Schabetsberger, R., Grapci-Kotori, L., Ibrahimi, H., Bilalli, A., Levkov, Z., Jersabek, C. D., Vorage, M., Denoël, M., Kaiser, R., Pall, K., Eisendle, U., Eder, E., & Sadiku, A. (2021). First limnological characterization of Lakes Leqinat and Drelaj in Bjeshkët e Nemuna National Park, Kosovo. Eco.mont, 13(1), 12-21.
The Balkan Peninsula is a biodiversity hotspot and hosts numerous mountain lakes, which offer a refuge for a multitude of species. However, previous pristine habitats have been deeply affected by anthropogenic ...
Denoël, M., Ficetola, G. F., Sillero, N., Dzukic, G., Kalezic, M. L., Vukov, T., Muhovic, I., Ikovic, V., & Lejeune, B. (2019). Traditionally managed landscapes do not prevent amphibian decline and the extinction of paedomorphosis. Ecological Monographs, 89(2).
Eco-cultural landscapes are assumed to be favourable environments for the persistence of biodiversity, but global change may affect differently their terrestrial and aquatic components. Yet, few long-term ...
Lejeune, B., Sturaro, N., Lepoint, G., & Denoël, M. (2018). Facultative paedomorphosis as a mechanism promoting intraspecific niche differentiation. Oikos, 127(3), 427-439.
Organisms with complex life cycles are characterized by a metamorphosis that allows for a major habitat shift and the exploitation of alternative resources. However, metamorphosis can be bypassed in some ...
Tomašević, N., Cvijanović, M., Denoël, M., & Ivanović, A. (2017). Morphological integration and alternative life history strategies: a case study in a facultatively paedomorphic newt. Journal of Experimental Zoology. Part B, Molecular and Developmental Evolution, 328(8), 737-748.
Tetrapod limbs are serially homologous structures that represent a particularly interesting model for studies on morphological integration, i.e. the tendency of developmental systems to produce correlated ...
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 ...
Winandy, L., Legrand, P., & Denoël, M. (2017). Habitat selection and reproduction of newts in networks of fish and fishless aquatic patches. Animal Behaviour, 123, 107-115.
The spatial distribution of organisms in patchy environments can be determined by the relationship between habitat quality and animal behaviour. In species with complex life cycles, such as pond-breeding ...
Arntzen, J. W., King, T. M., Denoël, M., Martínez-Solano, I., & Wallis, G. P. (2016). Provenance of Ichthyosaura alpestris (Caudata: Salamandridae) introductions to France and New Zealand assessed by mitochondrial DNA analysis. Herpetological Journal, 26(1), 49-56.
The last century has seen an unparalleled movement of species around the planet as a direct result of human activity, which has been a major contributor to the biodiversity crisis. Amphibians represent a ...
Denoël, M., Scime, P., & Zambelli, N. (2016). Newt life after fish introduction: extirpation of paedomorphosis in a mountain fish lake and newt use of satellite pools. Current Zoology, 62(1), 61-69.
Fish introduction is one of the main causes of amphibian decline worldwide. It affects particularly rare aquatic phenotypes such as paedomorphs, which retain gills during the adult stage. In this context, we ...
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 ...
Ivanović, A., Cvijanović, M., Denoël, M., Slijepčević, M., & Kalezić, M. L. (2014). Facultative paedomorphosis and the pattern of intra- and interspecific variation in cranial skeleton: lessons from European newts (Ichthyosaura alpestris and Lissotriton vulgaris). Zoomorphology, 133(1), 99-109.
Paedomorphosis, the presence of ancestral larval and juvenile traits that occur at the descendent adult stage, is an evolutionary phenomenon that shaped morphological evolution in many vertebrate lineages ...
Winandy, L., & Denoël, M. (2013). Introduced goldfish affect amphibians through inhibition of sexual behaviour in risky habitats: an experimental approach. PLoS ONE, 8(11), 82736.
