Lejeune, B., Bissey, L., Didaskalou, E., Sturaro, N., Lepoint, G., & Denoël, M. (2021). Progenesis as an intrinsic factor of ecological opportunity in a polyphenic amphibian. Functional Ecology, 35(2), 546-560.
1. Paedomorphosis, a developmental heterochrony involving the retention of larval traits at the adult stage, is considered a major evolutionary process because it can generate phenotypic variation without ...
Denoël, M., Drapeau, L., & Winandy, L. (2019). Reproductive fitness consequences of progenesis: sex-specific payoffs in safe and risky environments. Journal of Evolutionary Biology, 32(6), 629-637.
Progenesis is considered to have an important role in evolution because it allows the retention of both a larval body size and shape in an adult morphology. However, the cost caused by the adoption of a ...
Denoël, M., Drapeau, L., Oromi Farrús, N., & Winandy, L. (2019). The role of predation risk in metamorphosis versus behavioural avoidance: a sex-specific study in a facultative paedomorphic amphibian. Oecologia, 189(3), 637-645.
Evolutionary theory predicts the evolution of metamorphosis over paedomorphosis (the retention of larval traits at the adult stage) in response to life in unfavourable habitats and to the benefits of dispersal ...
Denoël, M. (2017). On the identification of paedomorphic and overwintering larval newts based on cloacal shape: review and guidelines. Current Zoology, 63(2), 165-173.
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 ...
Mathiron, A., Lena, J.-P., Baouch, S., & Denoël, M. (2017). The ‘male escape hypothesis’: sex-biased metamorphosis in response to climatic drivers in a facultatively paedomorphic amphibian. Proceedings of the Royal Society. Biological Sciences, 284(1853), 20170176.
Paedomorphosis is a major evolutionary process that bypasses metamorphosis and allows reproduction in larvae. In newts and salamanders, it can be facultative with paedomorphs retaining gills and metamorphs ...
Oromi Farrús, N., Michaux, J., & Denoël, M. (2016). High gene flow between alternative morphs and the evolutionary persistence of facultative paedomorphosis. Scientific Reports, 6, 32046.
Paedomorphosis and metamorphosis are two major developmental processes that characterize the evolution of complex life cycles in many lineages. Whereas these processes were fixed in some taxa, they remained ...
Denoël, M., & Winandy, L. (2015). The importance of phenotypic diversity in conservation: Resilience of palmate newt morphotypes after fish removal in Larzac ponds (France). Biological Conservation, 192, 402-408.
Resilience of organisms after threat removal is an essential feature to justify conservation efforts. Amphibians are particularly threatened with a worldwide decline, showing a low resistance to invaders such ...
Winandy, L., Darnet, E., & Denoël, M. (2015). Amphibians forgo aquatic life in response to alien fish introduction. Animal Behaviour, 109, 209-216.
Species with complex life cycles are good models to understand trade-offs between life in hostile and favourable habitats. Newts remain in breeding wetlands for a long period and are strongly affected by fish ...
Winandy, L., & Denoël, M. (2015). The aggressive personality of an introduced fish affects foraging behavior in a polymorphic newt. Behavioral Ecology, 26(6), 1528-1536.
The study of personality has aroused much interest and has provided insight into the understanding of animal behavior. Nevertheless, the study of the ecological consequences of personality is a newer field ...
Denoël, M., & Ficetola, F. (2015). Using kernels and ecological niche modeling to delineate conservation areas in an endangered patch-breeding phenotype. Ecological Applications, 25(7), 1922-1931.
Efficient delineation of conservation areas is a great challenge in maintaining biodiversity. Kernel density estimators (KDEs) are a powerful tool in this perspective, but they have not been applied at the ...
Winandy, L., & Denoël, M. (2015). Expression of sexual ornaments in a polymorphic species: phenotypic variation in response to environmental risk. Journal of Evolutionary Biology, 28(5), 1049-1056.
Secondary sexual traits may evolve under the antagonistic context of sexual and natural selection. In some polymorphic species, these traits are only expressed during the breeding period and are differently ...
Colleoni, E., Denoël, M., Padoa-Schioppa, E., Scali, S., & Ficetola, G. F. (2014). Rensch’s rule and sexual dimorphism in salamanders: patterns and potential processes. Journal of Zoology, 293(3), 143-151.
Body size is influenced by the interaction of multiple forces, whose effects can determine the occurrence of sexual size dimorphism (SSD). Rensch's rule is the increase of SSD with body size in taxa where ...
Denoël, M., & Winandy, L. (2014). Fire salamander (Salamandra salamandra) in Larzac plateau: low occurrence, pond-breeding and cohabitation of larvae with paedomorphic palmate newts (Lissotriton helveticus). Acta Herpetologica, 9(1), 43-49.
Alternative reproductive strategies are widespread in caudate amphibians. Among them, fire salamanders (Salamandra salamandra) usually rely on streams to give birth to aquatic larvae but also use ponds ...
Denoël, M., & Ficetola, G. F. (2014). Heterochrony in a complex world: disentangling environmental processes of facultative paedomorphosis in an amphibian. Journal of Animal Ecology, 83(3), 606-615.
