Navigation Links
Fish migrate to safer environments
Date:3/1/2013

Research now reveals that fish can migrate to avoid the threat of being eaten. A new study from Lund University in Sweden shows that roach fish leave lakes and move into surrounding streams or wetlands, where they are safer from predators.

Every year, millions of animals migrate worldwide. In most cases, this is due to a shortage of food or other environmental factors. However, few research studies have focused on migration as a strategy to avoid predators. It is not easy to measure and quantify the risk of an animal being eaten.

"Our findings are therefore quite unique", says Ben Chapman, a researcher from the Department of Biology at Lund University.

In collaboration with Danish colleagues, the researchers at Lund University have published the results of their study. These show that fish, in this case roach, flee from a lake to surrounding streams and wetlands when there are a large number of cormorants hunting in the lake. Ben Chapman and his colleagues note that their findings are among the first evidence that the threat of predators can be a reason for seasonal migration in animals.

The researchers used an inventive method to track the fate of individual roach. They individually marked thousands of fish with a little chip resembling a barcode, and then went to the cormorants' resting places and scanned the earth for chips in the birds' excrement i.e. the remains of the fish that have passed through the birds' digestive systems. In this way, the researchers have been able to obtain large quantities of data on which fish were eaten. It emerged that it was mostly larger roach that fell victim to the cormorants.

The fieldwork has been carried out in the Danish lakes of Viborg and Loldrup on Jutland. In the next fieldwork season, the researchers plan to expand their work to include Krankesjn lake in southern Sweden and to investigate whether fish can change their migration patterns in response to increasing numbers of predators.


'/>"/>
Contact: Ben Chapman
ben.chapman@biol.lu.se
46-736-643-608
Lund University
Source:Eurekalert

Related biology news :

1. Global warming has driven Europes mountain plants to migrate 2.7 meters upwards in 7 years
2. BYU study: Using a gun in bear encounters doesnt make you safer
3. New antibiotic could make food safer and cows healthier
4. Wayne State University researchers program targets safer river fishing, anglers health
5. Dual action polyclonal antibody may offer more effective, safer protection against osteoporosis
6. Safer spinach? Scientists technique dramatically reduces E. coli numbers
7. Salk scientists develop faster, safer method for producing stem cells
8. New technique could make cell-based immune therapies for cancer safer and more effective
9. Survival of the fittest -- ESF hosts session on the challenges of life in extreme environments
10. Newfound gene may help bacteria survive in extreme environments
11. Southampton to help develop new crops for water-stressed environments
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/13/2017)... 13, 2017  RSA Conference -- RSA, a Dell ... designed to enhance fraud detection and investigation across ... RSA Fraud & Risk Intelligence Suite. The new ... additional insights from internal and external sources as ... their customers from targeted cybercrime attacks. ...
(Date:2/8/2017)... Feb. 7, 2017  Aware, Inc. (NASDAQ: AWRE ... reported financial results for its quarter and year ended December ... of 2016 was $3.9 million compared to $6.9 million in ... quarter of 2016 was $0.6 million compared to $2.6 million ... fourth quarter of 2016 was $0.5 million, or $0.02 per ...
(Date:2/7/2017)... 2017 Zimmer Biomet Holdings, Inc. (NYSE and ... present at the LEERINK Partners 6th Annual Global Healthcare ... Wednesday, February 15, 2017 at 10 a.m. Eastern Time. ... can be accessed at http://wsw.com/webcast/leerink28/zbh .  The webcast ... Zimmer Biomet,s Investor Relations website at http://investor.zimmerbiomet.com . ...
Breaking Biology News(10 mins):
(Date:2/24/2017)... , Feb. 24, 2017  OncoSec Medical Incorporated ("OncoSec") ... will host a Key Opinion Leader event to highlight ... oral and poster presentation at the upcoming 2017 ASCO-SITC ... KOL event will be held in-person and via live ... / 9:00 AM PST at the Lotte New York ...
(Date:2/23/2017)... Feb. 23, 2017  MIODx announced today that ... key immunotherapy technologies from the University of California, ... method to monitor a patient for response to ... CTLA-4.  The second license extends the technology with ... likely to have an immune-related adverse event (IRAE) ...
(Date:2/23/2017)... ... February 23, 2017 , ... Baltimore ... multiple immunoassay-based threat detection technologies by researchers from the Pacific National Northwest ... detection technology was found to have the best level of detection (LOD) ...
(Date:2/23/2017)... , Feb. 23, 2017 Aviva ... tools, announced the acquisition of GenWay Biotech Incorporated, ... comprehensive service and product offering for both the ... will facilitate growth and enhance capabilities for both ... and ELISA assays will nicely complement ASB,s objective ...
Breaking Biology Technology: