根据下文Experts estimate that there are currently over 200 million samples spread across Northern Australia, and the numbers are only growing.(专家估计,目前澳大利亚北部有2亿多只海蟾蜍,而且这个数字还在不断增长)可知,C项 "由于天敌很少,它们的数量开始迅速增长" 符合此处语境。故C选项正确。2.考查上下文...
【解析】CGBDF1.C.文章衔接题.根据前文T he cane toad(海蟾蜍)was imported to Australia in 1935to protect sugarcane crops.可知1935年,为了保护甘蔗作物,甘蔗蟾蜍被进口到澳大利亚.C项:With very few natural enemies, their population began to grow rapidly.由于天敌很少它们的数量开始迅速增长.符合文意,故...
Cane toads in Australia now number into the millions, and their still-expanding range covers thousands of square miles in northeastern Australia. In addition to Australia, cane toads have spread in Florida, Hawaii, Guam, the Philippines, the Caribbean islands, the western Pacific islands, Papua ...
Their effects on Australia's ecology include the depletion of native species that die eating cane toads; the poisoning of pets and humans; depletion of native fauna preyed on by cane toads; and reduced prey populations for native insectivores, such as skinks. Cane toad venom is a mix of ...
Today, they inhabit most of the Australian tropics and sub‐tropics and have reached Western Australia. Models predict that global warming will enable the toads to extend their range further south. They cause severe environmental impacts, as all life stages of B. marinus contain bufadienolides, ...
(a) An adult female male cane toad showing parotoid gland, and (b) an adult male cane toad exuding toxin from parotoid glands following capture. Photographs by Cameron Hudson. Full size image In the case of the cane toad, the invaded range in Australia contains many predators that are ...
Cane toads tolerate a broad range of environmental and climatic conditions and appear to be able to adjust and survive in almost any environment system, including sea water for short penods of time. This to a large extent explains their success in their spreading in Australia. Cane toads are ...
Many populations in the southern part of the cane toad’s range lacked arthritic individuals, and some long-established populations (i.e., Hughenden and Townsville) had a high prevalence of spinal arthritis (Fig. 1). Statistically, year of establishment had a negative effect on the presence ...
The voracious cane toad (Bufo marinus), whose native range spans from northern South America to southern Texas, is a poisonous species with few natural predators. It was introduced into Australia in the 1930s from Hawaii to reduce the effects of beetles on sugarcane plantations. Cane toads are...
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