The introduction of alien species is one of the major causes of current and global biodiversity loss. The introduction of fish can be a particular threat to native amphibian populations, which are declining ...
Winandy, L., & Denoël, M. (2013). Cues from introduced fish alter shelter use and feeding behaviour in adult alpine newts. Ethology, 119(2), 121-129.
Amphibians are particularly affected by alien fish introductions and are declining worldwide. However, the behavioural mechanisms behind the observed cases of coexistence and exclusion patterns between adult ...
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 ...
Kopecky, O., Vojar, J., & Denoël, M. (2011). Sex-specific effect of pool desiccation on the movement of Alpine newts, Mesotriton alpestris (Laurenti, 1768), among breeding sites (Caudata: Salamandridae). Herpetozoa, 24(3/4), 127-134.
In unpredictable habitats, it is advantageous to amphibians to reduce the risk of weather-induced offspring mortality by utilization of several reproductive patches. In european deciduous forest landscapes ...
Winandy, L., & Denoël, M. (2011). The use of visual and automatized behavioral markers to assess methodologies: a study case on PIT-tagging in the Alpine newt. Behavior Research Methods, 43(2), 568-576.
Biomarkers are now widely used as tools in various research fields to assess individual integrity. The recent advances in quantification methods of behavioral patterns, such as computerized video-tracking ...
Denoël, M., & Doellen, J. (2010). Displaying in the dark: light-dependent alternative mating tactics in the Alpine newt. Behavioral Ecology and Sociobiology, 64(7), 1171-1175.
Environment plays a major role for determining the kind of courtship behaviours or alternative mating tactics employed, but the effect of physical variables on fitness has received little attention. The Alpine ...
Kopecky, O., Vojar, J., & Denoël, M. (2010). Movements of Alpine newts (Mesotriton alpestris) between small aquatic habitats (ruts) during the breeding season. Amphibia-Reptilia, 31(1), 109-116.
Many species with complex life cycles, such as caudate amphibians, migrate from terrestrial to aquatic habitats for reproduction. However, movements between reproductive ponds within a breeding season have ...
Denoël, M., Ficetola, G. F., Cirovic, R., Radovic, D., Dzukic, G., Kalezic, M. L., & Vukov, T. D. (2009). A multi-scale approach to facultative paedomorphosis of European newts (Salamandridae) in the Montenegrin karst: Distribution pattern, environmental variables, and conservation. Biological Conservation, 142(3), 509-517.
Facultative paedomorphosis, a process in which newt larvae can opt for reproduction before or after metamorphosis, is geographically heterogeneous. Despite numerous ecological studies and recent evidence of ...
Denoël, M., & Demars, B. (2008). The benefits of heterospecific oophagy in a top predator. Acta Oecologica, 34(1), 74-79.
Oophagy is a behavioural pattern that has been found in a large variety of predator species in the animal kingdom. In contrast to other modes of feeding, it is peculiar in that it involves the detection ...
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., Lena, J.-P., & Joly, P. (2007). Morph switching in a dimorphic population of Triturus alpestris (Amphibia, Caudata). Evolutionary Ecology, 21(3), 325-335.
The usual life cycle of Alpine newts comprises an aquatic larval stage and a terrestrial juvenile and adult stage. However, some populations differ from this pattern in exhibiting facultative paedomorphosis ...
Denoël, M. (2005). Persistence and dispersion of an introduced population of Alpine Newt (Triturus alpestris) in the limestone plateau of Larzac (Southern France). Revue d'Ecologie, 60(2), 139-148.
Persistence and dispersion of an introduced population of Alpine Newt (Triturus alpestris) in the limestone plateau of Larzoc (southern France). - The study of introduced populations is interesting to better ...
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., Hector, M.-P., & Poncin, P. (2005). Courtship behavior in the Alpine newt Triturus alpestris at two different densities of males. Herpetologica, 61(4), 373-379.
