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A–C. Mus fragilicauda sp. n. —A. Adult live specimen. —B. Dorsal view of the skull of the holotype. —C. Ventral view of the skull of the holotype.
Source publication
Molecular, chromosomal and morphometric analyses of wild-caught mice of subgenus Mus from the central plain of Thailand are presented. These specimens are distinct from all species previously described in the literature. This has led to the characterization of Mus fragilicauda sp. n., a new member of the set of closely related species encompassed b...
Contexts in source publication
Context 1
... M. fragilicauda (Fig. 4A) is very similar to M. cervicolor popaeus (Thomas, 1919) leading these two taxa to be considered as sibling species. They present nearly identi- cal body and tail sizes, short and slightly bicolour tails, body coloration of brown fur above and brownish grey below, as well as a long nose as compared to that of M. caroli (Table 2). ...
Context 2
... M. fragilicauda and M. cervicolor. Yet the results of the ANOVAs showed that the means of most characters differ significantly between the two species. In particular, M. fragilicauda presents a broader interorbital distance, a longer molar row and a greater width of the first lower molar. Dorsal and ventral views of the skull are presented in Fig. 4B and ...
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Citations
... Molecular analysis showed that M. cervicolor in Thailand was closely related to M. cookii and M. caroli in Southeast Asia (Chevret et al. 2003;Shimada et al. 2009). In their molecular analyses, Auffray et al. (2003) identified a distinct species in Thailand (M. fragilicauda). ...
... Sommeromys macrorhinos Musser and Durden (2002) has been discovered as a new genus and a species from central Sulawesi. Auffray et al (2003) described a new species of subgenus Mus as M. fragilicauda from Thailand. Jenkins et al (2005) described a new family Laonastidae, genus Laonastes and a species L. aenigmamus from Lao People's Democratic Republic. ...
In North-Eastern states of India (NE India), there are almost 65% of mammal species of the country but baseline information on small mammals, particularly rodents, for the region is scanty. The present study recorded a total of 59 species of rodents from NE India out of 100 species reported from the Indian Subcontinent. The list contains all the valid taxonomic names and their distribution in the states of NE India. Additionally, five species has been added to the checklist of rodents in India. The list provided 59 species belonging to 30 genera under 5 families of 7 subfamilies. Among them Muridae was recorded to be with highest number of species (31 species), followed by Sciuridae with 22 species, Cricetidae with three species, while Spalacidae and Hystricidae have recorded only two species in each group. Among the eight states of NE India the highest number of species was recorded from Arunachal Pradesh (76 %) and the lowest, from Tripura (22%). Two Threatened, three Near Threatened, two Not Listed and six Data Deficient species have been listed from the present work with four endemic species from this region. The findings of this study indicated the requirements for intensive and extensive surveys in the northeastern states of India and taxonomic revisions of many species.
... Recent reports of the discovery and rediscovery of species of the subgenus Mus indicate the need to reassess the species composition and distribution of this group. Auffray et al. (2003) reported the presence of a new species, M. fragilicauda, in Thailand, which was later also confirmed to be present in Laos (Suzuki et al., 2004). Our previous work on mice rediscovered two species in Myanmar, showing that mice formerly identified as M. booduga from Mount Popa and M. cervicolor from the Yangon district are, in fact, the existing valid species M. lepidoides (Shimada et al., 2010) and M. nitidulus (Shimada et al., 2007a), respectively. ...
... Mus fragilicauda is a newly discovered species in Myanmar; the type locality of the species is Ban Nong Sanga, Nakhon Ratchasima (Khorat) Province, Thailand (Auffray et al., 2003). The presence of the species in Laos was first observed in a molecular phylogenetic study (Suzuki et al., 2004), in which the species lineage was characterized by a member of the Indian species group (the booduga species group), which includes M. booduga, M. famulus, M. fragilicauda, M. nitidulus, and M. terricolor. ...
The species composition and genetic diversity of the subgenus Mus in Myanmar are not yet fully understood. In this study, mice were trapped in rural areas near the Ayeyarwady River basin, spanning five Myanmar cities from north to south: Mandalay, Bagan, Magway, Pyay, and Yangon. Mitochondrial cytochrome b (Cytb) and nuclear melanocortin 1 receptor (Mc1r) gene sequences were determined for mice sampled and revealed a widespread occurrence of Mus nitidulus in central Myanmar in addition to its previously known occurrence in the Yangon district of southern Myanmar. Analyses of Cytb revealed two haplogroups with a genetic distance of 2.0%, suggestive of divergence several hundred thousand years ago. Mus caroli and M. musculus were confined to Yangon and Mandalay/Bagan/Magway, respectively. Mice collected from a locality on the eastern side of the Ayeyarwady River in Pyay were identified using Cytb and Mc1r sequences as M. fragilicauda, which was previously identified only in Laos and Thailand. The species M. booduga and M. cervicolor previously predicted to be common in the study area were not found. These findings elucidate the species and genetic diversity of the subgenus Mus in the Indo-Malayan Region.
