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Renaud S, Amar L, Chevret P, Romestaing C, Quéré JP, Régis C, Lebrun R. Inner ear morphology in wild versus laboratory house mice. J Anat 2024; 244:722-738. [PMID: 38214368 PMCID: PMC11021637 DOI: 10.1111/joa.13998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 12/08/2023] [Accepted: 12/08/2023] [Indexed: 01/13/2024] Open
Abstract
The semicircular canals of the inner ear are involved in balance and velocity control. Being crucial to ensure efficient mobility, their morphology exhibits an evolutionary conservatism attributed to stabilizing selection. Release of selection in slow-moving animals has been argued to lead to morphological divergence and increased inter-individual variation. In its natural habitat, the house mouse Mus musculus moves in a tridimensional space where efficient balance is required. In contrast, laboratory mice in standard cages are severely restricted in their ability to move, which possibly reduces selection on the inner ear morphology. This effect was tested by comparing four groups of mice: several populations of wild mice trapped in commensal habitats in France; their second-generation laboratory offspring, to assess plastic effects related to breeding conditions; a standard laboratory strain (Swiss) that evolved for many generations in a regime of mobility reduction; and hybrids between wild offspring and Swiss mice. The morphology of the semicircular canals was quantified using a set of 3D landmarks and semi-landmarks analyzed using geometric morphometric protocols. Levels of inter-population, inter-individual (disparity) and intra-individual (asymmetry) variation were compared. All wild mice shared a similar inner ear morphology, in contrast to the important divergence of the Swiss strain. The release of selection in the laboratory strain obviously allowed for an important and rapid drift in the otherwise conserved structure. Shared traits between the inner ear of the lab strain and domestic pigs suggested a common response to mobility reduction in captivity. The lab-bred offspring of wild mice also differed from their wild relatives, suggesting plastic response related to maternal locomotory behavior, since inner ear morphology matures before birth in mammals. The signature observed in lab-bred wild mice and the lab strain was however not congruent, suggesting that plasticity did not participate to the divergence of the laboratory strain. However, contrary to the expectation, wild mice displayed slightly higher levels of inter-individual variation than laboratory mice, possibly due to the higher levels of genetic variance within and among wild populations compared to the lab strain. Differences in fluctuating asymmetry levels were detected, with the laboratory strain occasionally displaying higher asymmetry scores than its wild relatives. This suggests that there may indeed be a release of selection and/or a decrease in developmental stability in the laboratory strain.
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Affiliation(s)
- Sabrina Renaud
- Laboratoire de Biométrie et Biologie Evolutive (LBBE), UMR 5558, CNRS, Université Claude Bernard Lyon 1, Université de Lyon, Villeurbanne, France
| | - Léa Amar
- Laboratoire de Biométrie et Biologie Evolutive (LBBE), UMR 5558, CNRS, Université Claude Bernard Lyon 1, Université de Lyon, Villeurbanne, France
| | - Pascale Chevret
- Laboratoire de Biométrie et Biologie Evolutive (LBBE), UMR 5558, CNRS, Université Claude Bernard Lyon 1, Université de Lyon, Villeurbanne, France
| | - Caroline Romestaing
- Laboratoire d'Ecologie des Hydrosystèmes Naturels et Anthropisés (LEHNA), UMR 5023, CNRS, ENTPE, Université Claude Bernard Lyon 1, Université de Lyon, Villeurbanne, France
| | - Jean-Pierre Quéré
- Centre de Biologie et Gestion des Populations (INRA/IRD/Cirad/Montpellier SupAgro), Campus International de Baillarguet, Montferrier-sur-Lez Cedex, France
| | - Corinne Régis
- Laboratoire de Biométrie et Biologie Evolutive (LBBE), UMR 5558, CNRS, Université Claude Bernard Lyon 1, Université de Lyon, Villeurbanne, France
| | - Renaud Lebrun
- Institut des Sciences de l'Évolution (ISE-M), UMR 5554, CNRS/UM/IRD/EPHE, Université de Montpellier, Montpellier, France
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Asar Y, Sauquet H, Ho SYW. Evaluating the Accuracy of Methods for Detecting Correlated Rates of Molecular and Morphological Evolution. Syst Biol 2023; 72:1337-1356. [PMID: 37695237 PMCID: PMC10924723 DOI: 10.1093/sysbio/syad055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 09/04/2023] [Accepted: 09/08/2023] [Indexed: 09/12/2023] Open
Abstract
Determining the link between genomic and phenotypic change is a fundamental goal in evolutionary biology. Insights into this link can be gained by using a phylogenetic approach to test for correlations between rates of molecular and morphological evolution. However, there has been persistent uncertainty about the relationship between these rates, partly because conflicting results have been obtained using various methods that have not been examined in detail. We carried out a simulation study to evaluate the performance of 5 statistical methods for detecting correlated rates of evolution. Our simulations explored the evolution of molecular sequences and morphological characters under a range of conditions. Of the methods tested, Bayesian relaxed-clock estimation of branch rates was able to detect correlated rates of evolution correctly in the largest number of cases. This was followed by correlations of root-to-tip distances, Bayesian model selection, independent sister-pairs contrasts, and likelihood-based model selection. As expected, the power to detect correlated rates increased with the amount of data, both in terms of tree size and number of morphological characters. Likewise, greater among-lineage rate variation in the data led to improved performance of all 5 methods, particularly for Bayesian relaxed-clock analysis when the rate model was mismatched. We then applied these methods to a data set from flowering plants and did not find evidence of a correlation in evolutionary rates between genomic data and morphological characters. The results of our study have practical implications for phylogenetic analyses of combined molecular and morphological data sets, and highlight the conditions under which the links between genomic and phenotypic rates of evolution can be evaluated quantitatively.
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Affiliation(s)
- Yasmin Asar
- School of Life and Environmental Sciences, University of Sydney, Sydney, NSW 2006, Australia
| | - Hervé Sauquet
- National Herbarium of New South Wales (NSW), Royal Botanic Gardens and Domain Trust, Sydney, NSW 2000, Australia
- Evolution and Ecology Research Centre, School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, NSW 2052, Australia
| | - Simon Y W Ho
- School of Life and Environmental Sciences, University of Sydney, Sydney, NSW 2006, Australia
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Decoupled Patterns of Diversity and Disparity Characterize an Ecologically Specialized Lineage of Neotropical Cricetids. Evol Biol 2023. [DOI: 10.1007/s11692-022-09596-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Characterization of Two New Apodemus Mitogenomes (Rodentia: Muridae) and Mitochondrial Phylogeny of Muridae. DIVERSITY 2022. [DOI: 10.3390/d14121089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Apodemus is the most common small rodent species in the Palearctic realm and an ideal species for biogeographical research and understanding environmental changes. Elucidating phylogenetic relationships will help us better understand species adaptation and genetic evolution. Due to its stable structure, maternal inheritance, and rapid evolution, the mitogenome has become a hot spot for taxonomic and evolutionary studies. In this research, we determined the mitochondrial genome of Apodemus agrarius ningpoensis and Apodemus draco draco and studied the phylogeny of Muridae using ML and BI trees based on all known complete mitogenomes. The mitochondrial genome of Apodemus agrarius ningpoensis was 16,262 bp, whereas that of Apodemus draco draco was 16,222 bp, and both encoded 13 protein-coding genes, 2 ribosomal RNA genes, and 22 transfer RNA genes. Analysis of base composition showed a clear A-T preference. All tRNAs except tRNASer and tRNALys formed a typical trilobal structure. All protein-coding genes contained T- and TAA as stop codons. Phylogeny analysis revealed two main branches in the Muridae family. Apodemus agrarius ningpoensis formed sister species with Apodemus chevrieri, whereas Apodemus draco draco with Apodemus latronum. Our findings provide theoretical basis for future studies focusing on the mitogenome evolution of Apodemus.
