journal
MENU ▼
Read by QxMD icon Read
search

BMC Evolutionary Biology

journal
https://www.readbyqxmd.com/read/28109265/population-genetics-of-mouse-lemur-vomeronasal-receptors-current-versus-past-selection-and-demographic-inference
#1
Philipp Hohenbrink, Nicholas I Mundy, Ute Radespiel
BACKGROUND: A major effort is underway to use population genetic approaches to identify loci involved in adaptation. One issue that has so far received limited attention is whether loci that show a phylogenetic signal of positive selection in the past also show evidence of ongoing positive selection at the population level. We address this issue using vomeronasal receptors (VRs), a diverse gene family in mammals involved in intraspecific communication and predator detection. In mouse lemurs, we previously demonstrated that both subfamilies of VRs (V1Rs and V2Rs) show a strong signal of directional selection in interspecific analyses...
January 21, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/28103815/oviposition-traits-generate-extrinsic-postzygotic-isolation-between-two-pine-sawfly-species
#2
Emily E Bendall, Kim L Vertacnik, Catherine R Linnen
BACKGROUND: Although empirical data indicate that ecological speciation is prevalent in nature, the relative importance of different forms of reproductive isolation and the traits generating reproductive isolation remain unclear. To address these questions, we examined a pair of ecologically divergent pine-sawfly species: while Neodiprion pinetum specializes on a thin-needled pine (Pinus strobus), N. lecontei utilizes thicker-needled pines. We hypothesized that extrinsic postzygotic isolation is generated by oviposition traits...
January 19, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/28103805/evolutionary-history-of-podarcis-tiliguerta-on-corsica-and-sardinia
#3
V Rodríguez, J M Buades, R P Brown, B Terrasa, V Pérez-Mellado, C Corti, M Delaugerre, J A Castro, A Picornell, M M Ramon
BACKGROUND: Podarcis tiliguerta is a wall lizard endemic to the Mediterranean islands of Corsica and Sardinia. Previous findings of high mtDNA and morphological diversity have led to the suggestion that it may represent a species complex. Here, we analysed mitochondrial and nuclear markers (mtDNA, 3110 bp; 6 nDNA loci, 3961 bp) in P. tiliguerta sampled from thirty-two localities across Corsica and Sardinia. RESULTS: We find much greater intraspecific genetic divergence than between sister species of other Mediterranean island Podarcis, i...
January 19, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/28103796/phylogenomic-analysis-of-copepoda-arthropoda-crustacea-reveals-unexpected-similarities-with-earlier-proposed-morphological-phylogenies
#4
Seong-Il Eyun
BACKGROUND: Copepods play a critical role in marine ecosystems but have been poorly investigated in phylogenetic studies. Morphological evidence supports the monophyly of copepods, whereas interordinal relationships continue to be debated. In particular, the phylogenetic position of the order Harpacticoida is still ambiguous and inconsistent among studies. Until now, a small number of molecular studies have been done using only a limited number or even partial genes and thus there is so far no consensus at the order-level...
January 19, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/28103795/lineage-specific-duplication-of-amphioxus-retinoic-acid-degrading-enzymes-cyp26-resulted-in-sub-functionalization-of-patterning-and-homeostatic-roles
#5
João E Carvalho, Maria Theodosiou, Jie Chen, Pascale Chevret, Susana Alvarez, Angel R De Lera, Vincent Laudet, Jenifer C Croce, Michael Schubert
BACKGROUND: During embryogenesis, tight regulation of retinoic acid (RA) availability is fundamental for normal development. In parallel to RA synthesis, a negative feedback loop controlled by RA catabolizing enzymes of the cytochrome P450 subfamily 26 (CYP26) is crucial. In vertebrates, the functions of the three CYP26 enzymes (CYP26A1, CYP26B1, and CYP26C1) have been well characterized. By contrast, outside vertebrates, little is known about CYP26 complements and their biological roles...
January 19, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/28103791/high-virulence-does-not-necessarily-impede-viral-adaptation-to-a-new-host-a-case-study-using-a-plant-rna-virus
#6
Anouk Willemsen, Mark P Zwart, Santiago F Elena
BACKGROUND: Theory suggests that high virulence could hinder between-host transmission of microparasites, and that virulence therefore will evolve to lower levels. Alternatively, highly virulent microparasites could also curtail host development, thereby limiting both the host resources available to them and their own within-host effective population size. In this case, high virulence might restrain the mutation supply rate and increase the strength with which genetic drift acts on microparasite populations...
