Navigation Links
What do American bullfrogs eat when they're away from home? Practically everything!
Date:3/14/2013

American bullfrogs are native to eastern North America but have been transported by people to many other parts of the globe, and other parts of North America, where they have readily established populations and become an invasive alien menace to native ecosystems. In the largest study of its kind to date, the stomach contents of over 5,000 invasive alien American bullfrogs from 60 lakes and ponds on southern Vancouver Island were examined to identify the native and exotic animals that they had preyed upon. The study was published in the open access journal NeoBiota.

Over 15 classes of animals were reported from a total of 18,814 identifiable prey remains, including terrestrial and aquatic insects, spiders, crayfish, fish, frogs, salamanders, newts, snakes, lizards, turtles, birds, and small mammals. The study examined the stomach contents of adults and juveniles of all size-classes, but excluded tadpoles. These results show that bullfrogs will attack and consume virtually any organism that is within reach and can be swallowed, including their own species.

Previous studies on bullfrog diet have examined relatively small numbers of stomachs from a comparatively small number of lakes and ponds. Our results reinforce the general consensus that there is good reason for concern about the ecological harm that uncontrolled populations of American bullfrogs might have, or are having, on populations of native species.

For decades, bullfrogs have been transported and released around the world by prospective frog-farmers, pet owners, game managers, recreational fishermen, biological supply houses; and even by entrants in frog jumping contests. They adapt readily to a variety of habitats from the tropics to temperate zones and once established, their numbers grow fast with each adult female producing about 20,000 or more eggs per year. For these reasons, American bullfrogs are internationally recognized as one of the 100 worst invasive alien species in the world.


'/>"/>

Contact: Stan A. Orchard
bullfrogcontrol@shaw.ca
250-858-3764
Pensoft Publishers
Source:Eurekalert  

Related biology news :

1. 87 scientists elected to the American Academy of Microbiology
2. FASEB MARC Travel Awards announced for the 2013 American College of Sports Medicine Northwest Chapter Meeting
3. American Academy of Microbiology releases resistance report
4. African-American, Caucasian women should take identical vitamin D doses
5. Cancer risk for African-American women with benign breast disease factors Wayne State finds
6. New American Chemical Society video highlights 5 of chocolates sweet benefits
7. Poll: Americans back climate change regulation, not taxes
8. Spring may come earlier to North American forests
9. New American Chemical Society podcast: Boosting the sensitivity of airport security screening
10. Abuse during childhood linked to uterine fibroids in African-American women
11. UC Riverside mathematicians recognized by American Mathematical Society
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
What do American bullfrogs eat when they're away from home? Practically everything!
(Date:1/22/2016)... http://www.researchandmarkets.com/research/p74whf/global_biometrics ) ... "Global Biometrics Market in Retail Sector 2016-2020" ... --> http://www.researchandmarkets.com/research/p74whf/global_biometrics ) has announced the ... in Retail Sector 2016-2020" report to ... and Markets ( http://www.researchandmarkets.com/research/p74whf/global_biometrics ) has announced ...
(Date:1/20/2016)... 2016  Synaptics Incorporated (NASDAQ: SYNA ), ... announced sampling of S1423, its newest ClearPad ® ... screen applications including smartwatches, fitness trackers, and touch ... rectangular shapes, as well as thick and curved ... on screen, while wearing gloves, and supports swipes ...
(Date:1/13/2016)... January 13, 2016 ... addition of the  "India Biometrics Authentication ... Forecast (2015-2020)"  report to their ... has announced the addition of the  ... - Estimation & Forecast (2015-2020)" ...
Breaking Biology News(10 mins):
(Date:2/8/2016)... (PRWEB) , ... February 08, 2016 , ... ... a wide range of loose, bulk foods at various stages of the production ... also used to inspect large bulk products post packaging such as sacks of ...
(Date:2/8/2016)... , February 8, 2016 ... ("Atlas Genetics" or the "Company"), the ultra-rapid Point-Of-Care (POC) molecular ... CE Mark its Chlamydia trachomatis (CT) test to be launched ... the IVD Directive (98/79/EC), the CT test is now cleared ... --> The launch of the io® CT ...
(Date:2/5/2016)... , Feb. 5, 2016 On Thursday, ... trusted information source for community, health and disaster services, ... will integrate to enhance care coordination and service ... the services they need and to better connect service ... care.   San Diego has ...
(Date:2/4/2016)... Calif. , Feb. 4, 2016  Sangamo BioSciences, ... genome editing, announced today that Edward Lanphier , ... update on the progress of Sangamo,s ZFP Therapeutic ® ... business strategy at 2:40 pm ET on Thursday, February ... Annual Global Healthcare Conference. The conference is being held ...
Breaking Biology Technology: