Omnivory in predatory ladybird beetles is widespread and driven by an appetite for sterols

Todd Ugine, Stuart Krasnoff & Spencer Behmer
1. Animals maintain physiological and behavioral systems that allow them to detect and consume specific macro- and micronutrients to maximize their fitness. One common physiological system is the nutrient-state-dependent or demand-driven appetite. These systems are well described for macronutrient regulation, but not for micronutrients. 2. Sterols are essential micronutrients that all animals need to survive. They are the backbone of many hormones, important in cell signaling, and an integral component of cell membranes. 3. Lady...
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