Rana Catesbeiana in Guangdong Province
RanaCatesbeiana in Guangdong Province
RanaCatesbeiana in Guangdong Province
RanaCatesbeiana species is originally from North America but wasintroduced to over four continents and over forty countries aroundthe world. It is commonly known as the American bullfrog with othernames such as grenouilletaureau, Stierkikker, rana toro and others. It was introduced mainlyas an alternative food for people in the bullfrog farms and issometimes reared as pets (Kawanabe,Nishino & Maehata, 2012).They are reared in controlled environments, but other populationsresult from the species that escape from the farms. The increase inRanaCatesbeiana hashad severe consequences on the ecosystem leading to concerted effortsto control them. This paper will discuss some of these effects whichinclude destructionof the food chain, financial loss and broken habitat balance.
Thereis evidence that bullfrogs get infected by the B. dendrobatidisfungus but they are resistant to the disease chytridiomycosis, whichis lethal to many other amphibians and also Sparganosisa parasitic infection that is transmitted from eating thecontaminated frog meat(Honget al. 2016).The parasitic infection was highly prevalent in cats and dogs inChina. It has resulted to the decrease in the amphibian population indifferent parts of the world especially of the vulnerable species andeven extinction of others, andis attributed to extinction of over a hundred amphibian species onearth (Moyle,2012). Thishas led to the broken natural habitat balance with reduced amphibianpopulation and reduced aquatic life. The bull frog is considered aninvasive species and may outcompete the native amphibian speciesthereby resulting in imbalance of the natural habitats.
Bullfrogs feed on aquatic species like fish,tadpoles and snailsand also feed on rodents, reptiles, birds and bats as well as insects(Mikula, 2015).This leads to destruction of the food chain as some ofthese like insects are main food for the ranid frogs. Bull frogshave strong jaws and thus can capture large strong prey, includingability to capture prey that is submerged. Due to their size andstrength, they destroy the native frog populations as they eat them,including other bull frogs. Theyare very strong and is said to eat everything they can get hold of.
Dueto the negative effects of the bullfrog, a lot of money has beenspent to control them. First is to control the parasitic and fungalinfections that affect other species and control their decline (Honget al. 2016). Secondly, a lot of money has been committed in researchto find ways of controlling the effects of the bullfrog. Same caseapplies to education and awareness creation to the people on theeffect of the species (Centerfor coastal Health 2017).A lot of resources have also been committed to control the spread ofthe species and eradicate the negative effects.
Inconclusion, relevantstrategies should be adopted to address the health consequences ofchytridiomycosisdisease throughoutChina and other parts of the world. It is important to educate peopleof the dangers of releasing the bullfrog pets in to the wild.Eradicating these invasive species is mainly by killing those usingphysical means like trapping them with nets, using spears, bows andarrows and other physical methods. Left uncontrolled, there are boundto occur further extinction of the amphibian species and decline inother vulnerable populations. This paper has discussed the effects ofthe invasive species RanaCatesbeiana that includedestructionof the food chain, financial loss and broken habitat balance.
Hong,Q.et al. (2016).Prevalence of Spirometra Mansoni in Dogs, Cats, and Frogs and itsMedical Relevance in Guangzhou, China. International Journal ofInfectious Diseases. Retrieved April 11, 2017 from:http://www.ijidonline.com/article/S1201-9712 (16)31197-3/pdfKawanabe,H., Nishino, M., & Maehata, M. (2012). LakeBiwa: Interactions between nature and people.Dordrecht: Springer.Mikula,P. (2015). Fish and Amphibians as Bat Predators. EuropeanJournal of Ecology. 1 (1),pp. 71–80.Moyle,P. (2012). Bullfrog. Eatthe Invaders.Retrieved April11, 2017 from: http://eattheinvaders.org/bullfrog/Centerfor coastal Health (2017).Potential Impacts of American Bullfrogs(Rana catesbeiana) on Drinking Water Quality. Retrieved April11, 2017 from:https://www.centreforcoastalhealth.ca/projects/potential-impacts-of-american-bullfrogs-rana-catesbeiana-on-drinking-water-quality/
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