Journal of comparative physiology

, Volume 128, Issue 2, pp 101–107 | Cite as

Behavioral and physiological correlates of recovery from exhaustion in the lungless salamanderBatrachoseps attenuatus (Amphibia: Plethodontidae)

  • Martin E. Feder
  • Luellen E. Olsen


  1. 1.

    Slender salamanders,Batrachoseps attenuatus, underwent forced swimming until exhausted. Lactate elimination, rate of oxygen consumption (\(\dot V_{O_2 }\)), and recovery from fatique were measured following exhaustion.

  2. 2.

    Ambient oxygen partial pressure (\(P_{O_2 }\)) during the recovery period (in air) affected recovery from fatigue,\(\dot V_{O_2 }\), and lactate elimination (Fig. 1-3; Table 1). Recovery from fatigue at 1 h after exhaustion was positively correlated with\(P_{O_2 }\).

  3. 3.

    At 75 and 157 Torr\(P_{O_2 }\), more than 50% of recovery from fatigue occurred in the first 0.5 h after exhaustion (Fig. 4). Recovery from fatigue preceded lactate elimination during this period. All remaining recovery from fatigue required 4.5 additional hours, and occurred synchronously with lactate elimination. Recovery from fatigue was most rapid when\(\dot V_{O_2 }\) was highest.

  4. 4.

    Salamanders restimulated to activity after 0.5 h recovery produced no additional lactate (Table 2). Salamanders were active at whole-body lactate concentrations previously associated with exhaustion. Selective elimination of lactate from locomotor musculature did not occur (Table 2).

  5. 5.

    Oxygen debt functions in both recovery from fatigue and lactate elimination inBatrachoseps. Lactate concentration alone is an inadequate explanation for fatigue and recovery in all amphibians.



Oxygen Fatigue Lactate Partial Pressure Oxygen Consumption 
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Copyright information

© Springer-Verlag 1978

Authors and Affiliations

  • Martin E. Feder
    • 1
    • 2
  • Luellen E. Olsen
    • 1
    • 2
  1. 1.Department of AnatomyUniversity of ChicagoChicagoUSA
  2. 2.Departments of Zoology and BiologyUniversity of CaliforniaBerkeleyUSA

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