摘要
针对虾夷扇贝在养殖过程中出现的问题,本研究以风向标扇贝和虾夷扇贝为亲本进行了种间杂交实验,培育出了虾夷扇贝(♀)×风向标扇贝(♂)(PY♀×PC♂)及风向标扇贝(♀)×虾夷扇贝(♂)(PC♀×PY♂)两种杂交一代,并对其早期发育及幼虫期和稚贝期生长进行了比较。结果显示,PY♀×PC♂杂交一代的受精率、孵化率和幼虫期的生长和存活率介于双亲之间,而壳高和壳长的生长均高于双亲,表现出显著的杂种优势;PC♀×PY♂杂交一代的受精率、孵化率、幼虫期生长和存活率均低于双亲,表现为杂种劣势。在养殖第1年,PY♀×PC♂杂交一代的壳高、壳长、壳宽和体质量增长率均高于双亲,杂种优势显著。研究表明,卵子来源对后代的表现具有极其显著的影响,以雌性虾夷扇贝与雄性风向标扇贝进行种间杂交从而改良虾夷扇贝种质是可行的。
In order to solve the problems in the cultivation of the Patinopecten yessoensis,a crossbreeding experiment was carried out between P.yessoensis and P.caurinus.Two hybrids,P.yessoensis(♀)×P.caurinus(♂)(PY♀×PC♂) and P.caurinus(♀)×P.yessoensis(♂)(PC♀×PY♂),together with purebred P.yessoensis and P.caurinus were produced.The PY♀×PC♂ cohort outperformed both pure-bred parental cohorts in both larval and juvenile growth with medial performance in fertilization rate,hatching rate and larval survival rate between two pure-bred cohorts.The PC♀×PY♂ exhibited negative hetereosis in fertilization rate,hatching rate and larval growth,as well as in survival rate.It seems that the origin of eggs had significant influence on performance of hybrids.The results thus suggest that it is possible to improve the stock of the local Japanese scallops by hybridizing them with P.caurinus.
作者
刘桂龙
林基亮
杨斌
陈银
马斌
魏振禄
张金盛
刘博
王春德
LIU Guilong;LIN Jiliang;YANG Bin;CHEN Yin;MA Bin;WEI Zhenlu;ZHANG Jinsheng;LIU Bo;WANG Chunde(Qingdao Agricultural University,Qingdao 266109,China;Qingdao Airport Inspection and Quarantine Bureau,Qingdao 266108,China;Qingdao Oceanwide Bio Tech Co.,Ltd.,Qingdao 266101,China;Dalian Changhai Zhenlu Aquaculture Co.,Ltd.,Dalian 116504,China;Xiadian Agricultural Technology Promotion Station of Zhaoyuan,Yantai 265415)
出处
《水产学报》
CAS
CSCD
北大核心
2018年第12期1880-1888,共9页
Journal of Fisheries of China
基金
农业部"九四八"项目(2015-z61)
山东省现代农业产业技术体系贝类创新团队项目(SDAIT-14)~~
关键词
虾夷扇贝
风向标扇贝
种间杂交
杂种优势
Patinopecten yessoensis
Patinopecten caurinus
hybridization
heterosis
