Abstract
V. Williams and J. White. Variation in venom composition and reactivity in two specimens of yellow-faced whip snake ( Demansia psammophis) from the same geographical area. Toxicon 28, 1351–1354, 1990.—Gel filtration chromatography and SDS-PAGE of venom from two specimens of Demansia psammophis showed little similarity. Amidolytic activity of the venoms, however, was in the same order of reactivity against various chromogenic substrates. The venom from both snakes produced precipitin lines with brown snake antivenom but the venom detection kit (Commonwealth Serum Laboratories) identified one venom as brown snake ( Pseudonaja sp.) and the other as tiger snake ( Notechis sp.). These results raise questions about the phylogeny of this species.
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