Relationship between trawl selectivity and fish body size in a simulated population

Peng Sun; Zhenlin Liang; Liuyi Huang; Yanli Tang; Xin He

doi:10.1007/s00343-013-2254-4

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Relationship between trawl selectivity and fish body size in a simulated population

Updated：2023-05-16

- Relationship between trawl selectivity and fish body size in a simulated population
- Journal of Oceanology and Limnology Vol. 31, Issue 2, Pages: 327-333(2013)
- Affiliations：
  
  1. College of Fisheries Ocean University of China
  2. College of Marine Shandong University at Weihai
- Author bio：
- Funds：
- DOI：10.1007/s00343-013-2254-4
  CLC：
- Online First：07 March 2013，
  
  Published：2013
- Accepted：
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Sun, P., Liang, Z., Huang, L. et al. Relationship between trawl selectivity and fish body size in a simulated population., Chin. J. Ocean. Limnol. 31, 327–333 (2013). https://doi.org/10.1007/s00343-013-2254-4
DOI：

Sun, P., Liang, Z., Huang, L. et al. Relationship between trawl selectivity and fish body size in a simulated population., Chin. J. Ocean. Limnol. 31, 327–333 (2013). https://doi.org/10.1007/s00343-013-2254-4 DOI：

摘要

Abstract

Trawl is a main fishing gear in Chinese fishery

capturing large fish and letting small ones at large. However

long-term use of trawl would result in changes of phenotypic traits of the fish stocks

such as smaller size-at-age and earlier age-at-maturation. In this study

we simulated a fish population with size characteristics of trawl fishing and the population produces one generation of offspring and lives for one year

used trawl to exploit the simulated fish population

and captured individuals by body size. We evaluated the impact of the changes on selectivity parameters

such as selective range and the length at 50% retention. Under fishing pressure

we specified the selectivity parameters

and determined that smaller selection rates and greater length at 50% retention were associated with an increased tendency towards miniaturization.

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Keywords

references

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