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Ding L, Luo G, Zhou Q, Sun Y, Liao J. Comparative Mitogenome Analysis of Gerbils and the Mitogenome Phylogeny of Gerbillinae (Rodentia: Muridae). Biochem Genet 2022; 60:2226-2249. [PMID: 35314913 DOI: 10.1007/s10528-022-10213-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 02/24/2022] [Indexed: 11/02/2022]
Abstract
To enrich the mitogenomic database of Gerbillinae (Rodentia: Muridae), mitogenomes of three gerbils from different genera, Meriones tamariscinus (16,393 bp), Brachiones przewalskii (16,357 bp), and Rhombomys opimus (16,352 bp), were elaborated and compared with those of other gerbils in the present study. The three gerbil mitogenomes consisted of 2 ribosomal RNA genes, 13 protein-coding genes (PCGs), 22 transfer RNA genes, and one control region. Here, gerbil mitogenomes have shown unique characteristics in terms of base composition, codon usage, non-coding region, and the replication origin of the light strand. There was no significant correlation between the nucleotide percentage of G + C and the phylogenetic status in gerbils, and between the GC content of PCGs and the leucine count. Phylogenetic relationships of the subfamily Gerbillinae were reconstructed by 7 gerbils that represented four genera based on concatenated mitochondrial DNA data using both Bayesian Inference and Maximum Likelihood. The phylogenetic analysis indicated that M. tamariscinus was phylogenetically distant from the genus Meriones, but has a close relationship with R. opimus. B. przewalskii was closely related to the genus Meriones rather than that of R. opimus.
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Affiliation(s)
- Li Ding
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, China.,School of Life Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Guangjie Luo
- School of Life Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Quan Zhou
- School of Life Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Yuanhai Sun
- School of Life Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Jicheng Liao
- School of Life Sciences, Lanzhou University, Lanzhou, 730000, China.
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Geomorphometric differences in shape and size of the cranium and mandible among three cytotypes of Nannospalax nehringi (Satunin, 1898) (Rodentia: Spalacidae) from East Anatolia. ZOOL ANZ 2022. [DOI: 10.1016/j.jcz.2022.01.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Iaeger CT, Maestri R, Fornel R. Diversification of the cranium and mandible of spiny rats of the genus Trinomys (Rodentia: Echimyidae) in an environmental and phylogenetic context. J Mammal 2021. [DOI: 10.1093/jmammal/gyaa177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Evolutionary constraints and ecological pressures influence species’ morphological diversity. The aim of this study was to explore patterns of morphological variation, to investigate the influence of environmental variables on morphological differentiation, and assess the strength of phylogenetic signal for the cranium and mandible in spiny rats of the genus Trinomys. We examined 377 crania and mandibles of all species of the genus Trinomys. We used geometric morphometric methods based on two-dimensional anatomical landmarks to describe cranium and mandible shape and size. Phylogenetic signal was tested using the K statistics and associations between morphology and environmental variables were made using a phylogenetic partial least squares analysis. We found marked differences in size and shape in the synchranium among species, especially in the segregation of T. albispinus and T. yonenagae from the other species, which in turn greatly overlapped both in size and shape spaces. We found a weak phylogenetic signal for size of the synchranium and intermediate phylogenetic signals for shape, a pattern similar to other studies. Differentiation of the synchranium shape in Trinomys was associated largely with precipitation-related variables, while the association between size and environmental variables was weak. Notably, Trinomys species inhabiting xeric environments had relatively larger tympanic bullae.
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Affiliation(s)
- Chaiane Teila Iaeger
- Programa de Pós-Graduação em Ecologia - Universidade Regional Integrada do Alto Uruguai e das Missões – URI Campus Erechim, Av. Sete de Setembro, Erechim, Rio Grande do Sul, Brazil
| | - Renan Maestri
- Programa de Pós-Graduação em Ecologia - Universidade Federal do Rio Grande do Sul – UFRGS, Av. Bento Gonçalves, Porto Alegre, Rio Grande do Sul, Brazil
| | - Rodrigo Fornel
- Programa de Pós-Graduação em Ecologia - Universidade Regional Integrada do Alto Uruguai e das Missões – URI Campus Erechim, Av. Sete de Setembro, Erechim, Rio Grande do Sul, Brazil
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Marcy AE, Guillerme T, Sherratt E, Rowe KC, Phillips MJ, Weisbecker V. Australian Rodents Reveal Conserved Cranial Evolutionary Allometry across 10 Million Years of Murid Evolution. Am Nat 2020; 196:755-768. [PMID: 33211559 DOI: 10.1086/711398] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
AbstractAmong vertebrates, placental mammals are particularly variable in the covariance between cranial shape and body size (allometry), with rodents being a major exception. Australian murid rodents allow an assessment of the cause of this anomaly because they radiated on an ecologically diverse continent notably lacking other terrestrial placentals. Here, we use 3D geometric morphometrics to quantify species-level and evolutionary allometries in 38 species (317 crania) from all Australian murid genera. We ask whether ecological opportunity resulted in greater allometric diversity compared with other rodents or whether conserved allometry suggests intrinsic constraints and/or stabilizing selection. We also assess whether cranial shape variation follows the proposed rule of craniofacial evolutionary allometry (CREA), whereby larger species have relatively longer snouts and smaller braincases. To ensure we could differentiate parallel versus nonparallel species-level allometric slopes, we compared the slopes of rarefied samples across all clades. We found exceedingly conserved allometry and CREA-like patterns across the 10-million-year split between Mus and Australian murids. This could support both intrinsic-constraint and stabilizing-selection hypotheses for conserved allometry. Large-bodied frugivores evolved faster than other species along the allometric trajectory, which could suggest stabilizing selection on the shape of the masticatory apparatus as body size changes.
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Chevret P, Hautier L, Ganem G, Herman J, Agret S, Auffray JC, Renaud S. Genetic structure in Orkney island mice: isolation promotes morphological diversification. Heredity (Edinb) 2020; 126:266-278. [PMID: 32980864 DOI: 10.1038/s41437-020-00368-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 09/04/2020] [Accepted: 09/04/2020] [Indexed: 11/09/2022] Open
Abstract
Following human occupation, the house mouse has colonised numerous islands, exposing the species to a wide variety of environments. Such a colonisation process, involving successive founder events and bottlenecks, may either promote random evolution or facilitate adaptation, making the relative importance of adaptive and stochastic processes in insular evolution difficult to assess. Here, we jointly analyse genetic and morphometric variation in the house mice (Mus musculus domesticus) from the Orkney archipelago. Genetic analyses, based on mitochondrial DNA and microsatellites, revealed considerable genetic structure within the archipelago, suggestive of a high degree of isolation and long-lasting stability of the insular populations. Morphometric analyses, based on a quantification of the shape of the first upper molar, revealed considerable differentiation compared to Western European populations, and significant geographic structure in Orkney, largely congruent with the pattern of genetic divergence. Morphological diversification in Orkney followed a Brownian motion model of evolution, suggesting a primary role for random drift over adaptation to local environments. Substantial structuring of human populations in Orkney has recently been demonstrated, mirroring the situation found here in house mice. This synanthropic species may thus constitute a bioproxy of human structure and practices even at a very local scale.
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Affiliation(s)
- Pascale Chevret
- Laboratoire de Biométrie et Biologie Evolutive, UMR 5558 CNRS Université Lyon 1, Université de Lyon, Campus de la Doua, 69100, Villeurbanne, France.
| | - Lionel Hautier
- Institut des Sciences de l'Evolution de Montpellier (ISEM), UMR 5554, Université de Montpellier, CNRS, EPHE, IRD, Montpellier, France
| | - Guila Ganem
- Institut des Sciences de l'Evolution de Montpellier (ISEM), UMR 5554, Université de Montpellier, CNRS, EPHE, IRD, Montpellier, France
| | - Jeremy Herman
- Department of Natural Sciences, National Museums Scotland, Chambers Street, Edinburgh, EH1 1JF, UK
| | - Sylvie Agret
- Institut des Sciences de l'Evolution de Montpellier (ISEM), UMR 5554, Université de Montpellier, CNRS, EPHE, IRD, Montpellier, France
| | - Jean-Christophe Auffray
- Institut des Sciences de l'Evolution de Montpellier (ISEM), UMR 5554, Université de Montpellier, CNRS, EPHE, IRD, Montpellier, France
| | - Sabrina Renaud
- Laboratoire de Biométrie et Biologie Evolutive, UMR 5558 CNRS Université Lyon 1, Université de Lyon, Campus de la Doua, 69100, Villeurbanne, France
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Ding L, Liao J. Phylogeography of the Tibetan hamster Cricetulus kamensis in response to uplift and environmental change in the Qinghai-Tibet Plateau. Ecol Evol 2019; 9:7291-7306. [PMID: 31380051 PMCID: PMC6662396 DOI: 10.1002/ece3.5301] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Revised: 04/28/2019] [Accepted: 05/08/2019] [Indexed: 11/16/2022] Open
Abstract
AIM The evolutionary process of an organism provides valuable data toward an understanding of the Earth evolution history. To investigate the relationship between the uplift of the Qinghai-Tibet Plateau (QTP) and mammalian evolution since the late Cenozoic, the geographic distribution of genetic variations in the Tibetan hamster Cricetulus kamensis was investigated using phylogeographical methods. In particular, population divergence, demographic history, genetic variation, and the prediction of species distribution area were investigated. LOCATION The Qinghai-Tibet Plateau. METHODS A total of 53 specimens, representing 13 geographic populations, were collected from the QTP. The phylogeographical pattern and demographic history of C. kamensis were analyzed, and the probable factors in the QTP uplift and the Quaternary glacial periods were inferred from one nuclear and four mitochondrial genes. Furthermore, the species distribution model (SDM) was used to predict changes in potentially suitable habitats since the last Interglacial. RESULTS Phylogenetic analysis demonstrated that two major genetic differentiations of the C. kamensis population occurred during the Early Pleistocene that were influenced by the Qing-Zang tectonic movement from the Middle Pliocene to the Early Pleistocene. Genetic distance between two major clades indicated low genetic divergence. Demographic history analysis showed that the C. kamensis population was affected by the Quaternary glacial period. SDM analysis indicated that C. kamensis was endemic to the QTP and the suitable habitat was affected by climate change, especially during the Last Glacial Maximum (LGM). MAIN CONCLUSION Our results indicated that the QTP uplift led to the population divergence of C. kamensis, and vicariance well accounted for the geographic distribution of genetic variation in C. kamensis as a result of genetic divergence and lack of gene flow. The genetic distance shows that C. alticola may be a subspecies of C. kamensis. Demographic history analysis suggests that the QTP was affected by the last glacial period. SDM analysis supports that almost the entire QTP is covered by a huge ice sheet during the LGM.
