Distinct pathophysiological mechanisms of Heterometrus laoticus and Lychas mucronatus scorpion venoms on cardiovascular and renal functions

Posted by
  Distinct pathophysiological mechanisms of Heterometrus laoticus and Lychas mucronatus scorpion venoms on cardiovascular and renal functions Abstract Background:    Heterometrus laoticus and Lychas mucronatus are widely distributed in Southeast Asia, yet their pathophysiological effects of both venoms remain poorly characterized due to low human fatality rates. This study compared their venom compositions and acute cardiovascular and renal effects. Methods:   Anesthetized male New Zealand White rabbits were monitored for blood pressure (BP), heart rate (HR), and renal clearance following intravenous administration of crude venom (0.5 mg/kg). Venom components were identified via LC-MS/MS, and hematological/biochemical parameters were assessed. Results:    H. laoticus venom induced a rapid, transient hypotension ( p < 0.05), followed by a mild, prolonged hypotensive phase (up to 120 min). Conversely, L. mucronatus venom elicited a biphasic response: ...

Five new species and one new record of armored spiders (Araneae, Tetrablemmidae) from Thailand

Posted by

 


Five new species and one new record of armored spiders (Araneae, Tetrablemmidae) from Thailand

Abstract

Five new cave-dwelling species and one newly recorded litter-dwelling species belonging to the family Tetrablemmidae are described from Thailand, i.e., Ablemma erna Lehtinen, 1981 (♂♀), A. theppratan Tong & Li, sp. nov. (♂♀), A. yamae Tong & Li, sp. nov. (♂♀), Shearella khaoplu Tong & Li, sp. nov. (♂), S. thamphothisat Tong & Li, sp. nov. (♂) and Tetrablemma lorkor Tong & Li, sp. nov. (♂). Diagnoses and illustrations for all six species are given.

Shi S, Bian D, Tong Y, Li S (2026) Five new species and one new record of armored spiders (Araneae, Tetrablemmidae) from Thailand. ZooKeys 1279: 285-310. https://doi.org/10.3897/zookeys.1279.189587