Intergradation of two different venom populations of the Mojave rattlesnake (Crotalus scutulatus scutulatus) in Arizona

  • Glenn J
  • Straight R
  • 28

    Readers

    Mendeley users who have this article in their library.
  • 49

    Citations

    Citations of this article.

Abstract

J. L. Glenn and R. C. Straight. Intergradation of two different venom populations of the Mojave rattlesnake (Crotalus scutulatus scutulatus) in Arizona. Toxicon 27, 411-418, 1989.-Two distinct venom populations of Crotalus scutulatus scutulatus exist in Arizona. The venom of one population (venom A) contains the toxin 'Mojave toxin' and is lacking in hemorrhagic and specific proteolytic activities. The other population (venom B) does not contain Mojave toxin but does produce hemorrhagic and proteolytic activities. The venoms of 15 Crotalus scutulatus scutulatus from regions between the venom A and venom B populations in Arizona were examined for the presence of Mojave toxin by immunochemical assay, lethality by mouse i.p. ld50, proteolytic activity and hemorrhagic activity in mice. Venom protein constituents were analyzed using reverse-phase HPLC. Seven venoms contained both the Mojave toxin of venom A and the proteolytic and hemorrhagic activities of venom B. The i.p. ld50values of the A+B venoms were 0.4-2.6 mg/kg, compared to 0.2-0.5 mg/kg for venom A individuals and 2.1-5.3 mg/kg for the venom B individuals. HPLC illustrated that the A+B venoms exhibited a combined protein profile of venom A and venom B. These data indicate that an intergrade zone exists between the two venom types which arcs around the western and southern regions of the venom B population. Within these regions, three major venom types can occur in Crotalus s. scutulatus. © 1989.

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document

Get full text

Authors

  • James L. Glenn

  • Richard C. Straight

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free