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Affiliation(s)
- Li Ding
- School of Life SciencesLanzhou UniversityLanzhouChina
| | - Jicheng Liao
- School of Life SciencesLanzhou UniversityLanzhouChina
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Selçuk AY, Kaya A, Kefelioğlu H. Differences in shape and size of skull and mandible in Talpa species (Mammalia: Eulipotyphla) from Turkey. ZOOLOGY IN THE MIDDLE EAST 2018. [DOI: 10.1080/09397140.2018.1552304] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Ahmet Yesari Selçuk
- Department of Biology, Faculty of Science, Ondokuz Mayis University, Samsun, Turkey
| | - Alaettin Kaya
- Department of Biology, Faculty of Science, Dicle University, Diyarbakır, Turkey
| | - Haluk Kefelioğlu
- Department of Biology, Faculty of Science, Ondokuz Mayis University, Samsun, Turkey
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Reef fish functional traits evolve fastest at trophic extremes. Nat Ecol Evol 2018; 3:191-199. [DOI: 10.1038/s41559-018-0725-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2018] [Accepted: 10/21/2018] [Indexed: 12/11/2022]
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Feijó A, Patterson BD, Cordeiro-Estrela P. Taxonomic revision of the long-nosed armadillos, Genus Dasypus Linnaeus, 1758 (Mammalia, Cingulata). PLoS One 2018; 13:e0195084. [PMID: 29624590 PMCID: PMC5889077 DOI: 10.1371/journal.pone.0195084] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Accepted: 02/28/2018] [Indexed: 11/23/2022] Open
Abstract
Dasypus is the most speciose genus of the order Cingulata, including approximately 40% of known living armadillos. Nine species are currently recognized, although comprehensive analyses of the entire genus have never been done. Our aim is to revise the taxonomy of the long-nosed armadillos and properly define the taxa. We examined 2126 specimens of Dasypus preserved in 39 different museum collections, including 17 type specimens. Three complementary methods were applied to explore morphological datasets both qualitatively and quantitatively. Qualitative morphological variation in discrete characters was assessed by direct observations of specimens. Linear morphometric variation was based on external data and cranial measurements of 887 adult skulls. The shape and size of the skull was abstracted through two-dimensional geometric morphometric analyses of dorsal, lateral and ventral views of respectively 421, 211, and 220 adult specimens. Our results converge on the recognition of eight living species (D. beniensis, D. kappleri, D. mazzai, D. novemcinctus, D. pastasae, D. pilosus, D. sabanicola, and D. septemcinctus), and three subspecies of D. septemcinctus (D. s. septemcinctus, D. s. hybridus, and a new subspecies from Cordoba described here). Information on type material, diagnosis, distribution, and taxonomic comments for each taxon are provided. We designate a lectotype for D. novemcinctus; and a neotype for Loricatus hybridus (= D. septemcinctus hybridus).
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Affiliation(s)
- Anderson Feijó
- Laboratório de mamíferos, Departamento de Sistemática e Ecologia, Centro de Ciências Exatas e da Natureza, Universidade Federal da Paraíba, Campus I, João Pessoa, PB, Brazil
- Programa de Pós-Graduação em Ciências Biológicas (Zoologia), Departamento de Sistemática e Ecologia, Centro de Ciências Exatas e da Natureza, Universidade Federal da Paraíba, Campus I, João Pessoa, PB, Brazil
- Integrative Research Center, Field Museum of Natural History, Chicago, IL, United States of America
- * E-mail:
| | - Bruce D. Patterson
- Integrative Research Center, Field Museum of Natural History, Chicago, IL, United States of America
| | - Pedro Cordeiro-Estrela
- Laboratório de mamíferos, Departamento de Sistemática e Ecologia, Centro de Ciências Exatas e da Natureza, Universidade Federal da Paraíba, Campus I, João Pessoa, PB, Brazil
- Programa de Pós-Graduação em Ciências Biológicas (Zoologia), Departamento de Sistemática e Ecologia, Centro de Ciências Exatas e da Natureza, Universidade Federal da Paraíba, Campus I, João Pessoa, PB, Brazil
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da Silva M, Noll FB, e Castro ACMC. Phylogeographic analysis reveals high genetic structure with uniform phenotypes in the paper wasp Protonectarina sylveirae (Hymenoptera: Vespidae). PLoS One 2018. [PMID: 29538451 PMCID: PMC5851647 DOI: 10.1371/journal.pone.0194424] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Swarm-founding wasps are endemic and common representatives of neotropical fauna and compose an interesting social tribe of vespids, presenting both complex social characteristics and uncommon traits for a eusocial group, such as the absence of castes with distinct morphology. The paper wasp Protonectarina sylveirae (Saussure) presents a broad distribution from Brazil, Argentina and Paraguay, occurring widespread in the Atlantic rainforest and arboreal Caatinga, being absent in the Amazon region. Given the peculiar distribution among swarm-founding wasps, an integrative approach to reconstruct the evolutionary history of P. sylveirae in a spatial-temporal framework was performed to investigate: the presence of genetic structure and its relationship with the geography, the evolution of distinct morphologic lineages and the possible historical event(s) in Neotropical region, which could explain the observed phylogeographic pattern. Individuals of P. sylveirae were obtained from populations of 16 areas throughout its distribution for DNA extraction and amplification of mitochondrial genes 12S, 16S and COI. Analysis of genetic diversity, construction of haplotype net, analysis of population structure and dating analysis of divergence time were performed. A morphometric analysis was also performed using 8 measures of the body of the adult (workers) to test if there are morphological distinction among populations. Thirty-five haplotypes were identified, most of them exclusively of a group and a high population structure was found. The possibility of genetic divergence because of isolation by distance was rejected. Morphological analysis pointed to a great uniformity in phenotypes, with only a small degree of differentiation between populations of south and the remaining. Divergence time analysis showed a Middle/Late Miocene origin, a period where an extensive marine ingression occurred in South America. Divergence of haplogroups began from the Plio/Pleistocene boundary and the last glacial maximum most likely modeled the current distribution of species, even though it was not the cause of genetic breaks.
