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The American bullfrog (Lithobates catesbeianus), often simply known as the bullfrog in Canada and the United States, is a large true frog native to eastern North America. It typically inhabits large permanent water bodies such as swamps , ponds , and lakes .
Tyrone B. Hayes (born July 29, 1967) is an American biologist and professor of integrative biology at the University of California, Berkeley. He is known for his research in frogs, concluding that the herbicide atrazine is an endocrine disruptor that demasculinizes male frogs, causing them to display female characteristics. Hayes is an advocate ...
[21] [22] The bullfrog often escapes captivity and can establish feral populations where it may introduce the disease to new areas. [8] It has also been shown that B. dendrobatidis can survive and grow in moist soil and on bird feathers, suggesting that B. dendrobatidis may also be spread in the environment by birds and transportation of soils ...
In Yunnan, China there is a population of albino clawed frogs in Lake Kunming, along with another invasive: the American bullfrog. Because this population is albino, it suggests that the clawed frogs originated from the pet trade or a laboratory. [55]
The annual global trade in the American bullfrog (Rana catesbeiana), mostly farmed in China, varies between 1200 and 2400 tonnes. [ 219 ] The mountain chicken frog , so-called as it tastes of chicken, is now endangered, in part due to human consumption, and was a major food choice of the Dominicans . [ 220 ]
Banded bullfrog (Kaloula pulchra), found in Southeast Asia; Chinese edible frog (Hoplobatrachus rugulosus) or East Asian Bullfrog, found in China and Southeast Asia; Hoplobatrachus crassus or Jerdon's bullfrog, found in India; Hoplobatrachus tigerinus or Indus Valley bullfrog, found in Pakistan and North India
Once released into the aquatic environment, zoospores travel less than 2 cm (0.8 in) within 24 hours before they encyst. [21] The limited range of B. dendrobatidis zoospores suggest some unknown mechanism exists by which they transmit from one host to the next, [21] which can involve the pet trade, and especially the American bullfrog. [22]
In March 2010, the US Fish and Wildlife Service announced 1,600,000 acres (6,500 km 2) of protected land for the species throughout California, which has implications regarding development and use of such land. [1] [20] [21] The largest population of the frog will be given protection on a 48-acre stretch of land (19 ha) in Placer County. [22] 2015