Featured Research

from universities, journals, and other organizations

Asia's Bear-sized Catfish Are Disappearing

Date:
February 26, 2004
Source:
University Of California - Davis
Summary:
One of the world's largest freshwater fish, an Asian catfish as big as a bear, may disappear in the near future, warns a UC Davis conservation biologist from his research base in Cambodia.

Three fishermen display a giant catfish they caught in the Mekong River in Thailand. (Zeb Hogan/photo)

One of the world's largest freshwater fish, an Asian catfish as big as a bear, may disappear in the near future, warns a UC Davis conservation biologist from his research base in Cambodia.

The giant catfish (Pangasianodon gigas), which grows to 10 feet long and 650 pounds, is a migratory species in the rivers of Thailand, Cambodia and Laos. It has been a mainstay for local fishers for centuries.

Now very few fish are being caught. At one typical traditional fishing spot on the Mekong River at Chiang Khong, Thailand, 30 fish were caught in 1995, seven in 1997, two in 1998 and none in 2000 and 2001.

Zeb Hogan is a conservation biologist and a UC Davis doctoral student studying the fish on the Mekong and Tonle Sap rivers. "I'd go down to where the fishermen had their nets out and ask, 'Caught any fish?' And they never did," Hogan said.

"Here is a fish that has been caught for hundreds of years. Now it looks like it's on the way out."

Hogan's doctoral adviser is UC Davis fisheries biologist Peter Moyle. Like some of the California native fish that Moyle studies, the giant catfish migrate hundreds of miles each year between downstream feeding areas and upstream spawning areas.

"The giant catfish and other fish in this diverse ecosystem are extremely important to the health and economic well-being of local peoples but are threatened by the construction of hydropower dams and other problems," Moyle said. "We hope that Zeb's work will help call attention to a potential impending ecological and social disaster."

Hogan's research is funded by the Cambodian Department of Fisheries, the conservation group Save Cambodia's Wildlife and the National Geographic Society's Conservation Trust.


Story Source:

The above story is based on materials provided by University Of California - Davis. Note: Materials may be edited for content and length.


Cite This Page:

University Of California - Davis. "Asia's Bear-sized Catfish Are Disappearing." ScienceDaily. ScienceDaily, 26 February 2004. <www.sciencedaily.com/releases/2004/02/040226072400.htm>.
University Of California - Davis. (2004, February 26). Asia's Bear-sized Catfish Are Disappearing. ScienceDaily. Retrieved April 21, 2014 from www.sciencedaily.com/releases/2004/02/040226072400.htm
University Of California - Davis. "Asia's Bear-sized Catfish Are Disappearing." ScienceDaily. www.sciencedaily.com/releases/2004/02/040226072400.htm (accessed April 21, 2014).

Share This



More Plants & Animals News

Monday, April 21, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Mich. Boy Unearths 10,000-Year-Old Mastodon Tooth

Mich. Boy Unearths 10,000-Year-Old Mastodon Tooth

Newsy (Apr. 20, 2014) — A 9-year-old Michigan boy was exploring a creek when he came across a 10,000-year-old tooth from a prehistoric mastodon. Video provided by Newsy
Powered by NewsLook.com
Vermont Goat Meat Gives Refugees Taste of Home

Vermont Goat Meat Gives Refugees Taste of Home

AP (Apr. 18, 2014) — Dairy farmers and ethnic groups in Vermont are both benefiting from a unique collaborative effort that's feeding a growing need for fresh and affordable goat meat. (April 18) Video provided by AP
Powered by NewsLook.com
Man Claims He Found Loch Ness Monster With... Apple Maps?

Man Claims He Found Loch Ness Monster With... Apple Maps?

Newsy (Apr. 18, 2014) — Andy Dixon showed the Daily Mail a screenshot of what he believes to be the mythical beast swimming just below the lake's surface. Video provided by Newsy
Powered by NewsLook.com
First Ever 'Female Penis' Discovered In Animal Kingdom

First Ever 'Female Penis' Discovered In Animal Kingdom

Newsy (Apr. 18, 2014) — Not only are these newly discovered bugs' sex organs reversed, but they also mate for up to 70 hours. Video provided by Newsy
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