The Pipi, Plebidonax
deltoides, is also known as the Goolwa cockle, clam and ugari. It is
prized by many cultures for eating, often in soups and chowders.
Australian aborigines have collected pipis and other shellfish for many thousands of years, and shells are found at middens along the coast. Pipis have been found on sandy
surf beaches in the tidal
Pipis belong to a group of shellfish known as bivalves. This group is characterised by having two shells joined by a hinge. The shell of the Pipi is essentially smooth, and the colour varies from tinted white through yellow and brown, to purple-blue. COMMERCIAL
AND RECREATIONAL
Pipis are harvested in New South Wales on a commercial basis to supply bait and for human consumption. BIOLOGY Research into the pipi in South Australia suggests that they mature at about 13 months (shell length about 36mm). They Grow to a maximum size of 60mm after 3 and a half years. Growth Varies according season and age, and most pipis range between 30 and 55mm. They live for gour or five years. The abundance of pipis fluctuates enormously. They produce huge numbers of young over a long spawning season, and age are able to repopulate quickly after periods of low abundance. THE EFFECTS OF HARVESTING A study to examine the effects of commercial pipi harvesting was completed in 1990. Areas where commercial harvesting occured were compared to places where no commercial activity took place. There seemed to be no decline in pipi density at those sites where commercial harvesting occured. BURY THE LITTLE ONES When you are collecting , make sure you re-bury the small pipis that you don't want. If you leave them on the sand they will probably die, and won't be there next time. INTERTIDAL PROTECTED AREAS Collecting of invertebrate animals, including, is prohibited in Intertidal Protected Areas, IPAs. There are currently 14 IPAs in the Sydney area, and more are planned soon for the rest of the coast. PENALTIES On the spot fines of $300 can be imposed for people who break the law. The Fisheries Management Act allows for fines as high as $10,000 for certain offences FURTHER INFORMATION Contact the nearest NSW Fisheries
offices or the Fisheries Information Service (02) 9566 7802
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