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: ...

Description of a new species of the genus Potosa Goodnight & Goodnight, 1947 (Opiliones: Laniatores: Stygnopsidae: Karosinae) from Hidalgo, Mexico

Posted by

 


Description of a new species of the genus Potosa Goodnight & Goodnight, 1947 (Opiliones: Laniatores: Stygnopsidae: Karosinae) from Hidalgo, Mexico

Abstract

Potosa pisaflores sp. nov.is described based on specimens  collected  from  Cueva  del  Caracol,  Pisaflores,  Hidalgo, Mexico. This is the fourth species of the genus and only the second in which females have been collected. The new   species   is   similar   to   Potosa   dybasi   Goodnight   &   Goodnight,  1947,  but  it  can  be  recognized  by  the  high  number  of  tarsomeres  on  legs  II  and  the  general  shape  of  male genitalia.

Cruz López, Jesús Alberto. 2025. «Description of a New Species of the Genus Potosa Goodnight & Goodnight, 1947 (Opiliones: Laniatores: Stygnopsidae: Karosinae) from Hidalgo, Mexico ». ACTA ZOOLÓGICA MEXICANA (N.S.) 41 (1):1-8. https://doi.org/10.21829/azm.2025.4112769.