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为了探讨鱼类远缘杂交如何获得可育的后代和加快选育出养殖新种类,从71尾6龄的赤眼鳟(Squaliobarbus curriculus)(♀)和鳙(Aristichthys nobilis)(♂)亚科间杂种F1的二倍体群体中挑选雌雄亲鱼各9尾进行人工催产,发现它们能在产卵池中自行产卵,获得吸水膨胀后的卵子约30万粒。采用人工授精的方法进行了杂种F1自交,杂种F1(♀)与赤眼鳟(♂)和鳙(♂)的回交,杂种F1(♀)与黄尾鲴(Xenocypris davidi)(♂)和青鱼(Mylopharyngodon piceus)(♂)的杂交试验。试验结果:9尾杂种F1共获得成熟卵粒258.6万粒,各组合的受精率为23.60%~66.41%,孵化率为5.0%~35.30%,畸形率为38.55%~87.00%,并且获得了自交、回交和杂交子代。结果表明,该亚科间杂种可育。
In order to explore how distant hybridization of fish can obtain fertile offspring and speed up the breeding of new breeds, we selected 71 hybrid F1 hybrids of Squaliobarbus curriculus (♀) and Aristichthys nobilis (♂) Of the diploid population, male and female broodstock were selected for artificial ovulation and found that they could spawn in the spawning pool to obtain about 300,000 eggs after swelling. Hybrids F1 hybrids, backcrossing of hybrid F1 (♀) with red brown trout (♂) and 鳙 (♂), hybrid F1 (♀) and Xenocypris davidi (♂) and herring (♂) were carried out by artificial insemination. Mylopharyngodon piceus) (♂) hybridization test. The results showed that there were 2.56 million mature oysters in 9 F1 hybrids with fertilization rate of 23.60% ~ 66.41%, hatching rate of 5.0% ~ 35.30% and deformity rate of 38.55% ~ 87.00% Pay, back and cross offspring. The results showed that the interspecific hybrids were fertile.