High-power Sonar Did Not Harm Fish; 'Some Small Behavioral Responses'

High-power Sonar Did Not Harm Fish; 'Some Small Behavioral Responses'

Source: Underwatertimes

7/5/2007

A new University of Maryland study in the July issue of the Journal of the Acoustical Society of America reports that high powered sonar, like that used by U.S. Navy ships, did not harm test fish, including their hearing, in a controlled setting.

The research team, headed by Arthur N. Popper, biology professor at the University of Maryland and expert in fish hearing, and Michele Halvorsen, Ph.D., University of Maryland Research Associate, found that exposure to high intensity, low frequency sonar did not kill rainbow trout used for testing, nor did it damage the fishes' auditory systems, other than for a small and presumably temporary decline in hearing sensitivity.

It is a finding that Popper says "should not be extrapolated to other fish species or the effects of other sound sources."

Cause for Concern

There is considerable concern that human-produced (anthropogenic) sounds added to the environment could have damaging effects on marine life. While much of the interest has focused on marine mammals, such as dolphins and whales, there is growing interest in the effects of these sounds on fish.

"The effects of sound on fish could potentially include increased stress, damage to organs, the circulatory and nervous systems," says Popper. "Long-term effects may alter feeding and reproductive patterns in a way that could affect the fish population as a whole."

Trout, Rainbow

Continue...

News Id		Source	Stamp	country
4426	Manhattan man charged after dropping detergent in fish tank, killing fish and coral	ksnt	2021-03-10	US
4427	New Mexico teen catches possibly record breaking fish, releases it before getting official weight	Fox News	2021-03-07	US
4428	No fish tale: Missouri angler catches huge invasive black carp	fox2now	2021-03-09	US
4429	Norway's salmon rot as China takes revenge for dissident's Nobel Prize	independent	2011-10-23	UK
4430	Research Finds Fish Behavior May Seal Their Fate	underwatertimes	2011-10-04	CA
4431	The World's Largest Floating Fish Factory	gizmodo	2011-10-03	US
4432	Pros Carr, Bradley Qualify For Bassmaster WS National Championship	underwatertimes	2011-10-02	CA
4433	Mystery of Canada's missing salmon continues	nature	2011-09-28	CA
4434	Illusion Of Plenty' Masking Fish Population Collapse Off California Coast	Underwatertimes	2011-09-27	US
4435	Wind Whips Angler Teddy Carr At Oneida Lake	Underwatertimes	2011-09-24	US
4436	Study Finds Aquarium Fishes Are More Aggressive In Reduced Environments	underwatertimes	2011-09-23	US
4437	Small Fish Recover Faster Than Large Fish	Underwatertimes	2011-09-21	US
4438	The Science Behind the Fishy Smell in Smelly Fish	miaminewtimes	2011-09-20	CA
4439	Anglers Bradley, Carr Land Enough Fish To Qualify For Regional Bassmaster Event	underwatertimes	2011-09-19	US
4440	Bay of Fundy farmed salmon found in rivers	CBC News	2011-09-16	CA
4441	Fish shrinkage probed in lab	BBC News	2011-09-18	NO
4442	Salmon And Other Fish Predators Rely On No Guts, No Glory Survival Tactic	underwatertimes	2011-09-15	US
4443	Climate change boon to UK seafood	BBC News	2011-09-15	UK
4444	World's largest fishing lure, at 355 pounds, is a real whopper	petethomasoutdoors	2011-09-13	US
4445	Ancient Toothy Fish Found in Arctic—Giant Prowled Rivers	National Geographic News	2011-09-12	US
4446	The World's Worst Place To Catch Fish	Underwatertimes	2011-09-07	US
4447	Colossal Aggregations Of Giant Alien Freshwater Fish As A Potential Biogeochemical Hotspot	Underwatertimes	2011-10-06	GE
4448	Iceland joins alliance to tackle ‘ghost’ fishing gear abandoned at sea	thegrocer	2021-03-10	UK
4449	Dozens change name to salmon	Taipei Times	2021-03-18	TW
4450	Рыбаки предупредили о возможных сбоях в добыче самой дешевой рыбы	rbc	2021-03-17	RU

177 of [222 - pages.]