The aim of this laboratory experiment was to examine courtship behavior and reproductive success under two different perceived male densities ill the Alpine newt (Triturus alpestris). Male behavioral patterns ...
Denoël, M., Mathieu, M., & Poncin, P. (2005). Effect of water temperature on the courtship behavior of the Alpine newt Triturus alpestris. Behavioral Ecology and Sociobiology, 58(2), 121-127.
Temperature is expected to have an effect on the behavioral patterns of all organisms, especially ectotherms. However, although several studies focused on the effect of temperature on acoustic displays in both ...
Denoël, M. (2004). Distribution and characteristics of aquatic habitats of newts and yellow-bellied toads in the district of Ioannina (Epirus, Greece). Herpetozoa, 17(1/2), 49-64.
The study describes the aquatic habitats and distribution of Triturus alpestris veluchiensis Wolterstorff 1935, T. carnifex macedonicus (Karaman, 1922), T. vulgaris graecus (Wolterstorff, 1905) and Bombina ...
Denoël, M. (2004). Feeding performance in heterochronic alpine newts is consistent with trophic niche and maintenance of polymorphism. Ethology, 110(2), 127-136.
The feeding performances of two heterochronic morphs of the Alpine newt Triturus alpestris were investigated in laboratory experiments. Although both morphs are able to feed in the aquatic habitat, the ...
Denoël, M. (2004). Terrestrial versus aquatic foraging in juvenile Alpine newts (Triturus alpestris). Écoscience, 11(4), 404-409.
Many species of newts and salamanders forage in both terrestrial and aquatic environments during their life. However, the relative benefits of the two foraging patterns remain unknown because all previous ...
Denoël, M., Schabetsberger, R., & Joly, P. (2004). Trophic specialisations in alternative heterochronic morphs. Naturwissenschaften (Die), 91(2), 81-84.
Polymorphisms are suspected of reducing competition among conspecifics in heterogeneous environments by allowing differential resource use. However the adaptive significance of alternative morphs has been ...
Denoël, M. (2003). How do paedomorphic newts cope with lake drying? Ecography, 26(4), 405-410.
Paedomorphosis, in which adult individuals retain larval traits, is widespread in newts and salamanders. Most evolutionary models predict the maintenance of this life-history trait in favourable aquatic ...
Denoël, M. (2003). Avantages sélectifs d'un phénotype hétérochronique. Eco-éthologie des populations pédomorphiques du Triton alpestre, Triturus alpestris (Amphibia, Caudata). Liège, Belgique: Cahiers d'Ethologie.
Facultative paedomorphosis is a polyphenism that has important evolutionary implications in promoting morphological differentiation and habitat use variation, and has occurred in several urodele species ...
Denoël, M. (2003). Effect of rival males on the courtship of paedomorphic and metamorphic Triturus alpestris (Amphibia : Salamandridae). Copeia, 2003(3), 618-623.
Current theories on the alternative mating tactics suppose that individuals may opt for particular behavioral patterns depending of their morphological status. Facultative paedomorphosis in newts and ...
Denoël, M., & Andreone, F. (2003). Trophic habits and aquatic microhabitat use in gilled immature, paedomorphic and metamorphic Alpine newts (Triturus alpestris apuanus) in a pond in central Italy. Belgian Journal of Zoology, 133(2), 95-102.
Current evolutionary models suggest that the presence of heterogeneous habitats favours the evolution of polymorphisms. In such cases, alternative phenotypes can coexist because they use different resources ...
Denoël, M., & Schabetsberger, R. (2003). Resource partitioning in two heterochronic populations of Greek Alpine newts, Triturus alpestris veluchiensis. Acta Oecologica, 24(1), 55-64.
Current ecological models suggest that the maintenance of trophic polymorphisms is favoured by a different resource use in alternative morphs. Facultative paedomorphosis in newts is an example of phenotypic ...
Denoël, M. (2002). Paedomorphosis in the Alpine newt (Triturus alpestris): decoupling behavioural and morphological change. Behavioral Ecology and Sociobiology, 52(5), 394-399.
