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92 DEFINING FISHERIES A User's Glossary
Kenneth J. Roberts
Jerald W. Horst
John E. Roussel JosephA. Shephard
LOUISIANA SEA GRANT COLLFGF. ['ROGRAM Louisiana State Vniversity INTRODUCTION Theharvest of fish by commercialand recreationaltishermen is regulatedby federal LOUISIANA andstate agencies that develop plans by which SEA GRANT to managefishery resources.In so doing, College Program agenciesseek advice from fishermen and others involvedwith the fishing industry, Manage- ment plans include technical words and terms thatare difficult to understand,This glossary ~ LauISIAeA givesdefinitions that should help fishermen COOPERATIVE EXTENSION SERVICE understandthe scientific basis of management. EOIIISIENESTREE UNIVERSITT EGRIClj'LTUREI CENTER Thus, their comments and advice will be more usefulin planningand management. Kenneth J. Roberts, Putting fishery managementterms in Marine ResourceEconomics Specialist Louisiana Cooperative Extension Service nonscientificwords may makesome definitions Louisiana State University toosimple, but theauthors sought to getthe main idea acrosson each term. Some terms are Jerald W. Horst, Area Agent Fisheries! referredto by scientistsas letters or groupsof Louisiana Cooperative Extension Service letters acronymsland theseare listed at the end Louisiana StateUniversity of the publicationfor quick reference.The word fish is usedthroughout, and includesfinfish and John E, Roussel, Marine Fisheries Division shellfishspecies, A mail-inform is providedto Louisiana Department of Wildlife and Fisheries identify words and terms that need to be includedin a futureprinting. JosephA, Shephard, FisheriesResearch Division Louisiana Department of Wildlife and Fisheries
Amberjack on front cover courtesy of Dr. Bruce A Thompson, LSU Coastal Fisheries Institute
The researchthat resulted in this publication was A Seeanrll Abundance Seerelatitv abundanceand absolute abundance. AdvisoryPanel AP! A groupof people appointedby a fisheriesmanagement agency to review information and give advice. Members ! July 1991 are usually not scientists, but most are familiar Louisiana SeaGrant College Program withthe fishing industry or a particularfishery. Louisiana StateUniversity Baton Rouge, Louisiana 70803-7507 Age Frequencyor Age Structure A breakdown Billfishes The familv of fish that includes of the different agegroups of a kind of fish in a marlins,sailfish and spearfish, population or»ample. BiomassThe total weight or volume of a Allocation Distribution of the opportunity to speciesin a given area. fish amonguser groups or individual». The share a user group gets is»omc time» based on BonyFishes Fish that havea bonyskeleton and hi»toric harvc»t amounts. belongto theclass O»teichthyc». Basically, this is all fishexcept for sharks,rays, skates, hagfi»h Allowable Biological Catch ABC! A term used and lampreys, by a managementagency which ref>r» to the rangeof allowablecatch for a speciesor species Bycatch The harvest of Fish or shellfish other group. Jt i» sct eachyear by a scientificgroup thanthe species for whichthe fishing year was createdby the managementagency, Thc agency set. Examplesare blue crabs caught in shrimp then takes the ABC estimate and»ct» the annual trawlsor sharkscaught on a tunalongline. total >tllo>oaf>lccate/> TAC!. Bycatch is also often called i»cia»nta!catcl>. Somebycatch i» kept for sale. AnadromousFish that migratefrom saltwater to fresh water to spav n. Angler A person catching fish or shellfish with C no intent to sc11.This includespcopje rcl a»ing the catch. C/E Seecate/> l>cr»»it of effort. AnnualMortality A! Thepercentage of fish CPUE Seec»tel> y<'r t>»it of >.'ffnrt, dying in oneyear due to both fishing and CatadromousFish that migratefrom fresh natural causes. water to»altwaterto spawn. Aquaculture The raising of fish or shellfish CatchThe total number or poundageof fish under somecontrols, Ponds,pens, tanks, or capturedfrom an areaover someperiod of time. other containers mav be used. Feed is often Thisinc]udcs fish thatare caught but releasedor used. A hatcheryis alsoaquaculture but thc fish discardedinstead of beinglanded. Thecatch are released before harvest size is reached. may take place in an area different from where ArtisanalFishery Commercial fishing using the fish are landed. /Mote:Catch, harvest, and traditional or small scaleyear and boats. landings are different. Availability Describeswhether a certain kind CatchCurve A breakdownof differentage ot'fish of a certainsize can be caughtby a type groupsof fish, showingthe decreasein numbers of gear in an area. of fish caught as the fish becomeolder and fess numerous or less available. Catch curves are often usedto estimatetotal mortality, Catch Per Unit of Effort CPUE; C/E! Th» numberof fish caughtby an amountof effort, BagLimit Thenumber and/or sizeof a species Typically,effort is a combinationof geartype, thata personcan legally take in a dayor trip. gearsize, and lengthof time gearis used. Catch This may or