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'Fish guts can tell which species will survive climate change' May 14,2012   |  Source: Zee News

Scientists have discovered that the gastrointestinal system of fish is much more sensitive to temperature changes than previously thought, a finding they say could help predict which species would survive climate change and which would not.

"Our work is largely about trying to identify the physiological bottlenecks, in other words which parts of the body will fail first -- whether the heart or the gut is the most sensitive part of the system," study researcher Albin Grans, of the University of Gothenburg, in Sweden, was quoted as saying by LiveScience.

The scientists, who studied gut functions of various fish species to better understand what will happen to different species when the climate changes, found that the gut was actually the most temperature-sensitive organ in many fishes.

Grans said: "When the temperature of the water rises, the fish's body temperature climbs, activity in the gut increases, and more energy is needed to stay healthy.

"Since changes in body temperature affect virtually all of a fish's organs, it's surprising that we know so little about how temperature changes impact on their physiology."

For their study, the researchers studied guts of sculpin, sturgeon and rainbow trout in sea and freshwater environments in Sweden, California and


© 1998-2012 Zee News Limited (An Essel Group Company)

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