Paedomorphosis is a heterochronic pattern leading to morphological change, i.e. retention of larval characters in the adult phenotype. The aim of this study was to find out whether behaviour and morphology are ...
Denoël, M., Hervant, F., Schabetsberger, R., & Joly, P. (2002). Short- and long-term advantages of an alternative ontogenetic pathway. Biological Journal of the Linnean Society, 77(1), 105-112.
We documented hypotheses on the evolution of developmental heterochronies by estimating short- and long-term advantages of alternative morphs. In this respect, we compared food energy intakes and body ...
Denoël, M., & Poncin, P. (2001). The effect of food on growth and metamorphosis of paedomorphs in Triturus alpestris apuanus. Archiv für Hydrobiologie, 152(4), 661-670.
The effect of food level on growth and metamorphosis of paedomorphs was examined in an experimental replicated design in Triturus alpestris apuanus. Paedomorphosis concerns the retention of larval ...
Denoël, M., Duguet, R., Džukić, G., Kalezic, M., & Mazzotti, S. (2001). Biogeography and ecology of paedomorphosis in Triturus alpestris (Amphibia, Caudata). Journal of Biogeography, 28(10), 1271-1280.
Aim Paedomorphosis is an evolutionary change in which larval structures are retained in adult animals. In newts and salamanders, this heterochronic process is widely represented and concerns the retention of ...
Denoël, M., & Joly, P. (2001). Adaptive significance of facultative paedomorphosis in Triturus alpestris (Amphibia, Caudata): resource partitioning in an alpine lake. Freshwater Biology, 46(10), 1387-1396.
1. Facultative paedomorphosis is a polymorphism that has important evolutionary implications in promoting morphological differentiation and variation in habitat use. It occurs in several urodele species ...
Denoël, M., & Joly, P. (2001). Size-related predation reduces intramorph competition in paedomorphic Alpine newts. Canadian Journal of Zoology, 79(6), 943-948.
Evolutionary theory assumes that facultative paedomorphosis in newts and salamanders is adaptive in allowing either a younger age at maturity or resource partitioning between the heterochronic morphs. In newt ...
Denoël, M., Poncin, P., & Ruwet, J.-C. (2001). Sexual compatibility between two heterochronic morphs in the Alpine newt, Triturus alpestris. Animal Behaviour, 62(3), 559-566.
Paedomorphosis, in which individuals retain ancestral characteristics in the adult stage, is widespread in newts and salamanders and is suspected to play an important role in evolution. In some species ...
Denoël, M., & Joly, P. (2000). Neoteny and progenesis as two heterochronic processes involved in paedomorphosis in Triturus alpestris (Amphibia: Caudata). Proceedings of the Royal Society. Biological Sciences, 267(1451), 1481-1485.
Current theories on the evolution of paedomorphosis suppose that several ontogenetic pathways have appeared according to different selective pressures. The aim of this study was to find out whether two ...
Denoël, M. (1998). The modulation of movement as a behavioral adaptation to extreme environments in the newt Triturus alpestris cyreni. Journal of Herpetology, 32, 623-625.
Denoël, M. (1997). Un cas de néoténie dans un bâtiment désaffecté, chez le Triton alpestre, Triturus alpestris apuanus (Salamandridae). Alytes, 15, 99-103.
A population of Triturus alpestris apuanus of the Apuane Alps (Tuscany , Italy) was studied during July 1994. The particularity of this population is that it breeds in an artificial site, in the dark and under ...
Denoël, M. (1996). Etude comparée du comportement de cour de Triturus alpestris alpestris (Laurenti, 1768) et Triturus alpestris cyreni (Wolterstorff, 1932) : approche évolutive. Liège, Belgique: Cahiers d'Ethologie.
The species concept in the animal world is very abstract. With diverse methods scientists try to place boundaries between species. But this is generally theoretical. Indeed species are in continuous evolution ...