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Asian Swamp Eel (Monopterus albus)

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by

Kaylah Ibidapo

on 14 April 2014

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Transcript of Asian Swamp Eel (Monopterus albus)

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

Reproduction

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

Life Cycle

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

Interesting Facts

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>.


References

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


Electro-fishing
Vegetation removal
Electrical barriers
Trapping
Piscicides
-Rotenone



Methods of Control

Diet analysis studies
Toxicants for control
ex: atimycin-A
Large scale eradication project




Current Studies

Prohibit release into water bodies
Prohibit intentional stocking



Prevention

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




Future Studies

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.







Public Awareness

As a group we recommend:
Aquarium provides awareness when closing.
Asian swamp eels release regulations.
Food trade regulations
Eliminate them.



Group Recommendation

Fuller, P.L., L.G. Nico, M. Cannister, and M. Neilson.
(2013 Oct, 18). Monopterus albus. USGS Nonindigenous
Aquatic Species Database, Gainesville, FL.  Retrieved
from http://nas.er.usgs.gov/queries/factsheet.aspx?SpeciesID=974


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

Natural Environment

"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>
Monopterus Albus
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


Geographic Range
Geographic Range
Native to Asia (Northern India to Burma to China)
Northeastern Australia
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

Impact
Economic Impacts
: 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
Environmental Impact:
Everglades National Park
Disrupts natural interactions between native species and environment
Ecological Impact
: Possible vector for macro-parasites
Dispersal Success
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
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