As the weather turns cooler, pay attention to stress responses in farmed species.
2026-06-05
“Stress” is a common physiological state in aquaculture species. It encompasses the array of physiological stress responses that an organism mounts when exposed to external environmental changes or internal perturbations. When under stress, farmed species activate neuroendocrine pathways to mobilize various organs and systems in response to abrupt environmental shifts, thereby depleting substantial energy reserves and compromising immune function. Consequently, this physiological process often serves as a trigger for disease onset.
Date: September 26, 2024
Location: Fengcheng Town, Jimo District
Cultivation area: 18 mu
Cultured species: swimming crab
I. Problem Description
Around the autumn equinox, consecutive rainfall has lowered salinity in aquaculture ponds, leading to physiological deterioration in swimming crabs, including thinner shells and reduced tolerance to air exposure. Furthermore, a sharp temperature drop of 8°C within two days has triggered stress responses, manifesting as lethargy, decreased feeding or refusal to feed, sluggish reactions to external stimuli, soft or deformed carapaces, and incomplete molting.
II. Solution
Use Glucose‑Ion Calcium at 20–30 mu per bag (to accelerate shell hardening and replenish energy) + Aquaculture‑Specific Vitamin C at 2–3 mu per bag (to regulate metabolism and boost immunity) + Stress‑Relief Detoxifier at 3–4 mu per bag (to detoxify and promote growth).
III. Feedback on Results
Crab vitality has improved markedly, with a strong appetite, reduced instances of soft-shell syndrome, and a significant enhancement in overall physical condition. 
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