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 ...

Three new Cybaeodamus Mello-Leitão, 1938 species from Brazil (Araneae, Zodariidae)

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Three new Cybaeodamus Mello-Leitão, 1938 species from Brazil (Araneae, Zodariidae)

Abstract

Three new Brazilian species of the zodariid genus Cybaeodamus Mello-Leitão, 1938 are described: C. ampullatus sp. nov. (♂♀), C. spinosissimus sp. nov. (♂) and C. malkini sp. nov. (♂). Descriptions are accompanied with high-quality illustrations and microphotographs. An updated distribution map and a key to all the species in the genus are presented. The morphological diagnostic characters of the genus are discussed.

Henrard, A., Jocqué, R., & Carvalho, L. S. (2025). Three new Cybaeodamus Mello-Leitão, 1938 species from Brazil (Araneae, Zodariidae). European Journal of Taxonomy, 1004(1), 92–119. https://doi.org/10.5852/ejt.2025.1004.2965