The effect of hypoxia on ventilation frequency in startled common sole Solea solea.
Ventilation frequency (F(V) ) in motionless common sole Solea solea was measured before and after a startling stimulus in normoxia and in hypoxia (15% air saturation). Startling reduced F(V) in normoxia (from mean ±s.e. 41 ± 3·3 beats min⁻¹ to near zero, i.e. 2·0 ± 1·8 beats min⁻¹) and in hypoxia (from mean ±s.e. 80 ± 4·4 to 58·8 ± 12·9 beats min⁻¹). It is suggested that the maintenance of high F(V) in hypoxia may increase the probability of detection by predators compared to normoxia.
LIENSs, UMR 6250, CNRS-University of La Rochelle, 17000 La Rochelle, France CNR, IAMC, Loc. Sa Mardini, 09072 Torregrande-Oristano, Italy.
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Cannas
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Domenici
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Lefrançois
D000818:Animals; D005412:Flatfishes / Q000502:physiology*; D000860:Hypoxia / Q000473:pathology / Q000662:veterinary*; D012119:Respiration