journal
MENU ▼
Read by QxMD icon Read
search

Molecular Ecology

journal
https://www.readbyqxmd.com/read/28926207/seasonal-rather-than-spatial-variability-drives-planktonic-and-benthic-bacterial-diversity-in-a-microtidal-lagoon-and-the-adjacent-open-sea
#1
G M Quero, L Perini, G Pesole, C Manzari, C Lionetti, M Bastianini, M Marini, G M Luna
Coastal lagoons are highly productive ecosystems, which are experiencing a variety of human disturbances at increasing frequency. Bacteria are key ecological players within lagoons, yet little is known about the magnitude, patterns and drivers of diversity in these transitional environments. We carried out a seasonal study in the Venice Lagoon (Italy) and the adjacent sea, to simultaneously explore diversity patterns in different domains (pelagic, benthic) and their spatio-temporal variability, and test the role of environmental gradients in structuring assemblages...
September 19, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28926167/disentangling-environmental-and-host-sources-of-fungal-endophyte-communities-in-an-experimental-beachgrass-study
#2
Aaron S David, Eric W Seabloom, Georgiana May
Disentangling the ecological factors that contribute to the assembly of the microbial symbiont communities within eukaryotic hosts is an ongoing challenge. Broadly speaking, symbiont propagules arrive either from external sources in the environment or from internal sources within the same host individual. To understand the relative importance of these propagule sources to symbiont community assembly, we characterized symbiotic fungal endophyte communities within the roots of three species of beachgrass in a field experiment...
September 19, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28926160/adult-plasticity-in-african-cichlids-rapid-changes-in-opsin-expression-in-response-to-environmental-light-differences
#3
Sri Pratima Nandamuri, Miranda R Yourick, Karen L Carleton
Phenotypic plasticity allows organisms to adapt quickly to local environmental conditions and could facilitate adaptive radiations. Cichlids have recently undergone an adaptive radiation in Lake Malawi where they inhabit diverse light environments and tune their visual sensitivity through differences in cone opsin expression. While cichlid opsin expression is known to be plastic over development, whether adults remain plastic is unknown. Adult plasticity in visual tuning could play a role in cichlid radiations by enabling survival in changing environments and facilitating invasion into novel environments...
September 19, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28926158/selection-on-a-behaviour-related-gene-during-the-first-stages-of-the-biological-invasion-pathway
#4
J C Mueller, P Edelaar, A Baños-Villalba, M Carrete, J Potti, J Blas, J L Tella, B Kempenaers
Human-induced biological invasions are common worldwide and often have negative impacts on wildlife and human societies. Several studies have shown evidence for selection on invaders after introduction to the new range. However, selective processes already acting prior to introduction have been largely neglected. Here we tested whether such early selection acts on known behaviour-related gene variants in the yellow-crowned bishop (Euplectes afer), a pet-traded African songbird. We tested for non-random allele frequency changes after trapping, acclimation and survival in captivity...
September 19, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28926156/the-roles-of-plasticity-and-evolutionary-change-in-shaping-gene-expression-variation-in-natural-populations-of-extremophile-fish
#5
Courtney N Passow, Chathurika Henpita, Jennifer H Shaw, Corey R Quackenbush, Wesley C Warren, Manfred Schartl, Lenin Arias-Rodriguez, Joanna L Kelley, Michael Tobler
The notorious plasticity of gene expression responses and the complexity of environmental gradients complicate the identification of adaptive differences in gene regulation among populations. We combined transcriptome analyses in nature with common garden and exposure experiments to establish cause and effect relationships between the presence of a physiochemical stressor and expression differences, as well as to test how evolutionary change and plasticity interact to shape gene expression variation in natural systems...
