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Homobatrachotoxin in the genus Pitohui: chemical defense in birds? | | J P Dumbacher
; B M Beehler
; T F Spande
; H M Garraffo
; J W Daly
; | | Date: |
30 Oct 1992 | | Journal: | Science, 258 (5083), 799-801 | | Abstract: | Three passerine species in the genus Pitohui, endemic to the New Guinea subregion, contain the steroidal alkaloid homobatrachotoxin, apparently as a chemical defense. Toxin concentrations varied among species but were always highest in the skin and feathers. Homobatrachotoxin is a member of a class of compounds collectively called batrachotoxins that were previously considered to be restricted to neotropical poison-dart frogs of the genus Phyllobates. The occurrence of homobatrachotoxin in pitohuis suggests that birds and frogs independently evolved this class of alkaloids. | | Source: | PubMed, pmid1439786 | | Services: | Forum | Review | Favorites | |
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