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Fritzsche F, Maier W, Ruf I. Ontogeny of the malleus in Mesocricetus auratus (Mammalia, Rodentia): Systematic and functional implications for the muroid middle ear. Anat Rec (Hoboken) 2024. [PMID: 39205371 DOI: 10.1002/ar.25565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 08/05/2024] [Accepted: 08/07/2024] [Indexed: 09/04/2024]
Abstract
The three mammalian auditory ossicles enhance sound transmission from the tympanic membrane to the inner ear. The anterior anchoring of the malleus is one of the key characters for functional classification of the auditory ossicles. Previous studies revealed a medial outgrowth of the mallear anterior process, the processus internus praearticularis, which serves as an anchor for the auditory ossicle chain but has been often missed due to its delicate nature. Here we describe the development and morphology of the malleus and its processus internus praearticularis in the cricetine rodent Mesocricetus auratus, compared to selected muroid species (Cricetus cricetus, Peromyscus maniculatus, and Mus musculus). Early postnatal stages of Mesocricetus show the formation of the malleus by fusion of the prearticular and mallear main body. The processus internus praearticularis forms an increasing broad lamina fused anteriorly to the ectotympanic in adult stages of all studied species. Peromyscus and Mus show a distinct orbicular apophysis that increases inertia of the malleus and therefore these species represent the microtype of auditory ossicles. In contrast, the center of mass of the malleus in the studied Cricetinae is close to the anatomical axis of rotation and their auditory ossicles represent the transitional type. The microtype belongs to the grundplan of Muroidea and is plesiomorphic for Cricetidae, whereas the transitional type evolved several times within Muroidea and represents an apomorphic feature of Cricetinae.
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Affiliation(s)
- Franziska Fritzsche
- Institut für Ökologie, Evolution und Diversität, Goethe-Universität Frankfurt am Main, Frankfurt am Main, Germany
- Abteilung Messelforschung und Mammalogie, Senckenberg Forschungsinstitut und Naturmuseum Frankfurt, Frankfurt am Main, Germany
| | - Wolfgang Maier
- Abteilung Messelforschung und Mammalogie, Senckenberg Forschungsinstitut und Naturmuseum Frankfurt, Frankfurt am Main, Germany
- Institut für Evolutionsökologie, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - Irina Ruf
- Abteilung Messelforschung und Mammalogie, Senckenberg Forschungsinstitut und Naturmuseum Frankfurt, Frankfurt am Main, Germany
- Institut für Geowissenschaften, Goethe-Universität Frankfurt am Main, Frankfurt am Main, Germany
- Research Center of Paleontology and Stratigraphy, Jilin University, Changchun, China
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2
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Withnell CB, Scarpetta SG. A new perspective on the taxonomy and systematics of Arvicolinae (Gray, 1821) and a new time-calibrated phylogeny for the clade. PeerJ 2024; 12:e16693. [PMID: 38223757 PMCID: PMC10785794 DOI: 10.7717/peerj.16693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Accepted: 11/28/2023] [Indexed: 01/16/2024] Open
Abstract
Background Arvicoline rodents are one of the most speciose and rapidly evolving mammalian lineages. Fossil arvicolines are also among the most common vertebrate fossils found in sites of Pliocene and Pleistocene age in Eurasia and North America. However, there is no taxonomically robust, well-supported, time-calibrated phylogeny for the group. Methods Here we present well-supported hypotheses of arvicoline rodent systematics using maximum likelihood and Bayesian inference of DNA sequences of two mitochondrial genes and three nuclear genes representing 146 (82% coverage) species and 100% of currently recognized arvicoline genera. We elucidate well-supported major clades, reviewed the relationships and taxonomy of many species and genera, and critically compared our resulting molecular phylogenetic hypotheses to previously published hypotheses. We also used five fossil calibrations to generate a time-calibrated phylogeny of Arvicolinae that permitted some reconciliation between paleontological and neontological data. Results Our results are largely congruent with previous molecular phylogenies, but we increased the support in many regions of the arvicoline tree that were previously poorly-sampled. Our sampling resulted in a better understanding of relationships within Clethrionomyini, the early-diverging position and close relationship of true lemmings (Lemmus and Myopus) and bog lemmings (Synaptomys), and provided support for recent taxonomic changes within Microtini. Our results indicate an origin of ∼6.4 Ma for crown arvicoline rodents. These results have major implications (e.g., diversification rates, paleobiogeography) for our confidence in the fossil record of arvicolines and their utility as biochronological tools in Eurasia and North America during the Quaternary.
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Affiliation(s)
- Charles B. Withnell
- Department of Medical Education/ Anne Burnett Marion School of Medicine, Texas Christian University, Fort Worth, TX, United States of America
- Department of Earth and Planetary Sciences/ Jackson School of Geosciences, The University of Texas at Austin, Austin, TX, United States of America
| | - Simon G. Scarpetta
- Department of Earth and Planetary Sciences/ Jackson School of Geosciences, The University of Texas at Austin, Austin, TX, United States of America
- Museum of Vertebrate Zoology, University of California, Berkeley, Berkeley, CA, United States of America
- Department of Environmental Science, University of San Francisco, San Francisco, CA, United States of America
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3
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Wang X, Liang D, Wang X, Tang M, Liu Y, Liu S, Zhang P. Phylogenomics reveals the evolution, biogeography, and diversification history of voles in the Hengduan Mountains. Commun Biol 2022; 5:1124. [PMID: 36284161 PMCID: PMC9596468 DOI: 10.1038/s42003-022-04108-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 10/12/2022] [Indexed: 11/09/2022] Open
Abstract
The Hengduan Mountains (HDM) of China are a biodiversity hotspot whose temperate flora and fauna are among the world's richest. However, the origin and evolution of biodiversity in the HDM remain poorly understood, especially in mammals. Given that the HDM shows the highest richness of vole species in the world, we used whole-exome capture sequencing data from the currently most comprehensive sampling of HDM voles to investigate their evolutionary history and diversification patterns. We reconstructed a robust phylogeny and re-estimated divergence times of the HDM voles. We found that all HDM voles could be divided into a western lineage (Volemys, Proedromys, and Neodon) and an eastern lineage (Caryomys and Eothenomys), and the two lineages originated from two migration events from North Eurasia to the HDM approximately 9 Mya. Both vole lineages underwent a significant acceleration of net diversification from 8-5 Mya, which was temporally congruent with the orogeny of the HDM region. We also identified strong intertribal gene flow among the HDM voles and hypothesized that frequent gene flow might have facilitated the speciation burst of the HDM voles. Our study highlights the importance of both environmental and biotic factors in shaping the biodiversity of mammals in mountain ecosystems.
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Affiliation(s)
- XiaoYun Wang
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Dan Liang
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | | | | | - Yang Liu
- Sichuan Academy of Forestry, Chengdu, China
| | | | - Peng Zhang
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China.
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, Guangdong Province, China.
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4
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ŞEKER PS, SELÇUK AY, SELVİ E, BARAN M, TEBER S, KELEŞ GA, KEFELİOĞLU H, TEZ C, İBİŞ O. Complete mitochondrial genomes of Chionomys roberti and Chionomys nivalis (Mammalia: Rodentia) from Turkey: Insight into their phylogenetic position within Arvicolinae. ORG DIVERS EVOL 2022. [DOI: 10.1007/s13127-022-00559-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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5
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Abramson NI, Bodrov SY, Bondareva OV, Genelt-Yanovskiy EA, Petrova TV. A mitochondrial genome phylogeny of voles and lemmings (Rodentia: Arvicolinae): Evolutionary and taxonomic implications. PLoS One 2021; 16:e0248198. [PMID: 34797834 PMCID: PMC8604340 DOI: 10.1371/journal.pone.0248198] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 11/03/2021] [Indexed: 01/04/2023] Open
Abstract
Arvicolinae is one of the most impressive placental radiations with over 150 extant and numerous extinct species that emerged since the Miocene in the Northern Hemisphere. The phylogeny of Arvicolinae has been studied intensively for several decades using morphological and genetic methods. Here, we sequenced 30 new mitochondrial genomes to better understand the evolutionary relationships among the major tribes and genera within the subfamily. The phylogenetic and molecular dating analyses based on 11,391 bp concatenated alignment of protein-coding mitochondrial genes confirmed the monophyly of the subfamily. While Bayesian analysis provided a high resolution across the entire tree, Maximum Likelihood tree reconstruction showed weak support for the ordering of divergence and interrelationships of tribal level taxa within the most ancient radiation. Both the interrelationships among tribes Lagurini, Ellobiusini and Arvicolini, comprising the largest radiation and the position of the genus Dinaromys within it also remained unresolved. For the first time complex relationships between genus level taxa within the species-rich tribe Arvicolini received full resolution. Particularly Lemmiscus was robustly placed as sister to the snow voles Chionomys in the tribe Arvicolini in contrast with a long-held belief of its affinity with Lagurini. Molecular dating of the origin of Arvicolinae and early divergences obtained from the mitogenome data were consistent with fossil records. The mtDNA estimates for putative ancestors of the most genera within Arvicolini appeared to be much older than it was previously proposed in paleontological studies.
