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 ...

The remarkable diversity of the genus Chaerilobuthus Lourenço & Beigel, 2011 with the description of one more new species (Scorpiones: Chaerilobuthidae)

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The remarkable diversity of the genus Chaerilobuthus Lourenço & Beigel, 2011 with the description of one more new species (Scorpiones: Chaerilobuthidae)

Abstract 

One more new species of fossil scorpion belonging to the genus Chaerilobuthus Lourenço & Beigel, 2011 is described from Early Cretaceous Burmite. The description of this new species confirms once again the very speciose character of this genus. The new species presents some morphological particularities such as a total absence of eyes, attesting therefore the existence of an important morphological variability within Chaerilobuthus.

Lourenço W. R. & Velten J., 2024. – The remarkable diversity of the genus Chaerilobuthus Lourenço & Beigel, 2011 with the description of one more new species (Scorpiones: Chaerilobuthidae). Faunitaxys, 12(56): 1 – 5. DOI: https://doi.org/10.57800/faunitaxys-12(56)