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Affiliation(s)
- Marjorie da Silva
- Departamento de Zoologia e Botânica, Instituto de Biociências, Letras e Ciências Exatas, Universidade Estadual Paulista “Júlio de Mesquita Filho”, São José do Rio Preto, São Paulo, Brazil
- * E-mail:
| | - Fernando Barbosa Noll
- Departamento de Zoologia e Botânica, Instituto de Biociências, Letras e Ciências Exatas, Universidade Estadual Paulista “Júlio de Mesquita Filho”, São José do Rio Preto, São Paulo, Brazil
| | - Adriana C. Morales-Corrêa e Castro
- Departamento de Biologia Aplicada à Agropecuária, Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista “Júlio de Mesquita Filho”, Jaboticabal, São Paulo, Brazil
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McLean BS, Helgen KM, Goodwin HT, Cook JA. Trait‐specific processes of convergence and conservatism shape ecomorphological evolution in ground‐dwelling squirrels. Evolution 2018; 72:473-489. [DOI: 10.1111/evo.13422] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Accepted: 12/18/2017] [Indexed: 12/27/2022]
Affiliation(s)
- Bryan S. McLean
- Department of Biology and Museum of Southwestern Biology University of New Mexico Albuquerque New Mexico 87131
- Florida Museum of Natural History University of Florida Gainesville Florida 32611
| | - Kristofer M. Helgen
- School of Biological Sciences University of Adelaide Adelaide SA 5005 Australia
| | - H. Thomas Goodwin
- Department of Biology Andrews University Berrien Springs Michigan 49104
| | - Joseph A. Cook
- Department of Biology and Museum of Southwestern Biology University of New Mexico Albuquerque New Mexico 87131
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Gomez Cano AR, Kimura Y, Blanco F, Menéndez I, Álvarez-Sierra MA, Hernández Fernández M. Ecomorphological characterization of murines and non-arvicoline cricetids (Rodentia) from south-western Europe since the latest Middle Miocene to the Mio-Pliocene boundary (MN 7/8-MN13). PeerJ 2017; 5:e3646. [PMID: 28966888 PMCID: PMC5619236 DOI: 10.7717/peerj.3646] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Accepted: 07/13/2017] [Indexed: 11/21/2022] Open
Abstract
Rodents are the most speciose group of mammals and display a great ecological diversity. Despite the greater amount of ecomorphological information compiled for extant rodent species, studies usually lack of morphological data on dentition, which has led to difficulty in directly utilizing existing ecomorphological data of extant rodents for paleoecological reconstruction because teeth are the most common or often the only micromammal fossils. Here, we infer the environmental ranges of extinct rodent genera by extracting habitat information from extant relatives and linking it to extinct taxa based on the phenogram of the cluster analysis, in which variables are derived from the principal component analysis on outline shape of the upper first molars. This phenotypic “bracketing” approach is particularly useful in the study of the fossil record of small mammals, which is mostly represented by isolated teeth. As a case study, we utilize extinct genera of murines and non-arvicoline cricetids, ranging from the Iberoccitanian latest middle Miocene to the Mio-Pliocene boundary, and compare our results thoroughly with previous paleoecological reconstructions inferred by different methods. The resultant phenogram shows a predominance of ubiquitous genera among the Miocene taxa, and the presence of a few forest specialists in the two rodent groups (Murinae and Cricetidae), along with the absence of open environment specialists in either group of rodents. This appears to be related to the absence of enduring grassland biomes in the Iberian Peninsula during the late Miocene. High consistency between our result and previous studies suggests that this phenotypic “bracketing” approach is a very useful tool.
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Affiliation(s)
- Ana R Gomez Cano
- Institut Català de Paleontologia Miquel Crusafont, Universitat Autónoma de Barcelona, Cerdanyola del Vallès, Barcelona, Spain.,Transmitting Science, Barcelona, Spain
| | - Yuri Kimura
- Department of Geology and Paleontology, National Museum of Nature and Science, Tokyo, Japan
| | - Fernando Blanco
- Departamento de Paleontología, Facultad de Ciencias Geológicas, Universidad Complutense de Madrid, Madrid, Spain
| | - Iris Menéndez
- Departamento de Paleontología, Facultad de Ciencias Geológicas, Universidad Complutense de Madrid, Madrid, Spain.,Departamento de Cambio Medioambiental, Instituto de Geociencias (UCM, CSIC), Madrid, Spain
| | - María A Álvarez-Sierra
- Departamento de Paleontología, Facultad de Ciencias Geológicas, Universidad Complutense de Madrid, Madrid, Spain.,Departamento de Cambio Medioambiental, Instituto de Geociencias (UCM, CSIC), Madrid, Spain
| | - Manuel Hernández Fernández
- Departamento de Paleontología, Facultad de Ciencias Geológicas, Universidad Complutense de Madrid, Madrid, Spain.,Departamento de Cambio Medioambiental, Instituto de Geociencias (UCM, CSIC), Madrid, Spain
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18
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Seligmann H, Warthi G. Genetic Code Optimization for Cotranslational Protein Folding: Codon Directional Asymmetry Correlates with Antiparallel Betasheets, tRNA Synthetase Classes. Comput Struct Biotechnol J 2017; 15:412-424. [PMID: 28924459 PMCID: PMC5591391 DOI: 10.1016/j.csbj.2017.08.001] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Revised: 07/20/2017] [Accepted: 08/05/2017] [Indexed: 12/14/2022] Open
Abstract
A new codon property, codon directional asymmetry in nucleotide content (CDA), reveals a biologically meaningful genetic code dimension: palindromic codons (first and last nucleotides identical, codon structure XZX) are symmetric (CDA = 0), codons with structures ZXX/XXZ are 5'/3' asymmetric (CDA = - 1/1; CDA = - 0.5/0.5 if Z and X are both purines or both pyrimidines, assigning negative/positive (-/+) signs is an arbitrary convention). Negative/positive CDAs associate with (a) Fujimoto's tetrahedral codon stereo-table; (b) tRNA synthetase class I/II (aminoacylate the 2'/3' hydroxyl group of the tRNA's last ribose, respectively); and (c) high/low antiparallel (not parallel) betasheet conformation parameters. Preliminary results suggest CDA-whole organism associations (body temperature, developmental stability, lifespan). Presumably, CDA impacts spatial kinetics of codon-anticodon interactions, affecting cotranslational protein folding. Some synonymous codons have opposite CDA sign (alanine, leucine, serine, and valine), putatively explaining how synonymous mutations sometimes affect protein function. Correlations between CDA and tRNA synthetase classes are weaker than between CDA and antiparallel betasheet conformation parameters. This effect is stronger for mitochondrial genetic codes, and potentially drives mitochondrial codon-amino acid reassignments. CDA reveals information ruling nucleotide-protein relations embedded in reversed (not reverse-complement) sequences (5'-ZXX-3'/5'-XXZ-3').
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Affiliation(s)
- Hervé Seligmann
- Aix-Marseille Univ, Unité de Recherche sur les Maladies Infectieuses et Tropicales Emergentes, UM 63, CNRS UMR7278, IRD 198, INSERM U1095, Institut Hospitalo-Universitaire Méditerranée-Infection, Marseille, Postal code 13385, France
- Dept. Ecol Evol Behav, Alexander Silberman Inst Life Sci, The Hebrew University of Jerusalem, IL-91904 Jerusalem, Israel
| | - Ganesh Warthi
- Aix-Marseille Univ, Unité de Recherche sur les Maladies Infectieuses et Tropicales Emergentes, UM 63, CNRS UMR7278, IRD 198, INSERM U1095, Institut Hospitalo-Universitaire Méditerranée-Infection, Marseille, Postal code 13385, France
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19
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Karanovic I, Sitnikova TY. Morphological and molecular diversity of Lake Baikal candonid ostracods, with description of a new genus. Zookeys 2017:19-56. [PMID: 28769732 PMCID: PMC5523182 DOI: 10.3897/zookeys.684.13249] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Accepted: 06/15/2017] [Indexed: 11/12/2022] Open
Abstract
Uncoupling between molecular and morphological evolution is common in many animal and plant lineages. This is especially frequent among groups living in ancient deep lakes, because these ecosystems promote rapid morphological diversification, and has already been demonstrated for Tanganyika cychlid fishes and Baikal amphipods. Ostracods are also very diverse in these ecosystems, with 107 candonid species described so far from Baikal, majority of them in the genera Candona Baird, 1845 and Pseudocandona Kaufmann, 1900. Here we study their morphological and molecular diversity based on four genes (two nuclear and two mitochondrial), 10 species from the lake, and 28 other species from around the world. The results of our phylogenetic analysis based on a concatenated data set, along with sequence diversity, support only two genetic lineages in the lake and indicate that a majority of the Baikal Candona and Pseudocandona species should be excluded from these genera. We describe a new genus, Mazepovacandonagen. n., to include five Baikal species, all redescribed here. We also amend the diagnosis for the endemic genus Baicalocandona Mazepova, 1972 and redescribe two species. Our study confirms an exceptional morphological diversity of Lake Baikal candonids and shows that both Baikal lineages are closely related to Candona, but only distantly to Pseudocandona.