September 19, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28926155/idna-screening-disease-vectors-as-vertebrate-samplers
#6
Arthur Kocher, Benoit De Thoisy, François Catzeflis, Sophie Valiere, Anne-Laure Bañuls, Jérôme Murienne
In the current context of global change and human-induced biodiversity decline, there is an urgent need for developing sampling approaches able to accurately describe the state of biodiversity. Traditional surveys of vertebrate fauna involve time-consuming and skill-demanding field methods. Recently, the use of DNA derived from invertebrate parasites (leeches and blowflies) was suggested as a new tool for vertebrate diversity assessment. Blood meal analyses of arthropod disease vectors have long been performed to describe their feeding behaviour, for epidemiological purposes...
September 19, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28926153/comparative-and-population-genomics-landscape-of-phellinus-noxius-a-hypervariable-fungus-causing-root-rot-in-trees
#7
Chia-Lin Chung, Tracy J Lee, Mitsuteru Akiba, Hsin-Han Lee, Tzu-Hao Kuo, Dang Liu, Huei-Mien Ke, Toshiro Yokoi, Marylette B Roa, Meiyeh J Lu, Ya-Yun Chang, Pao-Jen Ann, Jyh-Nong Tsai, Chien-Yu Chen, Shean-Shong Tzean, Yuko Ota, Tsutomu Hattori, Norio Sahashi, Ruey-Fen Liou, Taisei Kikuchi, Isheng J Tsai
The order Hymenochaetales of white rot fungi contain some of the most aggressive wood decayers causing tree deaths around the world. Despite their ecological importance and the impact of diseases they cause, little is known about the evolution and transmission patterns of these pathogens. Here, we sequenced and undertook comparative genomics analyses of Hymenochaetales genomes using brown root rot fungus Phellinus noxius, wood-decomposing fungus Phellinus lamaensis, laminated root rot fungus Phellinus sulphurascens, and trunk pathogen Porodaedalea pini...
September 19, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28926149/speciation-below-ground-tempo-and-mode-of-diversification-in-a-radiation-of-endogean-ground-beetles
#8
Carmelo Andújar, Sergio Pérez-González, Paula Arribas, Juan P Zaballos, Alfried P Vogler, Ignacio Ribera
Dispersal is a critical factor determining the spatial scale of speciation, which is constrained by the ecological characteristics and distribution of a species' habitat and the intrinsic traits of species. Endogean taxa are strongly affected by the unique qualities of the below-ground environment and its effect on dispersal, and contrasting reports indicate either high dispersal capabilities favoured by small body size and mediated by passive mechanisms, or low dispersal due to restricted movement and confinement inside the soil...
September 19, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28926148/biodiversity-and-species-competition-regulate-the-resilience-of-microbial-biofilm-community
#9
Kai Feng, Zhaojing Zhang, Weiwei Cai, Wenzong Liu, Meiying Xu, Huaqun Yin, Aijie Wang, Zhili He, Ye Deng
The relationship between biodiversity and ecosystem stability is poorly understood in microbial communities. Biofilm communities in small bioreactors called microbial electrolysis cells (MEC) contain moderate species numbers and easy tractable functional traits, thus providing an ideal platform for verifying ecological theories in microbial ecosystems. Here, we investigated the resilience of biofilm communities with a gradient of diversity, and explored the relationship between biodiversity and stability in response to a pH shock...
September 19, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28921802/environmental-dna-metabarcoding-transforming-how-we-survey-animal-and-plant-communities
#10
Kristy Deiner, Holly M Bik, Elvira Mächler, Mathew Seymour, Anaïs Lacoursière-Roussel, Florian Altermatt, Simon Creer, Iliana Bista, David M Lodge, Natasha de Vere, Michael E Pfrender, Louis Bernatchez
The genomic revolution has fundamentally changed how we survey biodiversity on earth. High-throughput sequencing ('HTS') platforms now enable the rapid sequencing of DNA from diverse kinds of environmental samples (termed 'environmental DNA' or 'eDNA'). Coupling HTS with our ability to associate sequences from eDNA with a taxonomic name is called 'eDNA metabarcoding' and offers a powerful molecular tool capable of non-invasively surveying species richness from many ecosystems. Here, we review the use of eDNA metabarcoding for surveying animal and plant richness, and the challenges in using eDNA approaches to estimate relative abundance...
