Biogeographic variations in wood mice: testing for the role of morphological variation as a line of least resistance to evolution

Renaud, Sabrina; Quéré, Jean-Pierre; Michaux, Johan

doi:10.1017/cbo9781107360150.012

Cited by 5 publications

(4 citation statements)

References 62 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In nowadays European landscapes, harder plants may rather occur in Mediterranean areas, for instance due to adaptations to summer drought. Accordingly, broader molars have been documented in wood mice towards southern parts of Europe Renaud et al 2015b). Broader molars in bank voles from warm Mediterranean areas fit this pattern, further supporting the adaptive role of this morphological signature.…”

Section: Morphological Convergence In Mediterranean Bank Volessupporting

confidence: 54%

Bank Voles in Southern Eurasia: Vicariance and Adaptation

Ledevin¹,

Chevret²,

Helvaci³

et al. 2016

J Mammal Evol

Self Cite

View full text Add to dashboard Cite

Your article is protected by copyright and all rights are held exclusively by Springer Science +Business Media New York. This e-offprint is for personal use only and shall not be selfarchived in electronic repositories. If you wish to self-archive your article, please use the accepted manuscript version for posting on your own website. You may further deposit the accepted manuscript version in any repository, provided it is only made publicly available 12 months after official publication or later and provided acknowledgement is given to the original source of publication and a link is inserted to the published article on Springer's website. The link must be accompanied by the following text: "The final publication is available at link.springer.com".Abstract Phylogeographic lineages are interpreted as the product of repeated isolation in glacial refugia, leading to vicariant differentiation. Being restricted to a given geographic area could also promote adaptive divergence in response to local conditions. The role of phylogeny and climate in the evolution of the bank vole (Myodes glareolus) was investigated here, focusing on molar tooth shape, a morphological feature related to the exploitation of food resources. A balanced role of phylogeny and climate was demonstrated. Response to environmental factors led to morphological convergence of bank voles from different lineages living in similar environments, and to within-lineage divergence in extreme environments. An important interaction of climate and phylogeny was found, suggesting that each lineage is living in a particular environment. This lineage-specific adaptation to a range of environmental conditions may have conditioned the potential of post-glacial recolonization of each lineage. Morphological covariation with environmental conditions further highlights the potential of adaptation of this species.

show abstract

Section: Morphological Convergence In Mediterranean Bank Volessupporting

confidence: 54%

Bank Voles in Southern Eurasia: Vicariance and Adaptation

Ledevin¹,

Chevret²,

Helvaci³

et al. 2016

J Mammal Evol

Self Cite

View full text Add to dashboard Cite

show abstract

“…Specimens from different Mediterranean and Atlantic islands were further included: Oleron (15), Ré (7) and Yeu (1) in the Atlantic Ocean off Western France; Corsica (8), Elba (1), Ibiza (9), Sicily (15) and Marettimo (1) in the Western Mediterranean Sea. This sampling was completed by animals integrated in a study devoted to patterns of within-population variation of the first upper molar (Renaud et al 2015). It included specimens from continental Italy (3) and France Deep learning for species identification of modern and fossil rodent molars -6 (205), as well as from the islands of Noirmoutier (5), Porquerolles (86) and Port-Cros (12), and Sardinia (13).…”

Section: Methodsmentioning

confidence: 99%

“…They thus provide a case study of close but recognizable morphologies to test the relative performance between GMM and deep learning approaches. Furthermore, previous studies on these species (Renaud et al 2020;Renaud et al 2017;Renaud and Michaux 2003;Renaud et al 2015) made available a high number of pictures to feed the deep learning approach with well-identified modern specimens. The test focused on the first upper molar (UM1) which bears most of the phylogenetically relevant characters in murine rodents (J.…”

Section: Case Study: Identification Of Three Rodent Species Based On mentioning

confidence: 99%

Deep learning for species identification of modern and fossil rodent molars

Miele

Dussert

Cucchi

et al. 2020

Preprint

Self Cite

View full text Add to dashboard Cite

Reliable identification of species is a key step to assess biodiversity. In fossil and archaeological contexts, genetic identifications remain often difficult or even impossible and morphological criteria are the only window on past biodiversity. Methods of numerical taxonomy based on geometric morphometric provide reliable identifications at the specific and even intraspecific levels, but they remain relatively time consuming and require expertise on the group under study. Here, we explore an alternative based on computer vision and machine learning. The identification of three rodent species based on pictures of their molar tooth row constituted the case study. We focused on the first upper molar in order to transfer the model elaborated on modern, genetically identified specimens to isolated fossil teeth. A pipeline based on deep neural network automatically cropped the first molar from the pictures, and returned a prediction regarding species identification. The deep-learning approach performed equally good as geometric morphometrics and, provided an extensive reference dataset including fossil teeth, it was able to successfully identify teeth from an archaeological deposit that was not included in the training dataset. This is a proof-of-concept that such methods could allow fast and reliable identification of extensive amounts of fossil remains, often left unstudied in archaeological deposits for lack of time and expertise. Deep-learning methods may thus allow new insights on the biodiversity dynamics across the last 10.000 years, including the role of humans in extinction or recent evolution.

show abstract

“…However, other results suggest that phenotypic differentiation may not scale concordantly with genetic distance. Researchers observed lower than expected levels of dental morphological differentiation between weakly genetically differentiated populations in some species distributed widely across a continent (Helvaci et al 2012;Renaud et al 2015;Ledevin et al 2018). In the case of bank voles (Myodes glareolus), patterns of morphological similarity in molar teeth between genetically differentiated groups were characterized as convergence between different populations.…”

mentioning

confidence: 96%

Microevolutionary variation in molar morphology ofOnychomys leucogasterdecoupled from genetic structure

2022

View full text Add to dashboard Cite

In neutral models of quantitative trait evolution, both genetic and phenotypic divergence scale as random walks, producing a correlation between the two measures. However, complexity in the genotype‐phenotype map may alter the correlation between genotypic and phenotypic divergence, even when both are evolving neutrally or nearly so. Understanding this correlation between phenotypic and genetic variation is critical for accurately interpreting the fossil record. This study compares the geographic structure and scaling of morphological variation of the shape of the first lower molar of 77 individuals of the northern grasshopper mouse Onychomys leucogaster to genome‐wide SNP variation in the same sample. We found strong genetic structure but weak or absent morphological structure indicating that the scaling of each type of variation is decoupled from one another. Low PST values relative to FST values are consistent with a lack of morphological divergence in contrast to genetic divergence between groups. This lack of phenotypic structure and the presence of notable within‐sample phenotypic variance are consistent with uniform selection or constraints on molar shape across a wide geographic and environmental range. Over time, this kind of decoupling may result in patterns of phenotypic stasis masking underlying genetic patterns.

show abstract

Biogeographic variations in wood mice: testing for the role of morphological variation as a line of least resistance to evolution

Cited by 5 publications

References 62 publications

Bank Voles in Southern Eurasia: Vicariance and Adaptation

Bank Voles in Southern Eurasia: Vicariance and Adaptation

Deep learning for species identification of modern and fossil rodent molars

Microevolutionary variation in molar morphology ofOnychomys leucogasterdecoupled from genetic structure

Contact Info

Product

Resources

About