On the identification of paedomorphic and overwintering larval newts based on cloacal shape: review and guidelines

Current Zoology
Mathieu Denoël

Abstract

Paedomorphosis is an alternative process to metamorphosis in which adults retain larval traits at the adult stage. It is frequent in newts and salamanders, where larvae reach sexual maturity without losing their gills. However, in some populations, larvae overwinter in water, while remaining immature. These alternative ontogenetic processes are of particular interest in various research fields, but have different causes and consequences, as only paedomorphosis allows metamorphosis to be bypassed before maturity. It is thus relevant to efficiently identify paedomorphs versus overwintering larvae. In this context, the aim of this article was 3-fold: firstly, to perform a meta-analysis of the identification procedures carried out in the literature; secondly, to determine the effectiveness of body size to make inferences about adulthood by surveying natural newt populations ofLissotriton helveticusandIchthyosaura alpestris, and thirdly, to propose easy guidelines for an accurate distinction between large larvae and paedomorphs based on an external sexual trait, which is essential for reproduction-the cloaca. More than half of the studies in the literature do not mention the diagnostic criteria used for determining adulthood. The cr...Continue Reading

References

Jan 1, 1997·Brain Research Bulletin·S KikuyamaH Hayashi
May 20, 1998·Proceedings of the National Academy of Sciences of the United States of America·T J Ryan, R D Semlitsch
Dec 26, 2001·The Journal of Experimental Zoology·David M Sever
Oct 14, 2005·Biological Reviews of the Cambridge Philosophical Society·Mathieu DenoëlHoward H Whiteman
Jul 29, 2011·Oecologia·H H WhitemanJ J Gutrich
Nov 5, 2013·The Journal of Animal Ecology·Mathieu Denoël, Gentile F Ficetola
Nov 22, 2014·Molecular Biology and Evolution·Sunita JanssenswillenFranky Bossuyt
Feb 20, 2015·Proceedings. Biological Sciences·Ines Van BocxlaerFranky Bossuyt
Jan 16, 2016·PloS One·Sunita Janssenswillen, Franky Bossuyt

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