Acta Agriculturae Zhejiangensis ›› 2024, Vol. 36 ›› Issue (11): 2476-2481.DOI: 10.3969/j.issn.1004-1524.20231212

• Animal Science • Previous Articles     Next Articles

Study on individual fecundity of plain pond cultured Opsariichthys bidens in Zhejiang Province, China

GE Jianhui1,2(), SHEN Xiaoming3, GUAN Wenzhi1, GUAN Xinshuai1, LOU Bao1, XU Xiaojun1,*()   

  1. 1. Institute of Hydrobiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
    2. College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo 315100, Zhejiang, China
    3. Deqing Haoyuan Aquatic Seed Industry Co., Ltd., Deqing 313000, Zhejiang, China
  • Received:2023-10-26 Online:2024-11-25 Published:2024-11-27

Abstract:

The individual fecundity of Opsariichthys bidens was studied based on 60 one-year old and two-year old female individuals according to artificial breeding standards with ovaries at Ⅳ stage from Deqing Haoyuan Fish Farm during April and May in 2021. The results showed that the relationship between body weight and full length in plain pond cultured O. bidens could be described with the function of W=0.006 1L3.209 2. The absolute fecundity for one-year old female individuals ranged from 749.33 to 6 070.20 eggs (average 3 209.74 eggs). The relative fecundity in body weight for one-year old female individuals ranged from 49.62 to 244.67 eggs·g-1 (average 142.03 eggs·g-1), respectively. The absolute fecundity for two-year old female individuals ranged from 2 178.13 to 7 530.60 eggs (average 4 400.17 eggs). The relative fecundity in body weight for two-year old female individuals ranged from 42.75 to 148.83 eggs·g-1 (average 90.68 eggs·g-1), respectively. The relative fecundity in body weight for one-year old female individuals was found to be extremely significantly higher than two-year old female individuals (P<0.01). This study indicated that one-year old female individuals have higher reproductive performance than two-year old female individuals.

Key words: Opsariichthys bidens, individual fecundity, pond culture

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