Study on the obtaining of Tityus trivittatus venom in Argentina

Redefinition of the identity and phylogenetic position of Tityus trivittatus Kraepelin 1898, and description of Tityus carrilloi n. sp. (Scorpiones; Buthidae), the most medically important scorpion of southern South America.

“…Remarkably, the toxicity of the venom of the population of T. carrilloi n. sp. from the area of Buenos Aires city, the biggest urban area occupied by this species, is comparably lower to those from other regions (de Roodt et al, 2010(de Roodt et al, , 2014(de Roodt et al, , 2019; most probably due to this it has not caused deaths yet in Buenos Aires despite the relatively high number of accidents in the area. The reason for this lower toxicity has not yet been explained, but it has to be highlighted that the population from Buenos Aires represents the southernmost extreme of distribution for this species (and the genus), and is relatively isolated from other pop-ulations (Ojanguren-Affilastro et al,.…”

“…is clinically similar in human envenoming (de Roodt et al 2003), and experimental envenomation (de Roodt et al, 2001(de Roodt et al, , 2010, to those described for other Tityus species of the nominotypical subgenus of sanitary importance. Its toxicity is in the range of that described for other closely related species; toxicity in 20g mice is around 0.6 μg/g, but may vary in a range from 0.2 to 1.6 μg/g (de Roodt et al 2010(de Roodt et al , 2019, and an important variation in toxicity, up to three fold, was observed in the venom from specimens of the same region (de Roodt et al, 2019). The electrophoretic profiles of the venom of T. carrilloi n. sp.…”

“…Most of which has been described during the last years about the venom, antivenom, tox-icity and lethality of T. trivittatus actually corresponds to T. carrilloi n. sp. because most studies were carried out on Argentinean populations of this species (Coronas et al, 2003(Coronas et al, , 2015de Roodt et al, 2001de Roodt et al, , 2010de Roodt et al, , 2019. Therefore, the taxonomic changes herein presented, change the scenery of what is known about the scorpionism problem in the region.…”

“…The scorpion genus Tityus includes all medically important species of southern South America, being responsible for several deaths every year in this region (de Roodt et al, 2003(de Roodt et al, , 2009(de Roodt et al, , 2010(de Roodt et al, , 2019Ministerio de Salud, 2011;Blanco et al, 2016). Some of these species of medical importance are parthenogenetic and synanthropic, which makes them extremely efficient invaders of human settlements Lourenço, 2015).…”