DG-72.13 Signal Background, Regulatory Noise, and Detection Threshold: Why the Honey Bee Colony Sometimes Delays Its Response

This working paper analyses how signal background and regulatory noise influence detection thresholds within the honey bee colony. The framework proposes that colonies do not react to pathogens as abstract biological entities, but to measurable deviations in thermal, chemical, vibrational, and microclimatic parameters within the nest. The concept of signal background is defined as the continuous baseline variability generated by temperature micro-fluctuations, humidity shifts, brood vibrations, pheromonal oscillations, and microbiome-derived metabolites. When this background remains stable, subtle deviations can be detected at low thresholds. When multiple disturbances occur simultaneously, regulatory noise increases, detection thresholds rise, and sensory precision declines. The paper argues that delayed response to stressors — including Varroa destructor, disease processes, or beekeeper interventions — may result from threshold shifts rather than absence of defensive capacity. Regulatory coherence, rather than pathogen presence alone, determines early detection efficiency. This document represents the third component of the DG-72 theoretical series, integrating sensory architecture (DG-72.11), threshold-based state transitions (DG-72.12), and noise-induced detection shifts into a unified regulatory framework for analysing colony resilience and systemic stability