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Fluctuating asymmetry in Ichthyophonus-sp. infected newts, Notophthalmus viridescens, from Vermont

Fluctuating asymmetry in Ichthyophonus-sp. infected newts, Notophthalmus viridescens, from Vermont Applied Herpetology 6 (2009) 369–378 www.brill.nl/ah Fluctuating asymmetry in Ichthyophonus -sp. infected newts, Notophthalmus viridescens , from Vermont Elizabeth Sherman 1 , Kaylee Tock and Casey Clarke Natural Sciences and Mathematics, Bennington College, Bennington, VT 05201, USA 1 Corresponding author; e-mail: Sherman@bennington.edu Abstract Measures of fluctuating asymmetry (FA) have been used to assess the significance of stress in amphibian populations. When animals with bilateral body plans are challenged by environmental stressors, departures from bilateral symmetry can emerge during development. The tendency for FA to develop has been linked to greater susceptibility to pathogens in many organisms. In our study, newts ( Notophthalmus viridescens ) infected with Ichthyophonus -sp. exhibited greater size-corrected FA of the hind limbs than uninfected ani- mals from the same population. Among infected animals, however, the intensity of infection and the extent of hind limb asymmetry were not correlated, suggesting that asymmetry did not arise following infection, but rather that newts having greater FA may have been more susceptible to infection as a result of the same stresses that produced the increase in FA. There was no relationship between dorsal spot pattern FA and infection status or hind limb FA. We suggest that spot pattern http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Applied Herpetology Brill

Fluctuating asymmetry in Ichthyophonus-sp. infected newts, Notophthalmus viridescens, from Vermont

Clarke, Casey; Tock, Kaylee; Sherman, Elizabeth
Applied Herpetology , Volume 6 (4): 369 – Jan 1, 2009
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Publisher
Brill
Copyright
© 2009 Koninklijke Brill NV, Leiden, The Netherlands
ISSN
1570-7539
eISSN
1570-7547
DOI
10.1163/157075309X12523217711605
Publisher site
See Article on Publisher Site

Abstract

Applied Herpetology 6 (2009) 369–378 www.brill.nl/ah Fluctuating asymmetry in Ichthyophonus -sp. infected newts, Notophthalmus viridescens , from Vermont Elizabeth Sherman 1 , Kaylee Tock and Casey Clarke Natural Sciences and Mathematics, Bennington College, Bennington, VT 05201, USA 1 Corresponding author; e-mail: Sherman@bennington.edu Abstract Measures of fluctuating asymmetry (FA) have been used to assess the significance of stress in amphibian populations. When animals with bilateral body plans are challenged by environmental stressors, departures from bilateral symmetry can emerge during development. The tendency for FA to develop has been linked to greater susceptibility to pathogens in many organisms. In our study, newts ( Notophthalmus viridescens ) infected with Ichthyophonus -sp. exhibited greater size-corrected FA of the hind limbs than uninfected ani- mals from the same population. Among infected animals, however, the intensity of infection and the extent of hind limb asymmetry were not correlated, suggesting that asymmetry did not arise following infection, but rather that newts having greater FA may have been more susceptible to infection as a result of the same stresses that produced the increase in FA. There was no relationship between dorsal spot pattern FA and infection status or hind limb FA. We suggest that spot pattern

Journal

Applied Herpetology – Brill

Published: Jan 1, 2009

Keywords: FLUCTUATING ASYMMETRY; PATHOGEN; INFECTION; AMPHIBIAN CONSERVATION; NEWTS; ICHTHYOPHONUS-SP

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