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 ...

Four new species of Linyphiidae spiders (Arachnida: Araneae) from Jiangjin District of Chongqing, China

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Four new species of Linyphiidae spiders (Arachnida: Araneae) from Jiangjin District of Chongqing, China

Abstract

An ongoing survey on spider diversity in Jiangjin District, Chongqing City has the goal of documenting the regional diversity of spiders. In this context, we here describe four new species of the spider family Linyphiidae from Jiangjin District of Chongqing: Gonatium tridentatum sp. nov. (♂♀), Oedothorax simianensis sp. nov. (♂), Wuliphantes dahonghaiensis sp. nov. (♂♀) and Yuelushannus baishaensis sp. nov. (♂). Detailed descriptions, photographs of copulatory organs and somatic features are presented. Additionally, color photos of Ceratinella brevis (Wider, 1834) (♂) and distribution map of all five species are provided.

Irfan, M., Zhang, C.-C., Cai, Y.-J. & Zhang, Z.-S. (2025) Four new species of Linyphiidae spiders (Arachnida: Araneae) from Jiangjin District of Chongqing, China. Zootaxa, 5647 (5), 435–450. https://doi.org/10.11646/zootaxa.5647.5.2