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 baffling case of morphological, molecular and ecological discordance in Isometrus Ehrenberg, 1828 (Scorpiones: Buthidae) with the description of five new species from southern India

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A baffling case of morphological, molecular and ecological discordance in Isometrus Ehrenberg, 1828 (Scorpiones: Buthidae) with the description of five new species from southern India

Abstract

The Western and Eastern Ghats of the Peninsular India are known for their high biological diversity, which is shaped due to various geological barriers and environmental parameters. Scorpion diversity in Peninsular India remains poorly known thereby warranting a need to undertake rigorous arachnological surveys. In our continued effort to discover scorpion lineages hitherto unknown to science, we describe five new species of the genus Isometrus Ehrenberg, 1828 which were obtained from southern India, and discuss morphological, molecular and ecological discordance within this genus. The validity of Reddyanus atherii Amir and Kamaluddin, 2008, Isometrus liaqatii Amir and Kamaluddin, 2008 and Isometrus formosus Pocock, 1894 is also commented upon, with implications to propose taxonomic changes within the genus.

Shubhankar Deshpande, Gaurang Gowande, Nikhil Dandekar, Mihir Joshi, Deshabhushan Bastawade, Shauri Sulakhe, A baffling case of morphological, molecular and ecological discordance in Isometrus Ehrenberg, 1828 (Scorpiones: Buthidae) with the description of five new species from southern India, Zoologischer Anzeiger, 2023, ISSN 0044-5231,

https://doi.org/10.1016/j.jcz.2023.11.001.

(https://www.sciencedirect.com/science/article/pii/S0044523123001055)