二倍體和三倍體皺紋盤鮑繁殖期性腺發(fā)育、生長與生化成份的比較研究.pdf

1、大連水產(chǎn)學(xué)院碩士學(xué)位論文二倍體和三倍體皺紋盤鮑繁殖期性腺發(fā)育、生長與生化成份的比較研究姓名：閻松申請學(xué)位級別：碩士專業(yè)：水產(chǎn)養(yǎng)殖指導(dǎo)教師：李霞2002.6.1二倍體和三倍體皺紋盤鮑繁殖期性腺發(fā)育、生長與生化成份的比較研究Comparativestudiesongonaddevelopment，growthandbiochemicalcompositionindiploidandtriploidabalones，Haliotisdiscu

2、shannaiduringthereproductiveperiodAbstractGonaddevelopmentindiploidandtriploidabalones(HaliotisdiscushannaOwasobservedbymeansofhistological，ultrastructuralandhistochemicaltechniquesduringthereproductiveperiodGrowthandbio

3、chemicalcompositionofpodiummuscleswerealsostudiedTheresultsindicatedthatthegametogenesisintriploidabaloneswasretarded，themajorityofwhichappearedtohaltattherestingandproliferatingstageTheminorityoffemalesdevelopedintotheg

4、rowingandmaturingstagewi也afewmatureovapresentMalesonlydevelopedintothegrowingstageandspermatozoawerenotdetectedDuringtheperiodofvitellogenesis，odcytesofdiploidabaloneshaddevelopedorganellesandnumerousyolkgranuleswhichwer

5、eevenlydistributedincytoplasmIncontrastoocytesoftriploidshadlessorganellesbutsimilaryolkgranulesTriploidabalonespossessedmorelysosomesbutlessotherorgandiesthandiploidsintheCOUrSeofspermatogenesisThereweremalformedorretar

6、dedsecondaryspermatocytesandspermatidsobservedinmalereproductivesystemoftriploidsWeconcludedalmostthesalTleresultsintermsofhistochemicaltestsondiploidandtriploidabalonesAfterthreeyearsofgro叭la，triploidsweresignificantlys

7、mallerthandiploidsinshelllengthshellheightandweightHowevertherelativegrowthrateoftheformerwashigherthanthatofthelatterthroughoutthereproductiveseasollNosignificantdifferenceswerefoundbetweendiploidandtriploidabalonesinbi