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 genome sequence of the Black Lace-weaver spider, Amaurobius ferox (Walckenaer, 1830)

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The genome sequence of the Black Lace-weaver spider, Amaurobius ferox (Walckenaer, 1830)

Abstract

We present a genome assembly from an individual female Amaurobius ferox (the Black Lace-weaver; Arthropoda; Arachnida; Araneae; Amaurobiidae). The genome sequence is 3,564.8 megabases in span. Most of the assembly is scaffolded into 23 chromosomal pseudomolecules, including the X1, X2 and X3 sex chromosomes. The mitochondrial genome has also been assembled and is 14.24 kilobases in length.

Henriques S, Natural History Museum Genome Acquisition Lab, Darwin Tree of Life Barcoding collective et al. The genome sequence of the Black Lace-weaver spider, Amaurobius ferox (Walckenaer, 1830) [version 1; peer review: 2 approved]. Wellcome Open Res 2024, 9:105 (https://doi.org/10.12688/wellcomeopenres.21080.1)