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:2/8/2016)... February 8, 2016 Worldcore ... which presents innovation for clients, comfort and unbeatable ... VoiceKey. --> Worldcore is the ... for clients, comfort and unbeatable security, with a ... Worldcore is the first EU-regulated ...
(Date:2/3/2016)... , February 4, 2016 --> ... to SEK 1,351.5 M (105.0), up 1,187% compared with fourth quarter of ... amounted to SEK 517.6 M (loss: 30.0). Earnings per share ... activities was SEK 537.4 M (neg: 74.7). , ... , Revenues amounted to SEK 2,900.5 M (233.6), up 1,142% compared with ...
(Date:2/3/2016)... http://www.researchandmarkets.com/research/d8zjcd/emotion_detection ) ... "Emotion Detection and Recognition Market by Technology ... Tools (Facial Expression, Voice Recognition and Others), ... Global forecast to 2020" report to ... ) has announced the addition of the ...
Breaking Biology News(10 mins):
(Date:2/10/2016)... FL (PRWEB) , ... February 10, 2016 , ... ... in regenerative medicine, has announced a new agreement with Singapore-based Global Stem Cells ... physicians from the Philippines, Thailand and Singapore in the latest adipose and bone ...
(Date:2/9/2016)... ... 2016 , ... Date and time: March 1, 2016, 5:30 ... Biotechnology Center of Bucks County, 3805 Old Easton Road, Doylestown, PA 18902. , ... an open house for participants to learn about a new Master of Biomedical ...
(Date:2/9/2016)... ... February 09, 2016 , ... The publishing industry has ... publishing is one of the popular publication models that has received wider acknowledgement ... and 3000+ International Conferences across the globe, OMICS International is all ...
(Date:2/9/2016)... 9, 2016 Three-Year Initiative Supports Next ... Take Part in Life-Changing Camp Experiences ... to positively affect the lives of children born with rare diseases, ... SHPG ) is announcing a new initiative designed to positively ... as the future of rare disease care. --> To ...
Breaking Biology Technology: