Lemon sharks exhibited considerable individual variation in the
stress response (Tables 1–3). Across all treatments, significant
differences in blood chemistry between individual sharks were
established for ten of the eleven parameters analysed including
whole blood pH, carbon dioxide, lactate, bicarbonate, glucose, magnesium,
sodium, chloride, calcium and urea. There was no significant
variation in plasma potassium between sharks. Furthermore, there
was significant variation in both ventilation rates, and tail beat cycles
between individual sharks.