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 ...

New data on the spider (Arachnida: Aranei) fauna of Mangystau Oblast, Kazakhstan

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New data on the spider (Arachnida: Aranei) fauna of Mangystau Oblast, Kazakhstan

ABSTRACT

A list of 84 spider species of Mangystau Oblast is provided, with the family Dysderidae and 39 species being recorded from there for the first time; five species are first found in Kazakhstan: viz., Argiope ahngeri Spassky, 1932, Uroctea grossa Roewer, 1960, Oxyopes badhyzicus Mikhailov et Fet, 1986, Evarcha nenilini Rakov, 1997, and Theridion arsia Zamani et Marusik, 2021. Distribution of all species that are new to Kazakhstan and Mangystau Oblast is discussed. Three species are described as new: viz., Eresus mangyshlakensis sp.n. (♂), Lycosa kuryk sp.n. (♀), Xysticus utochkini sp.n. (♂). A new synonymy has been established: Minosia simeonica Levy, 1995, syn.n. = Minosia karakumensis (Spassky, 1939). Based on the results of the present study and earlier published data, the total number of spider species recorded from Mangystau Oblast has increased to 195 species in 26 families.

Esyunin, S. L., Efimik, V. E., Nekhaeva, A. A., Kim, L. V., Valuev, V. A., Kabdrakhimov, A. A., Tuneva, T. K. & Akhmedenov, K. M. (2025). New data on the spider (Arachnida: Aranei) fauna of Mangystau Oblast, Kazakhstan. Arthropoda Selecta 34(3): 426-446.