... minutoides), one insectivorous species (M. pahari), and three generalist omnivores often found in sympatry or syntopy in Southeast Asia (Auffray et al., 2003). ...
... The same protocol was used on lab-reared specimens of M. minutoides from a colony kept at the animal facilities at the University of Montpellier. The species studied include, by order of increasing size: Mus minutoides Smith, 1834, Mus caroli Bonhote, 1902, Mus cervicolor Hodgson, 1845, Mus fragilicauda Auffray et al., 2003, andMus pahari Thomas, 1916. Wild rodent specimens included in the study are neither on the CITES list, nor the Red List (IUCN). ...
... Furthermore, M. cervicolor and M. fragilicauda display similar skull morphology despite of their phylogenetic distances (Auffray et al., 2003). ...
Murine rodents display a unique cranial morphology and masticatory musculature. Yet detailed myological descriptions are scarce, especially considering the great diversity of the subfamily and the use of the house mouse and brown rat as model organisms. The masticatory musculature in these two species has been thoroughly described, which allows comparisons with other wild species. Description and comparison of a wide range of species constitutes a necessary step to fully understand how ecological factors may influence the morphology and myology of the skull in the Murinae and vice versa. In this study, we describe the masticatory musculature of five mouse species: Mus caroli, Mus cervicolor, Mus pahari, Mus fragilicauda, and Mus minutoides. For each species, one to five specimens were dissected, and their muscle weights and volumes calculated. One specimen was selected for iodine‐enhanced CT‐scanning, which allowed us to digitally reconstruct the musculature. We then compared the different masticatory arrangements between these species, as well as with the previous descriptions of the house mouse and brown rat. We show that interspecific differences especially involved the temporalis muscle and zygomatico‐mandibularis muscular groups, although some differences were also seen in the pterygoid muscle and masseter muscle groups. We then propose some ecological interpretations for these differences, by interpreting them in terms of functional differences.
... The instability in position of M. spretus within the clade may be due to the rapid speciation of this Palaeartic lineage (Lundrigan et al. 2002) or may be due to differences in selection pressure between M. musculus and M. spretus (Mahler et al. 2008) after the diversification of the lineage. M. spicilegus and M. macedonicus appeared as close relative within the Palearctic clade with lower sequence divergence (0.049) between them, which corroborates the results of Prager et al. (1996), Lundrigan et al. (2002), Auffray et al. (2003) and Tucker et al. (2005. However, MP analysis showed to some extant conflicting result which does not group the two taxa together which is consistent with the result of Fort et al. (1985) and Tucker et al. (1989). ...
Mitochondrial DNA control region of Mus terricolor, three aboriginal species M. spretus, M. macedonicus, M. spicilegus; the Asian lineage M. caroli, M. cervicolor, M. cookii; and the two house mice, M. musculus domesticus and M. m. castaneus were analysed to estimate the substitution rate, phylogenetic relationship and the probable time of divergence. Results showed that M. spretus, M. caroli and M. terricolor are highly diverged from each other (caroli/terricolor = 0.146, caroli/spretus = 0.147 and terricolor/spretus = 0.122), whereas M. spretus showed less divergence with two house mice species (0.070 and 0.071). Sequence divergence between M. terricolor and the Palearctic group were found to be ranging from 0.121 to 0.134. Phylogenetic analysis by minimum evolution, neighbour-joining, unweighed pair group method with arithmetic mean and maximum parsimony showed almost similar topology. Two major clusters were found, one included the Asian lineage, M. caroli, M. cookii and M. cervicolor and the other included the house mice M. m. domesticus, M. m. castaneus and the aboriginal mice M. macedonicus and M. spicilegus along with M. spretus, forming the Palearctic clade. M. terricolor was positioned between the Palearctic and Asian clades. Results showed that Palearctic-terricolor and the Asian lineages diverged 5.47 million years ago (Mya), while M. terricolor had split around 4.63 Mya from their ancestor. M. cervicolor, M. cookii and M. caroli diverged between 4.70 and 3.36 Mya, which indicates that M. terricolor and the Asian lineages evolved simultaneously. M. spretus is expected to have diverged nearly 2.9 Mya from their most recent common ancestor.