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Affiliation(s)
- Natalia I. Abramson
- Department of Molecular Systematics, Laboratory of Theriology, Zoological Institute RAS, Saint Petersburg, Russia
| | - Semyon Yu. Bodrov
- Department of Molecular Systematics, Laboratory of Theriology, Zoological Institute RAS, Saint Petersburg, Russia
| | - Olga V. Bondareva
- Department of Molecular Systematics, Laboratory of Theriology, Zoological Institute RAS, Saint Petersburg, Russia
| | - Evgeny A. Genelt-Yanovskiy
- Department of Molecular Systematics, Laboratory of Theriology, Zoological Institute RAS, Saint Petersburg, Russia
| | - Tatyana V. Petrova
- Department of Molecular Systematics, Laboratory of Theriology, Zoological Institute RAS, Saint Petersburg, Russia
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6
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Mitochondrial Genome Evolution, Genetic Diversity, and Population Structure in British Water Voles ( Arvicola amphibius). Genes (Basel) 2021; 12:genes12020138. [PMID: 33494532 PMCID: PMC7910943 DOI: 10.3390/genes12020138] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 01/18/2021] [Accepted: 01/20/2021] [Indexed: 01/12/2023] Open
Abstract
The European water vole (Arvicola amphibius) is a rodent within the subfamily Arvicolinae. In Britain, water voles have declined rapidly during the last century, making them a conservation priority. The relationship of Arvicola to other genera within Arvicolinae remains debated. Additionally, the impact that captive breeding programs in Britain are having on the genetic diversity of water voles is unknown. We use available mitochondrial genomes to construct the phylogeny of species within Arvicolinae, followed by sequencing the mitochondrial DNA control region of 17 individuals from a captive population of water voles in Britain to assess their genetic diversity and population structure. Our study first provides an updated phylogenetic tree of Arvicolinae using the mitochondrial genome of 31 species. Second, our results show considerable genetic diversity in the captive population of water voles, when compared with natural populations in Britain. We confirm the grouping of British water voles into two clades, with all captive individuals found in the English/Welsh clade. Moreover, captive water voles clustered closely with populations in the South East and East of England. The mitochondrial genome provides a useful marker to study the phylogenetics of this rodent clade and in addition, our study provides support for the breeding program at Wildwood Trust and provides a framework for future conservation genetics studies in this species.
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7
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Jass CN, Mead JI, Swift SL. Late Quaternary Voles from Persistence Cave, Black Hills, South Dakota. WEST N AM NATURALIST 2020. [DOI: 10.3398/064.080.0409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
| | - Jim I. Mead
- Mammoth Site of Hot Springs, SD, Box 692, 1800 Hwy. 18 ByPass, Hot Springs, SD 57747
| | - Sandra L. Swift
- Mammoth Site of Hot Springs, SD, Box 692, 1800 Hwy. 18 ByPass, Hot Springs, SD 57747
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8
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Abramson NI, Golenishchev FN, Bodrov SY, Bondareva OV, Genelt-Yanovskiy EA, Petrova TV. Phylogenetic relationships and taxonomic position of genus Hyperacrius (Rodentia: Arvicolinae) from Kashmir based on evidences from analysis of mitochondrial genome and study of skull morphology. PeerJ 2020; 8:e10364. [PMID: 33240667 PMCID: PMC7680025 DOI: 10.7717/peerj.10364] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 10/24/2020] [Indexed: 11/24/2022] Open
Abstract
In this article, we present the nearly complete mitochondrial genome of the Subalpine Kashmir vole Hyperacrius fertilis (Arvicolinae, Cricetidae, Rodentia), assembled using data from Illumina next-generation sequencing (NGS) of the DNA from a century-old museum specimen. De novo assembly consisted of 16,341 bp and included all mitogenome protein-coding genes as well as 12S and 16S RNAs, tRNAs and D-loop. Using the alignment of protein-coding genes of 14 previously published Arvicolini tribe mitogenomes, seven Clethrionomyini mitogenomes, and also Ondatra and Dicrostonyx outgroups, we conducted phylogenetic reconstructions based on a dataset of 13 protein-coding genes (PCGs) under maximum likelihood and Bayesian inference. Phylogenetic analyses robustly supported the phylogenetic position of this species within the tribe Arvicolini. Among the Arvicolini, Hyperacrius represents one of the early-diverged lineages. This result of phylogenetic analysis altered the conventional view on phylogenetic relatedness between Hyperacrius and Alticola and prompted the revision of morphological characters underlying the former assumption. Morphological analysis performed here confirmed molecular data and provided additional evidence for taxonomic replacement of the genus Hyperacrius from the tribe Clethrionomyini to the tribe Arvicolini.
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Affiliation(s)
- Natalia I. Abramson
- Department of Molecular Systematics, Zoological Institute Russian Academy of Sciences, Saint-Petersburg, Russian Federation
| | - Fedor N. Golenishchev
- Department of Mammals, Zoological Institute Russian Academy of Sciences, Saint-Petersburg, Russian Federation
| | - Semen Yu. Bodrov
- Department of Molecular Systematics, Zoological Institute Russian Academy of Sciences, Saint-Petersburg, Russian Federation
| | - Olga V. Bondareva
- Department of Molecular Systematics, Zoological Institute Russian Academy of Sciences, Saint-Petersburg, Russian Federation
| | - Evgeny A. Genelt-Yanovskiy
- Department of Molecular Systematics, Zoological Institute Russian Academy of Sciences, Saint-Petersburg, Russian Federation
| | - Tatyana V. Petrova
- Department of Molecular Systematics, Zoological Institute Russian Academy of Sciences, Saint-Petersburg, Russian Federation
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9
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Whole mitochondrial genome of long-clawed mole vole (Prometheomys schaposchnikowi) from Turkey, with its phylogenetic relationships. Genomics 2020; 112:3247-3255. [PMID: 32512144 DOI: 10.1016/j.ygeno.2020.06.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 05/27/2020] [Accepted: 06/03/2020] [Indexed: 11/21/2022]
Abstract
The mitogenome of Prometheomys schaposchnikowi was characterized for the first time as a circular DNA molecule (16.284 bp), containing 37 coding and 2 non-coding regions. In the mitogenome, ND6 and 8 tRNA genes were encoded on the light chain, while 12 PCGs, 14 tRNAs, 2 rRNAs, D-loop and OL were encoded on the heavy chain. The most common initiation codon in PCGs was ATG. As in many mammals, incomplete stop codons in P. schaposchnikowi were in the COX3, ND1 and ND4. Phylogenetic relationships were revealed using Bayesian method and the 13 PCGs. Seven genera (Arvicola, Dicrostonyx, Lasiopodomys, Myodes, Ondatra, Proedromys and Prometheomys) formed a monophyletic group, while Eothenomys, Microtus and Neodon were paraphyletic. P. schaposchnikowi constituted the most basal group within Arvicolinae. Divergence time estimation suggested that P. schaposchnikowi diversified during the Miocene (16.28 Mya). Further molecular studies are needed to test the distinctiveness and diversity of the genus Prometheomys.
