Abstract:
:The tassel-eared squirrel, Sciurus aberti, is separated into six subspecies which occupy restricted and comparable habitats in ponderosa pine forests in the south-western United States and Mexico. These forests and squirrel populations are currently isolated by large arid areas and, as such, S. aberti appears to offer an example of incipient speciation. We sequenced the complete mitochondrial cytochrome b gene to construct a molecular phylogeny for S. aberti and to determine whether subspecific genetic structure and geographic patterns are correlative. Twenty alleles were identified among 612 squirrels throughout the species' range. Nucleotide divergence between alleles ranged from 0.009 to 0.0233, whereas average sequence divergence between S. aberti and an outgroup species, Sciurus niger, was 0.1823. Neighbor-joining and maximum parsimony analyses identified three major genetic assemblages composed of the following subspecies groups: (1) barberi and durangi; (2) aberti and kaibabensis; and (3) ferreus. The chuscensis samples were the only population with divergent sequences; one sequence was identical to an aberti sequence and a second unique sequence clustered with the ferreus sequences. The presence of divergent sequences in the chuscensis population, coupled with its central geographic position between aberti and ferreus, suggests a relatively recent influx of aberti mtDNA. Estimates of the times separating sequences in subspecies within different groups ranged from 0.94 to 1.52 x 10(6) years, based on a rate estimate of 7.15 x 10(-9) substitutions/year/site. The limited divergence observed between (1) aberti and kaibabensis as well as (2) barberi and durangi suggests relatively recent separations of subspecies within each assemblage. In fact, populations defined morphologically and geographically as ferreus exhibited greater sequence divergence than the aforementioned groups, identifying ferreus as the subspecies with the greatest genetic substructuring. The levels of cytochrome b divergence observed for the three distinct groups argues against a significant role for late Pleistocene glaciation in dispersal of this particular species; however, the proposed intermixing of aberti and chuscensis populations may well have been associated with such glacial events. Nucleotide diversity within subspecies ranked chuscensis > aberti > barberi approximately kaibabensis approximately ferreus subpopulations; the relatively high level of diversity of chuscensis samples likely results from the apparent introgression of an aberti haplotype. The comparative levels of diversity in the aberti, barberi, kaibabensis, and ferreus sample populations do not correlate with respective habitat size (and presumably population size), suggesting that relatively recent forces, e.g., glaciation and inconsistent timber harvests, may have influenced diversity in these populations without apparent alterations in population size.
journal_name
Mol Phylogenet Evoljournal_title
Molecular phylogenetics and evolutionauthors
Wettstein PJ,Strausbauch M,Lamb T,States J,Chakraborty R,Jin L,Riblet Rdoi
10.1006/mpev.1995.1015subject
Has Abstractpub_date
1995-06-01 00:00:00pages
150-62issue
2eissn
1055-7903issn
1095-9513pii
S1055790385710159journal_volume
4pub_type
杂志文章abstract::Using molecular data from three protein encoding genes and 49 taxa (98 specimens from 20 African countries), we provide an extended phylogeny of Ceratitis and investigate the evolution of stenophagy across clades. Bayesian tree reconstructions support previously proposed monophyletic lineages (Pardalaspis, Pterandrus ...
journal_title:Molecular phylogenetics and evolution
pub_type: 杂志文章
doi:10.1016/j.ympev.2011.04.004
更新日期:2011-08-01 00:00:00
abstract::Polygonatum is a widespread temperate genus with approximately 75 species centered in the Eastern Himalaya and Indo-Burma biodiversity hotspots. A complete assessment of the remarkable diversity of Polygonatum in these areas requires an accurate circumscription of the genus, as well as a clear understanding of generic...
journal_title:Molecular phylogenetics and evolution
pub_type: 杂志文章
doi:10.1016/j.ympev.2018.08.017
更新日期:2018-12-01 00:00:00
abstract::Carassius auratus complex is believed to originate from East Eurasia and consist of diploid and triploid forms. Diploid form reproduces sexually, whereas triploid form possesses mixture modes of unisexual gynogenesis and sexual reproduction, which makes it a unique case to study evolutionary issues among vertebrates. ...