January 19, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/28100168/effects-of-pleistocene-sea-level-fluctuations-on-mangrove-population-dynamics-a-lesson-from-sonneratia-alba
#7
Yuchen Yang, Jianfang Li, Shuhuan Yang, Xinnian Li, Lu Fang, Cairong Zhong, Norman C Duke, Renchao Zhou, Suhua Shi
BACKGROUND: A large-scale systematical investigation of the influence of Pleistocene climate oscillation on mangrove population dynamics could enrich our knowledge about the evolutionary history during times of historical climate change, which in turn may provide important information for their conservation. RESULTS: In this study, phylogeography of a mangrove tree Sonneratia alba was studied by sequencing three chloroplast fragments and seven nuclear genes. A low level of genetic diversity at the population level was detected across its range, especially at the range margins, which was mainly attributed to the steep sea-level drop and associated climate fluctuations during the Pleistocene glacial periods...
January 18, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/28086786/widespread-introgression-in-deep-sea-hydrothermal-vent-mussels
#8
Corinna Breusing, Robert C Vrijenhoek, Thorsten B H Reusch
BACKGROUND: The analysis of hybrid zones is crucial for gaining a mechanistic understanding of the process of speciation and the maintenance of species boundaries. Hybrid zones have been studied intensively in terrestrial and shallow-water ecosystems, but very little is known about their occurrence in deep-sea environments. Here we used diagnostic, single nucleotide polymorphisms in combination with one mitochondrial gene to re-examine prior hypotheses about a contact zone involving deep-sea hydrothermal vent mussels, Bathymodiolus azoricus and B...
January 13, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/28086751/quantifying-predictors-for-the-spatial-diffusion-of-avian-influenza-virus-in-china
#9
Lu Lu, Andrew J Leigh Brown, Samantha J Lycett
BACKGROUND: Avian influenza virus (AIV) causes both severe outbreaks and endemic disease among poultry and has caused sporadic human infections in Asia, furthermore the routes of transmission in avian species between geographic regions can be numerous and complex. Using nucleotide sequences from the internal protein coding segments of AIV, we performed a Bayesian phylogeographic study to uncover regional routes of transmission and factors predictive of the rate of viral diffusion within China...
January 13, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/28086750/a-genome-wide-scan-for-genes-under-balancing-selection-in-drosophila-melanogaster
#10
Myriam Croze, Andreas Wollstein, Vedran Božičević, Daniel Živković, Wolfgang Stephan, Stephan Hutter
BACKGROUND: In the history of population genetics balancing selection has been considered as an important evolutionary force, yet until today little is known about its abundance and its effect on patterns of genetic diversity. Several well-known examples of balancing selection have been reported from humans, mice, plants, and parasites. However, only very few systematic studies have been carried out to detect genes under balancing selection. We performed a genome scan in Drosophila melanogaster to find signatures of balancing selection in a derived (European) and an ancestral (African) population...
January 13, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/28086749/evolution-of-the-angiopoietin-like-gene-family-in-teleosts-and-their-role-in-skin-regeneration
#11
Rita A Costa, João C R Cardoso, Deborah M Power
BACKGROUND: The skin in vertebrates is a protective barrier and damage is rapidly repaired to re-establish barrier function and maintain internal homeostasis. The angiopoietin-like (ANGPTL) proteins are a family of eight secreted glycoproteins with an important role in skin repair and angiogenesis in humans. In other vertebrates their existence and role in skin remains largely unstudied. The present study characterizes for the first time the homologues of human ANGPTLs in fish and identifies the candidates that share a conserved role in skin repair using a regenerating teleost skin model over a 4-day healing period...
January 13, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/28086748/genetic-mechanisms-of-bone-digestion-and-nutrient-absorption-in-the-bone-eating-worm-osedax-japonicus-inferred-from-transcriptome-and-gene-expression-analyses
#12
Norio Miyamoto, Masa-Aki Yoshida, Hiroyuki Koga, Yoshihiro Fujiwara
BACKGROUND: Bone-eating worms of the genus Osedax (Annelida, Siboglinidae) have adapted to whale fall environments by acquiring a novel characteristic called the root, which branches and penetrates into sunken bones. The worms lack a digestive tract and mouth opening, and it has been suggested that Osedax degrade vertebrate bones and uptake nutrients through acidification and secretion of enzymes from the root. Symbiotic bacteria in the root tissue may have a crucial role in the metabolism of Osedax...
January 13, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/28077092/phylogenetic-analysis-of-ionotropic-l-glutamate-receptor-genes-in-the-bilateria-with-special-notes-on-aplysia-californica
#13
Justin B Greer, Sawsan Khuri, Lynne A Fieber
BACKGROUND: The neurotransmitter L-Glutamate (L-Glu) acting at ionotropic L-Glu receptors (iGluR) conveys fast excitatory signal transmission in the nervous systems of all animals. iGluR-dependent neurotransmission is a key component of the synaptic plasticity that underlies learning and memory. During learning, two subtypes of iGluR, α-Amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptors (AMPAR) and N-methyl-D-aspartate receptors (NMDAR), are dynamically regulated postsynaptically in vertebrates...
January 11, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/28077086/the-measure-of-success-geographic-isolation-promotes-diversification-in-pachydactylus-geckos
#14
Matthew P Heinicke, Todd R Jackman, Aaron M Bauer
BACKGROUND: Geckos of the genus Pachydactylus and their close relatives comprise the most species-rich clade of lizards in sub-Saharan Africa. Many explanations have been offered to explain species richness patterns of clades. In the Pachydactylus group, one possible explanation is a history of diversification via geographic isolation. If geographic isolation has played a key role in facilitating diversification, then we expect species in more species-rich subclades to have smaller ranges than species in less diverse subclades...
January 11, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/28077068/structure-and-evolution-of-the-filaggrin-gene-repeated-region-in-primates
#15
Vanessa Romero, Kazuyoshi Hosomichi, Hirofumi Nakaoka, Hiroki Shibata, Ituro Inoue
BACKGROUND: The evolutionary dynamics of repeat sequences is quite complex, with some duplicates never having differentiated from each other. Two models can explain the complex evolutionary process for repeated genes-concerted and birth-and-death, of which the latter is driven by duplications maintained by selection. Copy number variations caused by random duplications and losses in repeat regions may modulate molecular pathways and therefore affect phenotypic characteristics in a population, resulting in individuals that are able to adapt to new environments...
January 11, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/28073352/you-are-what-you-eat-diet-shapes-body-composition-personality-and-behavioural-stability
#16
Chang S Han, Niels J Dingemanse
BACKGROUND: Behavioural phenotypes vary within and among individuals. While early-life experiences have repeatedly been proposed to underpin interactions between these two hierarchical levels, the environmental factors causing such effects remain under-studied. We tested whether an individual's diet affected both its body composition, average behaviour (thereby causing among-individual variation or 'personality') and within-individual variability in behaviour and body weight (thereby causing among-individual differences in residual within-individual variance or 'stability'), using the Southern field cricket Gryllus bimaculatus as a model...
January 10, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/28056761/quantifying-camouflage-how-to-predict-detectability-from-appearance
#17
Jolyon Troscianko, John Skelhorn, Martin Stevens
BACKGROUND: Quantifying the conspicuousness of objects against particular backgrounds is key to understanding the evolution and adaptive value of animal coloration, and in designing effective camouflage. Quantifying detectability can reveal how colour patterns affect survival, how animals' appearances influence habitat preferences, and how receiver visual systems work. Advances in calibrated digital imaging are enabling the capture of objective visual information, but it remains unclear which methods are best for measuring detectability...
January 6, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/28056776/evidence-for-genetic-variation-in-natterer-s-bats-myotis-nattereri-across-three-regions-in-germany-but-no-evidence-for-co-variation-with-their-associated-astroviruses
#18
Tanja K Halczok, Kerstin Fischer, Robert Gierke, Veronika Zeus, Frauke Meier, Christoph Treß, Anne Balkema-Buschmann, Sébastien J Puechmaille, Gerald Kerth
BACKGROUND: As bats have recently been described to harbor many different viruses, several studies have investigated the genetic co-variation between viruses and different bat species. However, little is known about the genetic co-variation of viruses and different populations of the same bat species, although such information is needed for an understanding of virus transmission dynamics within a given host species. We hypothesized that if virus transmission between host populations depends on events linked to gene flow in the bats, genetic co-variation should exist between host populations and astroviruses...
January 5, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/28056768/a-combination-of-long-term-fragmentation-and-glacial-persistence-drove-the-evolutionary-history-of-the-italian-wall-lizard-podarcis-siculus
#19
Gabriele Senczuk, Paolo Colangelo, Emanuela De Simone, Gaetano Aloise, Riccardo Castiglia
BACKGROUND: The current distribution of genetic diversity is the result of a vast array of microevolutionary processes, including short-term demographic and ecological mechanisms and long-term allopatric isolation in response to Quaternary climatic fluctuations. We investigated past processes that drove the population differentiation and spatial genetic distribution of the Italian wall lizard Podarcis siculus by means of sequences of mitochondrial cytb (n = 277 from 115 localities) and nuclear mc1r and β-fibint7genes (n = 262 and n = 91, respectively) from all its distribution range...
January 5, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/28049420/horizontal-gene-transfer-drives-the-evolution-of-rh50-permeases-in-prokaryotes
#20
Giorgio Matassi
BACKGROUND: Rh50 proteins belong to the family of ammonia permeases together with their Amt/MEP homologs. Ammonia permeases increase the permeability of NH3/NH4(+) across cell membranes and are believed to be involved in excretion of toxic ammonia and in the maintenance of pH homeostasis. RH50 genes are widespread in eukaryotes but absent in land plants and fungi, and remarkably rare in prokaryotes. The evolutionary history of RH50 genes in prokaryotes is just beginning to be unveiled...
January 3, 2017: BMC Evolutionary Biology
journal
journal
35553
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"