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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: ...

From oceans to mountains: global dispersal and local diversification in Rhene (Araneae: Salticidae)

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Systematic revision of the Savignia genus group (Araneae: Linyphiidae: Erigoninae) with notes on their cephalic lobe evolution

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First Record of Predation on a Regal Black-striped Snake, Coniophanes imperialis (Serpentes: Dipsadidae), by a Mexican Red-rump Tarantula, Tliltocatl vagans (Araneae: Theraphosidae), in Quintana Roo, Mexico

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First catalog of spiders of Morocco (Arachnida: Araneae): A critical review of all spider species cited from Morocco with their localities

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DNA metabarcoding to estimate diet overlap between the introduced Joro spider (Trichonephila clavata) and three native orb-weaving spiders

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Notes on the identity of the orb-weaver spider Araneus nox Simon, 1877 (Araneae: Araneidae) from India, including its transfer to Eriovixia Archer, 1951 and one new synonymy

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A new species of Oecobius and the first record of Uroctea thaleri from Saudi Arabia (Araneae: Oecobiidae)

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Chromosome-level genome assembly of the jumping spider Spartaeus platnicki

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On a new genus of dwarf tarantulas (Araneae: Mygalomorphae: Theraphosidae) endemic from Peru: evidence from morphology and molecular phylogeny, with description of three new species

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One time only: determining spider diversity along a latitudinal gradient in South Africa's arid Succulent Karoo and Desert biomes using a rapid sampling protocol

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Taxonomic and Faunistic Contributions to the Spider Fauna of Iraq (Araneae)

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Three new species of Hamataliwa Keyserling, 1887 from Xizang, China (Araneae, Oxyopidae)

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The Journal of Arachnology VOL. 53 · NO. 3 | 2025–2026

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Ballistic high-powered spider webs overcome dangerous prey defenses

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A new species of the genus Selenocosmia Ausserer, 1871 (Araneae: Theraphosidae) from the karst landscapes of Meghalaya, India

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The first known troglomorphic, eyeless spider wasp (Hymenoptera: Pompilidae): Troglopompilus miracaecatus gen. et sp. nov. from the Nullarbor Caves, Western Australia

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AaTs-1, a Tetrapeptide from Scorpion Venom Mitigates Demyelination and Neuroinflammation in a Cuprizone-Induced Model of Multiple Sclerosis

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New data on spiders (Arachnida, Araneae) of Türkiye, with descriptions of four new species

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First record of Ischnocolus Ausserer, 1871 (Araneae: Theraphosidae) from Turkey June 2026

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Morphological and Molecular Data Reveal Two New Cryptic Spider Species of the Pholcus yichengicus Species Group (Araneae, Pholcidae) from Central China

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