journal_title:Molecular phylogenetics and evolution
pub_type: 杂志文章
doi:10.1016/j.ympev.2012.10.006
更新日期:2013-01-01 00:00:00
abstract::A combined molecular (18S rDNA, 28S rDNA, 16S rDNA and COI) and morphological analysis of the benthic phyllodocids is presented for the first time. Nineteen phyllodocids and two outgroup taxa are assessed using parsimony, maximum likelihood and Bayesian analyses. We demonstrate high degrees in homoplasy in the traditi...
journal_title:Molecular phylogenetics and evolution
pub_type: 杂志文章
doi:10.1016/j.ympev.2007.04.015
更新日期:2007-10-01 00:00:00
abstract::The genus Gephyromantis is a clade within the Malagasy-Comoroan family Mantellidae composed of rainforest frogs that live and breed to varying degrees independently from water. Based on DNA sequences of five mitochondrial and five nuclear genes we inferred the phylogeny of these frogs with full taxon coverage at the s...
journal_title:Molecular phylogenetics and evolution
pub_type: 杂志文章
doi:10.1016/j.ympev.2011.09.023
更新日期:2012-01-01 00:00:00
abstract::Oriental voles of the genus Eothenomys are predominantly distributed along the Southeastern shoulder of the Qinghai-Tibetan Plateau. Based on phylogenetic analyses of the mitochondrial cytochrome b gene (1143 bp) obtained from 23 specimens (eight species) of Oriental voles collected from this area, together with nucle...
journal_title:Molecular phylogenetics and evolution
pub_type: 杂志文章
doi:10.1016/j.ympev.2004.06.005
更新日期:2004-11-01 00:00:00
abstract::Sequence data from the noncoding region separating the plastid genes atpbeta and rbcL were gathered for 27 epacrid taxa, representing all previously recognized infrafamilial groups, and four outgroup taxa (Ericaceae), to address several persistent phylogenetic questions in the group. Parsimony analyses were conducted ...
journal_title:Molecular phylogenetics and evolution
pub_type: 杂志文章
doi:10.1006/mpev.2000.0794
更新日期:2000-08-01 00:00:00
abstract::SymRK is one of the key genes involved in initial steps of legume symbiotic association with fungi (mycorrhization) and nitrogen-fixing bacteria (nodulation). A large portion of the sequence encoding the extracellular domain of SYMRK was obtained for 38 lupine accessions and 2 outgroups in order to characterize this r...
journal_title:Molecular phylogenetics and evolution
pub_type: 杂志文章
doi:10.1016/j.ympev.2011.04.017
更新日期:2011-07-01 00:00:00
abstract::Ancient lakes are renowned for their exceptional diversity of endemic species. As model systems for the study of sympatric speciation, it is necessary to understand whether a given hypothesized species flock is of monophyletic or polyphyletic origin. Here, we present the first molecular characterization of the Hyalell...
journal_title:Molecular phylogenetics and evolution
pub_type: 杂志文章
doi:10.1016/j.ympev.2018.03.004
更新日期:2018-08-01 00:00:00
abstract::Because of their importance for proper development of the bilaterian embryo, Hox genes have taken center stage for investigations into the evolution of bilaterian metazoans. Taxonomic surveys of major protostome taxa have shown that Hox genes are also excellent phylogenetic markers, as specific Hox genes are restricte...
journal_title:Molecular phylogenetics and evolution
pub_type: 杂志文章
doi:10.1016/j.ympev.2003.10.007
更新日期:2004-06-01 00:00:00
abstract::Despite its great diversity and biomedical importance, the rodent subfamily Murinae is poorly resolved phylogenetically. We present the first cladistic analysis sampling multiple representatives of most major groups based on DNA sequence for three nuclear (GHR, RAG1, and AP5) and one mitochondrial (COII and parts of C...
journal_title:Molecular phylogenetics and evolution
pub_type: 杂志文章
doi:10.1016/j.ympev.2005.04.016
更新日期:2005-11-01 00:00:00
abstract::We have amplified and sequenced PCR products derived from 10 nuclear receptor (NR) genes from the anthozoan cnidarian Acropora millepora, including five products corresponding to genes not previously reported from the phylum Cnidaria. cDNAs corresponding to seven of these products were sequenced and at least three enc...
