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20077()Jul.2007243JournalofChongqingNormalUniversity(NaturalScienceEdition)Vol.24No.33,(,400047):3,:(TrichodinadomergueiWallengren,1897),(TrichodinanobillisChen,1963)(TrichodinaheterodentataDuncan,1977),,,,,,,:;;;;:S941.51+4;Q959.46+8:A:167226693(2007)0320008205TaxonomicStudiesofThreeSpeciesofTrichodinaEhrenberg,1838withPathologicResearchintoGillTissueofCarassiusauratusCausedbyTrichodinaheterodentataDuncan,1977AStudyofTrichodinidsfromFreshwaterFishesinChongqingTANGFa2hui,ZHAOYuan2jun(TheKeyLaboratoryofAnimalBiology,ChongqingNormalUniversity,Chongqing400047,China)Abstract:RelativelydetailedredescriptionsofthreetrichodinindsoffreshwaterfishinChongqingaregiveninthepresentpa2perfollowingthewidespreadacceptanceoftheuniformspecificcharacteristicsproposedbyLom(1958)andthedescriptionofdenticleelementsfollowstheformatrecommendedbyVanAs&Basson(1989).Thethreespecies,subjecttoTrichodinaEhrenberg,1838,arepresentedbelow:Trichodinadomerguei(Wallengren,1897),TrichodinanobillisChen,1963andTri2chodinaheterodentataDuncan,1977.Ofthesethreespecies,TrichodinaheterodentataDuncan,1977isthefirstrecordedinChina.Atthesametime,gillsinfectedheavilybyT.heterodentataisfixedandforfurtherpathologicresearch.Thehis2topathologicalresultrevealsthatcrucianheavilyinfectedbyT.heterodentataexhibitinganinflammatoryresponseofthegillwithsuperficialepitheliumbeingdeformedandalteredwhensomeectoparasitesarepresent.Numerousdesquamatedepitheli2alcellsandtissuedebrisfromthehost’ssurfaceareregularlyobservedsurroundingtheciliates.Ciliatescanbealsoobservedunderlyingtheepithelialsurfacewithinthegillfilamentanddeathofhostswillbecausedforshortofoxygen.Keywords:Trichodinind;morphologictaxonomy;crucian;Trichodinaheterodentata;pathologicresearch,,,,,,,,3:2007202226:(No.CSTC22006BA1019):(19792),,,,,[126][7212],3(),1;Foissner[13]2Lom[14];Van&Bassion[15],Tang,Zhao&Chen[8]NikonE2600CCD21200,CorelDRAW11.0,100gNikonSMZ21500Nikon2E2600();Bousin,(7m),H2E,;NikonE2600NikonCCD21200;CorelDRAW1122.1:TrichodinadomergueiWallengren,1897:,,:20021220042(1A2C,1A2C,n=24):,5564m(60.22.3),4858m(53.32.8);;45.5m(4.80.3);810;2635m(30.22.4),1926,1319m(16.52.3),711m(91.3),,4.56.5m(5.30.5);,Y+1;,L;;,23m(2.30.4);6.59m(7.50.8),Y,,1/2YY21;390410:Wallengren(1897),Raabe(1959),[16],,2050,Lom(1958),,,,,,[17219];,,(),[17,20222]:;3,3,,3(1A),;(1B)Lom[19],,;(1C)2,,;,,;,2.2:TrichodinanobillisChen,1963::20032(1D,1D,n=12):,5265m(60.44.6),93,:4657m(51.22.8),4.86.2m(5.80.3);1011(10);2634m(30.12.8),2529,1419m(16.82.7),5.58m(61.1),,5.58m(6.41.7);,,Y+1;;,23m(2.20.5);7.59.5m(8.90.6),,;380390;:[23],;Stein[24,21],Lom[16],Kashkovsky[25],(Erythroculterdabryi),(E.ilischaeformis),,(Luciobramamacroceph2alus),(Xenocyprisargentea),Chen[26]VanAs&Basson(1989)2.3:TrichodinaheterodentataDuncan,1977::20042(1E2F,1E,n=25):25):,3762.5m(49.83.2);2851m(42.62.3);35m(4.20.5);2337m(28.52.1);;2229(250.8),1012(11);1115m(13.21.2);6.49m(7.40.8);,4.55.5m(5.10.3);;;,;22.5m(2.20.3);,,1/2YY21;,56.5m(6.10.7),;2:U,32m,21m,+Y;3904101A2C(TrichodinadomergueiWallen2gren,1897)(A,B,C);D(TrichodinanobillisChen,1963);E(TrichodinaheterodentataDuncan,1977):,,Duncan[27]Basson[3,28229]Duncan1977(Tilapiamossambica),(T.zillii)(Trichogastertrichopterus),DuncanBasson(Oreochromismossambicus)(Carassiusauratus)(Cyprinuscarpio)(Ma2cruseniusmacrolepidotus),(Petrocephaluscatostoma),(Pseudocrenilabrusphilander);(Xenopuslaevislaevis):,33.1,,,,,,01()(3),(TrichodinaheterodentataDuncan,1977)(Trichod2inellaepizooticaRabbe,1950,Sramek2Husek,1953),:,,;,2028,12,,,3.2,(3A,B),,(3C);,(3D,E),(3D,E);,,,,,,(3D2F)3.3,[4],,,,[22],Lom[1],,,,Imai[2]Kruger[3]Maria[6](hemocyticresponse),(Cerastodermaedule),Boussaid[5](Crassostreagigas),,,Lom[1,4],,;,,,,,,,,,,,,,(1-312):[1]LOMJ.TheAdhesiveDiscofTrichodinellaEpizootica2ul2trastructureandInjurytotheHostTissue[J].FoliaPara2sitol,1973,20:1932202.[2]IMAIS,MIYAZAKIH,NOMURAK.TrichodinidSpeciesfromtheGillofCulturedJapaneseEll,AuguilaJaponica,withtheDescriptionofaNewSpeciesbasedonLightandScanningElectronMicroscopy[J].EuropJProtistol,1991,27:79284.[3]KRUGERJ,VANASJG,BASSONL.ObservationsontheAdhesiveDiscofTrichodinaxenopodosFantham,1924andT.heterodentataDuncan,1977(Ciliophora:Peritrichi2da)DuringBinaryFission[J].ActaProtozool,1993,34:2032209.[4].[M].:113,:,1993.[5]BOUSSAIDB,GRIPPARIJL,etal.Trichodinasp.Infes2tationofCarassostreagigasOysterGillsinBrittany,France[J].JofInvertebratePathology,1999,73:3392342.[6]MARIAJC.DAVIDI,etal.ParasitesandPathologicCon2ditionsoftheCockleCerastodermaedulePopulationsoftheCoastofGalicia(NWSpain)[J].JournalofInvertebratePathology,2001,78:87297.[7],,.[J].,2005,40(4):91.[8],,.[J].,2005a,29(1):75280.[9]TANGFH,ZHAOYJ,TANGAK.PresenceofEctopar2asiticTrichodinids(Ciliophora,Oligohymenophorea,Per2itrichida)ontheGillsofCulturedFreshwaterFish,Caras2siusauratusinChongqing,China,withtheDescriptionofaNewSpeciesoftheGenusTrichodina[J].ActaZootaxSi2ni,2005b,30(1):35240.[10]TAOYF,ZHAOYJ.EctoparasiticTrichodinids(Proto2zoa,Ciliophora,Peritrichida)fromSomeFreshwaterFi2shesintheChongqingArea,China,withDescription