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Journal of Comparative Physiology A

, Volume 196, Issue 10, pp 713–727 | Cite as

Pheromonal communication in amphibians

  • Sarah K. WoodleyEmail author
Review

Abstract

Pheromonal communication is widespread in salamanders and newts and may also be important in some frogs and toads. Several amphibian pheromones have been behaviorally, biochemically and molecularly identified. These pheromones are typically peptides or proteins. Study of pheromone evolution in plethodontid salamanders has revealed that courtship pheromones have been subject to continual evolutionary change, perhaps as a result of co-evolution between the pheromonal ligand and its receptor. Pheromones are detected by the vomeronasal organ and main olfactory epithelium. Chemosensory neurons express vomeronasal receptors or olfactory receptors. Frogs have relatively large numbers of vomeronasal receptors that are transcribed in both the vomeronasal organ and the main olfactory epithelium. Salamander vomeronasal receptors apparently are restricted to the vomeronasal organ. To date, no chemosensory ligands have been matched to vomeronasal receptors or olfactory receptors so it is unknown whether particular receptor types are (1) specialized for detection of pheromones versus other chemosignals, or (2) specialized for detection of volatile, nonvolatile, or water-borne chemosignals. Despite progress in understanding amphibian pheromonal communication, only a small fraction of amphibian species have been examined. Study of additional species of amphibians will indicate which traits related to pheromonal communication are evolutionarily conserved and which traits have diverged over time.

Keywords

Amphibian Pheromone Vomeronasal receptor Olfactory Courtship 

Abbreviations

VNO

Vomeronasal organ

MOE

Main olfactory epithelium

VR

Vomeronasal receptor

OR

Olfactory receptor

PRF

Plethodontid receptivity factor

PMF

Plethodontid modulating factor

SPF

Sodefrin precursor-like factor

TAAR

Trace amine-associated receptor

Notes

Acknowledgments

I thank Drs Michael J. Baum, Lynne D. Houck, Karen Kiemnec-Tyburczy, and two anonymous reviewers for comments on earlier drafts. I thank Duquesne University Bayer School of Natural and Environmental Sciences for support.

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© Springer-Verlag 2010

Authors and Affiliations

  1. 1.Department of Biological SciencesDuquesne UniversityPittsburghUSA

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