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Affiliation(s)
- Ivana Karanovic
- Department of Life Science, College of Natural Science, Hanyang University, Seoul 133-791, South Korea; Institute for Marine and Antarctic Studies, University of Tasmania, Private Bag 49, 7001, Hobart, Tasmania, Australia
| | - Tatiana Ya Sitnikova
- Limnological Institute, Siberian Branch, Russian Academy of Sciences, P.O. Box 664033, Irkutsk, Russia
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20
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Camacho-Sanchez M, Leonard JA, Fitriana Y, Tilak MK, Fabre PH. The generic status of Rattus annandalei (Bonhote, 1903) (Rodentia, Murinae) and its evolutionary implications. J Mammal 2017. [DOI: 10.1093/jmammal/gyx081] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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21
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Fabre PH, Herrel A, Fitriana Y, Meslin L, Hautier L. Masticatory muscle architecture in a water-rat from Australasia (Murinae, Hydromys) and its implication for the evolution of carnivory in rodents. J Anat 2017; 231:380-397. [PMID: 28585258 DOI: 10.1111/joa.12639] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/11/2017] [Indexed: 01/29/2023] Open
Abstract
Murines are well known for their generalist diet, but several of them display specializations towards a carnivorous diet such as the amphibious Indo-Pacific water-rats. Despite the fact that carnivory evolved repeatedly in this group, few studies have investigated associated changes in jaw muscle anatomy and biomechanics. Here, we describe the jaw muscles and cranial anatomy of a carnivorous water-rat, Hydromys chrysogaster. The architecture of the jaw musculature of six specimens captured both on Obi and Papua were studied and described using dissections. We identified the origin and insertions of the jaw muscles, and quantified muscle mass, fiber length, physiological cross-sectional area, and muscle vectors for each muscle. Using a biomechanical model, we estimated maximum incisor and molar bite force at different gape angles. Finally, we conducted a 2D geometric morphometric analyses to compare jaw shape, mechanical potential, and diversity in lever-arm ratios for a set of 238 specimens, representative of Australo-Papuan carnivorous and omnivorous murids. Our study reveals major changes in the muscle proportions among Hydromys and its omnivorous close relative, Melomys. Hydromys was found to have large superficial masseter and temporalis muscles as well as a reduced deep masseter and zygomatico-mandibularis, highlighting major functional divergence among omnivorous and carnivorous murines. Changes in these muscles are also accompanied by changes in jaw shape and the lines of action of the muscles. A more vertically oriented masseter, reduced masseteric muscles, as well as an elongated jaw with proodont lower incisors are key features indicative of a reduced propalinality in carnivorous Hydromys. Differences in the fiber length of the masseteric muscles were also detected between Hydromys and Melomys, which highlight potential adaptations to a wide gape in Hydromys, allowing it to prey on larger animals. Using a biomechanical model, we inferred a greater bite force in Hydromys than in Melomys, implying a functional shift between omnivory and carnivory. However, Melomys has an unexpected greater bite force at large gape compared with Hydromys. Compared with omnivorous Melomys, Hydromys have a very distinctive low mandible with a well-developed coronoid process, and a reduced angular process that projects posteriorly to the ascending rami. This jaw shape, along with our mechanical potential and jaw lever ratio estimates, suggests that Hydromys has a faster jaw closing at the incisor, with a higher bite force at the level of the molars. The narrowing of the Hydromys jaw explains this higher lever advantage at the molars, which constitutes a good compromise between a wide gape, a reduced anterior masseteric mass, and long fiber lengths. Lever arms of the superficial and deep masseter are less favourable to force output of the mandible in Hydromys but more favourable to speed. Compared with the small input lever arm defined between the condyle and the angular process, the relatively longer mandible of Hydromys increases the speed at the expense of the output force. This unique combination of morphological features of the masticatory apparatus possibly has permitted Hydromys to become a highly successful amphibious predator in the Indo-Pacific region.
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Affiliation(s)
- P-H Fabre
- Institut des Sciences de l'Evolution (ISEM, UMR 5554 CNRS), Universite Montpellier II, Montpellier, France.,National Museum of Natural History, Smithsonian Institution, Washington, DC, USA.,Harvard Museum of Comparative Zoology, Cambridge, MA, USA
| | - A Herrel
- Département d'Ecologie et de Gestion de la Biodiversité, UMR 7179 C.N.R.S/M.N.H.N., Paris, France.,Evolutionary Morphology of Vertebrates, Ghent University, Gent, Belgium
| | - Y Fitriana
- Museum Zoologicum Bogoriense, Research Center For Biology, Indonesian Institute of Sciences (LIPI), Cibinong, Indonesia
| | - L Meslin
- Institut des Sciences de l'Evolution (ISEM, UMR 5554 CNRS), Universite Montpellier II, Montpellier, France
| | - L Hautier
- Institut des Sciences de l'Evolution (ISEM, UMR 5554 CNRS), Universite Montpellier II, Montpellier, France
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22
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23
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Khemiri H, Colangelo P, Chétoui M, Nouira S. Skull size and shape variation in Psammomys spp. (Rodentia, Gerbillinae) from Tunisia, with emphasis on the impact of allometric variation on species recognition. AFRICAN ZOOLOGY 2016. [DOI: 10.1080/15627020.2016.1233828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Hanene Khemiri
- Laboratory of Animal Ecology, Department of Biology, Sciences Faculty of Tunis, University of Tunis El Manar, Tunis, Tunisia
| | - Paolo Colangelo
- CNR, Istituto per lo studio degli Ecosistemi, Verbania-Pallanza, Italy
| | - M’barek Chétoui
- Laboratory of Animal Ecology, Department of Biology, Sciences Faculty of Tunis, University of Tunis El Manar, Tunis, Tunisia
| | - Saïd Nouira
- Laboratory of Animal Ecology, Department of Biology, Sciences Faculty of Tunis, University of Tunis El Manar, Tunis, Tunisia
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24
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Babiker H, Tautz D. Molecular and phenotypic distinction of the very recently evolved insular subspecies Mus musculus helgolandicus ZIMMERMANN, 1953. BMC Evol Biol 2015; 15:160. [PMID: 26268354 PMCID: PMC4535776 DOI: 10.1186/s12862-015-0439-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2015] [Accepted: 07/29/2015] [Indexed: 11/10/2022] Open
Abstract
Background Populations and subspecies of the house mouse Mus musculus were able to invade new regions worldwide in the wake of human expansion. Here we investigate the origin and colonization history of the house mouse inhabiting the small island of Heligoland on the German Bight - Mus musculus helgolandicus. It was first described by Zimmermann in 1953, based on morphological descriptions which were considered to be a mosaic between the subspecies M. m. domesticus and M. m. musculus. Since mice on islands are excellent evolutionary model systems, we have focused here on a molecular characterization and an extended phenotype analysis. Results The molecular data show that the mice from Heligoland are derived from M. m. domesticus based on mitochondrial D-loop sequences as well as on four nuclear diagnostic markers, including one each from the sex-chromosomes. STRUCTURE analysis based on 21 microsatellite markers assigns Heligoland mice to a distinct population and D-loop network analysis suggests that they are derived from a single colonization event. In spite of mice from the mainland arriving by ships, they are apparently genetically refractory against further immigration. Mutation frequencies in complete mitochondrial genome sequences date the colonization age to approximately 400 years ago. Complete genome sequences from three animals revealed a genomic admixture with M. m. musculus genomic regions with at least 6.5 % of the genome affected. Geometric morphometric analysis of mandible shapes including skull samples from two time points during the last century suggest specific adaptations to a more carnivorous diet. Conclusions The molecular and morphological analyses confirm that M. m. helgolandicus consists of a distinct evolutionary lineage with specific adaptations. It shows a remarkable resilience against genetic mixture with mainland populations of M. m. domesticus despite major disturbances in the past century and a high ship traffic. The genomic admixture with M. m. musculus genetic material may have contributed to the genomic distinction of the Heligoland mice. In spite of its young age, M. m. helgolandicus may thus be considered as a true subspecies of Mus, whose evolution was triggered through fast divergence on a small island. Electronic supplementary material The online version of this article (doi:10.1186/s12862-015-0439-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Hiba Babiker
- Max Planck Institute for Evolutionary Biology, August-Thienemann Str. 2, 24306, Plön, Germany.
| | - Diethard Tautz
- Max Planck Institute for Evolutionary Biology, August-Thienemann Str. 2, 24306, Plön, Germany.
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25
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Renaud S, Dufour AB, Hardouin EA, Ledevin R, Auffray JC. Once upon Multivariate Analyses: When They Tell Several Stories about Biological Evolution. PLoS One 2015; 10:e0132801. [PMID: 26192946 PMCID: PMC4507858 DOI: 10.1371/journal.pone.0132801] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2014] [Accepted: 06/19/2015] [Indexed: 01/09/2023] Open
Abstract
Geometric morphometrics aims to characterize of the geometry of complex traits. It is therefore by essence multivariate. The most popular methods to investigate patterns of differentiation in this context are (1) the Principal Component Analysis (PCA), which is an eigenvalue decomposition of the total variance-covariance matrix among all specimens; (2) the Canonical Variate Analysis (CVA, a.k.a. linear discriminant analysis (LDA) for more than two groups), which aims at separating the groups by maximizing the between-group to within-group variance ratio; (3) the between-group PCA (bgPCA) which investigates patterns of between-group variation, without standardizing by the within-group variance. Standardizing within-group variance, as performed in the CVA, distorts the relationships among groups, an effect that is particularly strong if the variance is similarly oriented in a comparable way in all groups. Such shared direction of main morphological variance may occur and have a biological meaning, for instance corresponding to the most frequent standing genetic variation in a population. Here we undertake a case study of the evolution of house mouse molar shape across various islands, based on the real dataset and simulations. We investigated how patterns of main variance influence the depiction of among-group differentiation according to the interpretation of the PCA, bgPCA and CVA. Without arguing about a method performing ‘better’ than another, it rather emerges that working on the total or between-group variance (PCA and bgPCA) will tend to put the focus on the role of direction of main variance as line of least resistance to evolution. Standardizing by the within-group variance (CVA), by dampening the expression of this line of least resistance, has the potential to reveal other relevant patterns of differentiation that may otherwise be blurred.
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Affiliation(s)
- Sabrina Renaud
- Laboratoire de Biométrie et Biologie Evolutive, UMR5558, CNRS, University Lyon 1, 69622 Villeurbanne, France
- * E-mail:
| | - Anne-Béatrice Dufour
- Laboratoire de Biométrie et Biologie Evolutive, UMR5558, CNRS, University Lyon 1, 69622 Villeurbanne, France
| | - Emilie A. Hardouin
- Max Planck Institute of Evolutionary Biology, August-Thienemann-Str. 2, Plön, Germany
- Faculty of Science and Technology, Bournemouth University, Christchurch House, Talbot Campus, Poole, Dorset, United Kingdom
| | - Ronan Ledevin
- Laboratoire de Biométrie et Biologie Evolutive, UMR5558, CNRS, University Lyon 1, 69622 Villeurbanne, France
| | - Jean-Christophe Auffray
- Institut des Sciences de l’Evolution de Montpellier, UMR 5554, CNRS, University Montpellier 2, Montpellier, France
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26
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Lu X, Ge D, Xia L, Huang C, Yang Q. Geometric morphometric study of the skull shape diversification in Sciuridae (Mammalia, Rodentia). Integr Zool 2015; 9:231-45. [PMID: 24952964 DOI: 10.1111/1749-4877.12035] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
It is generally accepted that the high phenotypic diversity of mammals is a combined result of developmental constraint and ecological adaptation, although the influence of these endogenous and exogenous factors varies in different mammal groups. The rodent family Sciuridae represents an ideal candidate for examining phenotypic diversity in relation to phylogeny and ecological adaptations. In the present study, we investigate the effects of phylogeny and lifestyle on the skull shape in different species of Sciuridae by applying geometric morphometric methods. In addition, we investigate the importance of allometry on sciurid skull shape, because results from geometric morphometrics sometimes dispute those of traditional morphometry. Here, we identify significant associations between patristic distances obtained from molecular phylogeny and shape distances in all 3 views of the cranium and the lateral view of the mandible. Multivariate regression demonstrates that shape differences among lifestyle categories are substantial, especially in the dorsal and ventral structures after the influence of phylogeny is taken into account. Allometry plays an important role in the shape variation, although its importance on different skull structures varies. Our results indicate that complex structures of this highly diverse mammal group, which occupies different niches, are affected by ecological factors and developmental constraint.
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Affiliation(s)
- Xuefei Lu
- Institute of Zoology, Chinese Academy of Sciences, Beijing, China; Graduate University of Chinese Academy of Sciences, Beijing, China
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27
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Gómez Cano AR, Hernández Fernández M, Álvarez-Sierra MÁ. Dietary ecology of Murinae (Muridae, Rodentia): a geometric morphometric approach. PLoS One 2013; 8:e79080. [PMID: 24236090 PMCID: PMC3827291 DOI: 10.1371/journal.pone.0079080] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2013] [Accepted: 09/27/2013] [Indexed: 11/24/2022] Open
Abstract
Murine rodents represent a highly diverse group, which displays great ecological versatility. In the present paper we analyse the relationship between dental morphology, on one hand, using geometric morphometrics based upon the outline of first upper molar and the dietary preference of extant murine genera, on the other. This ecomorphological study of extant murine rodents demonstrates that dietary groups can be distinguished with the use of a quantitative geometric morphometric approach based on first upper molar outline. A discriminant analysis of the geometric morphometric variables of the first upper molars enables us to infer the dietary preferences of extinct murine genera from the Iberian Peninsula. Most of the extinct genera were omnivore; only Stephanomys showed a pattern of dental morphology alike that of the herbivore genera.
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Affiliation(s)
- Ana Rosa Gómez Cano
- Departamento de Paleontología, Facultad de Ciencias Geológicas, Universidad Complutense de Madrid, Madrid, Spain
- * E-mail:
| | - Manuel Hernández Fernández
- Departamento de Paleontología, Facultad de Ciencias Geológicas, Universidad Complutense de Madrid, Madrid, Spain
- Departamento de Geología Sedimentaria y Cambio Medioambiental, Instituto de Geociencias (UCM, CSIC), Madrid, Spain
| | - M. Ángeles Álvarez-Sierra
- Departamento de Paleontología, Facultad de Ciencias Geológicas, Universidad Complutense de Madrid, Madrid, Spain
- Departamento de Geología Sedimentaria y Cambio Medioambiental, Instituto de Geociencias (UCM, CSIC), Madrid, Spain
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28
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Stoetzel E, Denys C, Michaux J, Renaud S. Musin Morocco: a Quaternary sequence of intraspecific evolution. Biol J Linn Soc Lond 2013. [DOI: 10.1111/bij.12065] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Emmanuelle Stoetzel
- Département de Préhistoire; Muséum national d'Histoire naturelle; UMR 7194 CNRS; Paris; France
| | - Christiane Denys
- Département Systématique et Evolution; Muséum national d'Histoire naturelle; UMR 7205 CNRS; Paris; France
| | - Jacques Michaux
- Institut des Sciences de l'Evolution; UMR 5554 CNRS, Université Montpellier 2; Montpellier; France
| | - Sabrina Renaud
- Laboratoire de Biométrie et Biologie Evolutive; UMR 5558 CNRS, Université Lyon 1; Villeurbanne; France
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29
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Casanovas-Vilar I, van Dam J. Conservatism and adaptability during squirrel radiation: what is mandible shape telling us? PLoS One 2013; 8:e61298. [PMID: 23593456 PMCID: PMC3617180 DOI: 10.1371/journal.pone.0061298] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2012] [Accepted: 03/11/2013] [Indexed: 11/19/2022] Open
Abstract
Both functional adaptation and phylogeny shape the morphology of taxa within clades. Herein we explore these two factors in an integrated way by analyzing shape and size variation in the mandible of extant squirrels using landmark-based geometric morphometrics in combination with a comparative phylogenetic analysis. Dietary specialization and locomotion were found to be reliable predictors of mandible shape, with the prediction by locomotion probably reflecting the underlying diet. In addition a weak but significant allometric effect could be demonstrated. Our results found a strong phylogenetic signal in the family as a whole as well as in the main clades, which is in agreement with the general notion of squirrels being a conservative group. This fact does not preclude functional explanations for mandible shape, but rather indicates that ancient adaptations kept a prominent role, with most genera having diverged little from their ancestral clade morphologies. Nevertheless, certain groups have evolved conspicuous adaptations that allow them to specialize on unique dietary resources. Such adaptations mostly occurred in the Callosciurinae and probably reflect their radiation into the numerous ecological niches of the tropical and subtropical forests of Southeastern Asia. Our dietary reconstruction for the oldest known fossil squirrels (Eocene, 36 million years ago) show a specialization on nuts and seeds, implying that the development from protrogomorphous to sciuromorphous skulls was not necessarily related to a change in diet.
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Affiliation(s)
- Isaac Casanovas-Vilar
- Institut Català de Paleontologia Miquel Crusafont, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain.
