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

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  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: ...

Four new species of the spider genus Liphistius (Araneae, Mesothelae, Liphistiidae, Liphistiinae) from Myanmar

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Four new species of the spider genus Liphistius (Araneae, Mesothelae, Liphistiidae, Liphistiinae) from Myanmar

Abstract

Four new species of Liphistius belonging to the birmanicus species group are described from Myanmar based on both sexes: L. kalaw Zhan & Xu, sp. nov. (♂♀), L. kanpetlet Zhan & Xu, sp. nov. (♂♀), L. nawngau Zhan & Xu, sp. nov. (♂♀) and L. rostratus Zhan & Xu, sp. nov. (♂♀). Currently, Myanmar stands as the westernmost country where Liphistius is distributed, with the new species L. kanpetlet sp. nov. being found in the westernmost region of Myanmar.

Xu X, Zhan Y, Aung KPP, Liu F, Yu L, Li D (2024) Four new species of the spider genus Liphistius (Araneae, Mesothelae, Liphistiidae, Liphistiinae) from Myanmar. ZooKeys 1210: 99-115. https://doi.org/10.3897/zookeys.1210.123986