Rising temperatures may drive fishing-induced selection of low-performance phenotypes

Clark, Timothy D., Messmer, Vanessa, Tobin, Andrew J., Hoey, Andrew S., and Pratchett, Morgan S. (2017) Rising temperatures may drive fishing-induced selection of low-performance phenotypes. Scientific Reports, 7. 40571.

[img]
Preview
PDF (Published Version) - Published Version
Available under License Creative Commons Attribution.

Download (637kB) | Preview
View at Publisher Website: https://doi.org/10.1038/srep40571
 
10
62


Abstract

Climate warming is likely to interact with other stressors to challenge the physiological capacities and survival of phenotypes within populations. This may be especially true for the billions of fishes per year that undergo vigorous exercise prior to escaping or being intentionally released from fishing gear. Using adult coral grouper (Plectropomus leopardus), an important fisheries species throughout the Indo-Pacific, we show that population-level survival following vigorous exercise is increasingly compromised as temperatures increase from current-day levels (100-67% survival at 24-30 °C) to those projected for the end of the century (42% survival at 33 °C). Intriguingly, we demonstrate that high-performance individuals take longer to recover to a resting metabolic state and subsequently have lower survival in warm water compared with conspecifics that exercise less vigorously. Moreover, we show that post-exercise mortality of high-performance phenotypes manifests after 3-13 d at the current summer maximum (30 °C), while mortality at 33 °C occurs within 1.8-14.9 h. We propose that wild populations in a warming climate may become skewed towards low-performance phenotypes with ramifications for predator-prey interactions and community dynamics. Our findings highlight the susceptibility of phenotypic diversity to fishing activities and demonstrate a mechanism that may contribute to fishing-induced evolution in the face of ongoing climate change.

Item ID: 54190
Item Type: Article (Research - C1)
ISSN: 2045-2322
Additional Information:

This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

Funders: FRDC-DCCEE, Australian Research Council (ARC) Centre of Excellence for Coral Reef Studies (CE), Australian Institute of Marine Science (AIMS), Queensland Smart Futures Fellowship
Date Deposited: 19 Jun 2018 23:56
FoR Codes: 06 BIOLOGICAL SCIENCES > 0602 Ecology > 060205 Marine and Estuarine Ecology (incl Marine Ichthyology) @ 30%
06 BIOLOGICAL SCIENCES > 0608 Zoology > 060806 Animal Physiological Ecology @ 30%
05 ENVIRONMENTAL SCIENCES > 0501 Ecological Applications > 050101 Ecological Impacts of Climate Change @ 40%
SEO Codes: 96 ENVIRONMENT > 9605 Ecosystem Assessment and Management > 960507 Ecosystem Assessment and Management of Marine Environments @ 50%
96 ENVIRONMENT > 9603 Climate and Climate Change > 960305 Ecosystem Adaptation to Climate Change @ 50%
Downloads: Total: 62
Last 12 Months: 30
More Statistics

Actions (Repository Staff Only)

Item Control Page Item Control Page