Naturwissenschaften

, Volume 93, Issue 3, pp 110–113

Is body size of the water frog Rana esculenta complex responding to climate change?

  • Piotr Tryjanowski
  • Tim Sparks
  • Mariusz Rybacki
  • Leszek Berger
Original Article

Abstract

Recent studies on climate responses in ectothermic (cold-blooded) vertebrates have been few in number and focussed on phenology rather than morphology. According to Bergmann’s rule, endothermic (warm-blooded) vertebrates from cooler climates tend to be larger than congeners from warmer regions. Although amphibians are ectothermic vertebrates, weather and climatic conditions may also impact on their morphology, and thereby affect their survival rates and population dynamics. In this paper, we show, in a unique long-term study during the period 1963–2003 in an agricultural landscape in western Poland, that the body length of two water frog parental species (males of both Rana ridibunda and R. lessonae) increased significantly. However, their hybridogenetic hybrid R. esculenta did not show similar changes. A significant relationship with a large-scale climatic factor, the winter North Atlantic Oscillation index, was found positive for R. ridibunda males and R. lessonae females, and negative for R. esculenta females. Our findings, the first for amphibians, are consistent with other studies reporting that recent climate change has affected the morphology of animals. However, we also show that changes in amphibian phenotype linked to climate may vary independently between (even very similar) species.

References

  1. Abt G, Reyer HU (1993) Mate choice and fitness in a hybrid frog: Rana esculenta females prefer Rana lessonae males over their own. Behav Ecol Sociobiol 32:221–228CrossRefGoogle Scholar
  2. Berger L (1966) Biometrical studies on the population of green frogs from the environs of Poznañ. Ann Zool 23:303–324Google Scholar
  3. Berger L (1973a) Sexual maturity of males within forms of Rana esculenta complex. Zool Pol 22:177–188Google Scholar
  4. Berger L (1973b) Systematics and hybridization in European green frogs of Rana esculenta complex. J Herpetol 7:1–10CrossRefGoogle Scholar
  5. Berger L, Rybacki M (1998) Composition and ecology of water frog populations in agricultural landscape in Wielkopolska (central Poland). Biol Bull Pozn 35:103–111Google Scholar
  6. Biek R, Funk CW, Maxell BA, Mills LS (2002) What is missing in amphibian decline research: insights from ecological sensitivity analysis. Conserv Biol 16:728–734CrossRefGoogle Scholar
  7. Bull CM, Burzacott D (2002) Changes in climate and in the timing of pairing of the Australian lizard, Tiliqua rugosa: a 15-year study. J Zool 256:383–387CrossRefGoogle Scholar
  8. Carey C, Alexander MA (2003) Climate change and amphibian declines: is there a link? Diver Distrib 9:111–121CrossRefGoogle Scholar
  9. Denton JS, Beebee TJC (1993) Density-related features of natterjack toad (Bufo calamita) populations in Britain. J Zool 229:105–119CrossRefGoogle Scholar
  10. Gotthard K (2001) Growth strategies of ectothermic animals in temperate environments. In: Atkinson D, Thorndyke M (eds) Animal developmental ecology. BIOS Scientific Publishers, Oxford, pp 287–304Google Scholar
  11. Grant PR, Grant BR (2002) Unpredictable evolution in a 30-year study of Darwin’s finches. Science 296:707–711PubMedCrossRefGoogle Scholar
  12. Kiesecker JM, Blaustein AR, Belden LK (2001) Complex causes of amphibian population declines. Nature 410:681–684PubMedCrossRefGoogle Scholar
  13. Laugen AT, Laurila A, Jönsson KI, Söderman F, Merilä J (2005) Do common frogs (Rana temporaria) follow Bergmann’s rule? Evol Ecol Res 7:717–731Google Scholar
  14. Lodė T (2001) Character convergence in advertisement call and mate choice in two genetically distinct water frog hybridogenetic lineages (Rana kl. esculenta, Rana kl. grafi). J Zool Syst Evol Res 39:91–97CrossRefGoogle Scholar
  15. Møller AP, Merilä J (2004) Analysis and interpretation of long-term studies investigating responses to climate change. Adv Ecol Res 35:111–130Google Scholar
  16. Negovetic S, Anholt BR, Semelitsch RD, Reyer H-U (2001) Specific responses of sexual and hybridogenetic European waterfrog tadpoles to temperature. Ecology 82:766–774CrossRefGoogle Scholar
  17. Post E, Stenseth NC, Langvatn R, Fromentin J-M (1997) Global climate change and phenotypic variation among red deer cohorts. Proc R Soc Lond B 264:1317–1324CrossRefGoogle Scholar
  18. Rybacki M, Berger L (1994) Distribution and ecology of water frogs in Poland. Zool Pol 39:293–303Google Scholar
  19. Schmidt-Nielsen K (1984) Scaling: why is animal size so important. Cambridge University Press, Cambridge, NYGoogle Scholar
  20. Som C, Anholt BR, Reyer H-U (2000) The effect of assortative mating on the coexistence of a hybridogenetic waterfrog and its sexual host. Am Nat 156:34–46PubMedCrossRefGoogle Scholar
  21. Stenseth NC, Ottersen G, Hurrell JW, Mysterud A, Lima M, Chan, K-S, Yoccoz NG, Adlandsvik B (2003) Studying climate effects on ecology through the use of climate indices: the North Atlantic Oscillation, El Nino Southern Oscillation and beyond. Proc R Soc Lond B 270:2087–2096CrossRefGoogle Scholar
  22. Tryjanowski P, Rybacki M, Sparks T (2003) Changes in the first spawning dates of common frogs and common toads in western Poland in 1978–2002. Ann Zool Fenn 40:459–464Google Scholar
  23. Uzzel T, Günther R, Berger L (1977) Rana ridibunda and Rana esculenta: a leaky hybridogenetic system (Amphibia, Salientia). Proc Acad Nat Sci Philadelphia 128:147–171Google Scholar
  24. Walther G-R, Post E, Convey P, Menzel A, Parmesan C, Beebee TJC, Fromentin J-M, Hoegh-Guldberg O, Bairlein F (2002) Ecological responses to recent climate change. Nature 416:389–395PubMedCrossRefGoogle Scholar
  25. Yom-Tov Y (2001) Global warming and body mass decline in Israeli passerine birds. Proc R Soc Lond B 268:947–952CrossRefGoogle Scholar

Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  • Piotr Tryjanowski
    • 1
  • Tim Sparks
    • 2
  • Mariusz Rybacki
    • 3
  • Leszek Berger
    • 1
  1. 1.Department of Behavioural EcologyAdam Mickiewicz UniversityPoznańPoland
  2. 2.NERC Centre for Ecology and Hydrology, Monks Wood, Abbots RiptonHuntingdonUK
  3. 3.Research Centre for Agricultural and Forest Environment, PASPoznańPoland

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