may not be the sameas a possession pcr unit of effort is often used as a measurement limit. of relativeabundance for a particularfish. Benthic Refers to animal» and fish that live on CatchStream The catch statistics for a kind or or in the water bottom. stockof fish over a periodof time, Catchability Coefficient q! The part of a stock Management Act of 1976as amended created that is caught by a defined unit of effort. the regionalcouncils. For example,the Gulf of MexicoFishery Management Council develops Charter Boat A boat availablefor hire, normally fisherypolicies designed to managethose by a group of people for a short period of time. species most often found in Gulf federal waters. A charter boat is usually hired by anglers. CrustaceanA group of freshwater and saltwa- CoastalMigratory PelagicFishes Several ter animalshaving no backbone,with jointed speciesof fish that live in open waters near the legs and a hard shell made of chitin. Includes coast, grouped together by the Gulf of Mexico shrimp, crabs,lobsters, and crayfish. FisheryManagement Council and South Atlan- tic Fishery Management Council for manage- Cumulative FrequencyDistribution A chart ment purposes,This includesking and Spanish showing the number of animals that fall into mackerel, cobia, dolphin, and little tunny. certain categories,for example, the number of fish caughtthat are lessthan onepound, less Cohort A group of fish spawned during a given than threepounds, and more than threepounds, period, usually within a year. A cumulativefrequency distribution showsthe numberin a category,plus the numberin Cohort Analysis Seevirtual populationanalysis previous ca tegories. Commercial Fishery A term related to the whole processof catching and marketing fish and shellfish for sale. Common Property Resource A term that Demersal Describes fish and animals that live indicates a resourceowned by the public. It can near water bottoms. Examples are flounder and be fish in public waters, trees on public land, croaker. and the air. The government regulates the use of a common property resource to ensure its DirectedFishery Fishing that is directedat a future benefits. certainspecies or group of species.This applies to both sport fishing and commercialfishing. CompensatoryGrowth An increasein growth rate shownby fish when their populations fall Disappearance Z'! Measures the rate of decline below certain levels. This may be caused by less in numbersof fish caughtas fish becomeless competition for food and living space. numerousor lessavailable, Disappearanceis most often calculated from catch curves. CompensatorySurvival A decreasein the rate of natural mortality natural deaths! that some fish show when their populations fall below a certain level. This may be caused by less competition for food and living space. EEZ See exclusive economic zone. Condition A rnathernatical measurement of the EIS Seeenvironmental impact statement. degree of plumpness or general health of a fish or group of fish. ESO Seeeconomics and statistics office, ConfidenceInterval The probability, based on EconomicEfficiency In commercialfishing, statistics, that a number will be between an thepoint at whichthe addedcost of producing upper and lower limit. a unit of fish is equalto what buyerspay. Producingfewer fish wouldbring the costlower Council Indicates a regional fishery manage- than what buyersare paying. Producingmore ment group. The Fishery Conservationand fish would raise the cost higher than what Ex-vessel Refers to activities that occur when a buyers are paying. Fish harvesting at the point commercial fishing boat lands or unloads a ot economic efficiency produces the maximum catch. For example, the price received by a economic yield. See»zaxi»ru»recorrorrric yield and captain for the catch is an exvesselprice. economic rerrt. Exclusive Economic Zone EEZ! All waters Economic Overfishing A level of fish harvest- from the seaward boundary of coastal statesto ing that is higher than that of economic effi- 200 nautical miles. This was formerly called the ciency; harvesting more fish than necessaryto FistteryConservatiorz 7orze, have maximum profits for the fishery. Economic Rent The total amount of profit that could be earned from a fishery owned by an individual. Individual ownership maximizes profit, but an open entry policy usually results F Secfrshirrg mortality, in so many fishermen that profit higher than Fmax The level of fishing mortality rate of opportunity cost is zero. See r»axirnur» ceo»or»ic removal by fishing! that produces the greatest yield. yield from the fishery. Economics and Statistics Office ESO! A unit FCMA SeeFishers~ Corrservatiorr arrd Marrage»rerrt of the National Marine Fisheries Service NMFS! Act, found in the regional director's off'ice. This unit does some of the analysis required for develop- FCZ Seefisherrt conservation zone. ing fishery policy and management p]ans. FMC- Seefishery marragernerrtcourrcil. Effort The amount of time and fishing power used to harvest fish. Fishing power