Please select your home edition
Edition
Guy Nowell - Red 728

Warning issued after invasive crab species found at Mosman Bay

by Department of Fisheries WA on 2 Nov 2012
Asian Paddle Crab Brody Laroux
The Department of Fisheries Western Australia is calling for fishers’ assistance in reporting any unusual crabs they find when fishing in the Swan River, following the discovery of an Asian paddle crab – a highly invasive marine pest.

A single specimen of the non-endemic pest species Charybdis japonica has been positively identified, after it was captured by a recreational fisherman at Mosman Bay.

Biosecurity Section Leader Victoria Aitken said several follow-up surveys of the local waters, where the pest crab was found, had not located any further specimens, although public help was now critical in reporting any further possible specimens.

'Anyone who suspects they have found this species is asked to call our Fishwatch reporting line on 1800 815 507 or email biosecurity@fish.wa.gov.au,' Ms. Aitken said.


This Asian paddle crab is of particular concern and a biosecurity risk because:

- It can carry a crustacean virus that could potentially harm native prawns, crabs and lobsters. This nationally notifiable disease has not been found to date in Australian wild populations.

- These crabs are highly aggressive, and predate on food sources used by native crab species (including blue swimmer crabs), with the potential to outcompete them.

Ms. Aitken also recommended that this species of crabs not be eaten, as there had been some cases overseas of people becoming ill.

'Like any aquatic pest, once established it is essentially impossible to eradicate,' she said.

'Since the Asian paddle crab was first detected in New Zealand, in 2000, it has become widespread in parts of the North Island. This is why we are treating this situation very seriously, in order to prevent the same thing happening here.'

Fishers are urged to take a look at any small crabs they catch and, if they think they have caught the pest, they should retain that crab and contact FishWatch on 1800 815 507, prior to coming ashore or as soon as possible afterwards, so a Fisheries and Marine Officer can make contact and provide further advice.

The Asian paddle crab is smaller than the blue swimmer crab; adults have a shell width of 120 millimetres, it has six distinct sharp spines each side of its eyes, with spines also between the eyes. Its colour can vary. A fact sheet is available Dept of Fisheries WA website
Make Fast MooringsAbell Point Marina 660x82 MoorHella Marine - July 2016

Related Articles

Around Australia record breaker – with Mercury FourStrokes
In the Southern Ocean Mark was often battling eight metre seas – a six metre swell with two metres of chop on top. Mark Ratchford is calling it his ‘huge adventure’ which might be an understatement considering he’s just spent four months on a solo 16,500 km circumnavigation of Australia in a 6.5 metre fishing boat. In the Southern Ocean Mark was often battling eight metre seas – a six metre swell with two metres of chop on top.
Posted today at 6:04 am
Lowrance® announces new widescreen Elite-TI Displays
Lowrance® announced addition of a pair of widescreen displays to Elite Ti standalone series of fishfinder/chartplotters. Lowrance®, a world-leading brand in fishing electronics since 1957, announced today the addition of a pair of widescreen displays to the Elite Ti standalone series of fishfinder/chartplotters.
Posted today at 5:00 am
Great Barrier Reef managers and industry prepare for summer
Marine park managers, scientists and experts recently met for the annual pre-summer workshop Marine park managers, scientists and experts recently met for the annual pre-summer workshop to assess climate-related risks to the Great Barrier Reef over the coming months. Current predictions by the Bureau of Meteorology and National Oceanic and Atmospheric Administration are for a summer of average sea temperatures across the Great Barrier Reef.
Posted on 7 Dec
Introducing the Airbnb of the mooring and marina world
Have you ever struggled to find an available mooring, or do you have a mooring that is sitting vacant? Have you ever struggled to find an available mooring, or do you have a mooring that is sitting vacant? makefastmooring.com is aiming to solve this problem by connecting boat owners with those with vacant moorings or berths. With a growing number of moorings and marinas in New Zealand, Australia and around the world, makefastmooring.com allows people to find, rent and share moorings and berths.
Posted on 7 Dec
Introducing the Airbnb of the mooring and marina world
Have you ever struggled to find an available mooring, or do you have a mooring that is sitting vacant? Have you ever struggled to find an available mooring, or do you have a mooring that is sitting vacant? makefastmooring.com is aiming to solve this problem by connecting boat owners with those with vacant moorings or berths. With a growing number of moorings and marinas in New Zealand, Australia and around the world, makefastmooring.com allows people to find, rent and share moorings and berths.
Posted on 7 Dec
Tasmanian fishing
Offshore, tuna are still around and Bluefin seem to be about in even greater numbers than years past. Coffee coloured freshwater still seems to be the norm around the state’s coastline, making angling difficult for those who have salt in their veins. Offshore, tuna are still around and Bluefin seem to be about in even greater numbers than years past. A charter operator from the South of the state notched up his 1,000th tuna caught recently, so that’s not a bad record for the season.
Posted on 6 Dec
More bass stocking for Gippsland anglers
Freshwater fishing opportunities for recreational anglers in Gippsland are set to improve further Freshwater fishing opportunities for recreational anglers in Gippsland are set to improve further following the release of 122,000 Australian bass fingerlings last week.
Posted on 6 Dec
OceanLED adds a new underwater light to the sport series
OceanLED, the global leader in marine LED lighting, introduced new Sport S3124s as the latest addition to Sport series. OceanLED, the global leader in marine LED lighting, today introduced its new Sport S3124s as the latest addition to the Sport series. Engineered specifically for sport fishing and active cruising, the advanced underwater LED Sport S3124s light packs a powerful 3,000 fixture lumens punch in a stylish dual Ultra White and Midnight Blue light option.
Posted on 1 Dec
Seven dead, one missing, three rescued in Kaipara fishing accident
Searchers have recovered seven bodies from the Kaipara Harbour, after a fishing boat got into trouble today. Searchers have recovered seven bodies from the Kaipara Harbour, northwest of Auckland, after a fishing boat got into trouble on Saturday. As of Sunday two of the three people listed as missing on Saturday have been found dead, and their bodies recovered. Three were rescued and were in hospital, police said.
Posted on 26 Nov
Verado re-power 'astonishing'
Josh Ker wasn’t prepared for what happened when he recently re-powered Bertram 25 flybridge with a 350hp Mercury Verado Josh Ker, the man who heads up Bigfish Gear in Darwin, has been involved in offshore fishing for the past 25 years but he still wasn’t prepared for what happened when he recently re-powered his Bertram 25 flybridge with a 350hp Mercury Verado.
Posted on 24 Nov