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10
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Evolutionary history of water voles revisited: confronting a new phylogenetic model from molecular data with the fossil record. MAMMALIA 2020. [DOI: 10.1515/mammalia-2018-0178] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
AbstractRecent water voles (genus Arvicola) display a prominent morphological diversity with a strong ecotypical background but with unclear taxonomic associations. We provide a novel synthetic view on the evolutionary history and the current taxonomic richness in the genus. Our molecular reconstruction, based on a 1143-bp-long sequence of cytochrome b and a 926-bp interphotoreceptor retinoid binding protein (irbp) confirmed the monophyly of four species (amphibius, sapidus, monticola and italicus) recognized thus far, and retrieved a new deeply divergent lineage from West Iran. Genetic divergence of the Iranian lineage (>9.0%) is inside the range of interspecies distances, exceeding the interspecies divergences between the remaining Arvicola species (range, 4.3–8.7%). The oldest name available for the Iranian phylogroup is Arvicola persicus de Filippi, 1865, with the type locality in Soltaniyeh, Iran. The molecular clock suggests the divergence of A. persicus in the Early Pleistocene (2.545 Ma), and the current radiation of the remaining species between 1.535 Ma (Arvicola sapidus) and 0.671 Ma. While A. sapidus possibly evolved from Arvicola jacobaeus, a fossil ancestor to A. persicus is unknown. The aquatic life-style of Mimomys savini, a direct ancestor to some fossil Arvicola, is retained in recent stem species A. sapidus and A. persicus, while a major shift toward fossorial morphotype characterizes the terminal lineages (amphibius, italicus and monticola). We suggest that habitat-dependent morphological plasticity and positive enamel differentiation in Arvicola amphibius widened its ecological niche that might trigger a range expansion across c. 12 million km2, making it one of the largest among arvicolines.
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Thanou E, Paragamian K, Lymberakis P. Social but lonely: Species delimitation of social voles and the evolutionary history of the only
Microtus
species living in Africa. J ZOOL SYST EVOL RES 2020. [DOI: 10.1111/jzs.12325] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Evanthia Thanou
- Department of Biology, Section of Animal Biology University of Patra Patra Greece
- Department of Biology University of Washington Seattle Washington USA
- The Molecular Ecology Backshop Loutraki Greece
| | | | - Petros Lymberakis
- Natural History Museum of Crete, University of Crete Irakleio Greece
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12
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Identification of potential chemosignals in the European water vole Arvicola terrestris. Sci Rep 2019; 9:18378. [PMID: 31804568 PMCID: PMC6895148 DOI: 10.1038/s41598-019-54935-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Accepted: 11/21/2019] [Indexed: 11/13/2022] Open
Abstract
The water vole Arvicola terrestris is endemic to Europe where its outbreak generates severe economic losses for farmers. Our project aimed at characterising putative chemical signals used by this species, to develop new sustainable methods for population control that could also be used for this species protection in Great Britain. The water vole, as well as other rodents, uses specific urination sites as territorial and sex pheromone markers, still unidentified. Lateral scent glands and urine samples were collected from wild males and females caught in the field, at different periods of the year. Their volatile composition was analysed for each individual and not on pooled samples, revealing a specific profile of flank glands in October and a specific profile of urinary volatiles in July. The urinary protein content appeared more contrasted as males secrete higher levels of a lipocalin than females, whenever the trapping period. We named this protein arvicolin. Male and female liver transcript sequencing did not identify any expression of other odorant-binding protein sequence. This work demonstrates that even in absence of genome, identification of chemical signals from wild animals is possible and could be helpful in strategies of species control and protection.
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13
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Complete mitochondrial genomes confirm the generic placement of the plateau vole, Neodon fuscus. Biosci Rep 2019; 39:BSR20182349. [PMID: 31262975 PMCID: PMC6689105 DOI: 10.1042/bsr20182349] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 05/25/2019] [Accepted: 05/31/2019] [Indexed: 11/22/2022] Open
Abstract
The plateau vole, Neodon fuscus is endemic to China and is distributed mainly in Qinghai Province. It is of public health interest, as it is, a potential reservoir of Toxoplasma gondii and the intermediate host of Echinococcus multilocularis. However, genetic data of this species are lacking, and its name and taxonomy are still a controversy. In the present study, we determined the nucleotide sequence of the entire mitochondrial (mt) genome of N. fuscus and analyzed its evolutionary relationship. The mitogenome was 16328 bp in length and contained 13 protein-coding genes, 22 genes for transfer RNAs (tRNA), two ribosomal RNA genes and two major noncoding regions (OL region and D-loop region). Most genes were located on the heavy strand. All tRNA genes had typical cloverleaf structures except for tRNASer (GCU). The mt genome of N. fuscus was rich in A+T (58.45%). Maximum likelihood (ML) and Bayesian methods yielded phylogenetic trees from 33 mt genomes of Arvicolinae, in which N. fuscus formed a sister group with Neodon irene and Neodon sikimensis to the exclusion of species of Microtus and other members of the Arvicolinae. Further phylogenetic analyses (ML only) based on the cytb gene sequences also demonstrated that N. fuscus had a close relationship with N. irene. The complete mitochondrial genome was successfully assembled and annotated, providing the necessary information for the phylogenetic analyses. Although the name Lasiopodomys fuscus was used in the book ‘Wilson & Reeder’s Mammal Species of the World’, we have confirmed here that its appropriate name is N. fuscus through an analysis of the evolutionary relationships.
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Further assessment of the Genus Neodon and the description of a new species from Nepal. PLoS One 2019; 14:e0219157. [PMID: 31314770 PMCID: PMC6636723 DOI: 10.1371/journal.pone.0219157] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Accepted: 06/14/2019] [Indexed: 11/19/2022] Open
Abstract
Recent molecular systematic studies of arvicoline voles of the genera Neodon, Lasiopodomys, Phaiomys, and Microtus from Central Asia suggest the inclusion of Phaiomys leucurus, Microtus clarkei, and Lasiopodomys fuscus into Neodon and moving Neodon juldaschi into Microtus (Blanfordimys). In addition, three new species of Neodon (N. linzhiensis, N. medogensis, and N. nyalamensis) have recently been described from Tibet. Analyses of concatenated mitochondrial (Cytb, COI) and nuclear (Ghr, Rbp3) genes recovered Neodon as a well-supported monophyletic clade including all the recently described and relocated species. Kimura-2-parameter distance between Neodon from western Nepal compared to N. sikimensis (K2P = 13.1) and N. irene (K2P = 13.4) was equivalent to genetic distances observed between recognized species of this genus. The specimens sampled from western Nepal were recovered sister to N. sikimensis in the concatenated analysis. However, analyses conducted exclusively with mitochondrial loci did not support this relationship. The occlusal patterns of the first lower (m1) and third upper (M3) molars were simpler in specimens from western Nepal in comparison to N. sikimensis from eastern Nepal and India. Twelve craniodental characters and four external field measurements were examined from specimens of N. sikimensis from eastern Nepal and India, N. irene, and Neodon from western Nepal. Neodon from western Nepal were significantly different from N. sikimensis from eastern Nepal and India in ten out of 16 characters measured and from N. irene for all characters except ear height. Specimens from western Nepal were smaller in size than N. sikimensis from Eastern Nepal and India and larger than N. irene. Together the results of the molecular and morphological analyses indicate that Neodon from western Nepal are distinct under the phylogenetic, genetic and morpho species concepts.
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15
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Bell CJ, Jass CN, Burroughs RW. Dental Variation in a Collection of Lemmiscus curtatus from the Northern Plains of Southern Saskatchewan: Implications for Morphological Evolution. WEST N AM NATURALIST 2019. [DOI: 10.3398/064.079.0208] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Christopher J. Bell
- Jackson School of Geosciences, The University of Texas at Austin, Austin, TX 78712
| | | | - Robert W. Burroughs
- Committee on Evolutionary Biology, The University of Chicago, Chicago, IL 60637
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16
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Calamari ZT, Kuang-Hsien Hu J, Klein OD. Tissue Mechanical Forces and Evolutionary Developmental Changes Act Through Space and Time to Shape Tooth Morphology and Function. Bioessays 2018; 40:e1800140. [PMID: 30387177 PMCID: PMC6516060 DOI: 10.1002/bies.201800140] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Revised: 10/06/2018] [Indexed: 12/24/2022]
Abstract
Efforts from diverse disciplines, including evolutionary studies and biomechanical experiments, have yielded new insights into the genetic, signaling, and mechanical control of tooth formation and functions. Evidence from fossils and non-model organisms has revealed that a common set of genes underlie tooth-forming potential of epithelia, and changes in signaling environments subsequently result in specialized dentitions, maintenance of dental stem cells, and other phenotypic adaptations. In addition to chemical signaling, tissue forces generated through epithelial contraction, differential growth, and skeletal constraints act in parallel to shape the tooth throughout development. Here recent advances in understanding dental development from these studies are reviewed and important gaps that can be filled through continued application of evolutionary and biomechanical approaches are discussed.
