Scorpions of Angola (Arachnida, Scorpiones). Part I. Family Buthidae, with descriptions of two new species.

Posted by
  Scorpions of Angola (Arachnida, Scorpiones). Part I. Family Buthidae, with descriptions of two new species. Abstract All scorpion species of the family Buthidae known from Angola are listed, with color photographs and maps of their distribution. Diagnosis of Babycurus ansorgei Hirst, 1911 is revised; its male is described for the first time. Babycurus crassicaudatus Roewer, 1952, is revalidated (it was erroneously synonymized with B. ansorgei , since the females of both species are morphologically almost identical). Uroplectes angolensis sp. n . and U. xavieri sp. n. are described from Angola. Validity of Uroplectes ngangelarum Monard, 1930 is confirmed as different from U. planimanus (Karsch, 1879); its lectotype is designated. Lectotype is also designated for Uroplectes planimanus kuanyamarus Monard, 1937. Female of Uroplectes ebog o Kovařík et al., 2024 from Cameroon is recorded for the first time; its pectines are imaged (Fig. 603). Uroplectes machadoi Lourenço, 2...

Venom extraction method influences venom composition and potency in the giant house spider Eratigena atrica (C. L. Koch, 1843)

Posted by


 

Venom extraction method influences venom composition and potency in the giant house spider Eratigena atrica (C. L. Koch, 1843)

Abstract

Extraction is the first step when investigating venom composition and function. In small invertebrates, widely used extraction methods include electrostimulation and venom gland extraction, however, the influence of these methods on composition and toxicology is poorly understood. Using the Giant House Spider Eratigena atrica as a model, we show that electrostimulation and venom gland removal extraction methods produce different protein profiles as assessed by Coomassie-stained SDS-PAGE and significantly different potencies in the cricket Acheta domesticus.

Keith Lyons, Michel M. Dugon, Aoife Boyd, Kevin Healy, Venom extraction method influences venom composition and potency in the giant house spider Eratigena atrica (C. L. Koch, 1843), Toxicon, Volume 234, 2023, 107303, 

ISSN 0041-0101, https://doi.org/10.1016/j.toxicon.2023.107303.(https://www.sciencedirect.com/science/article/pii/S0041010123002891)