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:12/15/2016)... "Increase in mobile transactions is driving the ... market is expected to grow from USD 4.03 billion ... a CAGR of 29.3% between 2016 and 2022. The ... demand for smart devices, government initiatives, and increasing penetration ... is expected to grow at a high rate during ...
(Date:12/8/2016)... Dec. 8, 2016  Singulex, Inc., the leader in ... entered into a license and supply agreement with Thermo ... agreement provides Singulex access to Thermo Scientific BRAHMS PCT ... is used to diagnose systemic bacterial infection and ... to aid in assessing the risk of critically ...
(Date:12/7/2016)... , Dec. 7, 2016   Avanade ... successful Formula One teams in history, exploit biometric data ... stop performance and maintain the competitive edge against their ... 2016. Avanade has worked with Williams ... range of biometric data (heart rate, breathing rate, temperature ...
Breaking Biology News(10 mins):
(Date:1/23/2017)... , ... January 23, 2017 , ... ... at the Caribbean Neurosciences Symposium (CANS) annual meeting in Montego Bay, Jamaica from ... and host a hands-on workshop for surgeons to experience the simplicity of the ...
(Date:1/21/2017)... ... January 20, 2017 , ... Nipro Corporation (Osaka, Japan) and ... under which Nipro will receive exclusive marketing and sales rights for all non-OEM Transonic ... for hemodialysis patients in Japan, the new Nipro - Transonic JV is a natural ...
(Date:1/21/2017)... 20, 2017 Bioptix, Inc. (Nasdaq: ... that on January 14, 2017 the Board of Directors ... Company will terminate certain employees associated with the September ... Company commenced terminations on January 16, 2017 and terminations ... Company may pay severance benefits in certain circumstances of ...
(Date:1/20/2017)... PA (PRWEB) , ... January 20, 2017 , ... The ... transforming healthcare treatment options for patients. Vironika, a spin out from The Wistar Institute, ... both taking lab space at 3624 Market Street. , Vironika is developing a ...
Breaking Biology Technology: