Qualitative and Quantitative Proteomic Analysis of Venoms from Mexican Rattlesnakes

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  Qualitative and Quantitative Proteomic Analysis of Venoms from Mexican Rattlesnakes Abstract Despite the vast biodiversity of Mexican vipers, venom of endemic species has been barely studied. Here we analyzed the venom composition of three endemic species of rattlesnakes: Crotalus aquilus , C. triseriatus , and C. ravus . We used quantitative chromato-mass-spectrometry and compared venoms with C. molossus , a species commonly found in North America, in a comparative and phylogenetic framework. In total, we identified 165 proteins grouped in 19 main protein families, consistent with previous reports for viperid venoms. In C. aquilus and C. triseriatus , the most predominant protein-family type was Serine Proteases, and in C. triseriatus and C. molossus it was Snake Venom Metalloproteases. The Label-free quantification revealed a high proportion of Snake Venom Metalloproteases in C. aquilus , C. triseriatus , and C. molossus , reaching 28–47% of the total venom. In contrast, in ...

Two cases of malformation in the scorpion genus Androctonus Ehrenberg, 1828 from Central Algeria (Scorpiones: Buthidae)

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Two cases of malformation in the scorpion genus Androctonus Ehrenberg, 1828 from Central Algeria (Scorpiones: Buthidae)

Abstract 
This note concerns two cases of Androctonus species recently sampled from Ghardaïa region (Central Algeria). A remarkable malformation of one chela in Androctonus amoreuxi (Audouin, 1825) and a case of an enlargement of one chelicera in Androctonus australis (Linnaeus, 1758).

Oumyma, Zouatine & Bissati, Samia & Sadine, Salah. (2024). Two cases of malformation in the scorpion genus Androctonus Ehrenberg, 1828 from Central Algeria (Scorpiones: Buthidae). SERKET  The Arachnological Bulletin of the Middle East and North Africa. 20. 125-130.