Reproductive biology of Spinibarbus caldwelli
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摘要: 黑脊倒刺鲃为分批产卵型,1年中有3次产卵高峰,分别为5月、8月和10月。雌雄比例为1:0.58,其中5月最高,为1:0.67。黑脊倒刺鲃怀卵量较少,波动于2200~14181之间,平均6 041粒,但卵粒大,最大卵径可达2.4 mm,平均1.94 mm。绝对怀卵量与体重关系式为R=1265.9e3.8805W(r=0.9337),与体长关系式为R=48.425L1.4493(r=0.9585)。黑脊倒刺鲃生殖群体体长20.0~30.0 cm,体重对应在0.35~0.75 kg之间,以3龄为主。Abstract: Spinibarbus caldwellii can spawn several times a year with spawning peaks in May,August and October.The sex ratio of female to male was 1:0.58,peaked in May at 1:0.67.The fecundity of S.caldwelli was low,varying from 2200 to 14181 with an average of 6041 eggs.The egg size could be up to 2.4 mm,averaging 1.94 mm,in diameter.The relation between the absolute fecundity and body weight was R=1265.9e3.8805W(r=0.9337),and that between the absolute fecundity and body length was R=48.425L1.4493(r=0.9585).The body lengths of spawning stock were between 20.0 cm and 30.0 cm,and the body weight ranged from 0.35 kg to 0.75 kg.The spawning stock was mainly 3-year-olds.
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Key words:
- Spinibarbus caldwelli /
- reproductive biology /
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[1] 马元锋.黑脊倒刺鲃人工繁殖技术[J].福建畜牧兽医,2002,24(6):30-31. [2] 叶富良,张健东.鱼类生态学[M].广州:广东高等教育出版社,2002:80-104. [3] 钟良朋.光倒刺鲃的鱼苗培育和成鱼养殖技术[J].中国水产,2001,4:34-36. [4] 蔡子德,林岗,倪家延,等.光倒刺鲃的繁殖生物学研究[J].广西农业科学,2007,38(2):200-204.
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