Featured Research

from universities, journals, and other organizations

First View Of Giant Crabs - At Home On The Slope

Date:
December 1, 2003
Source:
CSIRO Australia
Summary:
Australian scientists have had their first view of the habitats and ecosystem that support Australia's largest commercial crab - the "giant crab".

Australian scientists have had their first view of the habitats and ecosystem that support Australia's largest commercial crab - the "giant crab".

A series of five surveys are planned in waters of 150-350 metres depth to assess the seabed habitats of the giant crab (Pseudocarcinus gigas) at the edge of the continental shelf around Tasmania.

The pilot survey was completed on the State's east coast earlier this month in a collaborative project between CSIRO Marine Research and the Tasmanian Aquaculture and Fisheries Institute (TAFI), University of Tasmania.

"We used a specially designed camera platform towed behind a research vessel to provide a tremendously exciting first look at the type of habitat that supports the giant crab fishery," says project scientist, Dr. Alan Williams, from CSIRO Marine Research in Hobart.

"We were as pleasantly surprised by the extremely good detail provided by the new cameras system as we were by the range of habitats we were able to film," he said.

Seafloor features observed ranged from large plains of muddy sands supporting communities of small invertebrate animals, to ridges, and rock outcrops exceeding 20 metres in height.

The project includes a study of the distribution of the giant crab in relation to habitat features, evaluating ecosystem links with the seabed habitats and assessing the abundance, sex, condition and size of the giant crabs.

"The crab trap fishery is a unique Australian fishery, and based in an environment and depth that, until now, we have not had the technology to study in this way," says project leader Dr Caleb Gardner, from the Tasmanian Aquaculture and Fisheries Institute (TAFI).

"Sustainability of all Australian fisheries is reliant on healthy habitats and ecosystems and this project seeks to identify the characteristics of the system and what, if any, impacts are occurring as a result of fishing activity," Dr. Gardner said.

The long-lived, slow-growing giant crab is highly sought-after especially in the Asian market. Although mostly sold at around 4kg and with a shell of 20 cm or less, the crab reaches a massive 13.5 kg.

The Tasmanian pot fishery expanded rapidly in the 1990's and is now targeted across southern Australia in Victoria, Tasmania, South Australia and Western Australia.

Funded by the Tasmanian fishing industry and the Department of Primary Industry, Water and Environment, the project is a joint study involving the Tasmanian Aquaculture and Fisheries Institute, CSIRO Marine Research, and the crab trapping and finfish trawling sectors.


Story Source:

The above story is based on materials provided by CSIRO Australia. Note: Materials may be edited for content and length.


Cite This Page:

CSIRO Australia. "First View Of Giant Crabs - At Home On The Slope." ScienceDaily. ScienceDaily, 1 December 2003. <www.sciencedaily.com/releases/2003/11/031128082954.htm>.
CSIRO Australia. (2003, December 1). First View Of Giant Crabs - At Home On The Slope. ScienceDaily. Retrieved September 22, 2014 from www.sciencedaily.com/releases/2003/11/031128082954.htm
CSIRO Australia. "First View Of Giant Crabs - At Home On The Slope." ScienceDaily. www.sciencedaily.com/releases/2003/11/031128082954.htm (accessed September 22, 2014).

Share This



More Plants & Animals News

Monday, September 22, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: San Diego Zoo Welcomes Cheetah Cubs

Raw: San Diego Zoo Welcomes Cheetah Cubs

AP (Sep. 20, 2014) The San Diego Zoo has welcomed two Cheetah cubs to its Safari Park. The nearly three-week-old female cubs are being hand fed and are receiving around the clock care. (Sept. 20) Video provided by AP
Powered by NewsLook.com
Chocolate Museum Opens in Brussels

Chocolate Museum Opens in Brussels

AFP (Sep. 19, 2014) Considered a "national heritage" in Belgium, chocolate now has a new museum in Brussels. In a former chocolate factory, visitors to the permanent exhibition spaces, workshops and tastings can discover derivatives of the cocoa bean. Duration: 01:00 Video provided by AFP
Powered by NewsLook.com
Could Grief Affect The Immune Systems Of Senior Citizens?

Could Grief Affect The Immune Systems Of Senior Citizens?

Newsy (Sep. 19, 2014) The study found elderly people are much more likely to become susceptible to infection than younger adults going though a similar situation. Video provided by Newsy
Powered by NewsLook.com
Jury Delivers Verdict in Salmonella Trial

Jury Delivers Verdict in Salmonella Trial

AP (Sep. 19, 2014) A federal jury has convicted three people in connection with an outbreak of salmonella poisoning five years ago that sickened hundreds of people and was linked to a number of deaths. (Sept. 19) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins