Biology Reference
In-Depth Information
(A)
(B)
(C)
(D)
Plate 4.92
(A-F) Examples of local effects of crotaline viperid envenomations.
Moderate-
to-severe envenomation by most crotaline viperids produces local effects that are readily
distinguishable from the comparatively milder local effects of some non-front-fanged
colubroids. Aside from all hazard level 1 and two species of hazard level 2 (
P. olfersii
and
Malpolon monspessulanus
) “colubrids,” there are no documented systemic effects associated
with bites by the vast majority of non-front-fanged colubroids.
(A) Common lancehead (
Bothrops atrox
) envenoming, Pulcalpa, Peru.
Note the marked
edema, bleeding, ecchymoses, seepage of serosanguinous fluid, and evidence of extensive
inflammation.
(B) Jararaca (
Bothrops jararaca
) envenoming, São Paulo, Brazil.
The patient has large
bullae, cellulitic changes, and edema.
(C) Malayan pit viper (
Calloselasma rhodostoma
) envenoming, Chantaburi, Thailand.
The patient has severe blistering, edema, and early necrotic changes.
(D) Malayan pit viper (
Calloselasma rhodostoma
) envenoming, Trang, Thailand.
Note the
severe blistering, edema, and early necrotic changes.
