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Cited by 14Marine and fisheries researchFish Ecology and Management StudiesMathematical and Theoretical Epidemiology and Ecology Models

Case study: a simulation model of the spawning stock biomass of Pacific bluefin tuna and evaluation of fisheries regulations

Open access
Sakuramoto, Kazumi·2016·American Journal of Climate Change
DOI 10.4236/ajcc.2016.52021
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Abstract

This study proposes a simulation model that well reproduces the spawning stock biomass of Pacific bluefin tuna. Environmental factors were chosen to estimate the recruitment per spawning stock biomass, and a simulation model that well reproduced the spawning stock biomass was developed. Then, effects of various fisheries regulations were evaluated using the simulation study. The results were as follows: 1) arctic oscillations, Pacific decadal oscillations and the recruitment number of the Pacific stock of Japanese sardine were chosen as the environmental factors that determined the recruitment per spawning stock biomass; 2) spawning stock biomass could be well reproduced using a model that reproduced the recruitment per spawning stock biomass and the survival process of the population that included the effect of fishing; and 3) the effects of various fisheries regulation could be evaluated using the simulation model mentioned above. The effective regulation in the simulations conducted in this paper was a prohibition of fishing for 0- and 1-year-old fish in terms of recovering the spawning stock biomass. The reduction of fishing mortality coefficients for all age fish to 50% of actual values also showed a good performance. The recent reductions of the recruitment and spawning stock biomass were likely caused by heavy harvesting, especially of immature fish, since 2004.

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  • Decadal-scale environmental variability has been linked to bluefin recruitment and the number of fish that make the West-East trans-Pacific migrations.

    “Decadal-scale environmental variability has been linked to bluefin recruitment and the number of fish that make the West-East trans-Pacific migrations (Polovina, 1996; Sakuramoto, 2016).”

    From Oceanographic determinants of ocean sunfish (Mola mola) and bluefin tuna (Thunnus orientalis) bycatch patterns in the California large mesh drift gillnet fishery (2017) · cites this paper as Sakuramoto, 2016

    The Discussion (Section 4; page not supplied) links Pacific bluefin tuna recruitment to environmental factors, including the Pacific decadal oscillation. It does not address the number of fish making West–East trans-Pacific migrations, so that part of the claim is unsupported by this source. (LLM, conf=0.88)

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Authors
Sakuramoto, K.
Affiliations
Tokyo University of Marine Science and Technology (JP)
Corresponding author
Sakuramoto, Kazumi
Venue
American Journal of Climate Change
Publisher
Scientific Research Publishing, Inc.
Published
2016
Volume
05
Issue
02
Pages
245-260
ISSN
  • 2167-9495 (ISSN-L)
  • 2167-9509
DOI
10.4236/ajcc.2016.52021
OpenAlex
W2467458755
Cited by
14
References
6
Citations by year
2023: 1 · 2022: 1 · 2021: 3 · 2018: 1 · 2017: 7 · 2016: 1
FWCI
2.22
Type
journal article
Language
en
Open access
Licence
Locations
American Journal of Climate Change (publishedVersion, cc-by)
Topics
  • Physical Sciences › Environmental Science › Global and Planetary Change › Marine and fisheries research
  • Physical Sciences › Environmental Science › Nature and Landscape Conservation › Fish Ecology and Management Studies
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Mathematical and Theoretical Epidemiology and Ecology Models
Keywords
Pacific bluefin tuna, spawning stock biomass, recruitment (biology), fisheries regulation, computer simulation, Arctic Oscillation, Pacific Decadal Oscillation, Sardinops melanostictus, fishing mortality, population recovery

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