The goal of this study was to identify a disintegrin inhibiting ADP-induced platelet aggregation present in the venom of the Tamaulipan rock rattlesnake.
morulus venom may vary intra-specifically in composition , it is very possible the existence of other disintegrins, besides morulustatin, in the venom of the Tamaulipan rock rattlesnake.
An ecological study of oxygen consumption in the mottled rock rattlesnake, Crotalus lepidus lepidus, and the black-tailed rattlesnake, Crotalus molossus molossus, from two populations.
Comparative ecology of the mottled rock rattlesnake, Crotalus lepidus, in Big Bend National Park.
I painted [T.sub.e] models to mimic the background coloration of rock rattlesnakes from each population (light gray at BOQ, rust red at GVH).
I deployed 32 [T.sub.e] models at BOQ and GVH in patches of habitat that were actively used by rock rattlesnakes, To avoid potentially confounding effects of slope and angle of exposure in comparisons between GVH and BOQ, I sampled sites at each locality with similar slope and direction of exposure (within 2 [degrees], measured with a Brunton surveyor's compass).
- I assessed the energy consequences of [T.sub.b] differences between sites by estimating daily metabolic costs (in joules per day) of resting snakes based on previously reported metabolic relationships for rock rattlesnakes from BOQ and GVH (Beaupre 1993b).
Because of the preponderance of diurnally active lizards observed in fecal material (Beaupre 1993a, 1995), rock rattlesnakes at BOQ and GVH appear to be primarily diurnal ambush foragers.
For rock rattlesnakes in Big Bend, the hotter BOQ environment forces BOQ snakes to have hotter [T.sub.b] at night than their GVH counterparts.