includes FMP Seefishery marzagr.'ment plan. gear size, boat size, and horsepower. Fecundity A measurement of the egg-produc- Elasmobranch Describesa group of fish with- ing ability of a fish. Fecundity may change with out a hard bony skeleton, including sharks, the age and size of the fish. skates,and rays. Fishery Conservation and Management Act Electrophoresis A method of determining the FCMA! A federal law that created the regional genetic differences or similarities between councils and i' the federal government's basis individual fish or groups of fish by using tissue for fisheries management in the EEZ. Also samples. known as the Magnuson Act after a chief sponsor, Senator Warren Magnuson of Washing- Environmental Impact Statement EIS! An ton. analysis of the expected impacts of a fisheries management plan or some other proposed Fishery All the activitiesinvolved in catchinga action! on the environment. speciesof fish or group of species. Escapement The percentageof fish in a particu- Fishery Conservation Zone FCZ! The area lar fishery that escapefrom an inshore habitat from the seaward limit of state waters out to 200 and move offshore, where they eventually miles. The term is used less often now than the spawn. current term, exclusive econorrlic zone. Euryhaline Fish that live in a wide range of Fishery Dependent Data Data collected on a salinities. fish or fishery from sport fishermen, commercial fishermen, and seafood dealers, Fishery Independent Data Data collected on a Growth Model A mathematical formula that fish by scientists who catch the fish themselves, describes the increasein length or weight of an rather than depending on fishermen and sea- individual fish with time. food dealers, Growth Overfishing When fishing pressure on Fishery Management Council FMC! See smaller fish is too heavy to allow the fishery to co>> neil produce its maximum poundage, Growth overfishing, by itself, does not affect the ability FisheryManagement Plan FMP! A plan to of a fish population to replace itself. achieve specified management goals for a fishery. It includesdata, analyses,and manage- ment measuresfor a fishery. Fishing Effort Seeeffort. Harvest The total number or poundage of fish Fishing Mortality F! A measurement of the caught and kept Froman area over a period of rateof removalof fish from a populationby time. Note that landings, catch, and harvest are fishing. Fishing mortality can be reported as different. either a>rrrrralor instantaneorrs.Annual mortality is the percentageof fish dying in one year. Head Boat A fishing boat that takes recreational Instantaneous is that percentageof fish dying at fishermen out Fora Feeper person. Different any one time, The acceptablerates of fishing from a charterboat in that people on a head boat mortality may vary from speciesto species. pay individual fees as opposed to renting the boat. Fork Length The length of a fish as measured from the tip of its snout to the fork in the tail. Histogram A methodof showing data in a graph. The data appear as bars running up and down vertical! or sideways horizontal!. GLM Seegeneral linear model. GSI See go>roso>>Mtrc index. ITQ Seei»dividrral tra>rsferablerlrrota. General Linear Model GLM! A mathematical Incidental Catch See1>ycrr tel>. formula that relates one biological factor to another. Once a mathematical relationship is Individual Transferable Quota A form of established,scientists use the formula to predict limrted entry that gives private property rights one factor over another, to fishermen, by assigning a fixed share of the catch to each fisherman, Gonosomatic Index GSI! The ratio of the weight of a fish's eggs or sperm to its body Industrial Fishery A fishery for speciesnot weight, This is used to determine the spawning directly used for human food. An example is time of a speciesof fish. menhaden. Groundfish A speciesor group of fish that lives InstantaneousMortality Seefrshi>re >rrortalitrt, most of its life on or near the sea bottom. natrrral>nortalitrt, and total vrrortality. Growth Usually an indiviclual fish's increasein Intrinsic Rate of Increase z! The change in the lengthor weight with time. Also may refer to amount of harvestable stock. It is estimated by the increasein numbers of fish in a population recruitment increasesplus growth minus natural with time, mortality. 