Gas exchange and control of breathing in reptiles

Glass, Mogens L.; Wood, Stephen C.

doi:10.1152/physrev.1983.63.1.232

Cited by 106 publications

(40 citation statements)

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“…Our R 1 Q 10 and R 2 Q 10 values frame the Q 10 value of 2.4 calculated from the oxygen consumption of unrestrained, captive loggerhead turtles kept in water between 10 and 30°C (Lutz et al 1989). Typical Q 10 values found for reptiles are between 2 and 3 (Glass & Wood 1983). Our AQ 10 = 2.3 found during the daytime is well within this range.…”

Section: Temperature Fluctuations and Dive Durationsupporting

confidence: 80%

Cold-blooded divers: temperature-dependent dive performance in the wild hawksbill turtle Eretmochelys imbricata

Storch

Wilson²,

Hillis-Starr³

et al. 2005

Mar. Ecol. Prog. Ser.

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Sea turtles are diving ectotherms that are influenced by the temperature of the ambient water, although swimming activity can temper this influence via increased body temperatures enhanced by the thermal inertia of these large animals. We successfully equipped 3 nesting hawksbill turtles Eretmochelys imbricata with time-depth recorders (TDRs) to monitor water temperature and dive depth over the duration of the re-migration interval between 2 successive nesting seasons. Data sets for up to 22 mo were obtained, showing fluctuations in water temperature over the seasons. Nocturnal dive behaviour of the turtles at their foraging grounds revealed an increase in dive duration with decreasing water temperatures in winter. A model is provided to estimate dive duration for the range of temperatures experienced by this species in the wild. The data on vertical velocity during ascent and descent phases as a parameter for activity failed to show thermal dependence. It is concluded that changes in water temperature have an effect on the behavioural ecology of hawksbill turtles.

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Section: Temperature Fluctuations and Dive Durationsupporting

confidence: 80%

Cold-blooded divers: temperature-dependent dive performance in the wild hawksbill turtle Eretmochelys imbricata

Storch

Wilson²,

Hillis-Starr³

et al. 2005

Mar. Ecol. Prog. Ser.

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show abstract

“…In turtles, cardiorespiratory adjustments during hypoxia are rapid, including an increase in total expired volume (reviewed in Glass and Wood, 1983), increased heart rate and increased pulmonary blood flow (Burggren et al, 1977). Additionally, a slow erythropoietic response after hypobaric hypoxia has been described in painted turtles (Chrysemys picta) (Meints et al, 1975), increasing the oxygen carrying capacity through an increased hematocrit.…”

Section: Introductionmentioning

confidence: 99%

Respiratory responses to short term hypoxia in the snapping turtle, Chelydra serpentina

Frische¹,

Fago²,

Altimiras³

2000

Comparative Biochemistry and Physiology Part A: Molecular &

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“…This provided authoritative evidence against the widely held perception that pulmonary ventilation of the ectothermic reptiles was erratic and irregular and that reptiles were endowed with a 'sloppy' respiratory control system that allowed for wide swings in blood gases (Glass and Wood, 1983). It also demonstrated that although the almost sevenfold rise in oxygen consumption between 10 and 30 o C was attended by an almost equal rise in ventilation, arterial P CO2 increased with an attendant drop in arterial pH.…”

mentioning

confidence: 89%

“…During their doctoral research, Glass and Boutilier had independently refined methods for simultaneous measurements of tidal volume and breathing frequency and gas exchange in freely moving turtles, snakes and frogs (e.g. Glass and Johansen, 1976;Glass and Wood, 1983;Boutilier and Shelton, 1986). These aquatic airbreathers were allowed to dive in an aquarium, but forced to air-breathe through a funnel containing a plethysmograph (which measured tidal volume and breathing frequency) and a flow-through system that allowed the inspired and expired gas concentrations to be measured.…”

mentioning

confidence: 99%