>
 
> FishingBoating-World.com
 
 
News Home Newsletters Photo Gallery Powerboat-World Australian Cruising World Cruising MarineBusiness-World Animated Knots
Video Gallery MarineBusiness-World
Sail-World.com : Invasive Tilapia to be tracked by DNA
Invasive Tilapia to be tracked by DNA


'Tilapia'    Department of Fisheries Western Australia
One of North Queensland's most invasive species of pest fish could be tracked by its own DNA, in a new collaborative project between researchers from James Cook University and the Queensland Department of Agriculture, Fisheries and Forestry.

Professor Dean Jerry, Deputy Director of JCU’s Centre for Sustainable Tropical Fisheries and Aquaculture, along with DAFF fisheries researcher Dr Richard Saunders, have been awarded a grant from the Invasive Animals Cooperative Research Centre to conduct the two-year project.

Tilapia, which are declared noxious in Queensland, are freshwater fish that inhabit shallow streams, ponds, rivers and lakes.

Professor Jerry said tilapia, a highly aggressive and invasive fish species originating from Africa, were becoming particularly prevalent in warm water habitats throughout North Queensland and were threatening to invade streams and rivers in the Gulf of Carpentaria. This species has been shown to harass and prey on native aquatic fauna.

Professor Jerry said the project, eDNA as a Surveillance Tool for Tilapia, would help to track the species’ movements.

'Environmental DNA, or eDNA, is the material that is floating around in the aquatic environment in the form of free-cells shed or excreted from aquatic organisms,' he said.

'It could be individual cells sloughed from the skins, fecal material or mucus, for example.

'DNA technology has become so powerful over recent years that it is now possible to use eDNA as a detection and water body monitoring tool for a number of fish species, including that of invasive species.'

Professor Jerry said researchers would collect two-litre water samples from bodies of water and filter it to concentrate cells.

'We then extract the DNA and test the sample against tilapia species-specific DNA probes, which will indicate to us whether or not DNA from our target organism is present in the sample or not,' he said.

'If the test is positive, it shows that our target organism inhabits the water body.

'The advantage of this technology is that it will reduce the requirement to use previous labor-intensive sampling approaches such as electrofishing or netting, which are relatively expensive and often ineffective at detecting fish with low abundance.'

The work will take place in a range of North Queensland eastern streams, as well as potential invasion front sites in the Gulf of Carpentaria. Sampling and development of the test will occur over the next two years.

Professor Jerry said the use of eDNA as a surveillance tool for tilapia and other pest fish species was an innovative approach.

'It may enable new outbreaks to be detected much earlier than by using traditional methods, and potentially at a stage where the populations are geographically contained and not well established,' he said.

He said the project eventually aimed to develop a quick, effective DNA-based test that could be used to routinely monitor water bodies where tilapia were not currently present.

Collaborator Dr Saunders said the value of developing this DNA technology for Queensland was the rapid detection of new water bodies where tilapia had invaded, allowing a quick response which may help eradication efforts before the fish populations reached a level where eradication becomes impossible.

James Cook University


by Caroline Kaurila

  

Click on the FB Like link to post this story to your FB wall

http://www.fishingboating-world.com/index.cfm?nid=108596

2:44 PM Fri 19 Apr 2013GMT


Click here for printer friendly version
Click here to send us feedback or comments about this story.







FishingBoating-World















A Mooring in Iceberg Alley by Rebecca Jackson,






Predictwind helps you pick the best time to depart by Richard Gladwell Sail-World.com/nz,
































Dispersant from Deepwater Horizon Spill persist in environment by Woods Hole Oceanographic Institution,








Understanding the Ocean's role in Greenland Glacier melt by Woods Hole Oceanographic Institution (WHOI),


Dangerous conditions for boating on entire NSW Coast by Transport Roads and Maritme Services,




ECOfishers and AMA to establish NSW Fisheries Taskforce
New-to-New Zealand products at the Auckland On Water Boat Show
Auckland on the Water Boat Show: Two new Bavaria yachts on display
You are invited to a Boating Safety Conference in Auckland
Taiwan's first marina a Superior effort *Feature
Protecting lagoons could be key to saving Manta Rays
Baby Nemos finding their way home
Portland’s new state-of-the-art boat ramp officially opened
Dangerous conditions forecast for NSW boaters
New fishing pontoons for Warrnambool’s Merri river
Whale freed from rope at Byron Bay
Tidal current installations will increase boating hazards
Dangerous conditions for NSW coastal boaters from Thursday
Bar Crusher's fully-enclosed fishing weapons
World premieres and national debuts for Sydney International Boat Show
Marine Auctions experiencing rising tide of interest *Feature
Man fined $2000 for hawking abalone from an East Gippsland reef
New catfish species ‘hooked’ in North Qld
Emperor penguins in danger of dramatic declines
Tags reveal Chilean devil rays are among ocean's deepest divers
Auckland On Water Boat Show to hold world record attempt   
Alvin's Animals - Previously unknown species discovered   
Zodiac at Sydney International Boat Show 2014 – Australian   
Gold Coast International Marine Expo - Exhibitor space filling fast   
Lessons from the West: Great Barrier Reef in danger   
If we stop killing parrotfish we can bring back Caribbean coral reefs   
Decade of benefits for the Great Barrier Reef   
Climate change could stop fish finding their friends   
Ceramic coated exhaust manifolds reduce engine bay temps on superboat   
Reminder of safe distance requirements for whales   
Changes to Australian bass closed season   
Commercial fishers on shore for mullet season   
Management measures implemented to reduce large whale entanglements   
Scientists use JeDI to create world’s first global jellyfish database   
Sanctuary Classic off to a great start!   
New Murray cod limits proposed to improve fishery   
Up close and personal with whales on the Gold Coast   
SA Marina Day encourages South Australians to enjoy their marinas   
Southport Yacht Club raffle: Dusit Thani, BRIG Falcon, Marriott stay   
Fish stocks Northeast Atlantic recover, overfishing in Mediterranean   


For this week's complete news stories select    Last 7 Days
   Search All News
For last month's complete news stories select    Last 30 Days
   Archive News







Sail-World.com  


















Switch Default Region to:

Social Media

Asia

Australia

Canada

Europe

New Zealand

United Kingdom


http://www.sail-world.com/event_images/image/Twitter_logo_small.png http://www.sail-world.com/event_images/image/FaceBook-icon.png  http://www.sail-world.com/event_images/image/RSS-Icon.png

United States

Cruising Northern

Cruising Southern

MarineBusiness World

PowerBoat World

FishingBoating World

 

Contact

Commercial

News

Search

Contact Us

Advertisers Information

Submit news/events

Search Stories/Text

Feedback

Advertisers Directory

Newsletter Archive

Photo Gallery

 

Banner Advertising Details

Newsletter Subscribe

Video Gallery

Policies

 

 

 

Privacy Policy

 

 


Cookie Policy

 

 



This site and its contents are © Copyright TetraMedia and/or the original author, photographer etc. All Rights Reserved.  Photographs are copyright by law.  If you wish to use or buy a photograph contact the photographer directly.
XLXL NEW FBW
LocalAds   DE  ES  FR  IT