8 Isopleth A methodof showing data on a graph MagnuSOn Act See FzSheryCozzserz~ation and which is commonly used r'ndetermining yield- M azzage»zezztAet. per-recruit. Mariculture The raising of marine finfish or shellfish under some controls. Ponds, pens, tanks, or other containers may be used, and feed is often used. A hatchery is also mariculture but Juvenile A young fish or animal that has not the fish are released before harvest size is reached sexual maturity. reached. Marine Mammal Animals that live in marine waters and breathe air directly. Theseinclude porpoises, whales, and seals. Landings The number or poundage of fish Marine RecreationalFishery StatisticsSurvey unloaded at a dock by commercial fishermen or MRFSS! An annual survey by the National brought to shore by recreational fishermen for Marine Fisheries Service KMFS! to estimate the personal use. Landings are reported at the number, catch, and effort of recreational fisher- points at which fish are brought to shore. Note men. lt serves as a basisfor many parts of that landings, catch, and harvest are different. fisheries management plans. Latent Species A species of fish that has the Mark-Recapture The tagging and releasing of potential to support a directed fishery. fish to be recaptured later in their lif» cycles. Thesestudies are used to study fish movement, Length Frequency A breakdown of the differ- migration, mortality, and growth, and to esti- ent lengths of a kind of fish in a population or mate population size. sample. Maximum Economic Yield MEY! This is the Length-WeightRelationship Mathematical total amount of profit that could be earned from formula of the weight of a fish in terms of its a fishery if it were owned by an individual. An length. When only one is known, the scientist open entry policy usually results in so many can use this formula to determine the other. fishermen that profit higher than opportunity cost is zero. See ecz>nz>nzicrent. Limited Entry A program that changesa common property resource like fish into private Maximum Sustainable Yield MSY! The property for individual fishermen, License largest average catch that can be taken continu- limitation and the individual transferable quota ously sustained! from a stock under average lTQ! are two forms of limited entry. environmental conditions. This is often used as a managementgoal. Mean Another word for th» average of a setof numbers. Simply add up the individual num- mm See millimeter. bers and then divide by the number of items. M See natural znz>rtality. Meristics A series of measurements on a fish, suchas scalecounts, spine counts, or fin ray MEY SeemaXiznZZ»z eCO>zOrnie yield. counts, which are used to separatedifferent populations or racesof fish. MRFSS Seemarine recreational fishery statistics suvoe Jl. Millimeter mm! Metric measurement of length that is 1! 25 of an inch long. MSY See>naxinnzm sustainable yield. 10 Model ln Fisheriesscience, a description of 0 something that cannot be directly observed. Often a set of equations and data used to make OY See@pain»»n >iield. estimates. Open AccessFishery A fishery in which any Mollusk A group of freshwater and saltwater person can participate at any time. Almost all animals with no skeleton and usuallyone or two fisheriesin federalwaters are opento anyone hard shells made of calcium carbonate. Includes with a fishing boat. the oyster, clam, mussel, snail, conch, scallop, squid, and octopus. Opportunity Cost An amount a fisherman could ea.rn for his time and investment in Morphometrics The physical features of fish, another businessor occupation. for example, coloration. Morphometric differ- encesare sometimes used to identify separate Optimum Yield OY! The harvest level for a speciesthat achieves the greatest overall ben- fish populations. efits, including economic,social, and biological Multiplier A number used to multiply a dollar considerations. Optimum yield is different from amount to get an estimate of economic impact. >naxi>n>>n>sustainable >l>eldin that MSY considers It is a way of identifying impacts beyond the only the biology of the species. The term original expenditure. It can also be used with includes both commercial and sport yields. respect to income and employment. Overfishing Harvestingat a rategreater than that which will meetthe managementgoal. N NMFS See %ah'onal Marine Fisheries Scrv>ce. National Marine Fisheries Service NMFS! A Panel Seeaduisor>l panel. federal agency with scientists,research vessels, and a data collection system responsible for Pelagic Refers to fish and animals that live in managing the nation's saltwater fish. It oversees the open sea,away from the sea bottom. the actions of the Councils under the Fishery Conservation and Management Act. Population Fish of the same speciesinhabiting a.specified area grouped together for manage- National Standards The Fishery Conservation ment purposes. and Management Act requires that a fishery management plan and its regulations meet Population Dynamics The study of fish popula- seven standards. Thc seven standards were tions and how fishing mortality, growth, recruit- developed to identify the nation's interest in fish ment, and natural mortality affect them. management. Possession Limit The number and/or size of a Natural Mortality M! A measurement of the speciesthat a personcan legally haveat any one rate of removal of fish from a population from time. Refers to commercial and recreational natural causes. Natural mortality can be re- fishermen.A possessionlimit generallydoes ported as either annual or instantana»us.Annual not apply to the wholesale market level and mortality is the percentageof fish dying in one beyond. year. Instantaneous is the percentageof