Reproductive biology of <italic style="font-style: italic">Hemitripterus</italic> <italic style="font-style: italic">villosus</italic> in the Bohai Strait, China

Ping SUN; Song QIN; Zhengyi LIU; Longchuan ZHUANG

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Reproductive biology of Hemitripterus villosus in the Bohai Strait, China

Biology | Updated：2024-10-14

- Reproductive biology of Hemitripterus villosus in the Bohai Strait, China
- Journal of Oceanology and Limnology Vol. 42, Issue 3, Pages: 881-892(2024)
- Affiliations：
  
  1.Key Laboratory of Coastal Biology and Biological Resource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
  2.University of Chinese Academy of Sciences, Beijing 100049, China
  3.Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
- Author bio：
  
  lczhuang@yic.ac.cn
- Funds：
- DOI：
  CLC：
- Received：21 March 2023，
  
  Accepted：20 April 2023，
  
  Online First：27 July 2023，
  
  Published：01 May 2024
- Accepted：
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SUN Ping,QIN Song,LIU Zhengyi,et al.Reproductive biology of Hemitripterusvillosus in the Bohai Strait, China[J].Journal of Oceanology and Limnology,2024,42(03):881-892.
DOI：

SUN Ping,QIN Song,LIU Zhengyi,et al.Reproductive biology of Hemitripterusvillosus in the Bohai Strait, China[J].Journal of Oceanology and Limnology,2024,42(03):881-892. DOI：

摘要

Abstract

To understand the reproductive biology of

Hemitripterus

villosus

in the Bohai Strait

and fill the key knowledge gap in verifying reproductive seasonality and documenting gonadotropin dependent reproductive cycle of this species

a year‐round detail study was conducted for the first time. In total

263 individuals were randomly sampled off the coasts of the Bohai Strait. Results show that and the overall female‐to‐male ratio (1.35꞉1) did not differ significantly from the 1꞉1 sex ratio. The length and weight relationship for females and males were regressed

depicting an isometric growth for both sexes. Four reproductive phases of the complete gonadotropin dependent reproductive cycle in both sexes were identified. The monthly variations in the gonadosomatic and hepatosomatic indexes for both sexes further indicated that this species spawns a single batch of eggs per year and the peak spawning period is from October to December. The average diameter of eggs ranged from 2.10 to 3.57 mm. The length at first sexual maturity was 224.87 mm for females and 241.26 mm for males. Significant positive relationships between absolute fecundity and fish size

and also gonadal weight were observed.

villosus

from the Bohai Strait exhibited smaller body size

smaller egg diameter

lower gonadosomatic index

lower absolute fecundity

and higher population extinction risk than the other populations’ studied previously. Our findings contribute to understanding the status of this isolated westernmost population

and we emphasize that more efficient protection measures for the species and control measures are urgently required to improve the coastal environment in the Bohai Strait.

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Keywords

references

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Related Author

Ping SUN

Song QIN

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Liangsen LIU

Related Institution

Center for Ocean Mega-Science, Chinese Academy of Sciences

University of Chinese Academy of Sciences

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Reproductive biology of Hemitripterus villosus in the Bohai Strait, China

DOI：

摘要

Abstract

关键词

Keywords

references