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Smooth-shelled, body which distinguishes it from the spiny freshwater crayfish, which have spines and nodules on the body. Yabbies do not have a skeleton (internal bone structure), but have an exterior hard shell, known as an exoskeleton. Colour varies widely depending on location, season and water conditions, usually a drab olive, dun or light brown, but can range from black, ochre-yellow, brown, red or blue, with several colours in a single species, differing colours on the body and claws, or different body colours in the one locality. Click through for the full article
Source: http://www.nre.vic.gov.au/
Reproduction in yabbies is primarily related to water temperatures and day length. Research has shown that mating begins in the spring and early summer when water temperatures reach above 15oC and day length has increased. Spawning reaches its peak between October and January. Females often spawn two or more times in one season. Fertilised eggs may be identified by their colour. Approximately 2mm in length and oval in shape, the fertilised eggs are usually olive green in colour. The number of fertilised eggs carried by the female ranges from 100 to 300 for a young female, to more than 100 for an older (larger) female.
The Yabbie, Cherax destructor, is native to south-eastern Australia and is present in waterways throughout the state. Yabbie farming commenced during the early 1980s in South Australia. There are now close to 400 registered growers and this figure is rising. However there are only a modest number of yabbie growers producing on a commercial scale. Click through for the full article Source: http://www.pir.sa.gov.au/
The expected lead time to commercial production is around 12 months and the estimated yield once established is between 750 and 1500 kg per hectare.
No Information available at this time
Applicants for a new aquaculture licence should read through the following information. Licence application forms can be obtained from the Fisheries Victoria Aquaculture Unit head office or from regional NRE offices. Click through for the full article Source: http://www.nre.vic.gov.au/
No Information available at this time
Victorian Yabby Aquaculture Development Strategy The preparation of the Victorian Aquaculture Development Strategy has involved the willing and generous participation of many members of the Victorian aquaculture industry and a number of Government agencies, including the Marine and Freshwater Resources Institute, the Victorian Aquaculture Council and the Freshwater Crayfish Growers Association. Their efforts and input to this point have been invaluable and are acknowledged. Click through for the full article Source: http://www.nre.vic.gov.au/ |
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