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Updated: Jul 23, 2026
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Basic Methods for the Study of Reproductive Ecology of Fish in Aquaria
Published on: July 20, 2017
Respiration of Benthopelagic Fishes: In situ Measurements at 1230 Meters
Science (New York, N.Y.)
|April 5, 1974
Abstract:
The respiration rate in situ of two common benthopelagic fishes, Coryphaenoides acrolepis and Eptatretus deani, was monitored at 1230 meters in the San Diego Trough. The respiration rate of C. acrolepis was two orders of magnitude lower and that of E. deani was significantly lower (P < .05) than rates in comparable shallow-water species.
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01:29Assessment of Ventilation II: Respiratory Depth and Rhythm
Respiratory Depth
Respiratory depth measures the volume of air inhaled or exhaled during a breath. It can vary from shallow to deep and typically remains consistent when a person is at rest or asleep. Occasionally, individuals will automatically inhale deeply, known as sighing, which inflates the lungs with more air than normal breathing.
To assess respiratory depth, observe the degree of chest excursion or movement:
Respiratory depth measures the volume of air inhaled or exhaled during a breath. It can vary from shallow to deep and typically remains consistent when a person is at rest or asleep. Occasionally, individuals will automatically inhale deeply, known as sighing, which inflates the lungs with more air than normal breathing.
To assess respiratory depth, observe the degree of chest excursion or movement:
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