... Toutefois, de nouvelles espèces et de nouveaux genres au sein de ces deux tribus sont régulièrement décrites en Asie du Sud-Est, tant et si bien que les ouvrages de référence sont rapidement incomplets voir obsolètes. Ainsi, dans la zone étudiée, la tribu des Murini s'est enrichie récemment d'un taxon, Mus fagilicauda(Auffray et al., 2003) et Mus pahari Thomas, 1916 est aujourd'hui regardé comme un complexe d'espèces(Suzuki and Aplin, 2012). Au sein de la tribu des Rattini, les populations du Sud-Est asiatique de Micromys minutus Pallas, 1771 ont été élevées au rang spécifique et rattachées à M. erythrotis (Blyth, 1856) par Abramov et al. (2009). ...
L’Asie du Sud-Est est un point chaud de la biodiversité et, dans le même temps, cette
région est un foyer actif d’émergence ou de réémergence de zoonoses (SRAS, grippes
aviaires, leptospirose, roboviroses etc..). Le développement économique sans précédent et la
croissance démographique humaine que connait la zone biogéographique indochinoise sont
un moteur de changements considérables des écosystèmes. Dans le contexte du changement
global, il est primordial de comprendre comment ces modifications environnementales
modifient les interactions entre les communautés d’hôtes et leurs communautés de
parasites/pathogènes afin d’appréhender les transformations du paysage épidémiologique.
Certaines espèces, qui sont des réservoirs de zoonoses constituent, de par leur mode de vie et
leur statut de gibier des modèles particulièrement intéressants à étudier dans ce cadre. C’est le
cas, pour la zone étudiée, des rongeurs et plus particulièrement des représentants de deux
tribus de la sous-famille des Murinae : les Rattini et les Murini. La première partie de ce
mémoire porte sur ces deux tribus, particulièrement diversifiés en Asie du Sud-Est. L’objectif
a été d’étudier la faisabilité d’un outil d’identification web-service innovant basé sur la
morphométrie. Cet outil viendra compléter des réalisations qui lui sont antérieures à savoir :
un guide d’identification de terrain et un premier outil web-service basé sur l’identification
moléculaire. Ces productions formeront un ensemble cohérent d’outils d’identification
permettant d’offrir à la communauté des personnes désireuses d’étudier les rongeurs de la
zone des accès multiples et adaptés à une identification de qualité. Pour la réalisation de cet
outil d’identification morphométrique, nous avons tout d’abord étudié quels sont les facteurs
intra et inter-spécifiques qui influencent la variation morphologique des espèces de rongeurs.
Cette étude, au travers d’une approche de systématique intégrative a ainsi contribué à la
stabilisation de la taxonomie des Rattini. L’étude morphométrique est entièrement basée sur
un jeu de données de six cent soixante individus qui appartiennent à dix-sept espèces.
L’ensemble des individus a fait au préalable l’objet d’une identification moléculaire réalisée à
l’aide d’un gène mitochondrial. Dans le cadre de la création du web-service morphométrique,
les sources d’erreurs relatives à la comparaison de jeux de données produits par des
opérateurs différents sont identifiées et encadrées car elles pourraient compromettre
l’identification des individus. Des seuils d’assignation sont également définis pour permettre à
l’outil de gérer la confrontation avec des espèces qui ne sont pas représentées dans le jeu de
données de référence. Dans un second temps nous avons souhaité replacer la disparité
morphologique observée chez les espèces actuelles dans un contexte évolutif. L’objectif était
de comprendre les patrons macro-évolutifs qui ont potentiellement gouverné la mise en place
de la variation morphologique et ainsi d’évaluer le rôle de l’environnement sur celle-ci.
MOTS-CLÉS : Rattini, Murini, taxonomie intégrative, code barre moléculaire,
analyse Procrustes, identification, web-service.
... However, more recent fieldwork in several parts of Eurasia exposed several other well-differentiated species. Mus fragilicauda was first detected in northeastern Thailand (Auffray et al., 2003) and reported soon thereafter from Laos (Suzuki et al., 2004). More recently, M. nitidulus and M. lepidoides, two Myanmar endemics, were resurrected from synonymy of M. cervicolor and M. booduga, respectively (Shimada et al., 2007a(Shimada et al., , 2010; see also Auffray and Britton-Davidian, Chapter 1 in this volume). ...
