TurkJZool 28(2004)321-327 ©TÜB‹TAK Malacostraca(Crustacea)FaunaofYuvarlakStream (Köyce¤iz-Mu¤la) MuratÖZBEK,SüleymanBALIK,M.RuflenUSTAO⁄LU EgeUniversity,FisheriesFaculty,HydrobiologyDepartment,35100,Bornova,‹zmir-TURKEY Received:28.05.2003 Abstract: ThisstudyaimedtocontributetotheknowledgeofTurkishMalacostracafaunabydeterminingtheMalacostraca (Crustacea)faunaofYuvarlakStream.Monthlysamplingwasperformedat10stationsalongthestreambetweenMay2001and April2002. Eleventaxaweredetermined;ofthese,5( Gammarusbalcanicus,Gammaruslongipedis,Echinogammarusantalyae,Corophium orientale and Orchestiaplatensis )belongtoAmphipoda,3( Palaemonetesantennarius,Atyaephyradesmarestiiorientalis and Potamonpotamios )toDecapoda,2( Lekanesphaerahookeri and Cyathuracarinata )toIsopodaand1( Diamysismesohalobia mesohalobia)toMysidacea. KeyWords: Malacostraca,Fauna,YuvarlakStream,Köyce¤iz,Turkey Yuvarlakçay(Köyce¤iz-Mu¤la)’›nMalacostraca(Crustacea)Faunas› Özet: Buçal›flmada,Yuvarlakçay’›nMalacostraca(Crustacea)faunas›n›ntespitivebusayedeTürkiye’ninMalacostracafaunas› hakk›ndakibilgilerekatk›dabulunulmas›amaçlanm›flt›r;bubak›mdan,May›s2001-Nisan2002tarihleriaras›nda,10istasyondan ayl›körneklemeyap›lm›flt›r. Çal›flmasonucunda,toplam11taksontespitedilmiflolup,bunlardan5’i( Gammarusbalcanicus,Gammaruslongipedis, Echinogammarusantalyae,Corophiumorientale,Orchestiaplatensis )Amphipoda,3’ü( Palaemonetesantennarius,Atyaephyra desmarestiiorientalis,Potamonpotamios )Decapoda,2’si( Lekanesphaerahookeri,Cyathuracarinata )Isopodave1’i( Diamysis mesohalobiamesohalobia)deMysidacea’yedahildir. AnahtarSözcükler: Malacostraca,Fauna,Yuvarlakçay,Köyce¤iz,Türkiye Introduction sincethebeginningofthe20thcentury(Vavra,1905; TheMalacostracacompriseabout28,000specieswith Coifman,1938etc.),thefirststudybynativescientists abroaddisparityinmorphology,anatomy,embryology, concerningthetaxonomyoffreshwaterMalacostraca behaviourandecology(RichterandScholtz,2001).Its specieswasbyGeldiayandKocatafl(1970),which members,whichareprimarilymarinebutalsooccupy concernedthe Astacus populationsofTurkish somefreshwater,terrestrialandgroundwaterhabitats, freshwaters.Sevenyearslater,thesameauthors areextremelydiverse. publishedastudyonthefreshwatercrabsofTurkish freshwaters(GeldiayandKocatafl,1977). InTurkey,freshwaterMalacostracanshavereceived muchlessattentionfromnativescientiststhanother Thereareafewstudiesaboutthetaxonomyof freshwateranimalssuchasfishandsomeother MalacostracaspeciesofYuvarlakStreamanditsvicinity. invertebrates.Somespecies,whichhaveeconomicvalue ThefirstonewasreportedbyKazancıetal.(1992)on (e.g.Astacusleptodactylus),havebeenstudiedwellwhile thelimnologyofLakeKöyce¤iz.Inapartofthisstudy, othershavebeenalmostuntouched. thebenthicfaunaofLakeKöyce¤izandsurrounding freshwaterswerereportedand Palaemonetes Althoughmanyforeignscientistshavestudiedthe antennarius,Heterotanaisguerneyi,Sphaeroma taxonomyoffreshwaterMalacostracaspeciesinTurkey 321 Malacostraca(Crustacea)FaunaofYuvarlakStream(Köyce¤iz-Mu¤la) serratum,Gammarus sp.and Echinogammarussp.were MaterialsandMethods givenastheMalacostracafaunaofthestudyarea. Malacostracaspecimenswerecollectedby500µmesh Thesecondone,byKazancıandDügel(2000),wason