摘要
于2021年8月7日—8月22日,在广西壮族自治区桂江的8个江段,采集73尾黄颡鱼(雌鱼43尾,雄鱼30尾),研究其种群在不同江段的组成、生长及性腺发育状况。结果表明,桂江黄颡鱼种群体长为8.30~11.59 cm,体质量为9.50~35.23 g;雌鱼、雄鱼体长和体质量关系均呈幂函数,雌、雄体长体质量关系分别为W_(♀)=0.0395L^(2.6566)(R^(2)=0.9486),W_(♂)=0.0448L^(2.5731)(R^(2)=0.8495),b值与理论匀速生长值3之间差异不显著(P>0.05),雌雄群体均为匀速生长,群体性比为1.36∶1。指出,黄颡鱼群体低龄化明显,雌、雄群体均以2龄居多,未见4龄以上个体;雌鱼性腺成熟系数显著高于雄性(P<0.05),雌、雄鱼性腺时相均以Ⅲ期占比最高,均未达到性成熟峰值。
From the 7th to 22th in August 2021,a total of 73 Pelteobagrus fulvidracos(43 females and 30 males)were collected from 8 sections of the Guijiang River in Guangxi Zhuang Autonomous Region to study their population composition,growth and gonad development.7 The results showed that body length of P.fulvidraco group was concentrated in the range from 8.30-11.59 cm and body weight mainly ranged from 9.50-35.23 g.The power functon of female body length and body weight is W_(♀)=0.0395L^(2.6566)(R^(2)=0.9486),which of male is W_(♂)=0.0448L^(2.5731)(R^(2)=0.8495).There is no significant difference between the actual b value and the theoretical one(P>0.05).The female and male groups grow at uniform rates respectively,with a group sex ratio of 1.36∶1.In this survey,younger-age trend was exhibited among the school of P.fulvidraco,with the majority being at the age of 2,and no individuals above the age of 4 were found.The gonad maturity coefficient of female was significantly higher than that of male(P<0.05),and the proportion of gonad phase III was the highest in both female and male groups,which did not reach the peak the maxium of sexual maturity by extension.
作者
程蔓
麻艳群
程光平
韦云勇
王梦然
刘宏祥
CHENG Man;MA Yanqun;CHENG Guangping;WEI Yunyong;WANG Mengran;LIU Hongxiang(College of Animal Science and Technology,Guangxi University,Nanning,Guangxi 530004,China;Guangxi Institute of Oceangraphy Limited Liability Company,Beihai,Guangxi 536000,China)
出处
《水产养殖》
CAS
2024年第9期12-19,28,共9页
Journal of Aquaculture
基金
(巴马)油鱼规模化人工繁殖集成技术研究(桂科AB18221116)。
关键词
黄颡鱼
体长
体质量
性腺特征
桂江
Pelteobagrus fulvidraco
Body length
Body weight
Gonad characteristics
Guijiang River