1. Heterochrony, the change in the rate or timing of development between ancestors and their descendants, plays a major role in evolution. When heterochrony produces polymorphisms, it offers the possibility to ...
Drechsler, A., Geller, D., Freund, K., Schmeller, D. S., Künzel, S., Rupp, O., Loyau, A., Denoël, M., Valbuena-Ureña, E., & Steinfartz, S. (2013). What remains from a 454 run: estimation of success rates of microsatellite loci development in selected newt species (Calotriton asper, Lissotriton helveticus, and Triturus cristatus) and comparison with Illumina-based approaches. Ecology and Evolution, 3(11), 3947-3957.
The development of microsatellite loci has become more efficient using next-generation sequencing (NGS) approaches, and many studies imply that the amount of applicable loci is large. However, few studies have ...
Denoël, M. (2012). Newt decline in Western Europe: highlights from relative distribution changes within guilds. Biodiversity and Conservation, 21(11), 2887-2898.
The recent increase in the number of monitoring schemes has formed the basis for high quality distribution atlases. This provides the opportunity of estimating global and specific decline patterns across ...
Galloy, V., & Denoël, M. (2010). Detrimental effect of temperature increase on the fitness of an amphibian (Lissotriton helveticus). Acta Oecologica, 36(2), 179-183.
Increases of global temperatures have resulted in measurable shifts in the distribution, phenology and survival of some plant and animal species. However, the mechanisms showing links between global warming ...
González-Hernández, M., Denoël, M., Duffus, A. J. L., Garner, T. W. J., Cunningham, A. A., & Acevedo-Whitehouse, K. (2010). Dermocystid infection and associated skin lesions in free-living palmate newts (Lissotriton helveticus) from Southern France. Parasitology International, 59(3), 344-350.
Since the early 1900s, mesomycetozoan parasites have been reported in both European anuran and caudate species. These reports have primarily been descriptive, which has made assessing the impact of these ...
Denoël, M., & Ficetola, G. F. (2008). Conservation of newt guilds in an agricultural landscape of Belgium: the importance of aquatic and terrestrial habitats. Aquatic Conservation, 18(5), 714-728.
1. Amphibians are declining worldwide in response to local and global pressures. Pond-breeding species are particularly vulnerable to environmental change because they rely on two components of the landscape ...
Denoël, M. (2007). Priority areas of intraspecific diversity: Larzac, a global hotspot for facultative paedomorphosis in amphibians. Animal Conservation, 10(1), 110-116.
Although the designation of biodiversity hotspots is a valuable tool to improve conservation efforts, this is a concept primarily based on species diversity. In consequence, another component of biodiversity ...
Denoël, M. (2007). Le Triton palmé, Triturus helveticus (Razoumowski, 1789). In J.-P., Jacob, C., Percsy, H., de Wavrin, E., Graitson, T., Kinet, M., Denoël, M., Paquay, N., Percsy, & A., Remacle (Eds.), Amphibiens et Reptiles de Wallonie (pp. 86-95). Namur, Belgique: Aves-Raînne et Centre de Recherche de la Nature, des Forêts et du Bois (MRW - DGRNE).
Denoël, M., & Ficetola, G. F. (2007). Landscape-level thresholds and newt conservation. Ecological Applications, 17(1), 302-309.
Ecological thresholds are defined as points or zones at which a rapid change occurs from one ecological condition to another. The existence of thresholds in species - habitat relationships has important ...
Denoël, M. (2006). Seasonal variation of morph ratio in facultatively paedomorphic populations of the palmate newt Triturus helveticus. Acta Oecologica, 29(2), 165-170.
Facultative paedomorphosis is a polyphenism in which individuals may express one of two alternative ontogenetic pathways (metamorphosis vs. paedomorphosis) depending on environmental cues. Previous laboratory ...
Denoël, M., & Lehmann, A. (2006). Multi-scale effect of landscape processes and habitat quality on newt abundance: Implications for conservation. Biological Conservation, 130(4), 495-504.
Recent studies in population dynamics suggest that landscape processes and habitat quality act at different scales on population abundances, but very few have modelled their simultaneous effects. However, at a ...
Denoël, M. (2005). Habitat partitioning in facultatively paedomorphic populations of palmate newts Triturus helveticus. AMBIO: A Journal of the Human Environment, 34(6), 476-477.
Denoël, M., Džukić, G., & Kalezic, M. L. (2005). Effects of widespread fish introductions on paedomorphic newts in Europe. Conservation Biology, 19(1), 162-170.
As a result of factors such as global warming, habitat destruction, and species introduction, amphibians are declining worldwide. No one, however, has analyzed the status of polymorphic amphibian species at a ...
Denoël, M. (2004). Répartition, habitat et conservation des amphibiens du Pays de Herve. Bulletin de la Société Herpétologique de France, 111-112, 49-77.
The knowledge of distribution and ecological determinants of species is a prerequisite to their conservation at a time where declines are generalized at a world scale. The aim of this study is to characterize ...