The house mouse is the source of almost all genetic variation in laboratory mice; its genome was sequenced alongside that of humans, and it has become the model for mammalian speciation. Featuring contributions from leaders in the field, this volume provides the evolutionary context necessary to interpret these patterns and processes in the age of genomics. The topics reviewed include mouse phylogeny, phylogeography, origins of commensalism, adaptation, and dynamics of secondary contacts between subspecies. Explorations of mouse behavior cover the nature of chemical and ultrasonic signalling, recognition, and social environment. The importance of the mouse as an evolutionary model is highlighted in reviews of the first described example of meiotic drive (t-haplotype) and the first identified mammalian speciation gene (Prdm9). This detailed overview of house mouse evolution is a valuable resource for researchers of mouse biology as well as those interested in mouse genetics, evolutionary biology, behavior, parasitology, and archaeozoology.
... By the late 1990s, 9 of the 14 taxa known today had been clearly identified, with criteria that left no doubt as to their species status: musculus, spretus, spicilegus, macedonicus, cervicolor, caroli, cookii, booduga, and terricolor. It was only in 2003 that a second wave of amazing reviews or descriptions of new species began, which led to an increase by more than half of the number of species diagnosed by taxonomists in the subgenus Mus: M. famulus (Chevret et al., 2003), M. fragilicauda ( Auffray et al., 2003), M. cypriacus (Cucchi et al., 2006), M. nitidulus (Shimada et al., 2007), and M. lepidoides (Shimada et al., 2010). Several subspecies were also recognized, not only in the Mus musculus complex but also within M. macedonicus (Orth et al., 2002a) and M. spicilegus (Kryštufek and Macholán, 1998). ...
... Since then, four individuals were trapped in two neighbouring localities of Loei Province, Thailand (17°23 0 36 00 N, Description and diagnosis M. fragilicauda is a short-tailed mouse (HB / T: ca. 1.21; Auffray et al., 2003). Considered as a sibling species of M. cervicolor, it is extremely difficult to diagnose this species in the field without molecular markers. ...
... Marshall (1977) considered that there were two subspecies, M. c. cervicolor and M. c. popaeus, the second being larger, inhabiting respectively rice and grass fields and forests. When mice from the supposed geographic area of both subspecies were investigated, morphological and molecular analyses failed to confirm the existence of these two subspecies (Macholán, 2001;Auffray et al., 2003). It occurs sympatrically with M. caroli, M. fragilicauda, M. cookii, and M. m. castaneus. ...
A quarter of a century before the advent of biochemical tools for taxonomic approaches, Schwarz and Schwarz (1943) published a pioneering survey of the systematics of the house mouse. All taxa were then considered as subspecies of the house mouse (Mus musculus). In other words, there was only one species within the subgenus Mus. It was a relatively large-scale study, but the taxonomic criteria were obviously based solely on external morphology and distribution of species. It is nowadays well established that the subgenus Mus exhibits high inter-specific morphological conservatism and that all species share an important part of their intra-specific variation. Most, if not all, classical external criteria such as coat colour, length of head, body, tail, ear, or foot, are poorly discriminating between species, and, except for very few (e.g. the zygomatic index for M. musculus; Orsini et al., 1983), none has a general and specific diagnostic value. When only one or two species occur sympatrically, some characters may be diagnostic, such as the length of the tail, which is useful to distinguish Mus musculus domesticus, one of the longest-tailed mice, from all sympatric species. Thus, there is only a poor correspondence between the 15 subspecies of Mus musculus described by Schwarz and Schwarz (1943) and the species that are now diagnosed by taxonomists.
... Subsequently, DOM specimens were pooled irrespective of their karyotype. The subspecific assignation of the studied specimens was determined from published molecular analyses of these individuals (mitochondrial and nuclear sequences; Duplantier et al., 2002; Auffray et al., 2003; Bonhomme et al., 2007 ). These studies revealed that the mouse from Madagascar had a mosaic genome: while it clearly harbored a distinct mitochondrial genome attributed to GEN (Prager et al., 1998; Duplantier et al., 2002), nuclear markers indicated an affinity with CAS (Bonhomme et al., 2007). ...
