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 ...

A new species of Tityus Koch, 1836 (Scorpiones: Buthidae), from the Cordillera Oriental (Colombia)

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A new species of Tityus Koch, 1836 (Scorpiones: Buthidae), from the Cordillera Oriental (Colombia)

Abstract . – A new species belonging to the genus Tityus ( Atreus ) (family Buthidae, CL Koch, 1837) is described from the Colombian Cordillera Oriental on the basis of three specimens collected in La Vega (Cundinamarca department). Specimens of Tityus ( Atreus ) icarus sp . n . were collected in a patch of medium-altitude broadleaf rainforest, 1350 asl The new species shares affinities with T. ( Atreus ) antioquensis Lourenço & Otero-Patiño , 1998, and T. ( Atreus ) nematochirus Mello-Leitão, 1940, but can be readily distinguished from these two taxa based on morphometric differences and a combination of several characters. The new species is the 229th described in the genus. 

Laborieux L., 2024. – A new species of Tityus Koch, 1836 (Scorpiones: Buthidae), from the Cordillera Oriental (Colombia). Faunitaxys , 12(41): 1 – 9. 

https://doi.org/10.57800/faunitaxys-12(41) - https://zoobank.org/C98613C0-E202-4DDE-99BB-FF6AB378A099