Skip to main content

IMIS

A new integrated search interface will become available in the next phase of marineinfo.org.
For the time being, please use IMIS to search available data

 

[ report an error in this record ]basket (0): add | show Print this page

Projected effects of ocean warming on an iconic pelagic fish and its fishery
Moltó, V.; Palmer, M.; Ospina-Álvarez, A.; Pérez-Mayol, S.; Benseddik, A.B.; Gatt, M.; Morales-Nin, B.; Alemany, F.; Catalán, I.A. (2021). Projected effects of ocean warming on an iconic pelagic fish and its fishery. NPG Scientific Reports 11(1): 8803. https://hdl.handle.net/10.1038/s41598-021-88171-1
In: Scientific Reports (Nature Publishing Group). Nature Publishing Group: London. ISSN 2045-2322; e-ISSN 2045-2322, more
Peer reviewed article  

Available in  Authors 

Authors  Top 
  • Moltó, V.
  • Palmer, M.
  • Ospina-Álvarez, A.
  • Pérez-Mayol, S.
  • Benseddik, A.B.
  • Gatt, M.
  • Morales-Nin, B., more
  • Alemany, F.
  • Catalán, I.A.

Abstract
    Increasing sea temperature is a driver of change for many fish traits, particularly for fast-growing epipelagic species with short life spans. With warming, altered spawning phenology and faster growth may produce substantially larger body sizes of the new cohort, affecting fishery productivity. We present an individual-based model (IBM) that predicts the distribution of fish length at catch under observed and projected thermal scenarios, accounting for mortality, temperature-dependent spawning phenology, temperature- and photoperiod- dependent growth. This IBM was demonstrated with Coryphaena hippurus (common dolphinfish), a circumglobally-distributed and highly thermophilic species sustaining commercial and recreational fisheries where it is present. The model projected a 13.2% increase in the average length at catch under marine heatwave conditions compared to the current thermal regime (1995–2005 average). Projections under RCP scenarios 4.5 and 8.5 by the end of the century led to 5.1% and 12.8% increase in average length, respectively. Furthermore, these thermal scenarios affected spawning phenology differently, producing higher variance in body size under RCP 8.5 scenario with respect to marine heatwave conditions. This study highlights how the environmental effects of climate change can alter the distribution of species length at catch.

All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy Top | Authors