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Affiliation(s)
- Zachary T. Calamari
- Department of Natural Sciences, Baruch College, City University of New York, New York City, New York, 10010, USA
- Department of Orofacial Sciences and Program in Craniofacial Biology, University of California, San Francisco, San Francisco, California, 94143, USA
| | - Jimmy Kuang-Hsien Hu
- Department of Orofacial Sciences and Program in Craniofacial Biology, University of California, San Francisco, San Francisco, California, 94143, USA
| | - Ophir D. Klein
- Department of Orofacial Sciences and Program in Craniofacial Biology, University of California, San Francisco, San Francisco, California, 94143, USA
- Department of Pediatrics and Institute for Human Genetics, University of California, San Francisco, San Francisco, California, 94143, USA
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17
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The Microtus voles: Resolving the phylogeny of one of the most speciose mammalian genera using genomics. Mol Phylogenet Evol 2018; 125:85-92. [PMID: 29574272 DOI: 10.1016/j.ympev.2018.03.017] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 01/03/2018] [Accepted: 03/14/2018] [Indexed: 11/24/2022]
Abstract
Sequential rapid radiations pose some of the greatest difficulties in phylogenetics, especially when analysing only a small number of genetic markers. Given that most of the speciation events occur in quick succession at various points in time, this creates particular challenges in determining phylogenetic relationships, i.e. branching order and divergence times. With the development of high throughput sequencing, thousands of markers can now readily be used to tackle these issues. Microtus is a speciose genus currently composed of 65 species that evolved over the last 2 million years. Although it is a well-studied group, there is still phylogenetic uncertainty at various divergence levels. Building upon previous studies that generally used small numbers of mitochondrial and/or nuclear loci, in this genomic-scale study we used both mitochondrial and nuclear data to study the rapid radiation within Microtus, using partial mitogenomes and genotyping-by-sequencing (GBS) on seven species representing five Microtus subgenera and the main biogeographic ranges where this group occurs. Both types of genome (mitochondrial and nuclear) generated similar tree topologies, with a basal split of the Nearctic (M. ochrogaster) and Holarctic (M. oeconomus) species, and then a subdivision of the five Palearctic species into two subgroups. These data support the occurrence of two European radiations, one North American radiation, and a later expansion of M. oeconomus from Asia to both Europe and North America. We further resolved the positioning of M. cabrerae as sister group of M. agrestis and refute the claim that M. cabrerae should be elevated to its own genus (Iberomys). Finally, the data support ongoing speciation events, especially within M. agrestis, with high levels of genetic divergence between the three Evolutionarily Significant Units (ESUs) previously identified. Similar high levels of divergence were also found among ESUs within M. oeconomus and M. arvalis.
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18
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Alireza M, Morteza N, Reza RH, Mohammad K. Population Genetic Structure of Transcaucasian Mole Vole (Ellobius lutescens) Along Zagros Mountains, Iran. CONTEMP PROBL ECOL+ 2018. [DOI: 10.1134/s1995425518020075] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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19
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Steppan SJ, Schenk JJ. Muroid rodent phylogenetics: 900-species tree reveals increasing diversification rates. PLoS One 2017; 12:e0183070. [PMID: 28813483 PMCID: PMC5559066 DOI: 10.1371/journal.pone.0183070] [Citation(s) in RCA: 180] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 07/29/2017] [Indexed: 11/18/2022] Open
Abstract
We combined new sequence data for more than 300 muroid rodent species with our previously published sequences for up to five nuclear and one mitochondrial genes to generate the most widely and densely sampled hypothesis of evolutionary relationships across Muroidea. An exhaustive screening procedure for publically available sequences was implemented to avoid the propagation of taxonomic errors that are common to supermatrix studies. The combined data set of carefully screened sequences derived from all available sequences on GenBank with our new data resulted in a robust maximum likelihood phylogeny for 900 of the approximately 1,620 muroids. Several regions that were equivocally resolved in previous studies are now more decisively resolved, and we estimated a chronogram using 28 fossil calibrations for the most integrated age and topological estimates to date. The results were used to update muroid classification and highlight questions needing additional data. We also compared the results of multigene supermatrix studies like this one with the principal published supertrees and concluded that the latter are unreliable for any comparative study in muroids. In addition, we explored diversification patterns as an explanation for why muroid rodents represent one of the most species-rich groups of mammals by detecting evidence for increasing net diversification rates through time across the muroid tree. We suggest the observation of increasing rates may be due to a combination of parallel increases in rate across clades and high average extinction rates. Five increased diversification-rate-shifts were inferred, suggesting that multiple, but perhaps not independent, events have led to the remarkable species diversity in the superfamily. Our results provide a phylogenetic framework for comparative studies that is not highly dependent upon the signal from any one gene.
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Affiliation(s)
- Scott J. Steppan
- Department of Biological Science, Florida State University, Tallahassee, Florida, United States of America
| | - John J. Schenk
- Department of Biological Science, Florida State University, Tallahassee, Florida, United States of America
- Department of Biology, Georgia Southern University, Statesboro, Georgia, United States of America
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20
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Novikov E, Zadubrovskaya I, Zadubrovskiy P, Titova T. Reproduction, ageing, and longevity in two species of laboratory rodents with different life histories. Biogerontology 2017; 18:803-809. [PMID: 28741183 DOI: 10.1007/s10522-017-9723-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Accepted: 07/19/2017] [Indexed: 11/25/2022]
Abstract
Social subterranean rodents of the Bathyergidae family are known to have extended longevity and some signs of negligible senescence, although the manifestation of these traits depends on the reproductive status of individuals. Such enormous life history peculiarities are usually explained by the specificity of a subterranean way of life. If so, all subterranean rodents, regardless of their taxonomic position, are expected to have higher maximum lifespans and shorter senescence periods than the related above-ground species. In this study we compared the mortality rates and age-related reproductive activity and physical conditions in two sympatric rodents of the Cricetidae family: subterranean mole voles and above-ground dwarf hamsters. Mole voles have a maximum lifespan that is as high as two times the maximum lifespan of the dwarf hamsters; however, only a few mole voles outlasted the maximum lifespan of dwarf hamsters. Dwarf hamsters were generally more fecund than mole voles, which manifests both in a higher number of litters and larger litter sizes. Neither species demonstrated a significant age-related decline in litter size or muscle strength, although there were negative trends for dwarf hamsters. We conclude that some evidence of extended longevity and slow ageing do occur in mole voles, but due to the relatively short "subterranean" phylogenetic history of the species, this evidence is not as pronounced as in the social species of Bathyergidae family.
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Affiliation(s)
- Eugene Novikov
- Institute of Systematics and Ecology of Animals, Siberian Branch of the Russian Academy of Sciences, Frunze Street 11, Novosibirsk, Russia, 630091.
- Department of Ecology, Novosibirsk State Agrarian University, Dobrolubov Street, 160, Novosibirsk, Russia, 630039.
| | - I Zadubrovskaya
- Institute of Systematics and Ecology of Animals, Siberian Branch of the Russian Academy of Sciences, Frunze Street 11, Novosibirsk, Russia, 630091
| | - P Zadubrovskiy
- Institute of Systematics and Ecology of Animals, Siberian Branch of the Russian Academy of Sciences, Frunze Street 11, Novosibirsk, Russia, 630091
| | - T Titova
- Institute of Systematics and Ecology of Animals, Siberian Branch of the Russian Academy of Sciences, Frunze Street 11, Novosibirsk, Russia, 630091
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21
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Rekovets LI, Kovalchuk OM. Phenomenon in the Evolution of Voles (Mammalia, Rodentia, Arvicolidae). VESTNIK ZOOLOGII 2017. [DOI: 10.1515/vzoo-2017-0015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
This paper presents analytical results of the study of adaptatiogenesis within the family Arvicolidae (Mammalia, Rodentia) based of morphological changes of the most functional characters of their masticatory apparatus — dental system — through time. The main directions of the morphological differentiation in parallel evolution of the arvicolid tooth type within the Cricetidae and Arvicolidae during late Miocene and Pliocene were identified and substantiated. It is shown that such unique morphological structure as the arvicolid tooth type has provided a relatively high rate of evolution of voles and a wide range of their adaptive radiation, as well as has determined their taxonomic and ecological diversity. The optimality of the current state of this group and evaluation of evolutionary prospects of Arvicolidae were presented and substantiated here as a phenomenon in their evolution.