September 16, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28921776/transcriptional-responses-to-short-term-and-long-term-host-plant-experience-and-parasite-load-in-an-oligophagous-beetle
#11
Caroline Müller, Heiko Vogel, David G Heckel
Oligophagous herbivores must adjust their enzymatic machinery to the different host plant species they consume. If different hosts are used from one generation to the next, adaptation may be highly plastic, while if a single host is used over several generations there may be a longer-term response due to natural selection. Using an experimental evolutionary approach, we investigated effects of long-term experience versus short-term responses to different host plants in the oligophagous mustard leaf beetle Phaedon cochleariae...
September 16, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28921766/effects-of-zoochory-on-the-spatial-genetic-structure-of-plant-populations
#12
Tiziana A Gelmi-Candusso, Eckhard W Heymann, Katrin Heer
Spatial genetic structure (SGS) of plants results from the non-random distribution of related individuals. SGS provides information on gene flow and spatial patterns of genetic diversity within populations. Seed dispersal creates the spatial template for plant distribution. Thus, in zoochorous plants, dispersal mode and disperser behavior might have a strong impact on SGS. However, many studies only report the taxonomic group of seed dispersers, without further details. The recent increase in studies on SGS provides the opportunity to review findings and test for the influence of dispersal mode, taxonomic affiliation of dispersers and their behavior...
September 16, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28921805/cytochrome-p450-diversification-and-hostplant-utilization-patterns-in-specialist-and-generalist-moths-birth-death-and-adaptation
#13
Bernarda Calla, Katherine Noble, Reed M Johnson, Kimberly K O Walden, Mary A Schuler, Hugh M Robertson, May R Berenbaum
Across insect genomes, the size of the cytochrome P450 monooxygenase (CYP) gene superfamily varies widely. CYPome size variation has been attributed to reciprocal adaptive radiations in insect detoxification genes in response to plant biosynthetic gene radiations driven by coevolution between herbivores and their chemically defended hostplants. Alternatively, variation in CYPome size may be due to random "birth and death" processes, whereby exponential increase via gene duplications is limited by random decay via gene death or transition via divergence...
September 15, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28902438/colony-level-behavioral-variation-correlates-with-differences-in-expression-of-the-foraging-gene-in-red-imported-fire-ants
#14
Alison A Bockoven, Craig J Coates, Micky D Eubanks
Among social insects, colony-level variation is likely to be widespread and have significant ecological consequences. Very few studies, however, have documented how genetic factors relate to behavior at the colony level. Differences in expression of the foraging gene have been associated with differences in foraging and activity of a wide variety of organisms. We quantified expression of the red imported fire ant foraging gene (sifor) in workers from 21 colonies collected across the natural range of Texas fire ant populations, but maintained under standardized, environmentally controlled conditions...
September 13, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28892281/transgenerational-and-developmental-plasticity-at-the-molecular-level-lessons-from-daphnia
#15
Alison M Bell, Laura R Stein
Listen to the news and you are bound to hear that researchers are increasingly interested in the biological manifestations of trauma that reverberate through the generations. Research in this area can be controversial in the public realm, provoking societal issues about personal responsibility (are we really born free or are we born with the burden of our ancestors' experience?). It is also a touchy subject within evolutionary biology because it provokes concerns about Lamarckianism and general scepticism about the importance of extra-genetic inheritance (Laland et al...
