Chronic warm exposure impairs growth performance and reduces thermal safety margins in the common triplefin fish (Forsterygion lapillum )

The Journal of Experimental Biology
Tristan J McArleyN A Herbert

Abstract

Intertidal fish species face gradual chronic changes in temperature and greater extremes of acute thermal exposure through climate-induced warming. As sea temperatures rise, it has been proposed that whole-animal performance will be impaired through oxygen and capacity limited thermal tolerance [OCLTT; reduced aerobic metabolic scope (MS)] and, on acute exposure to high temperatures, thermal safety margins may be reduced because of constrained acclimation capacity of upper thermal limits. Using the New Zealand triplefin fish (Forsterygion lapillum), this study addressed how performance in terms of growth and metabolism (MS) and upper thermal tolerance limits would be affected by chronic exposure to elevated temperature. Growth was measured in fish acclimated (12 weeks) to present and predicted future temperatures and metabolic rates were then determined in fish at acclimation temperatures and with acute thermal ramping. In agreement with the OCLTT hypothesis, chronic exposure to elevated temperature significantly reduced growth performance and MS. However, despite the prospect of impaired growth performance under warmer future summertime conditions, an annual growth model revealed that elevated temperatures may only shift the t...Continue Reading

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Citations

Sep 27, 2018·The Journal of Experimental Biology·Tristan J McArleyN A Herbert
Oct 17, 2019·Frontiers in Physiology·Christopher L JerdeMark L Taper
Jul 23, 2020·The Journal of Experimental Biology·Ian A BouyoucosJodie L Rummer
Apr 4, 2019·Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology·Tristan J McArleyN A Herbert
Nov 21, 2020·Journal of Fish Biology·D J McKenzieA P Farrell
Feb 26, 2021·The Journal of Experimental Biology·Sjannie LefevreDavid J McKenzie
Jun 22, 2018·The Journal of Experimental Biology·William A TalbotBlair O Wolf
May 1, 2021·Animals : an Open Access Journal From MDPI·Muhammad Nur SyafaatMhd Ikhwanuddin

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