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30
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Helvaci Z, Renaud S, Ledevin R, Adriaens D, Michaux J, Çolak R, Kankiliç T, Kandemir İ, Yiğit N, Çolak E. Morphometric and genetic structure of the edible dormouse (Glis glis): a consequence of forest fragmentation in Turkey. Biol J Linn Soc Lond 2012. [DOI: 10.1111/j.1095-8312.2012.01952.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- Zeycan Helvaci
- Department of Biology; Faculty of Science and Letter; Aksaray University; Campus 68100 Aksaray Turkey
- Department of Biology; Faculty of Science; Ankara University; Tandoğan Campus 06100 Ankara Turkey
| | - Sabrina Renaud
- Laboratoire de Biométrie et Biologie Evolutive; UMR 5558; CNRS; University Lyon 1; Campus de la Doua 69622 Villeurbanne France
| | - Ronan Ledevin
- Anthropologisches Institut & Museum; Universität Zürich-Irchel; Winterthurerstrasse 190 8057 Zürich Switzerland
| | - Dominique Adriaens
- Evolutionary Morphology of Vertebrates; Ghent University; K.L. Ledeganckstraat 35 B-9000 Ghent Belgium
| | - Johan Michaux
- Laboratoire de Génétique des micro-organismes; Université de Liège; Institut de Botanique (Bat. 22) 4000 Liège Belgium
- INRA; UMR CBGP 1062; Campus international de Baillarguet; CS 30016 F-34988 Montferrier-sur-Lez Cedex France
| | - Reyhan Çolak
- Department of Biology; Faculty of Science; Ankara University; Tandoğan Campus 06100 Ankara Turkey
| | - Teoman Kankiliç
- Department of Biology; Faculty of Arts and Science; Niğde University; Campus 51240 Niğde Turkey
| | - İrfan Kandemir
- Department of Biology; Faculty of Science; Ankara University; Tandoğan Campus 06100 Ankara Turkey
| | - Nuri Yiğit
- Department of Biology; Faculty of Science; Ankara University; Tandoğan Campus 06100 Ankara Turkey
| | - Ercüment Çolak
- Department of Biology; Faculty of Science; Ankara University; Tandoğan Campus 06100 Ankara Turkey
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Renaud S, Alibert P, Auffray JC. Modularity as a source of new morphological variation in the mandible of hybrid mice. BMC Evol Biol 2012; 12:141. [PMID: 22873779 PMCID: PMC3506452 DOI: 10.1186/1471-2148-12-141] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2012] [Accepted: 07/17/2012] [Indexed: 12/02/2022] Open
Abstract
Background Hybridization is often seen as a process dampening phenotypic differences accumulated between diverging evolutionary units. For a complex trait comprising several relatively independent modules, hybridization may however simply generate new phenotypes, by combining into a new mosaic modules inherited from each parental groups and parts intermediate with respect to the parental groups. We tested this hypothesis by studying mandible size and shape in a set of first and second generation hybrids resulting from inbred wild-derived laboratory strains documenting two subspecies of house mice, Musmusculus domesticus and Musmusculus musculus. Phenotypic variation of the mandible was divided into nested partitions of developmental, evolutionary and functional modules. Results The size and shape of the modules were differently influenced by hybridization. Some modules seemed to be the result of typical additive effects with hybrids intermediate between parents, some displayed a pattern expected in the case of monogenic dominance, whereas in other modules, hybrids were transgressive. The result is interpreted as the production of novel mandible morphologies. Beyond this modularity, modules in functional interaction tended to display significant covariations. Conclusions Modularity emerges as a source of novel morphological variation by its simple potential to combine different parts of the parental phenotypes into a novel offspring mosaic of modules. This effect is partly counterbalanced by bone remodeling insuring an integration of the mosaic mandible into a functional ensemble, adding a non-genetic component to the production of transgressive phenotypes in hybrids.
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Affiliation(s)
- Sabrina Renaud
- Laboratoire de Biométrie et Biologie Evolutive, UMR 5558, CNRS, Université Lyon 1, 69622, Villeurbanne, France.
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Ledevin R, Quéré JP, Michaux JR, Renaud S. Can tooth differentiation help to understand species coexistence? The case of wood mice in China. J ZOOL SYST EVOL RES 2012. [DOI: 10.1111/j.1439-0469.2012.00666.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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Girard C, Renaud S. Disparity changes in 370 Ma Devonian fossils: the signature of ecological dynamics? PLoS One 2012; 7:e36230. [PMID: 22558396 PMCID: PMC3338699 DOI: 10.1371/journal.pone.0036230] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2012] [Accepted: 03/28/2012] [Indexed: 11/26/2022] Open
Abstract
Early periods in Earth's history have seen a progressive increase in complexity of the ecosystems, but also dramatic crises decimating the biosphere. Such patterns are usually considered as large-scale changes among supra-specific groups, including morphological novelties, radiation, and extinctions. Nevertheless, in the same time, each species evolved by the way of micro-evolutionary processes, extended over millions of years into the evolution of lineages. How these two evolutionary scales interacted is a challenging issue because this requires bridging a gap between scales of observation and processes. The present study aims at transferring a typical macro-evolutionary approach, namely disparity analysis, to the study of fine-scale evolutionary variations in order to decipher what processes actually drove the dynamics of diversity at a micro-evolutionary level. The Late Frasnian to Late Famennian period was selected because it is punctuated by two major macro-evolutionary crises, as well as a progressive diversification of marine ecosystem. Disparity was estimated through this period on conodonts, tooth-like fossil remains of small eel-like predators that were part of the nektonic fauna. The study was focused on the emblematic genus of the period, Palmatolepis. Strikingly, both crises affected an already impoverished Palmatolepis disparity, increasing risks of random extinction. The major disparity signal rather emerged as a cycle of increase and decrease in disparity during the inter-crises period. The diversification shortly followed the first crisis and might correspond to an opportunistic occupation of empty ecological niche. The subsequent oriented shrinking in the morphospace occupation suggests that the ecological space available to Palmatolepis decreased through time, due to a combination of factors: deteriorating climate, expansion of competitors and predators. Disparity changes of Palmatolepis thus reflect changes in the structure of the ecological space itself, which was prone to evolve during this ancient period where modern ecosystems were progressively shaped.
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Affiliation(s)
- Catherine Girard
- Institut des Sciences de l'Evolution, Université Montpellier 2, CNRS, Montpellier, France.
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Guillot G, Renaud S, Ledevin R, Michaux J, Claude J. A Unifying Model for the Analysis of Phenotypic, Genetic, and Geographic Data. Syst Biol 2012; 61:897-911. [DOI: 10.1093/sysbio/sys038] [Citation(s) in RCA: 105] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Jojić V, Nenadović J, Blagojević J, Paunović M, Cvetković D, Vujošević M. Phenetic relationships among four Apodemus species (Rodentia, Muridae) inferred from skull variation. ZOOL ANZ 2012. [DOI: 10.1016/j.jcz.2011.05.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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SIAHSARVIE ROOHOLLAH, AUFFRAY JEANCHRISTOPHE, DARVISH JAMSHID, RAJABI-MAHAM HASSAN, YU HONTSEN, AGRET SYLVIE, BONHOMME FRANÇOIS, CLAUDE JULIEN. Patterns of morphological evolution in the mandible of the house mouse Mus musculus (Rodentia: Muridae). Biol J Linn Soc Lond 2012. [DOI: 10.1111/j.1095-8312.2011.01821.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Ivanović A, Sotiropoulos K, Üzüm N, Džukić G, Olgun K, Cogălniceanu D, Kalezić ML. A phylogenetic view on skull size and shape variation in the smooth newt (
Lissotriton vulgaris
, Caudata, Salamandridae). J ZOOL SYST EVOL RES 2011. [DOI: 10.1111/j.1439-0469.2011.00650.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ana Ivanović
- Institute for Zoology, Faculty of Biology, University of Belgrade, Belgrade, Serbia
| | - Konstantinos Sotiropoulos
- Section of Zoology‐Marine Biology, Department of Biology, University of Athens, Panepistimioupolis, Athens, Greece
| | - Nazan Üzüm
- Adnan Menderes Üniversitesi, Fen‐Edebiyat Fakültesi, Biyoloji Bölümü, Aydin, Turkey
| | - Georg Džukić
- Institute for Biological Research, “Siniša Stanković”, University of Belgrade, Belgrade, Serbia
| | - Kurtuluş Olgun
- Adnan Menderes Üniversitesi, Fen‐Edebiyat Fakültesi, Biyoloji Bölümü, Aydin, Turkey
| | - Dan Cogălniceanu
- Faculty of Natural Sciences, University Ovidius Constanţa, Aleea Universităţii nr. 1, corp B, Constanţa, Romania
| | - Miloš L. Kalezić
- Institute for Zoology, Faculty of Biology, University of Belgrade, Belgrade, Serbia
- Institute for Biological Research, “Siniša Stanković”, University of Belgrade, Belgrade, Serbia
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Morphing of the phylogeographic lineages of the Balkan alpine newts (Ichthyosaura alpestris, Caudata, Salamandridae): in situ morphological diversification. C R Biol 2011; 334:896-905. [PMID: 22123091 DOI: 10.1016/j.crvi.2011.09.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2011] [Revised: 09/07/2011] [Accepted: 09/08/2011] [Indexed: 11/22/2022]
Abstract
Numerous alpine newt (Ichthyosaura alpestris) populations from the Balkans, representing all the previously established phylogeographic lineages, were studied for variations in various morphological characteristics (body size and shape, skull qualitative traits and number of trunk vertebrae). Here, we present a decoupling of morphological and mtDNA phylogeographic substructuring in the alpine newt on the Balkan Peninsula. In sharp contrast to other European newts (Triturus spp., Lissotriton spp.), the vast majority of morphological variation in the alpine newt is concentrated at the population level indicating an in situ morphological diversification. We found that the rate of morphological change is similar to the rate of mtDNA change. We hypothesize that the alpine newts are characterized by non-adaptive morphological evolution.
