scholarly journals Peer Review #2 of "Extended exposure to elevated temperature affects escape response behaviour in coral reef fishes (v0.1)"

2017 ◽  
Keyword(s):  
Coral Reef ◽  
Elevated Temperature ◽  
Peer Review ◽  
Escape Response ◽  
Reef Fishes ◽  
Coral Reef Fishes ◽  
Response Behaviour ◽  
Extended Exposure

scholarly journals Extended exposure to elevated temperature affects escape response behaviour in coral reef fishes

PeerJ ◽  
2017 ◽  
Vol 5 ◽  
pp. e3652 ◽  
Author(s):  
Donald T. Warren ◽  
Jennifer M. Donelson ◽  
Mark I. McCormick
Keyword(s):  
Elevated Temperature ◽  
Escape Response ◽  
Community Dynamics ◽  
Thermal Exposure ◽  
Reef Fishes ◽  
Effect Of Temperature ◽  
Short Term ◽  
Physical Ability ◽  
Pomacentrus Amboinensis ◽  
Extended Exposure

The threat of predation, and the prey’s response, are important drivers of community dynamics. Yet environmental temperature can have a significant effect on predation avoidance techniques such as fast-start performance observed in marine fishes. While it is known that temperature increases can influence performance and behaviour in the short-term, little is known about how species respond to extended exposure during development. We produced a startle response in two species of damselfish, the lemon damselPomacentrus moluccensis,and the Ambon damselfishPomacentrus amboinensis,by the repeated use of a drop stimulus. We show that the length of thermal exposure of juveniles to elevated temperature significantly affects this escape responses.Short-term (4d) exposure to warmer temperature affected directionality and responsiveness for both species. After long-term (90d) exposure, onlyP. moluccensisshowed beneficial plasticity, with directionality returning to control levels. Responsiveness also decreased in both species, possibly to compensate for higher temperatures. There was no effect of temperature or length of exposure on latency to react, maximum swimming speed, or escape distance suggesting that the physical ability to escape was maintained. Evidence suggests that elevated temperature may impact some fish species through its effect on the behavioural responses while under threat rather than having a direct influence on their physical ability to perform an effective escape response.

Elevated temperature reduces the respiratory scope of coral reef fishes

2009 ◽  
Vol 15 (6) ◽  
pp. 1405-1412 ◽  
Author(s):  
GÖRAN E. NILSSON ◽  
NATALIE CRAWLEY ◽  
IDA G. LUNDE ◽  
PHILIP L. MUNDAY
Keyword(s):  
Coral Reef ◽  
Elevated Temperature ◽  
Reef Fishes ◽  
Coral Reef Fishes
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