fish PredatorA speciesthat feedson other species. dying at any one time. The rates of natural Thespecies being eaten is the prey. mortality may vary from speciesto species. Predator-Prey-RelationshipThe interaction Nursery The part of a fish's or animal's habitat between a species predator! that eats another where the young grow up. 12 13 species prey!. The stagesof each species'life RecruitmentOverfishing When fishingpres- cycle and the degree of interaction are important sure is too heavy to allow a fish population to factors. replace itself, Prey A speciesbeing fed upon by other species. ReefFish Complex A termused by the Gulf of The specieseating the other is the predator, Mexico Fishery Management Council to describe the many speciesof fish found around natural Primary Productivity A measurement of plant reefs,artificial reefs,ledges, and mud lumps, production that is the start of the food chain. Snappers,groupers, and tilefish are examples. Much primary productivity in marine or aquatic systems is made up of phytoplankton, which are RegionalDirector RD! The personin chargeof tiny on»- celled algae that float freely in th» the National Marine Fisheries Service NMFS! water. for a givenregion. Th»office of the Regiorral Director for the South Atlantic and Gulf of PulseFishing Harv»sting a stock of fish, then Mexico statesis located in St, Petersburg, moving on to other stocks or waiting until the Florida. original stock recovers. RegressionAnalysis A statistical method that Put and Take Fishery The placing of hatchery- estimates any trend that might exist among raised fish in waters to be caught by fishermen. important factors. An example in fisheries There are few marine fish»ries that fit this management is the link between catch and other description. Most casesare found in inland factorslike fishing effortand rrafuralrrrortality. streams and lakes. RegulatoryImpact Review RIR! The part of a federalfishery managementplan that describes q See catchalrilittjcoefficierrt, the impacts resulting from the plan. Quota The maximum number of fish that can RelativeAbundance An index of fish popula- be legally landed in a time period. It can apply tion abundance used to compare fish popula- to the total fishery or an individual fisherman' s tions from year to year. This docs not measure share under an ITQ system, Could also include the actualnumbers of fish, but showschanges in reference to size of fish, the population over time. Rent S»e economic rent. R RD Seeregional director. RIR Seeregulatory irrr pact reviezzz s See survival rate. RecreationalFishery Harvesting fish for personal use, fun, and challenge. Recreational SAFE Seestock assessrnerrt arrd fishery evaluatiorr fishing does not include sale of catch. report. Recruit An individual fish that has moved into SEFC See Southeast Fisheries Center. a certain class,such as the spawning class or SPR Seespau~nirrg poterttia! ratio. fishing-size class, SSBR Seeslrawr~irtg stock bi~rrnass per recruit. Recruitment A measure of the number of fish that enter a classduring some time period, such SSC Seescientific a»d statisticaladvisory con»rrit- as the spawning classor fishing-size class. lee, 14 15 Scattergram A graph that shows how factors management results in more income fishing, it is relate to each other. This is visual, not statistical, important to know how the income is distrib- and is used when it is necessaryto compare two uted between small and large boats or part-time factors, like fish age and size . and full-time fishermen. Scientific Assessment Panel A group of Southeast FisheriesCenter SEFC! Headquar- biologists,economists, and sociologistsput ters for the scientific staff of the National Marine together by a federal fishery management Fisheries Service NMFS! in the South Atlantic council to review scientific data on the condition and Gulf of Mexico states. The center is located of a stock of fish and the interests of the fisher- in Miami, Florida, with smaller laboratories at men and seafood processorswho use the stock. severa I other locations. Panel members generally come from universities and state and federal fisheries agencies. Spawner-Recruit Relationship The concept that the number of young fish recruits! entering Scientific and StatisticalAdvisory Committee a popiilationis related to the number of parent SSC! A group of scientific and technical people fish lspawners!. giving advice to a council. Spawning Potential Ratio SPR! The ratio of Secretarial Management Plan A term used to the egg-producing ability of all the mature fish describe a plan developed by the Secretaryof in a fished stock to the egg-producing ability the U,S. Department of Commerce in response that would exist if the stock were unfished. An to an emergency or a council's failure to act. SPRpercentage is sometimes used as a target for managing or rebuilding fisheries stocks. Selectivity Te ability of a type of gear to catch a certain size or kind of fish, compared with its Spawning Stock Biomass The total weight of