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Asian Swamp Eel (Monopterus albus)
Transcript of Asian Swamp Eel (Monopterus albus)
Can occur throughout the year
Eggs are laid in bubble nests in shallow waters
Bubble nests float at water’s surface
Are not attached to aquatic vegetation
Up to 1,000 eggs per female each time it reproduces
Takes place solely in freshwater
All young are females known as juveniles
Adults begin as mature females
Some develop into males
Can change back into females if female densities are low
This change can take up to a year
Can live in salt or fresh water
Feed primarily at night
Not affected by explosives and poisons
Alligators are the only predator
Imported by Chinese as exotic food source
Crosier, Danielle , and Daniel Mollloy. Monopterus albus - Asian Swamp Eel. N.p., n.d. Web. 13 Apr 2014. <http://el.erdc.usace.army.mil/ansrp/ANSIS/html/monopterus_albus_asian_swamp_eel.htm>.
Price, Marcus. Asian Swamp Eels. N.p., n.d. Web. 13 Apr 2014. <http://asianswampeels.weebly.com/facts.html>.
Reinert, T.R., Straight, C.A., & Freeman, B.J. (2006). Effectiveness of atimycin-a as a toxicant for control of invasive asian swamp eels. Fisheries Management, 26(4), 949-952. Retrieved from http://apps.webofknowledge.com.libez.lib.georgiasouthern.edu/full_record.do?product=UA&search_mode=Refine&qid=4&SID=2BfFR1t5niYH3IZmr7n&page=1&doc=8
Schofield, P., & Nico, L. (2007). Toxicity of 5% rotenone to nonindigenous asian swamp eels. North American Journal of Fisheries Management, 27(2), 453-459. Retrieved from http://apps.webofknowledge.com.libez.lib.georgiasouthern.edu/full_record.do?product=UA&search_mode=Refine&qid=4&SID=2BfFR1t5niYH3IZmr7n&page=1&doc=6
Crosier, D., & Molloy, D. (2007). Asian swamp eel. Retrieved from http://el.erdc.usace.army.mil/ansrp/ANSIS/html/monopterus_albus_asian_swamp_eel.htm
Methods of Control
Diet analysis studies
Toxicants for control
Large scale eradication project
Prohibit release into water bodies
Prohibit intentional stocking
Future studies should include:
Continue researching Asian swamp eels and their effects.
Continue to work towards better effective controls.
Continue to promote awareness.
Develop strategies to isolate Asian swamp eels or return them to native land
Asian swamp eels can cause additional risks to many aquatic species.
Environmental impacts in established populations, such as Georgia, Florida ,and Hawaii.
Environmental impacts include:
They have no known predators
They are displacing native aquatic species.
They are threats to fish, shrimp, crayfish, frogs, turtle eggs, worm and insects.
They accelerate the dying of shallow water bodies.
As a group we recommend:
Aquarium provides awareness when closing.
Asian swamp eels release regulations.
Food trade regulations
Fuller, P.L., L.G. Nico, M. Cannister, and M. Neilson.
(2013 Oct, 18). Monopterus albus. USGS Nonindigenous
Aquatic Species Database, Gainesville, FL. Retrieved
By: Lan Nguyen, Tanner Bridges, Kaylah Ibidapo, Jesse Cobb, & Maria Jean
Asian Swamp Eel
Biology of Asian Swamp Eel
Native to Southern Asia
Found in muddy ponds, canals, medium to large rivers, rice fields and swamps.
Tolerates brackish and saline conditions
Depths of less than 3 m are optimal
Very adaptable to different conditions
"National Invasive Species Information Center." invasive Species info. United States Department of Agriculture, 26 Nov 2013. Web. 13 Apr 2014. < http://www.invasivespeciesinfo.gov/aquatics/swampeel.shtml>.
Bricking, Erica. "Introduced Species Summary Project Asian Swamp Eel (Monopterus Albus)."columbia.edu. Columbia University, 27 Feb 2002. Web. 13 Apr 2014. <http://www.columbia.edu/itc/cerc/danoff-burg/invasion_bio/inv_spp_summ/Monopterus_albus.html>
Can grow up to one meter long and 1 pound
Small bristle like teeth
Brownish Green like color, lightens towards its underbelly
Long Snake like body
Preys on small fish and frogs
Native to Asia (Northern India to Burma to China)
Multiple Introductions over the years (Genetic Analysis)
Introduced in Atlanta (Gwinnet County) from Japan and Korea (1994)
Florida from Southern China (Late 1990’s)
New Jersey in 2008
Oahu, Hawaii- Before 1900
Mode of Introduction
Usually native to moving freshwater regions
Introduction into Florida result of :
Aquarium release, fish farm escape, or release of specimens from the life food-fish market.
They are a popular ethnic delicacy
Introduced through food trade
Introduced to Georgia through aquarium release
Introduced to Hawaii by Asian immigrants as food
: The Asian swamp eel is commonly used as a food fish
Asian and specifically Chinese immigrants are the main consumers of swamp eels as food fish
Everglades National Park
Disrupts natural interactions between native species and environment
: Possible vector for macro-parasites
Coastal Estuarine areas are pathways for dispersal
Swamp eel populations: moderate salinity levels
Can disperse over wet or dry land
Therefore success is greater
Disperse in freshwater in shallow or deep waters
Hamilton H 2006. Frequently Asked Questions about the Asian Swamp Eel. Florida Integrated Science Center: USGS. 17 March 2006. Retrieved from http://cars.er.usgs.gov/Nonindigenous_Species/Swamp_eel_FAQs/swamp_eel_faqs.html Last accessed: 14 April 2014.
Merrick, J. R. and Schmida, G. E. 1984. Australian Freshwater Fishes: Biology and Management. Griffin Press, Netley, South Australia.
Wikipedia. (2014, March 09). Asian swamp eel. Retrieved from http://en.wikipedia.org/wiki/Asian_swamp_eel