September 11, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28881498/local-environment-rather-than-past-climate-determines-community-composition-of-mountain-stream-macroinvertebrates-across-europe
#16
Cesc Múrria, Núria Bonada, Mark Vellend, Carmen Zamora-Muñoz, Javier Alba-Tercedor, Carmen Elisa Sainz-Cantero, Josefina Garrido, Raul Acosta, Majida El Alami, Jose Barquín, Tomáš Derka, Mario Álvarez-Cabria, Marta Sáinz-Bariain, Ana F Filipe, Alfried P Vogler
Community assembly is determined by a combination of historical events and contemporary processes that are difficult to disentangle, but eco-evolutionary mechanisms may be uncovered by the joint analysis of species and genetic diversity across multiple sites. Mountain streams across Europe harbour highly diverse macroinvertebrate communities whose composition and turnover (replacement of taxa) among sites and regions remain poorly known. We studied whole-community biodiversity within and among six mountain regions along a latitudinal transect from Morocco to Scandinavia at three levels of taxonomic hierarchy: genus, species and haplotypes...
September 7, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28881403/differentiation-of-movement-behavior-in-an-adaptively-diverging-salamander-population
#17
Ralf Hendrix, Benedikt R Schmidt, Michael Schaub, E Tobias Krause, Sebastian Steinfartz
Dispersal is considered to be a species-specific trait, but intraspecific variation can be high. However, when and how this complex trait starts to differentiate during the divergence of species/lineages is unknown. Here, we studied the differentiation of movement behavior in a large salamander population (Salamandra salamandra), in which individual adaptations to different habitat conditions drive the genetic divergence of this population into two subpopulations. In this system, salamanders have adapted to the deposition and development of their larvae in ephemeral ponds versus small first order streams...
September 7, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28872211/genomic-signatures-of-evolution-in-nautilus-an-endangered-living-fossil
#18
David J Combosch, Sarah Lemer, Peter D Ward, Neil H Landman, Gonzalo Giribet
Living fossils are survivors of previously more diverse lineages that originated millions of years ago and persisted with little morphological change. Therefore, living fossils are model organisms to study both long-term and ongoing adaptation and speciation processes. However, many aspects of living fossils evolution and their persistence in the modern world remain unclear. Here, we investigate three major aspects of the evolutionary history of living fossils: cryptic speciation, population genetics, and effective population sizes; using members of the genera Nautilus and Allonautilus as classic examples of true living fossils...
September 4, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28869687/ancestral-acquisitions-gene-flow-and-multiple-evolutionary-trajectories-of-the-type-three-secretion-system-and-effectors-in-xanthomonas-plant-pathogens
#19
Déborah Merda, Martial Briand, Eran Bosis, Céline Rousseau, Perrine Portier, Matthieu Barret, Marie-Agnès Jacques, Marion Fischer-Le Saux
Deciphering the evolutionary history and transmission patterns of virulence determinants is necessary to understand the emergence of novel pathogens. The main virulence determinant of most pathogenic proteobacteria is the type three secretion system (T3SS). The Xanthomonas genus includes bacteria responsible for numerous epidemics in agroecosystems worldwide and represents a major threat to plant health. The main virulence factor of Xanthomonas is the Hrp2 family T3SS, however this system is not conserved in all strains and it has not been previously determined whether the distribution of T3SS in this bacterial genus has resulted from losses or independent acquisitions...
September 4, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28862778/evidence-of-genomic-adaptation-to-climate-in-eucalyptus-microcarpa-implications-for-adaptive-potential-to-projected-climate-change
#20
Rebecca Jordan, Ary A Hoffmann, Shannon K Dillon, Suzanne M Prober
Understanding whether populations can adapt in situ or whether interventions are required is of key importance for biodiversity management under climate change. Landscape genomics is becoming an increasingly important and powerful tool for rapid assessments of climate adaptation, especially in long-lived species such as trees. We investigated climate adaptation in Eucalyptus microcarpa using the DArTseq genomic approach. A combination of FST outlier and environmental association analyses were performed using > 4,200 genome-wide single nucleotide polymorphisms (SNPs) from 26 populations spanning climate gradients in south-eastern Australia...
September 1, 2017: Molecular Ecology
journal
journal
31156
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"