First chance to see: New jumping-spider species from Batanta, Indonesia (Araneae, Salticidae, Euophryini)

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  First chance to see: New jumping-spider species from Batanta, Indonesia (Araneae, Salticidae, Euophryini) Abstract The first spider records of Batanta, Birie, and Arefi islands, Raja Ampat, Indonesia are presented in this study. Three new species in the genus Canama Simon, 1903, Canama horobi sp. nov . (male), Canama limagigi sp. nov . (male) and Canama wanita sp. nov . (female) are described. Two Indonesian salticids, originally placed in Bathippus Thorell, 1892 and known from their original descriptions only, Bathippus dentiferellus Strand, 1911 and Bathippus seltuttensis Strand, 1911, are redescribed and illustrated. Due to their morphological similarity to the type species, three new combinations have been proposed: Canama dentiferellus (Strand, 1911), comb. nov ., Canama seltuttensis (Strand, 1911), comb. nov . and Canama dilanians (Thorell, 1881), comb. nov . To confirm the phylogenetic placement of the new species, we carried out a small phylogenetic anal...

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

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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)