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Ontogenetic and geographic venom variation in the Great Basin Rattlesnake, Crotalus oreganus lutosus

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  Ontogenetic and geographic venom variation in the Great Basin Rattlesnake, Crotalus oreganus lutosus Abstract Venom composition among the species of the Western Rattlesnake clade is often quite variable, depending on several factors such as geographic location and ontogeny. Venom composition not only affects the ability of a snake to acquire prey efficiently, but it can also significantly impact snakebite symptomology. Currently, there has been limited characterization of the venom from the Great Basin Rattlesnake ( Crotalus oreganus lutosus ), a lineage that is broadly distributed in the intermontane western United States. In this study we sample 67 individual Great Basin Rattlesnakes collected in Idaho, Utah, California, and Arizona. We find evidence for substantial ontogenetic and geographic variation in venom composition. Of the six toxin families assessed, all showed ontogenetic shifts to varying extents, with some trends differing from those observed in other rattlesnake sp...

Urban Spider Assemblages in a Neotropical City: Diversity, Functional Composition, and Introduced Species in Public Parks of Chetumal, Mexico

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A new species of Strotarchus Simon, 1888 from Mexico and description of the male of the type species S. nebulosus Simon, 1888 (Araneae: Cheiracanthiidae)

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A review of Idiommata Ausserer, 1871 (Mygalomorphae: Barychelidae), with the description of a related new genus and new species of giant Australian brush-footed spiders

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Compsobuthus hadeki sp. n. from Iraq (Scorpiones: Buthidae)

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Egg-Carrying and Cheliceral Comb in Ibaloniinae Harvestmen From the Solomon Islands (Opiliones: Podoctidae)

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Huntsman spiders of the genus Sinopoda (Araneae, Sparassidae, Heteropodinae) from the Honghe Hani and Yi Autonomous Prefecture, southwestern China, with descriptions of two new species

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Multidimensional toxicity of snake venom causes multi-organ damage and treatment challenges: a narrative review

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A new Nemesia species from Spanish Catalonia (Araneae, Mygalomorphae, Nemesiidae, Haplonemesia)

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Mechanism of Anticoagulation, Inhibition of In Vivo Thrombus Formation, and Assessment of Preclinical Safety of a Snake Venom Phospholipase A2 Enzyme-inspired New Antithrombotic Custom Peptide

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First fossil of the pseudoscorpion family Chernetidae Menge, 1855 (Arachnida, Pseudoscorpiones) from mid-Cretaceous Burmese amber

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Beyond morphology alone: species delimitation, hemispermatophore comparisons and comments on the systematic status of Scorpiops Peters, 1861 (Scorpiones: Scorpiopidae) with a description of three new species from peninsular India

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Venom Variation as a Window into the Ecology and Evolution of Snakes

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Passing of Petra Sierwald

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ECOLOGICAL NICHE MODELS BY TITYUS SERRULATUS LUTZ & MELLO, 1922 AND TITYUS STIGMURUS (THORELL, 1876) (ARACHNIDA: SCORPIONES)

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Two New Troglobitic Species of Giupponia Pérez-González & Kury, 2002 (Opiliones: Gonyleptoidea) from Caves of Bahia, Northeastern Brazil

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A Structure-Informed Atlas of Venom-Derived Peptides Reveals the Organization of Chemical Space

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Transcriptomic Insights Into the Evolution of Snake Venom: Mechanisms, Diversity, and Adaptation

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Suitable habitats for Ebrechtella tricuspidata (Araneae, Thomisidae) in China under climate change: implications for biological control

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A review of the genus Tyrannochthonius (Pseudoscorpiones: Chthoniidae) from Guangxi, China, with the description of eleven new species

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Structural complexity and prey availability shape spider communities under retention forestry

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