Variation in the number and chromosomal location of nucleolar organizer regions (NORs) was studied in the house mouse, Mus musculus (2n=40). From an origin in Western Asia, this species colonized the Middle East, Europe and Asia. This expansion was accompanied by diversification into five subspecies. NOR diversity was revealed by fluorescence in situ hybridization using 18S and 28S probes on specimens spanning Asia to Western Europe. The results showed that the house mouse genome possessed a large number of NOR-bearing autosomes and a surprisingly high rate of polymorphism for the presence/absence of rRNA genes on all these chromosomes. All NOR sites were adjacent to the centromere except for two that were telomeric. Subspecific differentiation established from the NOR frequency data was concordant with the overall pattern of radiation proposed from molecular studies, but highlighted several discrepancies that need to be further addressed. NOR diversity in M. musculus consisted of a large number of polymorphic NORs that were common to at least two subspecies, and a smaller number of NORs that were unique to one subspecies. The most parsimonious scenario argues in favor of a subspecific differentiation by lineage sorting of ancestral NOR polymorphisms; only the unique NORs would have appeared by inter-chromosomal transposition, except for the two telomeric ones that may have originated by hybridization with another species. Such a scenario provides an alternative view from the one prevailing in most systematic and phylogenetic analyses that NORs have a high transposition rate due to concerted evolution of rRNA genes.
... Mus caroli (Bonhote, 1902), M. cervicolor (Hodgson, 1845) and M. cookii (Ryley, 1914) Seven male and seven female mice, trapped close to or within pineapple fields in Loei, were characterized by an identical 2n = 40 acrocentric karyotype (NFa = 38). The karyotypes of the Thailand species M. musculus castaneus, M. caroli, M. cervicolor, M. cookii, M. shortridgei and M. fragilicauda (see Auffray et al., 2003, and references therein) all have the same invariant karyotype (Auffray et al., 2003) indistinguishable from that evidenced by our specimens. Molecular typing using rDNA16S and rDNA28S nucleotide sequences of the 14 specimens analysed by us allowed the identification of three different species in our sample: M. caroli, M. cervicolor and M. cookii (A. ...
... Mus caroli (Bonhote, 1902), M. cervicolor (Hodgson, 1845) and M. cookii (Ryley, 1914) Seven male and seven female mice, trapped close to or within pineapple fields in Loei, were characterized by an identical 2n = 40 acrocentric karyotype (NFa = 38). The karyotypes of the Thailand species M. musculus castaneus, M. caroli, M. cervicolor, M. cookii, M. shortridgei and M. fragilicauda (see Auffray et al., 2003, and references therein) all have the same invariant karyotype (Auffray et al., 2003) indistinguishable from that evidenced by our specimens. Molecular typing using rDNA16S and rDNA28S nucleotide sequences of the 14 specimens analysed by us allowed the identification of three different species in our sample: M. caroli, M. cervicolor and M. cookii (A. ...
... comm.). Several of these animals were caught in the same trap lines, often only metres apart, thus representing another report of true syntopy as has been similarly suggested for M. caroli, M. cervicolor and M. fragilicauda in Thailand (Auffray et al., 2003). ...
Karyotypes of 18 rodent species collected in various localities in Thailand were analysed as part of an epidemiological survey of the region using conventional cytogenetic techniques. The aim was to re-assess the reliability of karyotype-based diagnoses of Thai rodents using an updated taxonomic framework. The species examined include Menetes berdmorei (Sciuridae), Mus caroli, Mus cervicolor and Mus cookii, Hapalomys delacouri, Chiropodomys gliroides, as well as several representatives of most of the lineages of the Rattini tribe, that is Rattus exulans, Rattus losea, Rattus tanezumi, Leopoldamys edwardsi, Leopoldamys neilli, Maxomys surifer, Niviventer fulvescens, Berylmys berdmorei, Berylmys bowersi, Bandicota indica and Bandicota savilei (Muridae). The first descriptions of G- and/or C-banding karyotypes are provided for several of these, that is, B. savilei, L. edwardsi, M. surifer, B. berdmorei, B. bowersi, N. fulvescens and H. delacouri. Although largely in agreement with available data, our findings on chromosome morphology differ slightly from those published for L. edwardsi, M. surifer, B. savilei and the two Berylmys species, B. berdmorei and B. bowersi. In addition, we document the novel finding of B-chromosomes in the genera Berylmys, Bandicota and the emblematic Mus. Importantly, few species-specific chromosomal characteristic could be identified within most of the genera investigated in our study and, in contrast to previous claims, the usefulness of karyotypes for diagnosing these Asian murid species appears to be limited.