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Integrated analyses of chromosome, molecular and morphological variability in the Andean mice Eligmodontia puerulus and E. moreni (Rodentia, Cricetidae, Sigmodontinae). Mamm Biol 2011. [DOI: 10.1016/j.mambio.2011.02.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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40
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Heupink TH, Huynen L, Lambert DM. Ancient DNA suggests dwarf and 'giant' emu are conspecific. PLoS One 2011; 6:e18728. [PMID: 21494561 PMCID: PMC3073985 DOI: 10.1371/journal.pone.0018728] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2010] [Accepted: 03/14/2011] [Indexed: 11/19/2022] Open
Abstract
Background The King Island Emu (Dromaius ater) of Australia is one of several extinct emu taxa whose taxonomic relationship to the modern Emu (D. novaehollandiae) is unclear. King Island Emu were mainly distinguished by their much smaller size and a reported darker colour compared to modern Emu. Methodology and Results We investigated the evolutionary relationships between the King Island and modern Emu by the recovery of both nuclear and mitochondrial DNA sequences from sub-fossil remains. The complete mitochondrial control (1,094 bp) and cytochrome c oxidase subunit I (COI) region (1,544 bp), as well as a region of the melanocortin 1 receptor gene (57 bp) were sequenced using a multiplex PCR approach. The results show that haplotypes for King Island Emu fall within the diversity of modern Emu. Conclusions These data show the close relationship of these emu when compared to other congeneric bird species and indicate that the King Island and modern Emu share a recent common ancestor. King Island emu possibly underwent insular dwarfism as a result of phenotypic plasticity. The close relationship between the King Island and the modern Emu suggests it is most appropriate that the former should be considered a subspecies of the latter. Although both taxa show a close genetic relationship they differ drastically in size. This study also suggests that rates of morphological and neutral molecular evolution are decoupled.
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Affiliation(s)
- Tim H. Heupink
- Griffith School of Environment and School of Biomolecular and Physical Sciences, Griffith University, Nathan, Australia
| | - Leon Huynen
- Griffith School of Environment and School of Biomolecular and Physical Sciences, Griffith University, Nathan, Australia
| | - David M. Lambert
- Griffith School of Environment and School of Biomolecular and Physical Sciences, Griffith University, Nathan, Australia
- * E-mail:
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ÁLVAREZ ALICIA, PEREZ SIVAN, VERZI DIEGOH. Ecological and phylogenetic influence on mandible shape variation of South American caviomorph rodents (Rodentia: Hystricomorpha). Biol J Linn Soc Lond 2011. [DOI: 10.1111/j.1095-8312.2011.01622.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Ledevin R, Quéré JP, Renaud S. Morphometrics as an insight into processes beyond tooth shape variation in a bank vole population. PLoS One 2010; 5:e15470. [PMID: 21085584 PMCID: PMC2981563 DOI: 10.1371/journal.pone.0015470] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2010] [Accepted: 09/28/2010] [Indexed: 11/24/2022] Open
Abstract
Phenotype variation is a key feature in evolution, being produced by development and the target of the screening by selection. We focus here on a variable morphological feature: the third upper molar (UM3) of the bank vole, aiming at identifying the sources of this variation. Size and shape of the UM3 occlusal surface was quantified in successive samples of a bank vole population. The first source of variation was the season of trapping, due to differences in the age structure of the population in turn affecting the wear of the teeth. The second direction of variation corresponded to the occurrence, or not, of an additional triangle on the tooth. This intra-specific variation was attributed to the space available at the posterior end of the UM3, allowing or not the addition of a further triangle.This size variation triggering the shape polymorphism is not controlled by the developmental cascade along the molar row. This suggests that other sources of size variation, possibly epigenetic, might be involved. They would trigger an important shape variation as side-effect by affecting the termination of the sequential addition of triangles on the tooth.
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Affiliation(s)
- Ronan Ledevin
- Paléoenvironnements et Paléobiosphère, UMR 5125 CNRS, Université Lyon 1, Villeurbanne, France.
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LEDEVIN RONAN, MICHAUX JOHANR, DEFFONTAINE VALÉRIE, HENTTONEN HEIKKI, RENAUD SABRINA. Evolutionary history of the bank vole Myodes glareolus: a morphometric perspective. Biol J Linn Soc Lond 2010. [DOI: 10.1111/j.1095-8312.2010.01445.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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PEREZ SIVAN, DINIZ-FILHO JOSÉALEXANDREFELIZOLA, ROHLF FJAMES, DOS REIS SÉRGIOFURTADO. Ecological and evolutionary factors in the morphological diversification of South American spiny rats. Biol J Linn Soc Lond 2009. [DOI: 10.1111/j.1095-8312.2009.01307.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Renaud S, Alibert P, Auffray JC. Mandible shape in hybrid mice. Naturwissenschaften 2009; 96:1043-50. [PMID: 19504055 DOI: 10.1007/s00114-009-0563-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2009] [Revised: 05/13/2009] [Accepted: 05/14/2009] [Indexed: 11/26/2022]
Abstract
Hybridisation between closely related species is frequently seen as retarding evolutionary divergence and can also promote it by creating novel phenotypes due to new genetic combinations and developmental interactions. We therefore investigated how hybridisation affects the shape of the mouse mandible, a well-known feature in evo-devo studies. Parental groups corresponded to two strains of the European mouse sub-species Mus musculus domesticus and Mus musculus musculus. Parents and hybrids were bred in controlled conditions. The mandibles of F(1) hybrids are mostly intermediate between parental phenotypes as expected for a complex multigenic character. Nevertheless, a transgressive effect as well as an increased phenotypic variance characterise the hybrids. This suggests that hybridisation between the two subspecies could lead to a higher phenotypic variance due to complex interactions among the parental genomes including non-additive genetic effects. The major direction of variance is conserved, however, among hybrids and parent groups. Hybridisation may thus play a role in the production of original transgressive phenotypes occurring following pre-existing patterns of variance.
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Affiliation(s)
- Sabrina Renaud
- Paléoenvironnement et Paléobiosphère, UMR 5125 CNRS, Université Lyon 1, Bâtiment Géode, 2 Rue Dubois, Campus de la Doua, 69622 Villeurbanne Cedex, France.
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Adams DC, Berns CM, Kozak KH, Wiens JJ. Are rates of species diversification correlated with rates of morphological evolution? Proc Biol Sci 2009; 276:2729-38. [PMID: 19439441 DOI: 10.1098/rspb.2009.0543] [Citation(s) in RCA: 185] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Some major evolutionary theories predict a relationship between rates of proliferation of new species (species diversification) and rates of morphological divergence between them. However, this relationship has not been rigorously tested using phylogeny-based approaches. Here, we test this relationship with morphological and phylogenetic data from 190 species of plethodontid salamanders. Surprisingly, we find that rates of species diversification and morphological evolution are not significantly correlated, such that rapid diversification can occur with little morphological change, and vice versa. We also find that most clades have undergone remarkably similar patterns of morphological evolution (despite extensive sympatry) and that those relatively novel phenotypes are not associated with rapid diversification. Finally, we find a strong relationship between rates of size and shape evolution, which has not been previously tested.
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Affiliation(s)
- Dean C Adams
- Department of Ecology, Evolution, and Organismal Biology, Iowa State University, , Ames, IA 50011, USA.
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Vovlas N, Subbotin SA, Troccoli A, Liébanas G, Castillo P. Molecular phylogeny of the genusRotylenchus(Nematoda, Tylenchida) and description of a new species. ZOOL SCR 2008. [DOI: 10.1111/j.1463-6409.2008.00337.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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