Venom composition of the Iberian adder (Vipera seoanei) from northern Portugal reveals limited sex and size variation

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  Venom composition of the Iberian adder (Vipera seoanei) from northern Portugal reveals limited sex and size variation Abstract Snake venom is a complex and dynamic ecological trait, with high potential for intraspecific variation. In this study, the venom composition of the Iberian adder ( Vipera seoanei ) from the Peneda Mountains of northern Portugal was investigated to explore whether venom varies with body size and sex. Venom proteomes from six individuals representing juvenile, subadult, and adult males and females were characterised using LC–MS/MS, while individual variation was assessed from SDS–PAGE profiles of 18 snakes. LC–MS/MS identified 144 proteins, dominated by phospholipases A 2 (PLA 2 ), snake venom serine proteases (svSP), and C-type lectin-related proteins (CTL). Descriptive comparisons revealed contrasting individual profiles, particularly between the juvenile male, characterised by high svSP and svMP abundance, and the juvenile female, characterised by high ...

The Complete Genome Sequences of two Species of Stegodyphus Spiders (Araneae: Eresidae)

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The Complete Genome Sequences of two Species of Stegodyphus Spiders (Araneae: Eresidae)

Abstract

We present the complete genome sequences of Stegodyphus bicolor and Stegodyphus dumicola. Illumina sequencing was performed on genetic material from specimens collected in Namibia in March 2023. The reads were assembled using a de novo method followed by a finishing step. The raw and assembled data are publicly available via Genbank.

Colston, Timothy J., Steven T. Cassidy, Kara J.M. Taylor, Stacy Pirro, Martha Haufiku, Tresia Kavili, Seth J. Eiseb, and Carl N. Keiser. 2024. “The Complete Genome Sequences of Two Species of Stegodyphus Spiders (Araneae: Eresidae).” Biodiversity Genomes, August. https://doi.org/10.56179/001c.122353.