Known as the vermin of inland waterways, carp became a major pest in Australia in the 1970’s and now make up 80 to 90% of the fish in inland NSW.
The reduced numbers of carp is great news for native fish, fishers and for the inland waterways of NSW.
DPI researchers at Narrandera, in conjunction with the Invasive Animals Cooperative Research Centre (CRC), are identifying what are believed to be a relatively small number of locations where huge numbers of carp breed.
Their research indicates that carp like to breed in the inland waterways that are most precious to us - our wetlands.
The concentration of carp in these hot-spots is astounding; at one site there are around 30,000 carp larvae per mega litre 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.
In total, it is estimated there are around 20 major carp breeding hot-spots within the Murray Darling Basin.
Researchers 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.
These results support the larval drift theory, indicating the carp’s 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, researchers were able to access NSW DPI’s records of freshwater fish to map the distribution of baby carp over the last 13 years.
Researchers from NSW DPI and the CRC expect that targeted carp control at these major breeding locations will have a huge impact on massively reducing carp numbers throughout regional waterways.For more information about NSW DPI research into carp control, see
Joanne Finlay | EurekAlert!
New Study Will Help Find the Best Locations for Thermal Power Stations in Iceland
19.01.2017 | University of Gothenburg
Water - as the underlying driver of the Earth’s carbon cycle
17.01.2017 | Max-Planck-Institut für Biogeochemie
An important step towards a completely new experimental access to quantum physics has been made at University of Konstanz. The team of scientists headed by...
Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...
Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.
While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...
Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales
Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...
Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.
As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...
19.01.2017 | Event News
10.01.2017 | Event News
09.01.2017 | Event News
20.01.2017 | Awards Funding
20.01.2017 | Materials Sciences
20.01.2017 | Life Sciences