What is gill health and what is its role in marine finfish aquaculture in the face of a changing climate?

Foyle, Kevin L., Hess, Sybille, Powell, Mark D., and Herbert, Neill A. (2020) What is gill health and what is its role in marine finfish aquaculture in the face of a changing climate? Frontiers in Marine Science, 7. 400.

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It is hard to find a definition of gill health in the literature although there is a lot of information on changes to gill structure as a result of infectious and non-infectious challenge. How these changes relate to overall fish health is sometimes not clear. Interaction between the gill, the fish, and a range of anticipated changes in the environment will have a currently unknown effect on marine health and aquaculture production. To a degree, fish will likely be able to ameliorate certain changes, such as compensating for slightly elevated carbon dioxide; however, these actions may come at the cost of compromising other functions such as osmoregulation. Compensation will also depend on gill epithelial health and other environmental factors like external nitrogen and ammonia sources which can rise depending on the direction future culture and levels of eutrophication take. Fish can also remodel gill structure in response to salinity, hypoxia, or acidification but it appears that increased temperatures may be associated with increased pathology observable in the gill, and certain fishes may be more susceptible to change. There is a need for more targeted research into climate change-specific gill physiology and a need to recognise gill health as being a key component of food security and not just fish health.

Item ID: 66805
Item Type: Article (Research - C1)
ISSN: 2296-7745
Keywords: fish health, fish physiology, food security, gill physiology, gill plasticity, gill remodeling
Copyright Information: Copyright © 2020 Foyle, Hess, Powell and Herbert. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
Funders: Centre for Sustainable Tropical Fisheries and Aquaculture (CSTFA), James Cook University
Date Deposited: 05 May 2021 01:08
FoR Codes: 31 BIOLOGICAL SCIENCES > 3103 Ecology > 310303 Ecological physiology @ 60%
31 BIOLOGICAL SCIENCES > 3103 Ecology > 310305 Marine and estuarine ecology (incl. marine ichthyology) @ 40%
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