Navigation Links
Reef fish find it's too hot to swim
Date:11/27/2013

We all know the feeling, it's a hot summer afternoon and you have no appetite and don't want to do anything apart from lay on the couch.

A team of researchers from the ARC Centre of Excellence for Coral Reef Studies at James Cook University has shown that ocean warming may make some large reef fish feel the same way.

Researcher Dr Jacob Johansen said that fish rely on swimming for almost all activities necessary for survival, including hunting for food and finding mates.

"However, global warming may reduce the swimming ability of many fish species, and have major impacts on their ability to grow and reproduce," he said.

Dr Johansen said that research aimed at understanding the impact of global warming on the commercially important fish species, coral trout, revealed that increasing ocean temperatures may cause large fish to become lethargic, spending more time resting on the bottom and less time swimming in search for food or reproductive opportunities.

He said that the study he and his colleagues had undertaken showed that even when individuals do muster up enough energy to swim around, they swim at much slower rate. This lower activity is likely to directly impact their ability to catch food, or visit spawning sites.

"The loss of swimming performance and reduced ability to maintain important activities, like moving to a spawning site to reproduce, could have major implications for the future distribution and abundance of these species," Dr Johansen said.

Professor Morgan Pratchett said that the changes to activity patterns and swimming speeds "may directly influence where we will find these species in the future and how many we are able to fish sustainably".

But all is not lost, Dr Johansen said, as there was some evidence that coral trout may be able to adapt to increasing temperatures.

"Populations from the northern region of the Great Barrier Reef were a little better than southern populations at tolerating these conditions," he said.

"Coral trout is one of the most important fisheries in the South-East Pacific. If we want to keep this fishery in the future, it is critical that we understand how global warming may impact the species."

"This will allow us to develop management plans that will help to keep the species, and its fisheries, healthy".

The research team, which comprises Dr Vanessa Messmer, Dr Darren Coker, and Dr Andrew Hoey, along with Professor Pratchett and Dr Johansen, are planning further experiments to clarify the ability of coral trout to adapt to the rapid changes caused by global warming or if they may be forced to relocate to cooler more southerly waters.


'/>"/>

Contact: Jacob Johansen
Jacob.Johansen@my.jcu.edu.au
61-041-694-8733
ARC Centre of Excellence in Coral Reef Studies
Source:Eurekalert

Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/22/2016)... ANGELES , June 22, 2016 /PRNewswire/ ... identity management and verification solutions, has partnered ... edge software solutions for Visitor Management, Self-Service ... provides products that add functional enhancements ... partnership provides corporations and venues with an ...
(Date:6/16/2016)... , June 16, 2016 ... size is expected to reach USD 1.83 billion ... Grand View Research, Inc. Technological proliferation and increasing ... applications are expected to drive the market growth. ... , The development of advanced multimodal ...
(Date:6/7/2016)... 2016  Syngrafii Inc. and San Antonio Credit ... includes integrating Syngrafii,s patented LongPen™ eSignature "Wet" solution ... will result in greater convenience for SACU members ... maintaining existing document workflow and compliance requirements. ... Highlights: ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... Calif. , June 23, 2016  Blueprint Bio, ... biological discoveries to the medical community, has closed its ... Matthew Nunez . "We have received ... with the capital we need to meet our current ... essentially provide us the runway to complete validation on ...
(Date:6/23/2016)... CA (PRWEB) , ... June 23, 2016 , ... ... software, is exhibiting at the Pennsylvania Convention Center and will showcase its product’s ... conference. ClinCapture will also be presenting a scientific poster on Disrupting Clinical Trials ...
(Date:6/23/2016)...  Amgen (NASDAQ: AMGN ) today announced ... life sciences incubator to accelerate the development of new ... at QB3@953 was created to help high-potential life science ... early stage organizations - access to laboratory infrastructure. ... two "Amgen Golden Ticket" awards, providing each winner with ...
(Date:6/22/2016)... , June 22, 2016 Research and ... Global Markets" report to their offering. ... billion in 2014 from $29.3 billion in 2013. The market is ... of 13.8% from 2015 to 2020, increasing from $50.6 billion in ... projected product forecasts during the forecast period (2015 to 2020) are ...
Breaking Biology Technology: