When do swan river prawns run

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Home Species Prawn Prawn recreational fishing. But then, as Dr Tweedley noted, the Swan was hit by two unusual weather events — a cold winter that sent water temperatures two degrees lower than normal and an extreme downpour in early The episode serves as a reminder of the problems that have long bedevilled the Swan and Canning River system.

For all the good work to improve its condition, the Swan remains chronically exposed to environmental events and the effects of urbanisation. Pat Hart, a former director of the trust who is currently the chair of the South East Regional Centre for Urban Landcare, said she was worried about the state of the Swan. Ms Hart said the decision by the previous government to axe the Swan River Trust as a stand-alone entity and roll it into the broader public sector was a big mistake that would come back to haunt politicians.

She said the dismantling of the trust robbed the river of its guardian and biggest advocate. Of particular concern to Ms Hart was the absence of information about the health of the Swan — she said it was now harder than ever to know whether it was in good condition.

Prawns at a fifth Queensland farm have been destroyed after they tested positive for an exotic virus new to Australia. Biosecurity officials have been monitoring farmed and wild prawns in southeast Queensland after white spot disease was detected in the Logan River area, south of Brisbane, last month. Four infected prawn farms close to the river and each other were initially destocked, but a fifth one - about four kilometres downstream - tested positive a few days ago.

Testing continues to determine the spread of the virus, which has severely affected farmed prawn production overseas. It has already been found in wild prawns in the Logan River. Prawns caught in Moreton Bay, off Brisbane, and in the Brisbane River, are also being screened for the virus, which is not harmful to humans but can cause high mortality rates, especially in farmed prawns. Close navigation menu Subscribe Log In.