hand-netandanEkmanBirgegrab(atthelast2stations) thewaterqualityofYuvarlakStream.Ingeneral,this at10stations(Figure1;Table1)monthlybetweenMay studyfocusedonthephysico-chemicalcharacteristicsof 2001andApril2002. thestreamanddeterminingthewaterqualitybyusing Collectedspecimenswerefixedfirstlyin4%formalin someindicesthatconsidertheinvertebratefaunaofthe solutioninthefieldandthenpreservedin70%ethanolin stream.Inthisrespect,allthedeterminedtaxawere thelaboratoryanddepositedinthecollectionofEge givenatthegenericlevel,namely Palaemonetessp.and UniversityFacultyofFisheries. Gammarussp. Someofthepapersusedinthedeterminationof Barlasetal.(2000)alsoinvestigatedYuvarlakStream sampledspecimensareasfollows:forAmphipods: intermsofphysico-chemicalandbiologicalaspects. Karaman(1971),andKaramanandPinkster(1987);for SimilarindicestothoseinKazancıandDügel(2000)were Isopods:Lejuez(1966)andKırkım(2000);forDecapods: usedtodeterminethewaterqualityofthestream.Only Holthius(1961),GeldiayandKocatafl(1970,1977),and Gammarus sp. and Palaemonetes sp.weregivenas Brandisetal.(2000);andforMysids:Arianiand membersoftheMalacostracafaunaofYuvarlakStream. Wittmann(2000). ThelateststudyconcerningtheMalacostracafaunaof YuvarlakStreamwasbyÖzbeketal.(2003).Inthis study,theauthorsreportedaboutthevariabilityand ResultsandDiscussion ecologyof Echinogammarusantalyae ,whichwas Eleventaxaweredeterminedinthisstudy(Figures2 recordedfromTurkishfreshwatersforthesecondtime. and3).Thetaxonomicalpositionsanddistributionsofthe N KÖYCE⁄‹Z 1 2 3 7 BEYOBASI 10 9 6 4 8 5 0km.2 SAMPLINGLOCALITIES Fig.1.Samplingstations. 322 M.ÖZBEK,S.BALIK,M.R.USTAO⁄LU Table1.Samplingstationsandtheircoordinates. Stat.No. Locality Coordinates 1 Spring 36º56’50’’N 28º48’37’’E 2 BeforeTroutfarm 36º56’19’’N 28º48’37’’E 3 AfterTroutfarm 36º54’48’’N 28º47’53’’E 4 Karabo¤sakStream 36º54’39’’N 28º47’47’’E 5 Beyobas›village 36º54’21’’N 28º45’30’’E 6 BeforeNas›fDedeStream 36º54’22’’N 28º43’30’’E 7 Nas›fDedeStream 36º54’34’’N 28º42’18’’E 8 AfterNas›fDedeStream+RiverMouth 36º54’39’’N 28º41’31’’E 9 LakeKöyce¤iz+BeyondtheRiverMouth 36º54’36’’N 28º41’18’’E 10 LakeKöyce¤iz 36º54’38’’N 28º41’07’’E determinedtaxaaccordingtothestationsareshownin inthepresentstudy.Wethoughtbothofthelocalities Table2.Betweenthefourthandsixthstationsno wereconnectedtoeachotherviagroundwatersystems Malacostracaspecimenswerefound.Amongallofthe throughtheTaurusMountainsregionbecauseofthe stations,therichestwastheninthone,whichwasjust karsticconstructionofthisarea. beyondthemouthofthestream(Table2). ThefindingofEchinogammarusantalyae specimensin Gammarusbalcanicus,awellknownspeciesfromthe theseventhtotenthstationswasinteresting,becauseof springsandcoolrunningwaters,foundinthefirstand itsoriginaldistributionareagivenbyKaraman(1971). secondstationsagreeableintermsofecological Thisendemicspecieshadbeenreportedonly1locality characteristics.Weencounteredthespeciesalmostinall (Kırkgöz,Antalya)inAnatoliaandwasrecentlyreported monthsduringthestudyperiod,abundantlyatthefirst2 fromYuvarlakçayforthesecondtime(Özbeketal., stationsandrarelyatthethird(Table2).Accompanying 2003). G.balcanicus was Gammaruslongipedis ,whichisan Inbothgrabandhandnetsamplings,whichwere endemicAmphipodspeciesandreportedfromonlyafew