Crotalus horridus

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Crotalus horridus
Stato di conservazione
Rischio minimo[1]
Classificazione scientifica
DominioEukaryota
RegnoAnimalia
PhylumChordata
ClasseReptilia
OrdineSquamata
SottordineSerpentes
FamigliaViperidae
SottofamigliaCrotalinae
GenereCrotalus
SpecieC. horridus
Nomenclatura binomiale
Crotalus horridus
Linnaeus, 1758

Crotalus horridus Linnaeus, 1758 è un serpente velenoso della famiglia Viperidae, diffuso nella parte orientale del Nord America, dall'Ontario (Canada) fino al Nebraska e al Texas (Stati Uniti).[2]

Descrizione

È tipicamente color giallo-marrone, più chiaro al di sotto, con strie nere. La fine della coda si scurisce sino a diventare tutta nera.

Veleno

Il veleno del C. horridus è ad azione principalmente emotossica, causando tumefazione, danno tissutale, e necrosi, ma gli scienziati hanno isolato esemplari che hanno una significativa componente neurotossica nel veleno, che colpisce il sistema nervoso e circolatorio. Come altre vipere, sono capaci di fare quello che è chiamato un «morso asciutto», col quale il veleno non è iniettato; però ogni morso di serpente velenoso dovrebbe esser considerato serio, perché gli effetti del veleno possono non essere subito avvertiti. Nel 1993, l'erpetologo Mark O'Shea fu morso da un C. horridus e quasi morì.[3]

Note

  1. ^ (EN) Hammerson, G.A. 2007, Crotalus horridus, su IUCN Red List of Threatened Species, Versione 2020.2, IUCN, 2020.
  2. ^ Crotalus horridus, in The Reptile Database. URL consultato il 28 luglio 2014.
  3. ^ Mark O'Shea, in MARK O'SHEA'S REPTILE WORLD: BRIEF HISTORY. URL consultato il 19 giugno 2016.

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