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: ...

The remarkable diversity of the genus Chaerilobuthus Lourenço & Beigel, 2011 with the description of one more new species (Scorpiones: Chaerilobuthidae)

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The remarkable diversity of the genus Chaerilobuthus Lourenço & Beigel, 2011 with the description of one more new species (Scorpiones: Chaerilobuthidae)

Abstract 

One more new species of fossil scorpion belonging to the genus Chaerilobuthus Lourenço & Beigel, 2011 is described from Early Cretaceous Burmite. The description of this new species confirms once again the very speciose character of this genus. The new species presents some morphological particularities such as a total absence of eyes, attesting therefore the existence of an important morphological variability within Chaerilobuthus.

Lourenço W. R. & Velten J., 2024. – The remarkable diversity of the genus Chaerilobuthus Lourenço & Beigel, 2011 with the description of one more new species (Scorpiones: Chaerilobuthidae). Faunitaxys, 12(56): 1 – 5. DOI: https://doi.org/10.57800/faunitaxys-12(56)