常見例句A freshwater catfish(Ictalurus nebulosus) native to eastern North America,having a large head with barbels. 角鯰一種淡水鯰魚(美洲鮰薄幕狀),原產(chǎn)于北美洲東部,頭大,生有觸須A freshwater catfish(Ictalurus nebulosus)native to eastern North America, having a large head with barbels. 角鯰一種淡水鯰魚(美洲?薄幕狀),原產(chǎn)于北美洲東部,頭大,生有觸須A freshwater catfish(Ictalurus nebulosus) native to eastern North America, having a large head with barbels. 角鯰一種淡水鯰魚(美洲鮰薄幕狀),原產(chǎn)于北美洲東部,頭大,生有觸須Karyotype of Lethrinus nebulosus was examined from the renal tissue by the PHA-injection-air drying method. 摘要利用胸腔注射PHA及秋水仙素溶液,取頭腎細胞以空氣干燥法制片對星斑裸頰鯛進行了染色體核型研究。The karyotype of Lethrinus nebulosus are in accordance with the higher group of fish evolutionary taxonomy. 其核型屬特點符合典型的高位類群魚類核型特征。The results show that its karyotype formulate is 2n=48, 48t, NF=48.Satellite chromosome, secondary constrictions and sexal chromosome are not found in Lethrinus nebulosus. 結(jié)果表明其染色體核型公式為2n=48,48t,NF=48,未發(fā)現(xiàn)有隨體染色體、次縊痕及性染色體。 返回 nebulosus