CAJ | 학술논문

为改良中国的罗氏沼虾种质资源，了解原种罗氏沼虾的杂交后代是否具有一定的杂交优势，以孟加拉引进种群Macrobrachium rosenbergii dacqueti （ Sunier，1925年）和越南引进种群 Macrobrachium rosenbergii rosenbergii （ De Man，1879年）为父母本做正、反杂交，并对杂交组合的繁殖参数进行统计分析；了解了正反杂交母本的怀卵量，受精率，体重相对繁殖力，体长相对繁殖力及受精卵规格。结果表明，正反交各杂交组的各项繁殖参数的平均值组间差异不显著（ P＞0.05），受精卵粒规格达到941.9～976.2粒/g。更大的卵粒会发育成更大的幼体，有助于提高种群的生存能力。
위개량중국적라씨소하충질자원，료해원충라씨소하적잡교후대시부구유일정적잡교우세，이맹가랍인진충군Macrobrachium rosenbergii dacqueti （ Sunier，1925년）화월남인진충군 Macrobrachium rosenbergii rosenbergii （ De Man，1879년）위부모본주정、반잡교，병대잡교조합적번식삼수진행통계분석；료해료정반잡교모본적부란량，수정솔，체중상대번식력，체장상대번식력급수정란규격。결과표명，정반교각잡교조적각항번식삼수적평균치조간차이불현저（ P＞0.05），수정란립규격체도941.9～976.2립/g。경대적란립회발육성경대적유체，유조우제고충군적생존능력。
To improve the germplasm resources of Macrobrachium rosenbergii in China , the hybrid offspring of protospecies was studied to understand their heterosis.The species introduced from Bangladesh(M.rosenbergii dacqueti)and Vietnam(M.rosenbergii rosenber-gii) were selected as the parents to conduct positive , reverse hybridization , and the reproductive parameters of hybridized combination were analyzed by statistic .Parameters such as the fecundity , fertilization rate , relative weight fecundity , relative body length fecundity and the fertilized egg size of female parent in the positive , reverse hybridization were studied .The reproductive parameters mean in each positive , reverse cross combinations was not significant in this study ( P>0.05 ) , and the fertilized egg size of the hybrid combina-tions reached to 941.9 -976.2 seeds per gram .The greater eggs could develop into greater larvae which could help to enhance the vi -ability of the population .