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 ...

A new contribution to the study of subfamily Tridenchthoniinae Balzan, 1892 (Pseudoscorpiones: Chthoniidae) from the late Eocene Baltic amber with the description of Baltochthonius andrushchenkoi gen. et sp. nov. and Heterolophus eridanus sp. nov.

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A new contribution to the study of subfamily Tridenchthoniinae Balzan, 1892 (Pseudoscorpiones: Chthoniidae) from the late Eocene Baltic amber with the description of Baltochthonius andrushchenkoi gen. et sp. nov. and Heterolophus eridanus sp. nov.

Abstract

Here we describe two new fossil species and one new genus of pseudoscorpions, found in the late Eocene Baltic amber. Baltochthonius andrushchenkoi gen. et sp. nov. and Heterolophus eridanus sp. nov. are assigned to the subfamily Tridenchthoniinae (Pseudoscorpiones: Chthoniidae). We present an updated diagnostic key for the tribes, genera and subgenera of Tridenchthoniinae. The biogeographic, paleohabitat and ecological features of new species are presented and compared to the related extinct and extant species of the subfamily Tridenchthoniinae.

Turbanov, I.S., Kolesnikov, V.B., Shadrin, D.S. & Vorontsov, D.D. (2026) A new contribution to the study of subfamily Tridenchthoniinae Balzan, 1892 (Pseudoscorpiones: Chthoniidae) from the late Eocene Baltic amber with the description of Baltochthonius andrushchenkoi gen. et sp. nov. and Heterolophus eridanus sp. nov. Zootaxa, 5807 (1), 125–149. https://doi.org/10.11646/zootaxa.5807.1.5