A pseudoscorpion clinging to a cave salamander: phoresy or failed predation?

  A pseudoscorpion clinging to a cave salamander: phoresy or failed predation? Abstract Pseudoscorpions are well known for phoretic associations with arthropods, but interactions with amphibians are rarely documented. Here we report a pseudoscorpion attached to the left palpebral region of an adult male Italian cave salamander, Speleomantes italicus , observed during a visual survey in a karst cave in Tuscany, Italy. The pseudoscorpion, assigned on the basis of visible morphology and locality to Chthonius cf. elongatus , was grasping a minute cutaneous fold on the lower margin of the left upper eyelid with one chela while the salamander moved slowly over the rock surface. No handling was performed and the initial contact between the two animals was not observed. The event therefore cannot be interpreted unambiguously, but may represent opportunistic phoresy or defensive attachment following a failed predation attempt. To our knowledge, this is the first published observation of a ...

Exploring high molecular weight components in Tityus serrulatus venom


Exploring high molecular weight components in Tityus serrulatus venom

ABSTRACT


Our study identified high-molecular-weight compounds from Tityus serrulatus venom (TsV), and most of them have not yet been well explored. TsV was fractionated using FPLC system with different columns, analyzed by SDS-PAGE, and characterized by MALDI-TOF/TOF. Our study showed that TsV contains several high-molecular-weight compounds, including CRISPs, metalloproteinase and hyaluronidase. We show how these molecules can be obtained from TsV, enabling future studies about their molecular structures and biological actions, expanding knowledge about this venom.
Alano-da-Silva, N. M., Sousa de Oliveira, I., Cardoso, I. A., De Castro Figueiredo Bordon, K., & Arantes, E. C. (2025). Exploring high molecular weight components in Tityus serrulatus venom. Toxicon, 108240. https://doi.org/10.1016/j.toxicon.2025.108240