eCite Digital Repository

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


Clark, TD and Messmer, V and Tobin, AJ and Hoey, AS and Pratchett, MS, Rising temperatures may drive fishing-induced selection of low-performance phenotypes, Scientific Reports, 7 Article 40571. ISSN 2045-2322 (2017) [Refereed Article]


Copyright Statement

Copyright 2017 The authors. Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0)

DOI: doi:10.1038/srep40571


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 (10067% survival at 2430 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 313 d at the current summer maximum (30 C), while mortality at 33 C occurs within 1.814.9 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 Details

Item Type:Refereed Article
Keywords:catch-and-release fishing, climate warming, phenotypes
Research Division:Biological Sciences
Research Group:Zoology
Research Field:Animal physiological ecology
Objective Division:Environmental Management
Objective Group:Coastal and estuarine systems and management
Objective Field:Coastal or estuarine biodiversity
UTAS Author:Clark, TD (Dr Timothy Clark)
ID Code:116096
Year Published:2017
Deposited By:Fisheries and Aquaculture
Deposited On:2017-05-01
Last Modified:2018-03-21
Downloads:98 View Download Statistics

Repository Staff Only: item control page