Coral reefs are experiencing unprecedented declines in health on a global scale leading to severe reductions in coral cover. One major cause of this decline is increasing sea surface temperature. However, conspecific colonies separated by even small spatial distances appear to show varying responses to this global stressor. One factor contributing to differential responses to heat stress is variability in the coral's micro‐environment, such as the amount of water flow a coral experiences. High flow provides corals with a variety of health benefits, including heat stress mitigation. Here, we investigate how water flow affects coral gene expression and provides resilience to increasing temperatures. We examined host and photosymbiont gene expression of
This content will become publicly available on December 26, 2024
Arctic Grayling
Over a 144‐day trial, Arctic Grayling juveniles were subjected to water temperatures ranging from 8°C to 26°C to measure the effects on growth, survival, gene expression, and antioxidant enzyme activity.
Fish growth increased with increasing water temperature up to 18°C, beyond which survival was reduced. Fish did not survive at temperatures above 22°C. In response to temperatures above 16°C, 3.0‐fold and 1.5‐fold increases in gene expression were observed for superoxide dismutase (
Our findings thus underscore the vulnerability of Arctic Grayling to minor changes in water temperature. Further increases in mean water temperature could significantly compromise the survival of Arctic Grayling in the Big Hole River.
- NSF-PAR ID:
- 10482263
- Publisher / Repository:
- Wiley Blackwell (John Wiley & Sons)
- Date Published:
- Journal Name:
- Transactions of the American Fisheries Society
- Volume:
- 153
- Issue:
- 1
- ISSN:
- 0002-8487
- Format(s):
- Medium: X Size: p. 3-22
- Size(s):
- ["p. 3-22"]
- Sponsoring Org:
- National Science Foundation
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