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 ...

Description of the female huntsman spider Curicaberis pedregal Rheims (Araneae: Sparassidae) from central Mexico and a new record from Tlaxcala state

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Description of the female huntsman spider Curicaberis pedregal Rheims (Araneae: Sparassidae) from central Mexico and a new record from Tlaxcala state

ABSTRACT

The female of the spider Curicaberis pedregal Rheims, 2015 (Sparassidae) is described for the first time. The description is based on two adult females from the state of Tlaxcala, Mexico. Species corroboration is based on two males of the species, collected together with the females. With these new records, the species is currently known to be distributed in the central Mexican states of Mexico City and Tlaxcala.

Valdez Mondragón, Alejandro. 2025. «Description of the Female Huntsman Spider Curicaberis Pedregal Rheims (Araneae: Sparassidae) from Central Mexico and a New Record from Tlaxcala State». ACTA ZOOLÓGICA MEXICANA (N.S.) 41 (1):1-10. https://doi.org/10.21829/azm.2025.4112741.