ability to catch other sizes or kinds. the fish in a stock that are old enough to spawn. Simulation An analysis that shows the produc- Spawning Stock Biomass Per Recruit SSBR! tion and harvest of fish using a group of The ratio of the total weight of mature fish in a equations to represent the fishery. It can be fished stock to the total weight that would exist used to predict events in the fishery if certain if the stock were unfished. Frequently, these factors changed. percentagesare used as target figures for managing or rebuilding fisheries stocks. The Size Distribution A breakdown of the number percentagesmay change for different species. of fish of various sizes in a sampleor catch. The sizes can be in length or weight. This is most Species A group of similar fish that can freely often shown on a chart, interbreed. Slot Limit A limit on the size of fish that may Sport Fishery Seerecreafionat fishery. be kept. Allows a harvester to keep fish under a minimum size and over a maximum size, but Standard Length The length of a fish as mea- not those in between the minimum and maxi- sured from the tip of the snout to the hidden mum. baseof the tail fin rays. Social Impacts The changesin people, families, Standing Stock See biomass. and communities resulting from a fishery management decision. Stock A grouping of fish usually based on genetic relationship, geographic distribution, Socioeconomics A word used to identify the and movement patterns. importance of factors other than biology in Stock Assessment Group A group of scientists, fishery management decisions. For example, if skilled in the study of fish population dynamics 16 17 put together by a federal fishery management extend farther than three miles from the shore. council to review the scientific data on the condition of a stock of fish. The scientists Total Allowable Catch TAC! Th» annual generally come from universities and state and recommend»d catch for a speciesor species federal fisheries agencies. group. The regional council sets the TAC from the range of the allowable biological catch, Stock Assessment and Fishery Evaluation Report SAFE! A report that provides a sum- Total Length Thc length of a Fishas measured mary of the most recent biological condition of a from the tip of the snout to the tip of the tail. stock of fish and th» ccont>mic and social Total Mortality Z! A me >surement of the rat» condition of thc recreational fishermen, com- of rem~>valof fish trom a population by both mercial fishermen, and seaf'oodprocessors who fishing and natural causes.Total mortality can use the fish. The report provides information to be reported as either annual or instantaneous. the federal fishery management councils for Annual mortalitv is the percentageof fish d ving determining harvest levels. in on» year. Instantaneous mortalitv is that Stock-RecruitRelationship Seesparer> er-rccrr ri t percentageof fish dying at any one time. The relatio»sl r rt>. rate of total mortalitv may vary from speciesto sp»crcs. StressedArea An area rn which thcrc is special concern regarding harvest, perhaps becausethe Trip Interview Program TIP! A management fish are small or because harvesters arc in agency'sface-to-face interviewing of commercial cr>nflict. fishermen to collect data. Length of trip, loca- tion, catch, and other data arc collected. Surplus Production Model A model that estimates the catch in a given year and the change in stock size. The stock size could increaseor decreasedepending on new recruits and natural mortality. A surplus producition Underutilized Species A speciesof fish that has model estimates the natural increase in fish potential for large additional harvest. weight or the sustainable yield. Unit Stock A population of fish grouped Survival Rate s! The number of fish alive after together for assessmentpurposes which may or a specified time, divided bv the r>umberalive at may not include all the fish in a stock, the beginning of the period, VPA See 18 19 a cohort. It also provides an estimate of the M Natural Mortality number of fish in a cohort at various ages. MEY Maximum Fconomic Yield MRFSS Marine R ecrea tiona! Fi sherv Statistics Survey MSY Maximum Sustainable Yield NMFS Na tional tvfarr'ne Fisheries Service Year-Class The fish spawned and hatched in a. OY Optimum Yield given year, a "generation" of fish, q Catch Z' Seedisalrlrearancc. ~ ~ ~ ~ ~ t ~ ~ ~ ~ ~ ~ ~ 0 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ACRONYMS SUGGESTIONS Use the form below to send suggestionsfor A Annual Mortality other v ords or terms that should be defined in ABC Allowable Biological Catch later editions of this glossary. AP Advisory I'anel C/E Catch Per Unit of Effort CPUE Catch Per Unit of Effort EEZ Exclusive Economic Zone EIS Environmental Impact Statement ESO Economics and Statistics Office F Fishing Mortality FCMA Fishery Conservation and Management Act FCZ Fishery Conservation Zone FMC Fishery Management Council FMP Fis heryManagemen t I'la n GLM General Linear Model Send to: Sea Gr 20 21