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:11/15/2016)... , Nov. 15, 2016  Synthetic Biologics, ... developing therapeutics focused on the gut microbiome, today ... of 25,000,000 shares of its common stock and ... stock at a price to the public of ... to Synthetic Biologics from the offering, excluding the ...
(Date:6/27/2016)... 27, 2016 Research and Markets has announced ... report to their offering. ... to grow at a CAGR of 12.28% during the ... on an in-depth market analysis with inputs from industry experts. The ... coming years. The report also includes a discussion of the key ...
(Date:6/21/2016)... British Columbia , June 21, 2016 /PRNewswire/ ... appointed to the new role of principal product ... been named the director of customer development. Both ... NuData,s chief technical officer. The moves reflect NuData,s ... teams in response to high customer demand and ...
Breaking Biology News(10 mins):
(Date:12/5/2016)... , Dec 5, 2016 Research and ... "Biomarkers - Technologies, Markets and Companies" to their offering. ... , , ... their discovery using various -omics technologies such as proteomics and metabolomics. ... new tests are also based on biomarker. Currently the ...
(Date:12/5/2016)... 2016 /PRNewswire/ - Resverlogix Corp. ("Resverlogix" or the ... and Safety Monitoring Board (DSMB) for the Company,s ... (CVD) patients has completed a second planned safety ... as planned without any modifications. The DSMB reviewed ... or efficacy concerns were identified. The DSMB will ...
(Date:12/4/2016)... ... December 02, 2016 , ... A proposed five-year extension ... federally funded research and development is welcome news for the photonics community, say ... , As part of the National Defense Authorization Act (NDAA) compromise agreement finalized ...
(Date:12/2/2016)... 2016 More than $4.3 million was raised last ... DHMD ). The gala was held at the American Museum ... and honored Alan Alda and ... and medicine and the public understanding of science. Since the ... event has raised $40 million for the Laboratory,s research and ...
Breaking Biology Technology: