Naturwissenschaften

, Volume 94, Issue 12, pp 991–996

Survival in an extreme habitat: the roles of behaviour and energy limitation

  • Martin Plath
  • Michael Tobler
  • Rüdiger Riesch
  • Francisco J. García de León
  • Olav Giere
  • Ingo Schlupp
Original Paper

Abstract

Extreme habitats challenge animals with highly adverse conditions, like extreme temperatures or toxic substances. In this paper, we report of a fish (Poecilia mexicana) inhabiting a limestone cave in Mexico. Several springs inside the cave are rich in toxic H2S. We demonstrate that a behavioural adaptation, aquatic surface respiration (ASR), allows for the survival of P. mexicana in this extreme, sulphidic habitat. Without the possibility to perform ASR, the survival rate of P. mexicana was low even at comparatively low H2S concentrations. Furthermore, we show that food limitation affects the survival of P. mexicana pointing to energetically costly physiological adaptations to detoxify H2S.

Keywords

Aquatic surface respiration Cave fish Extremophile Hypoxia Hydrogen sulphide 

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Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  • Martin Plath
    • 1
    • 2
    • 5
  • Michael Tobler
    • 3
    • 5
  • Rüdiger Riesch
    • 2
    • 5
  • Francisco J. García de León
    • 4
  • Olav Giere
    • 2
  • Ingo Schlupp
    • 2
    • 3
    • 5
  1. 1.Unit of Evolutionary Biology and Systematic Zoology, Institute of Biochemistry and BiologyUniversity of PotsdamPotsdamGermany
  2. 2.University of Hamburg, Biozentrum GrindelHamburgGermany
  3. 3.Universität Zürich, Zoologisches InstitutZürichSwitzerland
  4. 4.Centro de Investigaciones Biológicas del NoroesteBaja California SurMéxico
  5. 5.Department of ZoologyUniversity of OklahomaNormanUSA

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