CollegeofAnimalScienceandTechnology专题知识讲座.pptx

JlliangZhang(Ph.D)

;;Ifyoulookatadropofpondwaterunderamicroscope,allthelittlecreaturesyouseeswimmingaroundareprotists.;

Allprotistshaveanucleusandarethereforeeukaryotic.

Protistsareeitherplant-like,animal-likeorfungus-like.

;PROTISTS;KingdomProtista;Principalcharacter;Unicellular;StructureOrganelles;StructureOrganelles;Alltypesofnutrition/feeding;;;OsmoregulationExcretion;Locomotion;AsexualReproduction;Plasmotomy（质裂）;SexualReproduction;Parameciumreproduction;Parameciumreproduction;Parameciumreproduction;Parameciumreproduction;Gamogenesis（配子生殖）：

;**Notethatyourtextbookhasdifferenttaxonomicgroupingsbutwewillfollowthelab;（Ⅰ）、Mastigophora（鞭毛虫纲）;Lightdetector:swellingnearthebaseofthelongflagellum;detectslightthatisnotblockedbytheeyespot;asaresult,Euglenamovestowardlightofappropriateintensity,animportantadaptationthatenhancesphotosynthesis;;binaryfission;Encystation（包囊形成）;2.characteristicspresentinclassmastigophora(鞭毛纲);Thereareabout2023speciesandseveralorders,whicharegroupedintotwosubclasses:

I.ClassPhytomastigophora（植鞭亚纲）

II.ClassZoomastigophora（动鞭亚纲）;A、Phytomastigophora：Membersofthethisclasshavebothchloroplastsandflagella。

常见旳有绿眼虫、团藻虫、盘藻虫、钟罩虫、夜光虫等。;RedTides

Environmentalconditionscancausedinoflagellate（腰鞭毛虫）populationstoexploderesultinginredtides

cancausefishkills

involvedinparalyticshellfishpoisoning

;B、Zoomastigophora;1）Leishmania（利什曼原虫）;2）Trypansoma（锥虫）

;sleepingsickness;3）Cryptobia（鳃隐鞭虫）;阴道毛滴虫Trichomonasvaginalis;领鞭毛虫和变形鞭毛虫;（Ⅱ）Sarcodina;Pseudopodiaassistphagocytosisandmotionintheorganisms.

Thepellicle(orenvelope)isusuallythinandflexible.

Theircytoplasmconsistsofclear,outerectoplasmandgranular,innerendoplasm.

Asexualreproductionoccursbyfissionofthecell.;3、ClassificationofSarcodina;Symbolanimal：entamoebahistolytica;;表壳虫Arcellasp;2）Actinopoda;(Ⅲ)Sporovoa(孢子纲