{"id":2736,"date":"2010-02-23T12:43:54","date_gmt":"2010-02-23T16:43:54","guid":{"rendered":"https:\/\/esa.org\/esablog\/?p=2736"},"modified":"2010-02-23T12:43:54","modified_gmt":"2010-02-23T16:43:54","slug":"australian-scientists-fight-cane-toad-invasion-with-cat-food-and-laced-sausages","status":"publish","type":"post","link":"https:\/\/esa.org\/esablog\/2010\/02\/23\/australian-scientists-fight-cane-toad-invasion-with-cat-food-and-laced-sausages\/","title":{"rendered":"Australian scientists fight cane toad invasion with cat food and laced sausages"},"content":{"rendered":"

Scientists from the University of Sydney are getting creative with their efforts to combat destructive cane toad populations in Australia and to protect native species from the pests.<\/span><\/p>\n

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Cane toads were introduced to Australia in 1935.<\/span><\/dd>\n<\/dl>\n

Cane toads, which were introduced to Australia in 1935 from Hawaii in an attempt to eradicate cane beetles, have caused a decline in other native species populations, such as snakes, lizards and <\/span>quolls<\/span><\/a>. Scientists have been trying to control the spread of cane toads for years; recent experiments have shown progress.<\/span><\/p>\n

For example, Georgia Ward-Fear and colleagues used open cans of cat food to lure native <\/span>meat ants<\/span><\/a> to the shores of ponds inhabited by baby cane toads. Once there, the meat ants turned to the baby toads for a food source. Since the toads\u2019 natural defense mechanism is to freeze and secrete a poison from glands in their backs, the effort is no match for the impervious meat ant. Rick Shine, who heads the <\/span>lab<\/span><\/a> where both studies were conducted, describes the interaction in a Reuters <\/span>article<\/span><\/a>:<\/span><\/p>\n

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All we\u2019re doing is encouraging the ants to flourish somewhere where they already flourish, letting them know there\u2019s particularly good food around so we get more of them down there on a very short-term basis. Baby toads are incredibly stupid and their reaction to being attacked is to freeze. I think they\u2019re trying to advertise the fact they\u2019re poisonous and let the predator get a taste of that, but it doesn\u2019t work for the ant because it isn\u2019t affected.<\/span><\/p>\n<\/blockquote>\n

The results, published in February edition of the Journal of Applied Ecology<\/a><\/em>, are impressive: the meat ants attacked 98% of the toads within the first few minutes. In addition, over 50% of the attacks were immediately fatal and 88% of escapee toads died within 24 hours.<\/span>\n<\/p>\n

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Native animals, like this Tiger quoll, are threatened by the rise in cane toad populations.<\/span><\/dd>\n<\/dl>\n

In other research, Stephanie O\u2019Donnell and colleagues are training quolls, one of the predators affected \u00a0by the toads, to avoid eating the poisonous amphibians. Quolls, most of which are listed as threatened, are carnivorous marsupials related to the Tasmanian devil. They rely mostly on insects, birds, rodents and amphibians as a food source. However, since the cane toad is non-native, quolls are not predisposed to avoid them. Shine explains in a <\/span>press release<\/span><\/a>:<\/span><\/p>\n

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Quolls have largely disappeared from the areas where cane toads occur. We know from Stephanie\u2019s work that if you don\u2019t train quolls to leave toads alone they\u2019re very likely to eat the first toad they encounter and die as a result.<\/span><\/p>\n<\/blockquote>\n

The researchers are attempting to train the quolls to associate the taste of cane toads with becoming sick. They are introducing the quolls to sausages made from cane toad frog legs and which are laced with a nauseating chemical. Research suggests that a quarter of quolls will avoid eating a cane toad if they have sampled one of these laced sausages. Says Shine in another <\/span>release<\/span><\/a>:<\/span><\/p>\n

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No single control will be a silver bullet to eradicate the cane toad from the Australian landscape. If we understand the biology of cane toads and their interactions with Australian fauna we\u2019ll be in a much better position to control them.<\/span><\/p>\n<\/blockquote>\n

Cane Toad: http:\/\/www.flickr.com\/photos\/ozwildlife\/<\/a> \/ CC BY-NC-ND 2.0<\/a><\/p>\n

Quoll: http:\/\/www.flickr.com\/photos\/pierre_pouliquin\/<\/a> \/ CC BY-NC 2.0<\/a><\/p>\n

Ward-Fear, G., Brown, G., & Shine, R. (2010). Using a native predator (the meat ant,Iridomyrmex reburrus) to reduce the abundance of an invasive species (the cane toad,Bufo marinus) in tropical Australia Journal of Applied Ecology<\/span> DOI: 10.1111\/j.1365-2664.2010.01773.x<\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

Scientists from the University of Sydney are getting creative with their efforts to combat destructive cane toad populations in Australia and to protect native species from the pests. Cane toads were introduced to Australia in 1935. Cane toads, which were introduced to Australia in 1935 from Hawaii in an attempt to eradicate cane beetles, have caused a decline in other…<\/p>\n","protected":false},"author":50,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8,2],"tags":[314,527,109,528,529],"class_list":["post-2736","post","type-post","status-publish","format-standard","hentry","category-conservation","category-research","tag-australia","tag-cane-toad","tag-invasive-species","tag-meat-ants","tag-quoll"],"_links":{"self":[{"href":"https:\/\/esa.org\/esablog\/wp-json\/wp\/v2\/posts\/2736","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/esa.org\/esablog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/esa.org\/esablog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/esa.org\/esablog\/wp-json\/wp\/v2\/users\/50"}],"replies":[{"embeddable":true,"href":"https:\/\/esa.org\/esablog\/wp-json\/wp\/v2\/comments?post=2736"}],"version-history":[{"count":0,"href":"https:\/\/esa.org\/esablog\/wp-json\/wp\/v2\/posts\/2736\/revisions"}],"wp:attachment":[{"href":"https:\/\/esa.org\/esablog\/wp-json\/wp\/v2\/media?parent=2736"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/esa.org\/esablog\/wp-json\/wp\/v2\/categories?post=2736"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/esa.org\/esablog\/wp-json\/wp\/v2\/tags?post=2736"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}