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!
One-third of recent global methane increase comes from tropical Africa
11.12.2019 | European Geosciences Union
The Antarctic: study from Kiel provides data about the structure of the icy continent
10.12.2019 | Kiel University
Graphene, a two-dimensional structure made of carbon, is a material with excellent mechanical, electronic and optical properties. However, it did not seem suitable for magnetic applications. Together with international partners, Empa researchers have now succeeded in synthesizing a unique nanographene predicted in the 1970s, which conclusively demonstrates that carbon in very specific forms has magnetic properties that could permit future spintronic applications. The results have just been published in the renowned journal Nature Nanotechnology.
Depending on the shape and orientation of their edges, graphene nanostructures (also known as nanographenes) can have very different properties – for example,...
Using a clever technique that causes unruly crystals of iron selenide to snap into alignment, Rice University physicists have drawn a detailed map that reveals...
University of Texas and MIT researchers create virtual UAVs that can predict vehicle health, enable autonomous decision-making
In the not too distant future, we can expect to see our skies filled with unmanned aerial vehicles (UAVs) delivering packages, maybe even people, from location...
With ultracold chemistry, researchers get a first look at exactly what happens during a chemical reaction
The coldest chemical reaction in the known universe took place in what appears to be a chaotic mess of lasers. The appearance deceives: Deep within that...
Abnormal scarring is a serious threat resulting in non-healing chronic wounds or fibrosis. Scars form when fibroblasts, a type of cell of connective tissue, reach wounded skin and deposit plugs of extracellular matrix. Until today, the question about the exact anatomical origin of these fibroblasts has not been answered. In order to find potential ways of influencing the scarring process, the team of Dr. Yuval Rinkevich, Group Leader for Regenerative Biology at the Institute of Lung Biology and Disease at Helmholtz Zentrum München, aimed to finally find an answer. As it was already known that all scars derive from a fibroblast lineage expressing the Engrailed-1 gene - a lineage not only present in skin, but also in fascia - the researchers intentionally tried to understand whether or not fascia might be the origin of fibroblasts.
Fibroblasts kit - ready to heal wounds
03.12.2019 | Event News
15.11.2019 | Event News
15.11.2019 | Event News
10.12.2019 | Architecture and Construction
10.12.2019 | Information Technology
10.12.2019 | Life Sciences