Topic
Graphiurus
About: Graphiurus is a research topic. Over the lifetime, 22 publications have been published within this topic receiving 374 citations.
Papers
TL;DR: In this paper, the Gliridae are classified into five subfamilies: Bransatoglirinae, Graphiurinae and Graphiurus and Leithia.
Abstract: The supra-familiar relationships of the Gliridae are discussed. The criterion used for subdividing the Gliridae is the morphology of the cheek teeth because this is the only character known for all taxa. This limitation leads to the undesirable "synonymy" of Glamys and Gliravus , two genera whose type species have a very different skull morphology, and to the incorporation into the Dryomyinae of Graphiurus and Leithia , despite the fact that Dryomys has a myomorph, Graphiurus a hystricomorph and Leithia a sciuromorph skull. The hundred and seventy-seven species and thirty eight genera of dormice are grouped into five subfamilies. One of these, the Bransatoglirinae, is new. The subfamily Graphiurinae is supressed and Graphiurus is assigned to the Dryomyinae. The genera of the Gliridae and the species allocated to them are listed in the appendix in alphabetical order. The original diagnoses of the genera are given in English and the type locality, type level and synonymy of each species is given.
Riassunto Una classificazione di Gliridae (Rodentia) sulla base della morfologia dentale - Vengono discusse le relazioni soprafamiliari dei Gliridi. I1 criterio utilizzato per la suddivisione dei Gliridi e la morfologia dei denti molari poiche e l'unico carattere noto per tutti i taxa. Questa limitazione porta alla "sinonimia" non voluta di Glamys e Gliravus , due generi le cui specie tipiche presentano una struttura del cranio molto diversa, ed alla incorporazione di Graphiurus e Leithia nei Dryomyinae, sebbene Dryomys abbia un cranio miomorfo, Graphiurus un cranio istricomorfo e Leithia un cranio sciuromorfo. Le centosettantasette specie ed i trentotto generi di Gliridi sono raggruppati in cinque sottofamiglie. Una di queste, Bransatoglirinae, e nuova. La sottofamiglia Graphiurinae viene soppressa e Graphiurus e incluso nei Dryomyinae. I generi dei Gliridi e le specie in essi incluse sono elencati in appendice in ordine alfabetico. Le diagnosi originali dei generi sono date in inglese e vengono date localita tipica, livello stratigrafico tipico e sinonimie di ogni specie.
104 citations
TL;DR: The results showed that each lineage of Graphiurus, Glis, Glirulus and Muscardinus dates from the Late Oligocene to the Early Miocene period, which is mostly in agreement with fossil records.
Abstract: We examined phylogenetic relationships among six species representing three subfamilies, Glirinae, Graphiurinae and Leithiinae with sequences from three nuclear protein-coding genes (apolipoprotein B, APOB; interphotoreceptor retinoid-binding protein, IRBP; recombination-activating gene 1, RAG1). Phylogenetic trees reconstructed from maximum-parsimony (MP), maximum-likelihood (ML) and Bayesian-inference (BI) analyses showed the monophyly of Glirinae (Glis and Glirulus) and Leithiinae (Dryomys, Eliomys and Muscardinus) with strong support, although the branch length maintaining this relationship was very short, implying rapid diversification among the three subfamilies. Divergence time estimates were calculated from ML (local clock model) and Bayesian-dating method using a calibration point of 25 Myr (million years) ago for the divergence between Glis and Glirulus, and 55 Myr ago for the split between lineages of Gliridae and Sciuridae on the basis of fossil records. The results showed that each lineage of Graphiurus, Glis, Glirulus and Muscardinus dates from the Late Oligocene to the Early Miocene period, which is mostly in agreement with fossil records. Taking into account that warm climate harbouring a glirid-favoured forest dominated from Europe to Asia during this period, it is considered that this warm environment triggered the prosperity of the glirid species through the rapid diversification. Glirulus japonicus is suggested to be a relict of this ancient diversification during the warm period.
39 citations
TL;DR: Results show that hystricomorphy of graphiurines was achieved convergently with otherhystricomorph rodents and was associated with a similar mandible shape characterized by a well-developed coronoid process.
35 citations
TL;DR: Analysis of 12S RNA and cytochrome b mitochondrial gene sequences for six glirid genera reveals that Graphiurus is clearly a member of the Gliridae, refuting the hypothesis that the family could be paraphyletic and postulate that its hystricomorphous condition has been achieved convergently with other hysticomorphous rodents.
Abstract: Gliridae is a small family of rodents including three subfamilies: the Eurasian Glirinae (with three genera) and Leithiinae (with four genera) and the African Graphiurinae (with a single genus). Phylogenetic relationships among these eight genera are not fully resolved based on morphological characters. Moreover, the genus Graphiurus is characterized by numerous peculiar features (morphological characters and geographical distribution), raising the question of its relationships to the family Gliridae. The phylogenetic position of Graphiurus and the intra-Gliridae relationships are here addressed by a molecular analysis of 12S RNA and cytochrome b mitochondrial gene sequences for six glirid genera. Phylogenetic analyses are performed with three construction methods (neighbor-joining, maximum parsimony and maximum likelihood) and tests of alternative topologies with respect to the most likely. Our analyses reveal that Graphiurus is clearly a member of the Gliridae, refuting the hypothesis that the family could be paraphyletic. Among Gliridae, phylogenetic relationships are poorly resolved: the Leithiinae could be monophyletic, there is no support for the subfamily Glirinae, and the closest relative of Graphiurus is not identified. The inclusion of Graphiurus among Gliridae allows us to postulate that its hystricomorphous condition has been achieved convergently with other hystricomorphous rodents.
30 citations
Journal Article•
TL;DR: The diploid and autosomal fundamental numbers of these rodent taxa are reported and cases for which there should be a re-evaluation of specific names that were not included in the last rodent checklist are highlighted.
Abstract: An extended survey of taxa belonging to two genera of Cricetomyinae (Cricetomys and Saccostomus), one Gerbillinae (Gerbilliscus), eight Murinae (Acomys, Aethomys, Arvicanthis, Lemniscomys, Mus (Nannomys), Mastomys, Grammomys, Stenocephalemys) and one Myoxidae (Graphiurus) was carried out as part of the EU programme “Staplerat” involving Ethiopia, Kenya, Tanzania and Zambia. Here we report the diploid and autosomal fundamental numbers of these rodent taxa. Seventeen of them were unknown, for four we report chromosomal variants and for another 16 new localities where they occur. We discuss their specific status taking into consideration our results together with data from literature and highlight the problems in taxonomy and systematics that are yet to be solved, due do their extended range and the occurrence of species complexes. We highlight cases for which there should be a re-evaluation of specific names that were not included in the last rodent checklist.
27 citations
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Performance Metrics
| Year | Papers |
|---|---|
| 2019 | 1 |
| 2013 | 1 |
| 2010 | 1 |
| 2009 | 1 |
| 2008 | 1 |
| 2007 | 1 |