performedinthelakeandattheshore,wefoundno O. localitiesinAnatoliasofar(KaramanandPinkster, platensis specimens.Theywereonlycollectedfromunder 1987).Theauthorsdescribed G.longipedis asacave aquaticplantmasses,whichwerepiledupbywavesatthe species,butwefoundthespecimensatthesourceof shoreofthelake. YuvarlakStream.Inthisrespect,wethoughtthat G. longipedis canliveinaquiferandspringwaters.Anold C.orientale wasfoundonlyattheninthandtenth recordofthisspeciesindicatesthedistributionareaas stations,L.hookeri atseventh,ninthandtenthonesand southernAnatolia(KaramanandPinkster,1987)andwe C.carinata onlyattheninthone(Table2).All3species expandeditsoriginaldistributionareatowardsthewest aredistributedmainlyinthesea,butalsopenetrateto brackishwatersystemssuchasLakeKöyce¤iz. 323 Malacostraca(Crustacea)FaunaofYuvarlakStream(Köyce¤iz-Mu¤la) Figure2.Picturesofdeterminedtaxa( 1:G.balcanicus,2:G.longipedis,3:E.antalyae,4:C.orientale,5:O.platensis,6:L.hookeri ). Thepalaemonidshrimp,P.antennarius,wasfoundat Becauseofthenarrowandslenderrostrum,which thelowerreachesandmouthofthestream.Inparticular, hasatipcurvedupwards,andtheshapeoftheendopod attheseventhstationandatthemouthofthestream, ofthefirstmalepleopod,wedecidedthattheAtyiid wheredenseaquaticplantswereobserved,many specimensdifferfromthenominalsubspeciesandbelong specimensweresampledtogetherwithAtyiidshrimpand to A.desmarestiiorientalis ,asdescribedbyHolthius E.antalyae specimens. (1961). 324 M.ÖZBEK,S.BALIK,M.R.USTAO⁄LU Figure3. Picturesofdeterminedtaxa(1:C.carinata,2:P.antennarius,3:A.desmarestiiorientalis,4:P.potamios,5:P.potamios(frontal view),6:D.mesohalobiamesohalobia). Theonlymaturecrabspecimen, P.potamios,wasa seventhstations,butitishardtodeterminethespecific maleandwassampledatthesecondstation.Infact,we levelfromimmatureandfemalespecimens.Therefore sampledmanyyoungcrabspecimensatthefourthand theywererejected. 325 Malacostraca(Crustacea)FaunaofYuvarlakStream(Köyce¤iz-Mu¤la) Table2.Distributionofthetaxaaccordingtothestationsandvalueofsampledspecimens( ∆:afew,●:more,■:many). STATIONS TAXA 12345678910 AMPHIPODA Gammarusbalcanicus,Schäferna1922 ■■∆ Gammaruslongipedis,G.Karaman&Pinkster1987 ● Echinogammarusantalyae,G.Karaman1971 ■●∆∆ Corophiumorientale,Schellenberg1928 ■■ Orchestiaplatensis,Krøyer1845 ● ISOPODA Lekanesphaerahookeri,(Leach1814) ∆∆∆ Cyathuracarinata,(Krøyer1847) ∆ DECAPODA Palaemonetesantennarius,(H.MilneEdwards1837) ■●∆∆ Atyaepyradesmarestiiorientalis,Bouvier1913 ● Potamonpotamios,(Olivier,1804) ∆ MYSIDACEA Diamysismesohalobiamesohalobia,Ariani&Wittmann2000 ∆ Duringthefieldstudy,afewmysidspecimenswere BecauseitisintheKöyce¤iz-DalyanProtectedArea, sampledattheninthstation.Thespecimensnubered6in YuvarlakStreamisofgreatimportanceandmustbe total;ofthese,1wasanadultmaleandtheotherswere managedwithaprogrammebasedonscientificthought. females.Becauseoftheinsufficientnumberofmale Theauthorsthinkthatthisstudycanassistfuture specimens,theauthorsdecidedtogivethemas D. protectionactivities. mesohalobiacf.mesohalobia.ArianiandWitmann(2000) identifiedthesubspecies D.mesohalobia mesohalobia fromabrackishhabitatinNWAnatolia.Todate,there Acknowledgements hasbeennorecordconcerningthedistributionofthis