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Nature & Animals

Which impairment results when swim bladder barotrauma occurs during rapid ascent in fish lacking a pneumatic duct?

A)Esophageal rupture due to overexpansion
B)Spinal cord compression from inflated bladder
C)Kidney failure due to reduced perfusion
D)Gill lamellae collapse inhibiting oxygen uptake

💡 Explanation

When rapid ascent occurs and fish lack a pneumatic duct, swim bladder barotrauma results due to Boyle's Law (pressure decreasing with volume increase), leading to overexpansion, compressing surrounding tissues. Therefore spinal cord compression results rather than rupture, failure or collapse, which arise from alternate pressures or structural weaknesses.

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