Navigation Links
A fisheries catch-22
Date:12/11/2008

Human impacts on the environment have reduced populations of wild species to dangerously low levels. Nowhere is this more apparent than in worldwide fisheries, where thanks to overfishing and habitat destruction, countless species and populations of fish are on the brink of disappearing forever. To attempt to mitigate the dire situation, captive breeding, the controlled breeding of organisms in protected environments, is regularly initiated.

Despite its popularity, does captive breeding actually work? In the current issue of Evolutionary Applications (1:4), Dr. Dylan Fraser of Dalhousie University provides a candid look at whether these breeding programs are fulfilling their mandates.

Using salmonids (the economically crucial group of fish that include salmon and trout) to illustrate his point, Fraser questions whether captive breeding is doing more harm than good. In his comprehensive review of over 300 papers, Fraser concludes that fish reared in captivity can rapidly lose the genetic diversity needed to adapt and survive in the wild, and that the rate of loss of diversity can both vary across breeding programs and be species specific. To complicate matters further, Fraser points out that that we simply do not know how captive-bred fish will perform once released back into the wild.

Unfortunately, without captive breeding to bolster their numbers, we may soon have too few individuals from which to repopulate disappearing fish populations, leaving us essentially in a fisheries catch-22.

Fraser concludes that not only do more data on the effects of captive breeding on the genetic diversity of fishes need to be collected, but also that alternatives to captive breeding, such as the live freezing of fish sperm of diverse genetic backgrounds, or the physical relocation of fish populations from one site to another, need more serious consideration.


'/>"/>

Contact: Finbar Galligan
fgalligan@wiley.com
44-018-654-76298
Wiley-Blackwell
Source:Eurekalert  

Page: 1

Related biology news :

1. Springer to publish Fisheries Science as of 2009
2. NC State takes research lead in protecting Puerto Ricos unique freshwater fisheries
3. New study offers solution to global fisheries collapse
4. LSU researchers challenge analyses on sustainability of Gulf fisheries
5. New tool for resolving fisheries conflicts
6. Fisheries should be regarded as a part of the maritime environment
7. Small-scale fishing in Mexico rivals industrial fisheries in accidental turtle deaths
8. Canadas pristine freshwater fisheries at risk
9. Canadas pristine freshwater fisheries at risk
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
A fisheries catch-22
(Date:4/26/2016)... LONDON , April 26, 2016 /PRNewswire/ ... Systems, a product subsidiary of Infosys (NYSE: ... partnership to integrate the Onegini mobile security platform ... http://photos.prnewswire.com/prnh/20151104/283829LOGO ) The integration ... security to access and transact across channels. Using ...
(Date:4/14/2016)... Israel , April 14, 2016 ... Authentication and Malware Detection, today announced the appointment of ... assumed the new role. Goldwerger,s leadership appointment ... on the heels of the deployment of its platform ... BioCatch,s behavioral biometric technology, which discerns unique cognitive and ...
(Date:3/23/2016)... 23, 2016 ... Gesichts- und Stimmerkennung mit Passwörtern     ... MESG ), ein führender Anbieter digitaler ... mit SpeechPro zusammenarbeitet, um erstmals dessen Biometrietechnologie ... die Möglichkeit angeboten, im Rahmen mobiler Apps ...
Breaking Biology News(10 mins):
(Date:5/26/2016)... ... 2016 , ... FireflySci has been manufacturing quartz and glass ... the globe. Their cute firefly logo has been spreading to more and more ... calibration standards that never require recalibration. These revolutionary standards have changed many ...
(Date:5/25/2016)... ... May 25, 2016 , ... The Ankle ... plating options designed to address fractures of the distal tibia and fibula. This ... Acumed Ankle Plating System 3 is composed of seven plate families that span ...
(Date:5/25/2016)... ... 25, 2016 , ... Scientists at the University of Athens say they have ... be hampering the research that could lead to one good one. Surviving Mesothelioma has ... now. , The team evaluated 98 mesothelioma patients who got a ...
(Date:5/25/2016)... ... May 25, 2016 , ... Biohaven Pharmaceutical Holding Company ... granted the company’s orphan drug designation request covering BHV-4157 for the treatment of ... the FDA. , Spinocerebellar ataxia is a rare, debilitating neurodegenerative disorder that ...
Breaking Biology Technology: