*icans opaleye EaZi,nhoe~-~ssz!nio<nc t:~s rock wl:ass e Beterodontus .Trancisci horn shark Heterostichus ros-Lratzcs giant kelpfish H<ppoyZocsina s t-o~:ta: bimouth sole &perprosopon a~ge7ite:l;n walleye surfpcrch HSpsopsctta guttuZata d.iamond turbot Ryps z/ms cary i rainbow surfperch Ismus oqrinchus boni-to shark . < ElediaZwzn cuZiforniensis hal.fmo 011 Mer Zuccit~sproductus Pacific hake PIugiZ eephaZus striped mullet Mute Zus ca Zifoz-aicus gray smoothhound M. henlei brown snoothhou~~d %Ziobat.t.s cuZi fornica bat ray @7zio&7z e Zoisgatus lingcod OqjuZis caZi fbrnicn senorita ParaZabrez eZa LFirat?LY kelp bass P. maculatofusciatus spotted sand bass P. ncbuZifir barred sand bass PmaZichthys cazifor~n?:cus California halibu'i Phancrodon ficrcatus white surfpercf~ PZatiphi?zoidis trircricrta thornback PZeuronichthys coenosus C 0 turbot P. vertica lis hornc?yllr.ad turbot Prionacn gZauca blue sharlc RhacochiZus toxotes rubber1i.p surfperch Rhinoba Los prodzrctus shovclnosc guitarfish Sarda chiliensis Pacific bonito Scomb er juponi cus Yacif ic mackerel TABLE 1.-contd. Scientific name Common name No. samnled Scorpaena gz?ttata sculpin 555 Scorpacnichthys mu~rn~ratus cabczon 48 Sebastes .atrovirslzs kelp roc1:f ish 5 S. aur-iculut us brown rockf is11 4 7 S. babcocki redbanded roclcf ish 1 S. cmzatz4s gopher rockfish 22 S. cam'i~tus copper roclcfish 14 S. ch Zol~ostictus greenspot ted roclcfish 157 S. chrgsome Zas black and yellow rockfish 2 S. consteZZatus starry roclcf j.sh 68 S. &ZZii calico rockfish 19 S. dipZoproa splitnose rockfish 1 S. elongatus greenstriped rockfish 4 1 S. ensifcr swordspine roclcf ish 3 S. entoma Zas widor? rockf is11 1 S. fhvidus ,yellor\.tail roclcf ish 8 S. goodei . chilipepper 2 87 S. hopkinsi squarespot roclcfish 2 6 S. jorda?zi shortbe1l.y rockf i.:;h 1 S. Zevis cowcod 6 S.
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  • The Magazine of the Catalina Marine Society
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