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1、萬方數(shù)據(jù)四川動(dòng)物2008年第27卷第5期SichuanJournalofZoologyVoL27No.52008半滑舌鰨胚胎發(fā)育組織學(xué)觀察劉美,李鳳超1,穆淑梅1,康現(xiàn)江H,蘇文清2(1.河北大學(xué)生命科學(xué)學(xué)院,河北,保定071002;2.河北省唐山市水產(chǎn)技術(shù)推廣站)摘要:對(duì)半滑舌鰨Cynoglossussemilaevis胚胎發(fā)育進(jìn)行了組織學(xué)觀察,首次描述了半滑舌鰨胚胎發(fā)育過程中脊索、眼囊、中胚層、脊髓底板、神經(jīng)管、腸、耳囊、腦、口咽膜和心管等組織結(jié)構(gòu)。半滑舌鰨眼原基出現(xiàn)后,肌節(jié)在胚體后部開始分化。隨后神經(jīng)管前端不斷膨大形成腦原基,腦形成之后在后腦的后面形成耳囊。胚體形成后,脊索位于腦的腹面
2、,在胚胎發(fā)育過程巾脊索細(xì)胞空泡化。腸位于脊索腹面。脊索背部有一排立方體細(xì)胞,為脊髓底板,脊髓底板位于神經(jīng)管腹面并延伸到后腦前端。心臟是含有紅血球的一個(gè)薄壁管,位于胚體頭部腹面,且與中腦平行。關(guān)鍵詞:半滑舌鰨;胚胎;組織學(xué);脊索;脊髓底板;心管中圖分類號(hào):Q959.486;Q954.48文獻(xiàn)標(biāo)識(shí)碼:A文章編號(hào):1000—7083(2008)05—0737一03HistologicalStudyonEmbryonicDevelopmentofCynoglossussemilaevisLIUMeil,LIFeng—cha01,MUShu.meil,KANGXian-jian91‘,SUWen-qi
3、n92(1.CollegeofLifeSciences,HebeiUniversity,Baoding,HebeiProvince071002,China;2.TangshanMunicipalFisheries,TechnologyExtensionCenter)Abstract:TheembryonicdevelopmentofCynoglossussemilaevisWagobserved誦thtissueslicemethod.Notochord,opticvesicle,meFⅪtdernl,spinalcordfloor-plate,neuraltube,gut,oticvesi
4、cle,brain,oropharyngealmembraneandtubularheartofCsemilaevisembryoweredescribedforthefirsttime.There8IlJtindicatedthat.myomereswereinitialdifferentia—tedatthebackoftheembryoafterformationoftheopticprimordium.Thentheneuralkeelwasenlargedanteriorlytoformthebrainrudiment.Afterformationoftheembryo,theot
5、icvesiclepresentedbehindthehindbrain.ThenotochordWasYen-traltothebrain.Duringthedevelopmentoftheembryo,thecellsofthenotochordwerevacuolatedandbeneaththenoto-chordWasthegut.DorsaltotheembryoWagarowofeuboidalcells,thespinalcordfloor-plate.ThisplateWasventraltotheneuraltube.Thefloor—plateextendedanter
6、iorlytothehindbrain.TheheartWasathin-walledtubecontainingerythrocytes.Itwasventraltotheheadparalleledwithdieneephalon.Keywords:Cynoglossussemilaevis;embryo;histology;notochord;spinalcordfloor-plate;tubularheart半滑舌鰨Cynoglossussemilaevis屬鰈形目Pleuronecti—formes,舌鰨科Cynoglossidac,舌鰨屬Cynoglossus,有鰨米、牛舌頭等俗
7、稱,為我國近海常見的暖溫性大型經(jīng)濟(jì)魚類。半滑舌鰨在我罔沿海均有分布,具有牛長快、食性廣、營養(yǎng)等級(jí)低、市場價(jià)值高等優(yōu)點(diǎn),是理想的養(yǎng)殖品種。關(guān)于半滑舌鰨的胚胎發(fā)育過程,國內(nèi)已有報(bào)道(姜言偉等,1988;杜偉,2003;萬瑞景等,2004),一些魚類胚胎發(fā)育的組織學(xué)觀察也有部分報(bào)道(Galman&Avtalion,1989;Morrisonet缸.,2001;柳愛蓮等,2004;庹云,2006),但半滑舌鰨胚胎發(fā)育