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:2/3/2016)... -- --> --> Fourth quarter 2015: ... 1,187% compared with fourth quarter of 2014. Gross margin was ... 30.0). Earnings per share increased to SEK 6.39 (loss: 0.49). ... 74.7). , --> --> ... M (233.6), up 1,142% compared with 2014. Gross margin was ...
(Date:2/2/2016)... This BCC Research report provides a ... the recent advances in high throughput ‘omic platforms ... forward. Includes forecast through 2019. Use ... opportunities that exist in the bioinformatic market. Analyze ... well as IT and bioinformatics service providers. Analyze ...
(Date:2/1/2016)... Rising sales of consumer electronics ... intuitive gesture control market size ... consumer electronics coupled with new technological advancements to drive ... through 2020   --> ... advancements to drive global touchfree intuitive gesture control market ...
Breaking Biology News(10 mins):
(Date:2/8/2016)... ... 08, 2016 , ... Information Management Services ( IMS ) is pleased to ... completely new technical foundation and is so significant it was endowed with a new ... speed for search results, a streamlined layout and a more intuitive format for navigating ...
(Date:2/8/2016)... Conn. , Feb. 8, 2016  NanoViricides, Inc. (NYSE MKT: ... its CEO, Eugene Seymour , MD, MPH, will present information ... at the Waldorf-Astoria Hotel in New York City ... will be in the Windsor Room at 5:30PM EST. Registered attendees ... New York City . --> ...
(Date:2/8/2016)... , February 8, 2016 ... ("Atlas Genetics" or the "Company"), the ultra-rapid Point-Of-Care (POC) molecular ... CE Mark its Chlamydia trachomatis (CT) test to be launched ... the IVD Directive (98/79/EC), the CT test is now cleared ... --> The launch of the io® CT ...
(Date:2/5/2016)... , Feb. 5, 2016 ATCC, the premier ... to assist the medical and life science researchers that ... Virus infection.   CDC website . ... Zika virus is a single-stranded RNA virus of ... West Nile, Dengue and Chikungunya Viruses. Zika virus is ...
Breaking Biology Technology: