HOME >> BIOLOGY >> NEWS
Sneak copulations and the demise of the integrity of wild salmon populations

Releases of cultured organisms threaten native biodiversity and the integrity of natural communities. In species such as farm Atlantic salmon (Salmo salar L.) though, it was believed that the threat from the spread of domesticated traits in the wild was reduced by the relatively poor reproductive success of males escaping from marine netpens.

Recent evidence in a paper soon to appear in Ecology Letters by Garant, Fleming, Einum & Bernatchez, however, indicates that, similarly to wild salmon, the male offspring of farm spawners may mature precociously in freshwater, and use their small size to sneak copulations, darting in next to the female's ovipositor at spawning and fertilizing large numbers of eggs.

In fact, such farm males are more successful at sneaking copulations, participating in more spawning events and having higher fertilization success than wild males. The rapid maturity, combined with higher growth rates and reproductive performance of male offspring of farm origin, will thus not only perpetuate, but speed the gene flow from farm fish into native salmon populations.


'"/>

Contact: Emily Davis
emily.davis@oxon.blackwellpublishing.com
Blackwell Publishing Ltd.
22-May-2003


Page: 1

Related biology news :

1. New study to investigate demise of coral reef ecosystems
2. Out-of-balance ecosystems play role in demise of amphibian populations
3. Rumors of male chromosomes demise greatly exaggerated, study finds
4. UGA scientists discover gene that maintains genome integrity by limiting DNA replication
5. The skins acid coating: SFVAMC researchers explain its origin and how it maintains skin integrity
6. PNNL lands $10.3 million NIH biodefense contract to unlock proteomes of salmonella and pox
7. Flame retardant levels much higher in farmed salmon
8. Common worm provides insights into salmonella virulence
9. Policy review in Science calls for Bush Administration to protect wild salmon
10. Aquatic scientists divided on role of sea lice from salmon farms in decline of native salmon in B.C.
11. Farmed salmon more toxic than wild salmon, study finds

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:3/27/2021)... ... March 25, 2021 , ... Phlexglobal announced ... Planet Group, has selected Phlexglobal and its innovative regulatory SaaS software, PhlexSubmission, as ... a comprehensive review of five regulatory software companies, with the review team including ...
(Date:3/27/2021)... ... 25, 2021 , ... The 2021 Virtual Conference on Clinical Trial Supply-Europe ... More and more, clinical trial supply conferences are featuring speakers and forums that ... Asymmetrex’s founder and CEO, James L. Sherley, M.D., Ph.D., presented a talk ...
(Date:3/23/2021)... ... March 23, 2021 , ... G-CON Manufacturing (G-CON), the ... by Matica Biotechnology (Matica Bio), a contract development and manufacturing organization (CDMO) specializing ... the cleanroom build out for its new GMP production facility in College Station, ...
Breaking Biology News(10 mins):
(Date:3/27/2021)... ... March 24, 2021 , ... ... Life Sciences and Healthcare firms of all sizes, adds depth to its team ... specialist. Pardillo, who earned his doctorate in computational chemistry from Florida International University ...
(Date:3/27/2021)... ... March 24, 2021 , ... ABI Wellness, ... and reporting approach designed under CEO Mark Watson, today announced a webinar dedicated ... featuring guest speakers Dr. Cameron Clark, Neuropsychologist and Founder of Sharp Thinking, and ...
(Date:3/27/2021)... ... ... The Xtalks editorial team is pleased to announce the launch of the ... joined by editorial team members Ayesha Rashid, Sydney Perelmutter and Mira Nabulsi to discuss ... including insights from industry experts. , The Xtalks Life Science podcast will feature ...
(Date:3/23/2021)... Conn. (PRWEB) , ... March 23, 2021 , ... ... develops solutions for characterizing microbiome populations down to the strain level, recently unveiled ... applications. , Not all microbes are created equal: some are easy to ...
Breaking Biology Technology:
Cached News: