Abstract:
:Diversifying selection on metabolic pathways can reduce intraspecific gene flow and promote population divergence. An opportunity to explore this arises from mitonuclear discordance observed in an Australian bird Eopsaltria australis. Across >1500 km, nuclear differentiation is low and latitudinally structured by isolation by distance, whereas two highly divergent, parapatric mitochondrial lineages (>6.6% in ND2) show a discordant longitudinal geographic pattern and experience different climates. Vicariance, incomplete lineage sorting and sex-biased dispersal were shown earlier to be unlikely drivers of the mitonuclear discordance; instead, natural selection on a female-linked trait was the preferred hypothesis. Accordingly, here we tested for signals of positive, divergent selection on mitochondrial genes in E. australis. We used codon models and physicochemical profiles of amino acid replacements to analyse complete mitochondrial genomes of the two mitochondrial lineages in E. australis, its sister species Eopsaltria griseogularis, and outgroups. We found evidence of positive selection on at least five amino acids, encoded by genes of two oxidative phosphorylation pathway complexes NADH dehydrogenase (ND4 and ND4L) and cytochrome bc1 (cyt-b) against a background of widespread purifying selection on all mitochondrial genes. Three of these amino acid replacements were fixed in ND4 of the geographically most widespread E. australis lineage. The other two replacements were fixed in ND4L and cyt-b of the geographically more restricted E. australis lineage. We discuss whether this selection may reflect local environmental adaptation, a by-product of other selective processes, or genetic incompatibilities, and propose how these hypotheses can be tested in future.
journal_name
Mol Ecoljournal_title
Molecular ecologyauthors
Morales HE,Pavlova A,Joseph L,Sunnucks Pdoi
10.1111/mec.13203subject
Has Abstractpub_date
2015-06-01 00:00:00pages
2820-37issue
11eissn
0962-1083issn
1365-294Xjournal_volume
24pub_type
杂志文章abstract::Despite its inherent costs, sexual reproduction is ubiquitous in nature, and the mechanisms to protect it from a competitive displacement by asexuality remain unclear. Popular mutation-based explanations, like the Muller's ratchet and the Kondrashov's hatchet, assume that purifying selection may not halt the accumulat...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.15539
更新日期:2020-08-01 00:00:00
abstract::The success of coral reefs is due to obligate mutualistic symbioses involving invertebrates and photosynthetic dinoflagellate symbionts belonging to the genus Symbiodinium. In the Caribbean, the vast majority of octocorals and other invertebrate hosts associate with Symbiodinium clade B, and more selectively, with a s...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1046/j.1365-294x.2003.02058.x
更新日期:2004-02-01 00:00:00
abstract::Christmas Island is located at the overlap of the Indian and Pacific Ocean marine provinces and is a hot spot for marine hybridization. Here, we evaluate the ecological framework and genetic consequences of hybridization between butterflyfishes Chaetodon guttatissimus and Chaetodon punctatofasciatus. Further, we compa...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.12762
更新日期:2014-06-01 00:00:00
abstract::Transgenic plants expressing resistance to herbivorous insects may represent a safe and sustainable pest control alternative if they do not interfere with the natural enemies of target pests. Here we examined interactions between oryzacystatin I (OCI), a proteinase inhibitor from rice genetically engineered into potat...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1046/j.1365-294x.2003.01918.x
更新日期:2003-09-01 00:00:00
abstract::Mitochondrial DNA sequence data for 295 individuals of the marine bivalve Macoma balthica (L.) were collected from 10 sites across the European distribution, and from Alaska. The data were used to infer population subdivision history and estimate current levels of gene flow. Inferred historical biogeography was expect...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1046/j.1365-294x.2003.01872.x
更新日期:2003-08-01 00:00:00
abstract::Over the past 100 years, Arctic temperatures have increased at almost twice the global average rate. One consequence is the acceleration of glacier retreat, exposing new habitats that are colonized by microorganisms whose diversity and function are unknown. Here, we characterized bacterial diversity along two approxim...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2009.04479.x
更新日期:2010-03-01 00:00:00
abstract::Genetic divergence of populations in the presence of gene flow is a central theme in speciation research. Theory predicts that divergence can happen with full range overlap - in sympatry - driven by ecological factors, but there are few empirical examples of how ecologically divergent selection can overcome gene flow ...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.15791
更新日期:2021-01-07 00:00:00
abstract::Climatic conditions and landscape features often strongly affect species' local distribution patterns, dispersal, reproduction and survival and may therefore have considerable impacts on species' fine-scale spatial genetic structure (SGS). In this study, we demonstrate the efficacy of combining fine-scale SGS analyses...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2011.05372.x
更新日期:2012-01-01 00:00:00
abstract::Phylogeographic patterns in Macrodon ancylodon sampled from 12 locations across all its range were investigated using mitochondrial DNA cytochrome b sequences, and analysed together with patterns of morphometric differentiation. Populations of the North Brazil and the Brazil currents, with warmer waters, form a clade ...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2006.03108.x
更新日期:2006-12-01 00:00:00
abstract::Monarch butterflies are known for their spectacular annual migration in eastern North America, with millions of monarchs flying up to 4,500 km to overwintering sites in central Mexico. Monarchs also live west of the Rocky Mountains, where they travel shorter distances to overwinter along the Pacific Coast. It is often...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.15508
更新日期:2020-07-01 00:00:00
abstract::The life cycles and dispersal of edible fungi are still poorly known, thus limiting our understanding of their evolution and domestication. The prized Tuber melanosporum produces fruitbodies (fleshy organs where meiospores mature) gathered in natural, spontaneously inoculated forests or harvested in plantations of nur...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.13864
更新日期:2016-11-01 00:00:00
abstract::Copy number variants (CNVs) are a major component of genotypic and phenotypic variation in genomes. To date, our knowledge of genotypic variation and evolution has largely been acquired by means of single nucleotide polymorphism (SNPs) analyses. Until recently, the adaptive role of structural variants (SVs) and partic...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.15565
更新日期:2020-12-01 00:00:00
abstract::The Baltic Sea provides a unique model system for studying genetic effects of postglacial colonization and ecological differentiation, because all marine organisms must have immigrated after the opening of the Danish Straits 8000 years ago and responded to the development of the steep Skagerrak-Baltic salinity gradien...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1046/j.1365-294x.2002.01601.x
更新日期:2002-10-01 00:00:00
abstract::Understanding the origin of new species is a central goal in evolutionary biology. Diverging lineages often evolve highly heterogeneous patterns of genetic differentiation; however, the underlying mechanisms are not well understood. We investigated evolutionary processes governing genetic differentiation between the h...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.15571
更新日期:2020-09-01 00:00:00
abstract::The evolution of resistance to drugs and pesticides poses a major threat to human health and food security. Neonicotinoids are highly effective insecticides used to control agricultural pests. They target the insect nicotinic acetylcholine receptor and mutations of the receptor that confer resistance have been slow to...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.15503
更新日期:2020-07-01 00:00:00
abstract::Population studies have revealed that the fungal ectomycorrhizal morphospecies Tricholoma scalpturatum consists of at least two genetically distinct groups that occur sympatrically in several geographical areas. This discovery prompted us to examine species boundaries and relationships between members formerly assigne...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2010.04863.x
更新日期:2010-12-01 00:00:00
abstract::Tropical forests have a high diversity of plant species; are they associated with a correspondingly rich microbial flora? We addressed this question by examining the symbiotic rhizobium bacteria that nodulate a diverse pool of forest legume species in Brazil. The 44 strains studied had been isolated from 29 legume tre...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1046/j.1365-294x.1998.00411.x
更新日期:1998-07-01 00:00:00
abstract::Greater prairie-chickens (Tympanuchus cupido pinnatus) were once found throughout the tallgrass prairie of midwestern North America but over the last century these prairies have been lost or fragmented by human land use. As a consequence, many current populations of prairie-chickens have become isolated and small. Thi...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1046/j.1365-294x.2003.02013.x
更新日期:2003-12-01 00:00:00
abstract::The Mound-building mouse Mus spicilegus possesses a unique behaviour amongst mice. It constructs large earthen mounds and associated nesting chambers which serve to store food for immature individuals during the winter nesting period. We have used genetic analysis of four autosomal and four X-linked microsatellite loc...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1046/j.1365-294x.1997.00278.x
更新日期:1997-11-01 00:00:00
abstract::To obtain further information on the polyploid dynamics of the the Dactylorhiza incarnata/maculata polyploid complex and the origin of the allotetraploid D. sphagnicola (Orchidaceae), plastid DNA variation was studied in 400 plants from from Sweden and elsewhere in Europe and Asia Minor by means of polymerase chain re...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1046/j.1365-294x.2003.01930.x
更新日期:2003-10-01 00:00:00
abstract::Discovering cryptic species in well-studied areas and taxonomic groups can have profound implications in understanding eco-evolutionary processes and in nature conservation because such groups often involve research models and act as flagship taxa for nature management. In this study, we use an array of techniques to ...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.13756
更新日期:2016-09-01 00:00:00
abstract::Invasive species' success may depend strongly on the genetic resources they maintain through the invasion process. We ask how many introductions have occurred in the North American weed Centaurea stoebe micranthos (Asteraceae), and explore whether genetic diversity and population structure have changed as a result of ...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294x.2008.03903.x
更新日期:2008-10-01 00:00:00
abstract::Sex chromosomes are believed to be stable in endotherms, but young and evolutionary unstable in most ectothermic vertebrates. Within lacertids, the widely radiated lizard group, sex chromosomes have been reported to vary in morphology and heterochromatinization, which may suggest turnovers during the evolution of the ...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.13635
更新日期:2016-07-01 00:00:00
abstract::Achieving long-term persistence of species in urbanized landscapes requires characterizing population genetic structure to understand and manage the effects of anthropogenic disturbance on connectivity. Urbanization over the past century in coastal southern California has caused both precipitous loss of coastal sage s...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.13176
更新日期:2015-05-01 00:00:00
abstract::Medicago citrina is an endangered western Mediterranean endemic that grows only on small islets of the Balearic archipelago and off the eastern Spanish coast. Only 10 isolated subpopulations are currently known (four from Ibiza, three from Cabrera, two from Columbretes and one from an offshore islet in northern Alican...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2004.02289.x
更新日期:2004-09-01 00:00:00
abstract::Hybrid zones are important windows into ecological and evolutionary processes. Our understanding of the significance and prevalence of hybridization in nature has expanded with the generation and analysis of genome-spanning data sets. That said, most hybridization research still has restricted temporal and spatial res...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.15514
更新日期:2020-08-01 00:00:00
abstract::There is a long tradition of artificially stocking lakes and rivers with fish in the hope to increase the quality and amount of fish that can be harvested. The animals used for stocking often originate in distant hatcheries or hatcheries that breed fish from remote regions. This stocking practice could have effects on...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1046/j.1365-294x.2002.01498.x
更新日期:2002-06-01 00:00:00
abstract::Clarification of the genetic structure and population history of a species can shed light on the impacts of landscapes, historical climate change and contemporary human activities and thus enables evidence-based conservation decisions for endangered organisms. The red panda (Ailurus fulgens) is an endangered species d...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2011.05126.x
更新日期:2011-07-01 00:00:00
abstract::Elucidating the complex evolutionary armory that mosquitoes deploy against insecticides is crucial to maintain the effectiveness of insecticide-based interventions. Here, we deciphered the role of a 6.5-kb structural variation (SV) in driving cytochrome P450-mediated pyrethroid resistance in the malaria vector, Anophe...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.15645
更新日期:2020-11-01 00:00:00
abstract::Despite no obvious barriers to gene flow in the marine realm, environmental variation and ecological specializations can lead to genetic differentiation in highly mobile predators. Here, we investigated the genetic structure of the harbour porpoise over the entire species distribution range in western Palearctic water...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.12817
更新日期:2014-07-01 00:00:00