Navigation Links
'Hot spots' the key to controlling European carp in Australia
Date:11/8/2007

The on-going drought in Australia is having at least one positive spin-off - fewer carp are being distributed through inland waterways.

NSW Department of Primary Industries (DPI) fisheries researchers at Narrandera are identifying carp hot-spots in conjunction with the Invasive Animals Cooperative Research Centre (CRC).

Known as the vermin of inland waterways, carp became a major pest in Australia in the 1970s and now make up 80 to 90% of the fish in inland NSW.

NSW DPI researchers are identifying what are believed to be a relatively small number of locations where huge numbers of carp breed.

Fisheries scientist Dean Gilligan said the carp are concentrated in these hot-spots, and at one site there were about 30,000 carp larvae per megalitre of water.

Ten hot-spots have been identified, and four of these are internationally recognised wetlands - the Gwydir wetlands, Namoi wetlands, Barmah-Millewa forest and the Macquarie Marshes.

The researchers estimate there are around 20 major carp breeding hot-spots within the Murray Darling Basin.

They have found that carp like to breed in shallow, swampy areas that are regularly inundated by water - heavy rain and floods enable the carp to disperse into adjoining river channels.

The results support the larval drift theory, indicating the carps need for high water flow events to disperse their larvae.

The drought initially hindered this research, because the lack of water flow meant carp movements could not be tracked.

However, the researchers then used NSW DPIs records of freshwater fish to map the distribution of baby carp over the last 13 years.

It is expected that targeted carp control at these major breeding locations will have a huge impact on massively reducing carp numbers in regional waterways.

The CRC is currently investigating a range of promising control measures, including techniques designed to trap carp but not native fish, and also methods to sabotage carp breeding.


'/>"/>

Contact: Joanne Finlay
joanne.finlay@dpi.nsw.gov.au
61-262-913-171
New South Wales Department of Primary Industries
Source:Eurekalert

Related biology news :

1. Hydrothermal vents: Hot spots of microbial diversity
2. Controlling for size may also prevent cancer
3. UT Southwestern researchers identify hundreds of genes controlling female fertility
4. Last chance for media to register for ECCO 14 -- the European Cancer Conference
5. 2 French scientists win European award for communication
6. Three-way mating game of North American lizard found in distant European relative
7. European lead in reading past climates from ice cores
8. Invasive Australian jellyfish sighted in Gulf of Mexico in summer 2007
9. Emory paleontologist reports discovery of carnivorous dinosaur tracks in Australia
10. Australian researchers develop treatment to treat obesity
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/16/2017)... 2017  Veratad Technologies, LLC ( www.veratad.com ), an ... identity verification solutions, announced today they will participate as ... 15 thru May 17, 2017, in Washington ... Center. Identity impacts the lives of ... quickly evolving digital world, defining identity is critical to ...
(Date:4/24/2017)... WASHINGTON , April 24, 2017 ... counsel and partner with  Identity Strategy Partners, LLP ... "With or without President Trump,s March 6, ... Foreign Terrorist Entry , refugee vetting can be instilled ... refugee resettlement. (Right now, all refugee applications are ...
(Date:4/17/2017)... Florida , April 17, 2017 NXT-ID, ... technology company, announces the filing of its 2016 Annual Report on ... and Exchange Commission. ... on Form 10-K is available in the Investor Relations section of ... as on the SEC,s website at http://www.sec.gov . ...
Breaking Biology News(10 mins):
(Date:10/12/2017)... ... October 12, 2017 , ... ... of a United States multicenter, prospective clinical study that demonstrates the accuracy ... test capable of identifying clinically significant acute bacterial and viral respiratory tract ...
(Date:10/11/2017)... ... 11, 2017 , ... The CRISPR-Cas9 system has ... and avoiding the use of exogenous expression plasmids. The simplicity of programming this ... gain-of-function studies. , This complement to loss-of-function studies, such as with RNAi ...
(Date:10/11/2017)... LAGUNA HILLS, Calif. , Oct. 11, 2017 /PRNewswire/ ... London (ICR) and University of ... tool to risk-stratify patients with multiple myeloma (MM), in a ... . The University of Leeds is ... Myeloma UK, and ICR will perform the testing services to ...
(Date:10/10/2017)... ... October 10, 2017 , ... ... targeted antibody-drug conjugate (ADC) therapeutics, today confirmed licensing rights that give it ... Nanoparticle), a technology developed in collaboration with Children’s Hospital Los Angeles (CHLA). ...
Breaking Biology Technology: