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Positive Darwinian selection results in resistance to cardioactive toxins in true toads (Anura: Bufonidae)

Moore, David; Halliday, Damien C.T.; Keogh, J Scott; Rowell, David M; Robinson, A.J.

Description

Members of the Family Bufonidae, true toads, are famous for their endogenously synthesized cardioactive steroids that serve as defensive toxins. Evolution of resistance to these toxins is not understood. We sequenced a key region of the toxin's binding site in the Na+/K+ ATPase for relevant taxa representing Hyloidea (including bufonids), Ranoidea and Archaeobatrachia and tested for positive selection in a phylogenetic context. Bufonidae were distinct from other Hyloidea at 4-6 of 12 sites and,...[Show more]

CollectionsANU Research Publications
Date published: 2009
Type: Journal article
URI: http://hdl.handle.net/1885/59104
Source: Biology Letters
DOI: 10.1098/rsbl.2009.0281

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