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

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  Transcriptomic Insights Into the Evolution of Snake Venom: Mechanisms, Diversity, and Adaptation Abstract Snake venoms are evolutionarily refined biochemical arsenals composed of diverse toxins with complex functional roles in predation, defense, and competition. Over the past 2 decades, transcriptomic approaches have transformed venom research by enabling high-resolution insights into gene expression dynamics, molecular diversity, and the evolutionary mechanisms driving venom variation across lineages. In this review, we present a comprehensive synthesis of snake venom transcriptomics literature and propose a conceptual framework structured around three major axes: (1) gene family expansion through duplication and neofunctionalization; (2) regulatory complexity encompassing transcriptional, posttranscriptional, and epigenetic modulation; and (3) ecological selection pressures shaping venom profiles in response to diet, habitat, and interspecific interactions. We integrate findin...

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

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Image Credit: By Lucarelli - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=10441504

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

Abstract

The crab spider Ebrechtella tricuspidata is a vital indigenous natural enemy in China’s agroecosystems, yet its potential distribution dynamics under changing climates remain unquantified. We utilized optimized Maximum Entropy (MaxEnt) models—configured with Hinge-Product-Threshold feature classes and a regularization multiplier of 1.5 based on AICc selection—to identify key distributional drivers and project future range shifts. The model demonstrated high discriminatory ability (mean AUC = 0.886). Annual Precipitation (Bio12) and Mean Temperature of the Warmest Quarter (Bio10) were identified as the primary environmental determinants, with the species exhibiting a distinct preference for warm (20–28 °C) and humid (> 500 mm) habitats. Under current conditions, the total suitable habitat is approximately 2.15 × 106 km2. Future projections indicate a robust northward and westward expansion, with high-suitability core habitats projected to increase nearly fourfold by the 2070s under the high-emission SSP5-8.5 scenario. Crucially, we emphasize that realized colonization will be contingent upon the species' dispersal capabilities, phenological synchronization with floral resources, and complex biotic interactions. These findings provide a potential spatial-temporal framework for “climate-smart” pest management, suggesting that proactive habitat manipulation could facilitate the long-term efficacy of this predator in a warming climate.

Liu, T., Cong, C., Feng, X. et al. Suitable habitats for Ebrechtella tricuspidata (Araneae, Thomisidae) in China under climate change: implications for biological control. Environ Monit Assess 198, 624 (2026). https://doi.org/10.1007/s10661-026-15484-x