journal_title:Molecular phylogenetics and evolution
pub_type: 杂志文章
doi:10.1006/mpev.2001.0994
更新日期:2001-10-01 00:00:00
abstract::As an endangered animal group, musk deer (genus Moschus) are not only a great concern of wildlife conservation, but also of special interest to evolutionary studies due to long-standing arguments on the taxonomic and phylogenetic associations in this group. Using museum samples, we sequenced complete mitochondrial cyt...
journal_title:Molecular phylogenetics and evolution
pub_type: 杂志文章
doi:10.1006/mpev.1999.0616
更新日期:1999-08-01 00:00:00
abstract::Zambian rivers belong to two major drainages: the Luapula-Congo and the Zambezi River system. Tectonic activity repeatedly altered drainage systems in Africa, so that current fish faunas can only be understood in the context of historic drainage capture events. We use phylogenetic relationships of one widespread linea...
journal_title:Molecular phylogenetics and evolution
pub_type: 杂志文章
doi:10.1016/j.ympev.2007.02.011
更新日期:2007-10-01 00:00:00
abstract::Tenrecs are a diverse family of insectivores, with an Afro-Malagasian biogeographic distribution. Three subfamilies (Geogalinae, Oryzorictinae, Tenrecinae) are restricted to Madagascar and one subfamily, the otter shrews (Potamogalinae), occurs on the mainland. Morphological studies have generated conflicting hypothes...
journal_title:Molecular phylogenetics and evolution
pub_type: 杂志文章
doi:10.1006/mpev.2001.1055
更新日期:2002-03-01 00:00:00
abstract::The owl family Tytonidae comprises two genera: Phodilus, limited to the forests of central Africa and South-East Asia, and the ubiquitous Tyto. The genus Tyto is majorly represented by the cosmopolitan Common Barn Owl group, with more than 30 subspecies worldwide. Discrete differences in body size and plumage colourat...
journal_title:Molecular phylogenetics and evolution
pub_type: 杂志文章
doi:10.1016/j.ympev.2018.03.013
更新日期:2018-08-01 00:00:00
abstract::Snakes represent one of the most ubiquitous and successful groups of terrestrial vertebrates; however, many aspects of their evolutionary relationships remain uncertain. Previous research, which utilized morphological and immunological data, has not resolved the origin of snakes or clearly delineated the relationships...
journal_title:Molecular phylogenetics and evolution
pub_type: 杂志文章
doi:10.1006/mpev.1995.1010
更新日期:1995-03-01 00:00:00
abstract::A comprehensive phylogeny of the genus Salaria based on mitochondrial and nuclear markers grouped the extant species of the genus in well-characterised marine and freshwater clades, thus rejecting the hypothesis of a polytypic origin of the freshwater Salaria populations and supporting the occurrence of a single invas...
journal_title:Molecular phylogenetics and evolution
pub_type: 杂志文章
doi:10.1016/j.ympev.2019.02.026
更新日期:2019-06-01 00:00:00
abstract::Slo1 and Slo3 encode close paralogues of the Slo potassium (K+) channels family. Despite their evolutionary relatedness, Slo1 and Slo3 channels show marked functional differences and evolutionary dynamics. Whereas Slo1 is a highly conserved and widely expressed channel, Slo3 is a rapidly evolving channel restricted to...
journal_title:Molecular phylogenetics and evolution
pub_type: 杂志文章
doi:10.1016/j.ympev.2018.12.026
更新日期:2019-04-01 00:00:00
abstract::Phylogenetic hypotheses generated from cladistic analysis of organismal and molecular data are shown to be generally congruent and/or complementary for comparisons of unicellular and colonial green algae in the Chlorophyceae. Cladistic analysis of organismal character data corroborates the alliance of colonial Stephan...
journal_title:Molecular phylogenetics and evolution
pub_type: 杂志文章
doi:10.1006/mpev.1994.1039
更新日期:1994-12-01 00:00:00
abstract::Phylogenetic relationships of Croton section Cleodora (Klotzsch) Baill. were evaluated using the nuclear ribosomal ITS and the chloroplast trnL-F and trnH-psbA regions. Our results show a strongly supported clade containing most previously recognized section Cleodora species, plus some other species morphologically si...
journal_title:Molecular phylogenetics and evolution
pub_type: 杂志文章
doi:10.1016/j.ympev.2011.04.013
更新日期:2011-08-01 00:00:00
abstract::The Near and Middle East is a hotspot of biodiversity, but the region remains underexplored at the level of genetic biodiversity. Here, we present an extensive molecular phylogeny of the viperid snake genus Montivipera, including all known taxa. Based on nuclear and mitochondrial data, we present novel insights into t...