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22
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Liu S, Jin W, Liu Y, Murphy RW, Lv B, Hao H, Liao R, Sun Z, Tang M, Chen W, Fu J. Taxonomic position of Chinese voles of the tribe Arvicolini and the description of 2 new species from Xizang, China. J Mammal 2017; 98:166-182. [PMID: 29674783 PMCID: PMC5901085 DOI: 10.1093/jmammal/gyw170] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Accepted: 09/10/2016] [Indexed: 11/22/2022] Open
Abstract
China has 26 species in the tribe Arvicolini. The taxonomic status of these voles remains controversial despite much effort. Herein, we evaluate the taxonomic position of 22 species plus 2 unidentified taxa using mitochondrial DNA gene sequences (cytb + CO1). We also evaluate 18 species and 2 unidentified taxa using morphological data. Phylogenetic analyses of cytb resolve monophyly for the genera Alexandromys, Lasiopodomys, Microtus, Neodon, Proedromys, and Volemys with strong support. Stenocranius clusters with Chionomys but with very weak support. Analyses of concatenated cytb + CO1 resolve the same genera with strong support, but the topology of the tree differs from that of cytb in that Chionomys roots at the base of the tree independent of Stenocranius, which forms the sister-group of Lasiopodomys in a more terminal position. The matrilineal genealogy excludes the type species Arvicola amphibius from the rest of the Arvicolini. This species forms the sister-group of Ondatra with high support. Neodon includes N. irene, N. linzhiensis, N. fuscus, N. leucurus, N. sikimensis, Microtus clarkei, and 2 unidentified specimens. Alexandromys includes the former species Microtus oeconomus, M. kikuchii, M. limnophilus, M. fortis, and M. maximowiczii. Finally, Microtus has the subgenera Blanfordimys, Microtus, Mynomes, Pedomys, Pitymys, and Terricola, which includes the Chinese species M. agrestis, M. arvalis, and Blanfordimys juldaschi. General mixed Yule-coalescent species delimitation modeling demarcates 6 currently recognized species and 2 new species of Neodon. A principal component analysis of the morphological data among 7 matrilines shows that all variables have positive loadings of high magnitude on the 1st component. Canonical discriminant analysis for Neodon (including M. clarkei and 2 unidentified species) correctly classifies 93.0% of specimens. Overall, our analyses support the recognition of Alexandromys, Lasiopodomys, Microtus, Neodon, Proedromys, and Volemys as genera. Stenocranius includes Microtus gregalis, and the genealogical position of Stenocranius remains uncertain. The status of Arvicola requires further study. We assign M. clarkei to Neodon and describe 2 new species of Neodon.
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Affiliation(s)
- Shaoying Liu
- Sichuan Academy of Forestry, No. 18, Xinghui Xilu Road, Chengdu 610081, Sichuan, China (SL, WJ, YL, RL, ZS, MT, JF)
| | - Wei Jin
- Centre for Biodiversity and Conservation Biology, Royal Ontario Museum, 100 Queen's Park, Toronto, Ontario M5S 2C6, Canada (RWM)
| | - Yang Liu
- Chengdu Biology Institute of Chinese Academy of Science, Chengdu 610041, Sichuan, China (LB)
| | - Robert W Murphy
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China (HH)
| | - Bin Lv
- Guangxi Natural History Museum, Nanning, Guangxi 530012, China (WC)
| | - Haibang Hao
- Sichuan Academy of Forestry, No. 18, Xinghui Xilu Road, Chengdu 610081, Sichuan, China (SL, WJ, YL, RL, ZS, MT, JF)
| | - Rui Liao
- Sichuan Academy of Forestry, No. 18, Xinghui Xilu Road, Chengdu 610081, Sichuan, China (SL, WJ, YL, RL, ZS, MT, JF)
| | - Zhiyu Sun
- Sichuan Academy of Forestry, No. 18, Xinghui Xilu Road, Chengdu 610081, Sichuan, China (SL, WJ, YL, RL, ZS, MT, JF)
| | - Mingkun Tang
- Sichuan Academy of Forestry, No. 18, Xinghui Xilu Road, Chengdu 610081, Sichuan, China (SL, WJ, YL, RL, ZS, MT, JF)
| | - Weicai Chen
- Sichuan Academy of Forestry, No. 18, Xinghui Xilu Road, Chengdu 610081, Sichuan, China (SL, WJ, YL, RL, ZS, MT, JF)
| | - Jianrong Fu
- Sichuan Academy of Forestry, No. 18, Xinghui Xilu Road, Chengdu 610081, Sichuan, China (SL, WJ, YL, RL, ZS, MT, JF)
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23
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Tougard C. Did the Quaternary climatic fluctuations really influence the tempo and mode of diversification in European rodents? J ZOOL SYST EVOL RES 2016. [DOI: 10.1111/jzs.12152] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Christelle Tougard
- Institut des Sciences de l'Evolution de Montpellier; UMR CNRS-UM-EPHE 5554, IRD 226 and CIRAD 117; Université de Montpellier; Eugéne Bataillon, CC065 34095 Montpellier Cedex 05 France
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24
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Sequence and phylogenetic analysis of the complete mitochondrial genome of Lasiopodomys mandarinus mandarinus (Arvicolinae, Rodentia). Gene 2016; 593:302-7. [DOI: 10.1016/j.gene.2016.08.035] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Revised: 06/27/2016] [Accepted: 08/20/2016] [Indexed: 11/19/2022]
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25
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Variations in Microtus arvalis and Microtus agrestis (Arvicolinae, Rodentia) Dental Morphologies in an Archaeological Context: the Case of Teixoneres Cave (Late Pleistocene, North-Eastern Iberia). J MAMM EVOL 2016. [DOI: 10.1007/s10914-016-9355-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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26
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Genetic instability and aging under the scrutiny of comparative biology: a meta-analysis of spontaneous micronuclei frequency. Mech Ageing Dev 2016; 156:34-41. [DOI: 10.1016/j.mad.2016.04.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Revised: 03/08/2016] [Accepted: 04/10/2016] [Indexed: 12/17/2022]
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27
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Lv X, Xia L, Ge D, Wu Y, Yang Q. Climatic niche conservatism and ecological opportunity in the explosive radiation of arvicoline rodents (Arvicolinae, Cricetidae). Evolution 2016; 70:1094-104. [DOI: 10.1111/evo.12919] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2015] [Revised: 03/08/2016] [Accepted: 03/27/2016] [Indexed: 02/06/2023]
Affiliation(s)
- Xue Lv
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology; Chinese Academy of Sciences; Beijing 100101 PR China
- College of Life Science; University of Chinese Academy of Sciences; Beijing 100049 PR China
| | - Lin Xia
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology; Chinese Academy of Sciences; Beijing 100101 PR China
| | - Deyan Ge
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology; Chinese Academy of Sciences; Beijing 100101 PR China
| | - Yongjie Wu
- Key Laboratory of Bio-resources and Eco-environment (Ministry of Education); College of Life Sciences, Sichuan University; Chengdu Sichuan 610064 China
| | - Qisen Yang
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology; Chinese Academy of Sciences; Beijing 100101 PR China
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28
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Calandra I, Labonne G, Mathieu O, Henttonen H, Lévêque J, Milloux MJ, Renvoisé É, Montuire S, Navarro N. Isotopic partitioning by small mammals in the subnivium. Ecol Evol 2015; 5:4132-40. [PMID: 26445663 PMCID: PMC4588660 DOI: 10.1002/ece3.1653] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Revised: 07/13/2015] [Accepted: 07/25/2015] [Indexed: 01/24/2023] Open
Abstract
In the Arctic, food limitation is one of the driving factors behind small mammal population fluctuations. Active throughout the year, voles and lemmings (arvicoline rodents) are central prey in arctic food webs. Snow cover, however, makes the estimation of their winter diet challenging. We analyzed the isotopic composition of ever‐growing incisors from species of voles and lemmings in northern Finland trapped in the spring and autumn. We found that resources appear to be reasonably partitioned and largely congruent with phylogeny. Our results reveal that winter resource use can be inferred from the tooth isotopic composition of rodents sampled in the spring, when trapping can be conducted, and that resources appear to be partitioned via competition under the snow.
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Affiliation(s)
- Ivan Calandra
- GEGENAA - EA 3795 Université de Reims Champagne-Ardenne Reims France
| | - Gaëlle Labonne
- Laboratoire PALEVO École Pratique des Hautes Études Dijon France ; Biogéosciences - UMR uB/CNRS 6282 Université Bourgogne Franche-Comté Dijon France
| | - Olivier Mathieu
- Biogéosciences - UMR uB/CNRS 6282 Université Bourgogne Franche-Comté Dijon France
| | | | - Jean Lévêque
- Biogéosciences - UMR uB/CNRS 6282 Université Bourgogne Franche-Comté Dijon France
| | - Marie-Jeanne Milloux
- Biogéosciences - UMR uB/CNRS 6282 Université Bourgogne Franche-Comté Dijon France
| | - Élodie Renvoisé
- Evo-Devo Lab Institute of Biotechnology University of Helsinki Helsinki Finland
| | - Sophie Montuire
- Laboratoire PALEVO École Pratique des Hautes Études Dijon France ; Biogéosciences - UMR uB/CNRS 6282 Université Bourgogne Franche-Comté Dijon France
| | - Nicolas Navarro
- Laboratoire PALEVO École Pratique des Hautes Études Dijon France ; Biogéosciences - UMR uB/CNRS 6282 Université Bourgogne Franche-Comté Dijon France
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29
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Haukisalmi V, Hardman LM, Fedorov VB, Hoberg EP, Henttonen H. Molecular systematics and
H
olarctic phylogeography of cestodes of the genus
A
noplocephaloides
Baer, 1923 s. s. (
C
yclophyllidea,
A
noplocephalidae) in lemmings (
L
emmus
,
S
ynaptomys
). ZOOL SCR 2015. [DOI: 10.1111/zsc.12136] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Voitto Haukisalmi
- Finnish Museum of Natural History Luomus University of Helsinki P. Rautatiekatu 13 00014 Helsinki Finland
| | | | - Vadim B. Fedorov
- Institute of Arctic Biology University of Alaska Fairbanks AK 99775 USA
| | - Eric P. Hoberg
- Animal Parasitic Diseases Laboratory USDA ARS BARC East 1180 10300 Baltimore Avenue Beltsville MD 20715 USA
| | - Heikki Henttonen
- Natural Resources Institute Finland (Luke) Jokiniemenkuja 1 01370 Vantaa Finland
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30
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Carleton MD, Gardner AL, Pavlinov IY, Musser GG. The valid generic name for red-backed voles (Muroidea: Cricetidae: Arvicolinae): restatement of the case forMyodesPallas, 1811. J Mammal 2014. [DOI: 10.1644/14-mamm-a-004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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31
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Li J, Zheng X, Cai Y, Zhang X, Yang M, Yue B, Li J. DNA barcoding of Murinae (Rodentia: Muridae) and Arvicolinae (Rodentia: Cricetidae) distributed in China. Mol Ecol Resour 2014; 15:153-67. [PMID: 24838015 DOI: 10.1111/1755-0998.12279] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Revised: 04/24/2014] [Accepted: 05/07/2014] [Indexed: 12/25/2022]
Abstract
Identification of rodents is very difficult mainly due to high similarities in morphology and controversial taxonomy. In this study, mitochondrial cytochrome oxidase subunit I (COI) was used as DNA barcode to identify the Murinae and Arvicolinae species distributed in China and to facilitate the systematics studies of Rodentia. In total, 242 sequences (31 species, 11 genera) from Murinae and 130 sequences (23 species, 6 genera) from Arvicolinae were investigated, of which 90 individuals were novel. Genetic distance, threshold method, tree-based method, online BLAST and BLOG were employed to analyse the data sets. There was no obvious barcode gap. The average K2P distance within species and genera was 2.10% and 12.61% in Murinae, and 2.86% and 11.80% in Arvicolinae, respectively. The optimal threshold was 5.62% for Murinae and 3.34% for Arvicolinae. All phylogenetic trees exhibited similar topology and could distinguish 90.32% of surveyed species in Murinae and 82.60% in Arvicolinae with high support values. BLAST analyses yielded similar results with identification success rates of 92.15% and 93.85% for Murinae and Arvicolinae, respectively. BLOG successfully authenticated 100% of detected species except Leopoldamys edwardsi based on the latest taxonomic revision. Our results support the species status of recently recognized Micromys erythrotis, Eothenomys tarquinius and E. hintoni and confirm the important roles of comprehensive taxonomy and accurate morphological identification in DNA barcoding studies. We believe that, when proper analytic methods are applied or combined, DNA barcoding could serve as an accurate and effective species identification approach for Murinae and Arvicolinae based on a proper taxonomic framework.
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Affiliation(s)
- Jing Li
- Key Laboratory of Bio-Resources and Eco-Environment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu, 610065, China
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32
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Kohli BA, Speer KA, Kilpatrick CW, Batsaikhan N, Damdinbazar D, Cook JA. Multilocus systematics and non-punctuated evolution of Holarctic Myodini (Rodentia: Arvicolinae). Mol Phylogenet Evol 2014; 76:18-29. [PMID: 24594062 DOI: 10.1016/j.ympev.2014.02.019] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2013] [Revised: 02/06/2014] [Accepted: 02/18/2014] [Indexed: 11/17/2022]
Abstract
The tribe Myodini consists of five genera of forest and alpine voles (Alticola, Caryomys, Eothenomys, Hyperacrius and Myodes) distributed throughout the Holarctic. Because mitochondrial evidence has revealed paraphyly and polyphyly among genera, we apply the first multilocus tests to clarify taxonomy and phylogenetic relationships. Our analyses of 28 of 36 species within Myodini, including three not previously sequenced (A. montosa, A. albicaudus, and H. fertilis), identify four distinct clades and provide the first molecular evidence that Hyperacrius may not belong in Myodini. Myodes is paraphyletic, while polyphyly of Alticola reflects apparent ancient mitochondrial introgression. Diversification in this tribe was hypothesized to be tightly linked to Late Cenozoic climatic events, however, lineage through time analysis indicates diversification over the last 4 My was gradual and not strongly punctuated.
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Affiliation(s)
- Brooks A Kohli
- Department of Biology and Museum of Southwestern Biology, University of New Mexico, Albuquerque, NM 87131-1051, USA.
| | - Kelly A Speer
- Department of Biology and Museum of Southwestern Biology, University of New Mexico, Albuquerque, NM 87131-1051, USA
| | | | - Nyamsuren Batsaikhan
- Department of Zoology, Faculty of Biology, National University of Mongolia, Ulaan Bataar, Mongolia
| | - Darmaa Damdinbazar
- Department of Zoology, Faculty of Biology, National University of Mongolia, Ulaan Bataar, Mongolia
| | - Joseph A Cook
- Department of Biology and Museum of Southwestern Biology, University of New Mexico, Albuquerque, NM 87131-1051, USA
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33
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Tougard C, Montuire S, Volobouev V, Markova E, Contet J, Aniskin V, Quere JP. Exploring phylogeography and species limits in the Altai vole (Rodentia: Cricetidae). Biol J Linn Soc Lond 2013. [DOI: 10.1111/j.1095-8312.2012.02034.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Christelle Tougard
- UMR CNRS 5554 and UMR IRD 226; Institut des Sciences de l'Evolution de Montpellier; Université Montpellier II; Place Eugène Bataillon, CC065; 34095; Montpellier, Cedex 05; France
| | | | - Vitaly Volobouev
- UMR CNRS-MNHN 7205; Origine, Structure, Evolution de la Biodiversité; 55 rue Buffon; 75005; Paris; France
| | - Evgenia Markova
- Ural Division of the Russian Academy of Sciences; Institute of Plant and Animal Ecology; ul. 8 Marta; 202; Ekaterinburg; 620144; Russia
| | - Julien Contet
- UMR CNRS 6282 Biogéosciences; Université de Bourgogne; 6 Boulevard Gabriel; 21000; Dijon; France
| | - Vladimir Aniskin
- Severtsov Institute of Ecology and Evolution; Russian Academy of Sciences; Leninskii pr 33; 117071; Moscow; Russia
| | - Jean-Pierre Quere
- INRA, UMR CBGP (Inra/Ird/Cirad/Montpellier SupAgro); Campus international de Baillarguet, CS 30016; 34988; Montferrier-sur-Lez cedex; France
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34
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Dlugosz EM, Chappell MA, Meek TH, Szafrańska P, Zub K, Konarzewski M, Jones JH, Bicudo E, Nespolo RF, Careau V, Garland T. Phylogenetic analysis of mammalian maximal oxygen consumption during exercise. J Exp Biol 2013; 216:4712-21. [DOI: 10.1242/jeb.088914] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Summary
We compiled published values of mammalian maximum oxygen consumption during exercise (VO2max) and supplemented these data with new measurements of VO2max for the largest rodent (capybara), 20 species of smaller-bodied rodents, two species of weasels, and one small marsupial. Many of the new data were obtained with running-wheel respirometers instead of the treadmill systems used in most previous measurements of mammalian VO2max. We used both conventional and phylogenetically informed allometric regression models to analyze VO2max of 77 ‘species’ (including subspecies or separate populations within species) in relation to body size, phylogeny, diet, and measurement method. Both body mass and allometrically mass-corrected VO2max showed highly significant phylogenetic signal (i.e., related species tended to resemble each other). The Akaike Information Criterion corrected for sample size was used to compare 27 candidate models predicting VO2max (all of which included body mass). In addition to mass, the two best-fitting models (cumulative Akaike weight = 0.93) included dummy variables coding for three species previously shown to have high VO2max (pronghorn, horse, and a bat), and incorporated a transformation of the phylogenetic branch lengths under an Ornstein-Uhlenbeck model of residual variation (thus indicating phylogenetic signal in the residuals). We found no statistical difference between wheel- and treadmill-elicited values, and diet had no predictive ability for VO2max. Averaged across all models, the allometric scaling exponent was 0.839, with 95% confidence limits of 0.795 and 0.883, which does not provide support for a scaling exponent of 0.67, 0.75 or unity.
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Martínková N, Moravec J. Multilocus phylogeny of arvicoline voles (Arvicolini, Rodentia) shows small tree terrace size. FOLIA ZOOLOGICA 2012. [DOI: 10.25225/fozo.v61.i3.a10.2012] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Natália Martínková
- Institute of Vertebrate Biology, Academy of Sciences of the Czech Republic, v.v.i., Květná 8, 603 65 Brno, Czech Republic
- Institute of Biostatistics and Analyses, Masaryk University, Kamenice 3, 625 00 Brno, Czech Republic
| | - Jiří Moravec
- Institute of Biostatistics and Analyses, Masaryk University, Kamenice 3, 625 00 Brno, Czech Republic
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Variability in susceptibility of voles (Arvicolinae) to experimental infection with Cryptosporidium muris and Cryptosporidium andersoni. Parasitol Res 2012; 111:471-3. [PMID: 22302477 DOI: 10.1007/s00436-012-2821-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2011] [Accepted: 01/08/2012] [Indexed: 10/14/2022]
Abstract
The infectivity of Cryptosporidium muris and Cryptosporidium andersoni in various species of voles was studied using experimental infections. None of the experimental voles inoculated with 1 × 10(5) oocysts of Cryptosporidium spp. shed any oocysts during 40 DPI, except Brandt's vole (Lasiopodomys brandtii), which was susceptible to C. muris infection. Experiments confirmed the resistance of voles of the genus Microtus sensu stricto to infection with mammalian gastric cryptosporidia, which provides a new study model with prospects to more fully understand the processes involved in the phenomenon of host specificity of this group of protists.
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Liu S, Liu Y, Guo P, Sun Z, Murphy RW, Fan Z, Fu J, Zhang Y. Phylogeny of Oriental Voles (Rodentia: Muridae: Arvicolinae): Molecular and Morphological Evidence. Zoolog Sci 2012; 29:610-22. [DOI: 10.2108/zsj.29.610] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Shaoying Liu
- Sichuan Academy of Forestry, Chengdu, Sichuan 610066, China
| | - Yang Liu
- Sichuan Academy of Forestry, Chengdu, Sichuan 610066, China
| | - Peng Guo
- College of Life Sciences and Food Engineering, Yibin University, Yibin, Sichuan 644007, China
| | - Zhiyu Sun
- Sichuan Academy of Forestry, Chengdu, Sichuan 610066, China
| | - Robert W. Murphy
- Kunming Institute of Zoology, the Chinese Academy of Science, Kunming, Yunnan 650223, China
| | - Zhenxin Fan
- College of Life Sciences, Sichuan University, Chengdu, Sichuan 610051, China
| | - Jianrong Fu
- Sichuan Academy of Forestry, Chengdu, Sichuan 610066, China
| | - Yaping Zhang
- Kunming Institute of Zoology, the Chinese Academy of Science, Kunming, Yunnan 650223, China
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Yannic G, Burri R, Malikov VG, Vogel P. Systematics of snow voles (Chionomys, Arvicolinae) revisited. Mol Phylogenet Evol 2012; 62:806-15. [DOI: 10.1016/j.ympev.2011.12.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2011] [Revised: 11/24/2011] [Accepted: 12/03/2011] [Indexed: 10/14/2022]
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Amrein I, Isler K, Lipp HP. Comparing adult hippocampal neurogenesis in mammalian species and orders: influence of chronological age and life history stage. Eur J Neurosci 2012; 34:978-87. [PMID: 21929629 DOI: 10.1111/j.1460-9568.2011.07804.x] [Citation(s) in RCA: 134] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Adult hippocampal neurogenesis is a prominent event in rodents. In species with longer life expectancies, newly born cells in the adult dentate gyrus of the hippocampal formation are less abundant or can be completely absent. Several lines of evidence indicate that the regulatory mechanisms of adult neurogenesis differ between short- and long-lived mammals. After a critical appraisal of the factors and problems associated with comparing different species, we provide a quantitative comparison derived from seven laboratory strains of mice (BALB, C57BL/6, CD1, outbred) and rats (F344, Sprague-Dawley, Wistar), six other rodent species of which four are wild-derived (wood mouse, vole, spiny mouse and guinea pig), three non-human primate species (marmoset and two macaque species) and one carnivore (red fox). Normalizing the number of proliferating cells to total granule cell number, we observe an overall exponential decline in proliferation that is chronologically equal between species and orders and independent of early developmental processes and life span. Long- and short-lived mammals differ with regard to major life history stages; at the time points of weaning, age at first reproduction and average life expectancy, long-lived primates and foxes have significantly fewer proliferating cells than rodents. Although the database for neuronal differentiation is limited, we find indications that the extent of neuronal differentiation is subject to species-specific selective adaptations. We conclude that absolute age is the critical factor regulating cell genesis in the adult hippocampus of mammals. Ontogenetic and ecological factors primarily influence the regulation of neuronal differentiation rather than the rate of cell proliferation.
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Affiliation(s)
- Irmgard Amrein
- Institute of Anatomy, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland.
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Gómez Montoto L, Varea Sánchez M, Tourmente M, Martín-Coello J, Luque-Larena JJ, Gomendio M, Roldan ERS. Sperm competition differentially affects swimming velocity and size of spermatozoa from closely related muroid rodents: head first. Reproduction 2011; 142:819-30. [PMID: 21954130 DOI: 10.1530/rep-11-0232] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Sperm competition favours an increase in sperm swimming velocity that maximises the chances that sperm will reach the ova before rival sperm and fertilise. Comparative studies have shown that the increase in sperm swimming speed is associated with an increase in total sperm size. However, it is not known which are the first evolutionary steps that lead to increases in sperm swimming velocity. Using a group of closely related muroid rodents that differ in levels of sperm competition, we here test the hypothesis that subtle changes in sperm design may represent early evolutionary changes that could make sperm swim faster. Our findings show that as sperm competition increases so does sperm swimming speed. Sperm swimming velocity is associated with the size of all sperm components. However, levels of sperm competition are only related to an increase in sperm head area. Such increase is a consequence of an increase in the length of the sperm head, and also of the presence of an apical hook in some of the species studied. These findings suggest that the presence of a hook may modify the sperm head in such a way that would help sperm swim faster and may also be advantageous if sperm with larger heads are better able to attach to the epithelial cells lining the lower isthmus of the oviduct where sperm remain quiescent before the final race to reach the site of fertilisation.
