Journal ArticleDOI
Colour pattern variation in populations of the European Whip snake, Hierophis viridiflavus: does geography explain everything?
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TLDR
Different color patterns in European Whip snake, range from normal ("viridiflavus" pattern), to abundistic (dark pattern) to melanic-melanotic (black) patterns as discussed by the authors.Abstract:
Different colour patterns in European Whip snake, range from normal ("viridiflavus" pattern), to abundistic (dark pattern), to melanic-melanotic (black) patterns. Sexes are highly dimorphic, with more abundistic and melanotic-melanic males, than females. Colour patterns are also distributed in well defined areas of the species' distribution range. Normal colour is distributed in N Europe, N, NW and C Italy, while abundistic snakes are typical of Corsica and Sardinia, and melanic-melanotic snakes are very common or exclusive of NE, S Italy and Sicily. Proximal causes that may have driven the distribution of present colour patterns are linked to palaeogeographic events, even if fossil reconstruction of past colonization or a suitable phylogeographic hypothesis are not available.read more
Citations
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Journal ArticleDOI
Phylogeography of the European Whip Snake, Hierophis viridiflavus (Colubridae), using mtDNA and nuclear DNA sequences
Stefano Scali,Catarina Rato,Miguel A. Carretero,Augusto Gentilli,Marco A. L. Zuffi,Edoardo Razzetti,Sara Fornasiero,Harris,Claudia Corti +8 more
TL;DR: The limited genetic differentiation of island populations from the western continental lineage, indicates that these populations are a result of a recent colonization in accordance with recent described phylogeographic patterns.
Journal ArticleDOI
Who are you? The genetic identity of some insular populations of Hierophis viridiflavus s.l. from the Tyrrhenian Sea
TL;DR: The authors hypothesise about times and modes of colonization and discuss the faunistic value of the obtained results, following the recent proposal to consider the two clades as two different species.
Journal ArticleDOI
Sources of intraspecific morphological variation in Vipera seoanei: allometry, sex, and colour phenotype
TL;DR: This study used linear biometry and geometric morphometrics to investigate intraspecific morphological variation related to allometry and sexual dimorphism in Vipera seoanei, a species that exhibits five colour morphotypes, potentially subjected to distinct ecological pressures.
Journal ArticleDOI
Melanism, body size, and sex ratio in snakes—new data on the grass snake (Natrix natrix) and synthesis
TL;DR: The data indicate that the consequences of melanism may be related to the reproductive mode of species, and in viviparous species, melanism tends to improve growth and/or body size and is more frequent in females, whereas the opposite holds for oviparious snakes.
Journal ArticleDOI
The scent of the others: chemical recognition in two distinct populations of the European whip snake, Hierophis viridiflavus
TL;DR: The results revealed that both insular and mainland males can utilise both homotypic and heterotypic chemical cues, and support the idea that isolated populations may evolve differences in communication systems.
References
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Journal ArticleDOI
Thermal melanism in ectotherms
TL;DR: A synthesis of the thermal melanism hypothesis which states that dark individuals are at an advantage under conditions of low temperature since they heat up faster than light individuals at a given level of solar radiation is provided.
Journal ArticleDOI
Adaptive reptile color variation and the evolution of the mc1r gene
TL;DR: Comparative data on a nuclear gene in reptiles is provided and the utility of a candidate‐gene approach for understanding the evolution of genes involved in vertebrate adaptation is highlighted.
Journal ArticleDOI
Testing alternative vicariance scenarios in Western Mediterranean discoglossid frogs
TL;DR: This work assessed the plausibility of several previously published biogeographic hypotheses, using the frog genera Alytes, Discoglossus, and Bombina as model groups and tested several calibrations of a molecular clock, which resulted in competing temporal settings for the evolution of taxa.
Journal ArticleDOI
Intraspecific habitat partitioning by the sea snake Emydocephalus annulatus (Serpentes, Hydrophiidae): the effects of sex, body size, and colour pattern
TL;DR: Habitat use in this population of sea snakes in New Caledonia is affected by a snake's body size and sex, but not by colour, and the effects of colour morph on operative temperatures of physical models disappeared under water.
Journal Article
Reproductive strategies in alpine adders, Vipera berus. The black females bear more often
Massimo Capula,Luca Luiselli +1 more
TL;DR: En nous fondant sur une etude de 5 ans par marquage-recapture sur une population of viperes polymorphes dans les Alpes, nous avons demontre that dans cette population les femelles noires sont capables de se reproduire significativement plus souvent que les Femelles cryptiques.
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