journal_title:Molecular phylogenetics and evolution
pub_type: 杂志文章
doi:10.1016/j.ympev.2016.04.025
更新日期:2016-08-01 00:00:00
abstract::The phylogeny of four sibling species of Simulium venustum (CC, CC3, CC4, and AC(gB)) and two sibling species of S. verecundum (AA and ACD = S. rostratum) was reconstructed using nucleotide sequences of the mitochondrial large subunit rRNA gene. Separate phylogenetic analyses were performed by dividing the sequence da...
journal_title:Molecular phylogenetics and evolution
pub_type: 杂志文章
doi:10.1006/mpev.1993.1028
更新日期:1993-12-01 00:00:00
abstract::Molecular methods have been used for the first time to determine the phylogeny of families, genera and species within the Pennatulacea (sea pens). Variation in ND2 and mtMutS mitochondrial protein-coding genes proved adequate to resolve phylogenetic relationships among pennatulacean families. The gene mtMutS is more v...
journal_title:Molecular phylogenetics and evolution
pub_type: 杂志文章
doi:10.1016/j.ympev.2013.07.018
更新日期:2013-12-01 00:00:00
abstract::We present a phylogenetic hypothesis of the anuran clade Terrarana based on partial sequences of nuclear (Tyr and RAG1) and mitochondrial (12S, tRNA-Val, and 16S) genes, testing the monophyly of Ischnocnema and its species series. We performed maximum parsimony, maximum likelihood, and Bayesian inference analyses on 3...
journal_title:Molecular phylogenetics and evolution
pub_type: 杂志文章
doi:10.1016/j.ympev.2012.07.016
更新日期:2012-11-01 00:00:00
abstract::Phylogenetic relationships among the trichomycterid catfishes are investigated for the first time using molecular sequence data. Data derived from mitochondrial and nuclear DNA sequences for representatives of 17 genera were analyzed to test previous hypotheses of relationships among trichomycterid subfamilies, the mo...
journal_title:Molecular phylogenetics and evolution
pub_type: 杂志文章
doi:10.1016/j.ympev.2009.02.016
更新日期:2009-08-01 00:00:00
abstract::We reconstructed phylogenetic relationships of the family Badidae using both mitochondrial and nuclear nucleotide sequence data to address badid systematics and to evaluate the role of vicariant speciation on their evolution and current distribution. Phy-logenetic hypotheses were derived from complete cytochrome b (1,...
journal_title:Molecular phylogenetics and evolution
pub_type: 杂志文章
doi:10.1016/j.ympev.2004.04.020
更新日期:2004-09-01 00:00:00
abstract::Phylogenetic relationships between Trogoniformes and several other putative closely related groups of birds, based on complete cytochrome b and nearly complete 12S ribosomal RNA sequences, were studied. The taxa included trogons, owls, cuckoos, parrots, nightjars, hummingbirds, kingfishers, motmots, rollers, mousebird...
journal_title:Molecular phylogenetics and evolution
pub_type: 杂志文章
doi:10.1006/mpev.1999.0683
更新日期:2000-01-01 00:00:00
abstract::We investigated the phylogenetic relationships and phylogeography among individuals of the endemic newt (Cynops ensicauda) of the Central Ryukyus, Japan based on the mitochondrial cytochrome b gene. The results of phylogenetic analyses showed the presence of remarkable differentiation between assemblages from the Amam...
journal_title:Molecular phylogenetics and evolution
pub_type: 杂志文章
doi:10.1016/j.ympev.2009.11.002
更新日期:2010-03-01 00:00:00
abstract::Sequences of the cytochrome b (cyt b) mitochondrial gene show that the spiny mouse Acomys from Crete, known as the endemic species A. minous, is composed of two distinct maternal lineages ("A" and "B"). Group "A" sequences cluster with A. nesiotes (Cyprus) and group "B" sequences cluster with A. cilicicus (Turkey), wh...
journal_title:Molecular phylogenetics and evolution
pub_type: 杂志文章
doi:10.1006/mpev.2000.0859
更新日期:2001-01-01 00:00:00