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Affiliation(s)
- Laura Gómez Montoto
- Reproductive Ecology and Biology Group, Museo Nacional de Ciencias Naturales (CSIC), Madrid, Spain
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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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Gómez Montoto L, Magaña C, Tourmente M, Martín-Coello J, Crespo C, Luque-Larena JJ, Gomendio M, Roldan ERS. Sperm competition, sperm numbers and sperm quality in muroid rodents. PLoS One 2011; 6:e18173. [PMID: 21464956 PMCID: PMC3064651 DOI: 10.1371/journal.pone.0018173] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2010] [Accepted: 02/28/2011] [Indexed: 01/03/2023] Open
Abstract
Sperm competition favors increases in relative testes mass and production efficiency, and changes in sperm phenotype that result in faster swimming speeds. However, little is known about its effects on traits that contribute to determine the quality of a whole ejaculate (i.e., proportion of motile, viable, morphologically normal and acrosome intact sperm) and that are key determinants of fertilization success. Two competing hypotheses lead to alternative predictions: (a) sperm quantity and quality traits co-evolve under sperm competition because they play complementary roles in determining ejaculate's competitive ability, or (b) energetic constraints force trade-offs between traits depending on their relevance in providing a competitive advantage. We examined relationships between sperm competition levels, sperm quantity, and traits that determine ejaculate quality, in a comparative study of 18 rodent species using phylogenetically controlled analyses. Total sperm numbers were positively correlated to proportions of normal sperm, acrosome integrity and motile sperm; the latter three were also significantly related among themselves, suggesting no trade-offs between traits. In addition, testes mass corrected for body mass (i.e., relative testes mass), showed a strong association with sperm numbers, and positive significant associations with all sperm traits that determine ejaculate quality with the exception of live sperm. An "overall sperm quality" parameter obtained by principal component analysis (which explained 85% of the variance) was more strongly associated with relative testes mass than any individual quality trait. Overall sperm quality was as strongly associated with relative testes mass as sperm numbers. Thus, sperm quality traits improve under sperm competition in an integrated manner suggesting that a combination of all traits is what makes ejaculates more competitive. In evolutionary terms this implies that a complex network of genetic and developmental pathways underlying processes of sperm formation, maturation, transport in the female reproductive tract, and preparation for fertilization must all evolve in concert.
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Affiliation(s)
- Laura Gómez Montoto
- Reproductive Ecology and Biology Group, Museo Nacional de Ciencias Naturales (CSIC), Madrid, Spain
| | - Concepción Magaña
- Reproductive Ecology and Biology Group, Museo Nacional de Ciencias Naturales (CSIC), Madrid, Spain
| | - Maximiliano Tourmente
- Reproductive Ecology and Biology Group, Museo Nacional de Ciencias Naturales (CSIC), Madrid, Spain
| | - Juan Martín-Coello
- Reproductive Ecology and Biology Group, Museo Nacional de Ciencias Naturales (CSIC), Madrid, Spain
| | - Cristina Crespo
- Reproductive Ecology and Biology Group, Museo Nacional de Ciencias Naturales (CSIC), Madrid, Spain
| | - Juan José Luque-Larena
- Área de Zoología, Departamento de Ciencias Agroforestales, E.T.S. Ingenierías Agrarias, Universidad de Valladolid, Campus La Yutera, Palencia, Spain
| | - Montserrat Gomendio
- Reproductive Ecology and Biology Group, Museo Nacional de Ciencias Naturales (CSIC), Madrid, Spain
| | - Eduardo R. S. Roldan
- Reproductive Ecology and Biology Group, Museo Nacional de Ciencias Naturales (CSIC), Madrid, Spain
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Haupt M, Eccard JA, Winter Y. Does spatial learning ability of common voles (Microtus arvalis) and bank voles (Myodes glareolus) constrain foraging efficiency? Anim Cogn 2010; 13:783-91. [PMID: 20596739 DOI: 10.1007/s10071-010-0327-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2009] [Revised: 05/14/2010] [Accepted: 05/18/2010] [Indexed: 11/30/2022]
Abstract
Place learning abilities represent adaptations that contribute also to foraging efficiency under given spatio-temporal conditions. We investigated if this ability in turn constrains decision making in two sympatric vole species: while the herbivorous common vole (Microtus arvalis) feeds on spatio-temporally predictable food resources (e.g. roots, tubers and shoots of plant tubers), the omnivorous bank vole (Myodes glareolus) additionally subsists on temporally unpredictable food resources (e.g. insects and seeds). Here, we compare the spatial reference memory and working memory of the two species. In an automated operant home cage with eight water places, female voles either had to learn the fixed position of non-depletable places (reference memory task) or learn and avoid previously visited water places depleted in a single visit (win-shift task). In the reference memory task, Microtus females required significantly more choices to find all water places, initially performed slightly worse than Myodes females, and displayed slightly lower asymptotic performance. Both species were highly similar in new learning of the same task. In the more complex win-shift task, asymptotic performance was significantly lower in Microtus (72% correct) than in Myodes (79%). Our results suggest that both vole species resemble each other in their efficiency to exploit habitats with low spatio-temporal complexity but may differ in their efficiency at exploiting habitats with temporally changing spatial food distributions. The results imply that spatial ability adjusted to specific food distributions may impair flexible use of habitats that differ in their food distribution and therefore, decrease a species' chances of survival in highly dynamic environments.
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Affiliation(s)
- Moritz Haupt
- Fakultät für Biologie, Universität Bielefeld, 33615 Bielefeld, Germany.
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BANNIKOVA ANNAA, LEBEDEV VLADIMIRS, LISSOVSKY ANDREYA, MATROSOVA VERA, ABRAMSON NATALIAI, OBOLENSKAYA EKATERINAV, TESAKOV ALEXEYS. Molecular phylogeny and evolution of the Asian lineage of vole genus Microtus (Rodentia: Arvicolinae) inferred from mitochondrial cytochrome b sequence. Biol J Linn Soc Lond 2010. [DOI: 10.1111/j.1095-8312.2009.01378.x] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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The allometry of rodent intestines. J Comp Physiol B 2010; 180:741-55. [PMID: 20063002 DOI: 10.1007/s00360-009-0437-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2009] [Revised: 11/05/2009] [Accepted: 11/25/2009] [Indexed: 10/20/2022]
Abstract
This study examined the allometry of the small intestine, caecum, colon and large intestine of rodents (n = 51) using a phylogenetically informed approach. Strong phylogenetic signal was detected in the data for the caecum, colon and large intestine, but not for the small intestine. Most of the phylogenetic signal could be attributed to clade effects associated with herbivorous versus omnivorous rodents. The herbivorous rodents have longer caecums, colons and large intestines, but their small intestines, with the exception of the desert otomyine rodents, are no different to those of omnivorous rodents. Desert otomyine rodents have significantly shorter small intestines than all other rodents, reflecting a possible habitat effect and providing a partial explanation for the low basal metabolic rates of small desert mammals. However, the desert otomyines do not have shorter colons or large intestines, challenging claims for adaptation to water retention in arid environments. Data for the Arvicolidae revealed significantly larger caecums and colons, and hence longer large intestines, with no compensatory reduction in the length of the small intestine, which may explain how the smallest mammalian herbivores manage to meet the demands of a very high mass-specific metabolic rate. This study provides phylogenetically corrected allometries suitable for future prediction testing.
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Abramson NI, Lebedev VS, Tesakov AS, Bannikova AA. Supraspecies relationships in the subfamily Arvicolinae (Rodentia, Cricetidae): An unexpected result of nuclear gene analysis. Mol Biol 2009. [DOI: 10.1134/s0026893309050148] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Renvoisé E, Evans AR, Jebrane A, Labruère C, Laffont R, Montuire S. EVOLUTION OF MAMMAL TOOTH PATTERNS: NEW INSIGHTS FROM A DEVELOPMENTAL PREDICTION MODEL. Evolution 2009; 63:1327-40. [DOI: 10.1111/j.1558-5646.2009.00639.x] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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