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You searched for: Journal name Molecular ecology Remove constraint Journal name: Molecular ecology Publication year rev 7981-2019 Remove constraint Publication year rev: 7981-2019 Source 2019 v.28 no.16 Remove constraint Source: 2019 v.28 no.16
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1. 31° South: The physiology of adaptation to arid conditions in a passerine bird

Author:
Ângela M. Ribeiro; Lara Puetz; Nicholas B. Pattinson; Love Dalén; Yuan Deng; Guojie Zhang; Rute R. da Fonseca; Ben Smit; M. Thomas P. Gilbert
Source:
Molecular ecology 2019 v.28 no.16 pp. 3709-3721
ISSN:
0962-1083
Subject:
Passeriformes; biochemical pathways; birds; deserts; dry environmental conditions; endothermy; energy expenditure; evolutionary adaptation; genes; genetic variation; homeostasis; intestinal microorganisms; intraspecific variation; metabolism; microbiome; phenotype; phenotypic plasticity; primary productivity; temperature
Abstract:
... Arid environments provide ideal ground for investigating the mechanisms of adaptive evolution. High temperatures and low water availability are relentless stressors for many endotherms, including birds; yet birds persist in deserts. While physiological adaptation probably involves metabolic phenotypes, the underlying mechanisms (plasticity, genetics) are largely uncharacterized. To explore this, w ...
DOI:
10.1111/mec.15176

2. Boomeranging around Australia: Historical biogeography and population genomics of the anti‐equatorial fish Microcanthus strigatus (Teleostei: Microcanthidae)

Author:
Yi‐Kai Tea; Cara Van Der Wal; William B. Ludt; Anthony C. Gill; Nathan Lo; Simon Y. W. Ho
Source:
Molecular ecology 2019 v.28 no.16 pp. 3771-3785
ISSN:
0962-1083
Subject:
Microcanthus strigatus; Pleistocene epoch; biogeography; center of origin; cryptic species; fauna; gene flow; geographical distribution; latitude; marine fish; metagenomics; mitochondria; nuclear genome; single nucleotide polymorphism; temperate zones; tropics; East Asia; Hawaii; Western Australia
Abstract:
... The geographic distributions of marine fishes have been shaped by ancient vicariance and ongoing dispersal events. Some species exhibit anti‐equatorial distributions, inhabiting temperate regions on both sides of the tropics while being absent from equatorial latitudes. The perciform fish Microcanthus strigatus (the stripey) exhibits such a distribution with disjunct populations occurring in East ...
DOI:
10.1111/mec.15172

3. Convergent vomeronasal system reduction in mammals coincides with convergent losses of calcium signalling and odorant‐degrading genes

Author:
Nikolai Hecker; Ulla Lächele; Heiko Stuckas; Peter Giere; Michael Hiller
Source:
Molecular ecology 2019 v.28 no.16 pp. 3656-3668
ISSN:
0962-1083
Subject:
Chiroptera; Phocidae; Primates; aldehydes; calcium signaling; calcium-binding proteins; environmental factors; enzymes; epithelium; evolution; gene silencing; genes; genetic markers; genomics; ion channels; niches; odor compounds; olfactory bulb; seals; sexual behavior; vomeronasal organ
Abstract:
... The vomeronasal system (VNS) serves crucial functions for detecting olfactory clues often related to social and sexual behaviour. Intriguingly, two of the main components of the VNS, the vomeronasal organ (VNO) and the accessory olfactory bulb, are regressed in aquatic mammals, several bats and primates, likely due to adaptations to different ecological niches. To detect genomic changes that are a ...
DOI:
10.1111/mec.15180

4. Early life social and ecological determinants of global DNA methylation in wild spotted hyenas

Author:
Zachary M. Laubach; Christopher D. Faulk; Dana C. Dolinoy; Luke Montrose; Tamara R. Jones; Donna Ray; Malit O. Pioon; Kay E. Holekamp
Source:
Molecular ecology 2019 v.28 no.16 pp. 3799-3812
ISSN:
0962-1083
Subject:
Crocuta crocuta; DNA methylation; adults; age structure; anthropogenic activities; environmental factors; genome; litter size; livestock; mothers; phenotype; progeny; ungulates; Kenya
Abstract:
... Environmental factors early in life can have lasting influence on the development and phenotypes of animals, but the underlying molecular modifications remain poorly understood. We examined cross‐sectional associations among early life socioecological factors and global DNA methylation in 293 wild spotted hyenas (Crocuta crocuta) in the Masai Mara National Reserve, Kenya, grouped according to thre ...
DOI:
10.1111/mec.15174

5. Telomere attrition predicts reduced survival in a wild social bird, but short telomeres do not

Author:
Emma M. Wood; Andrew J. Young
Source:
Molecular ecology 2019 v.28 no.16 pp. 3669-3680
ISSN:
0962-1083
Subject:
adulthood; biomarkers; fledglings; hatching; nestlings; predation; telomeres
Abstract:
... Attempts to understand the causes of variation in senescence trajectories would benefit greatly from biomarkers that reflect the progressive declines in somatic integrity (SI) that lead to senescence. While telomere length has attracted considerable interest in this regard, sources of variation in telomere length potentially unrelated to declines in SI could, in some contexts, leave telomere attri ...
DOI:
10.1111/mec.15181
PubMed:
31332860
PubMed Central:
PMC6772082

6. The roles of age, parentage and environment on bacterial and algal endosymbiont communities in Acropora corals

Author:
Wing Yan Chan; Lesa M. Peplow; Patricia Menéndez; Ary A. Hoffmann; Madeleine J. H. van Oppen
Source:
Molecular ecology 2019 v.28 no.16 pp. 3830-3843
ISSN:
0962-1083
Subject:
Acropora tenuis; DNA barcoding; Symbiodiniaceae; adulthood; carbon dioxide; corals; crossing; endosymbionts; genes; host specificity; hybrids; internal transcribed spacers; juveniles; microalgae; microbial communities; microbiome; parentage; purebreds; ribosomal DNA; ribosomal RNA; temperature
Abstract:
... The bacterial and microalgal endosymbiont (Symbiodiniaceae spp.) communities associated with corals have important roles in their health and resilience, yet little is known about the factors driving their succession during early coral life stages. Using 16S rRNA gene and ITS2 metabarcoding, we compared these communities in four Acropora coral species and their hybrids obtained from two laboratory ...
DOI:
10.1111/mec.15187

7. Exposure to a competitive social environment activates an epigenetic mechanism that limits pheomelanin synthesis in zebra finches

Author:
Sol Rodríguez‐Martínez; Ismael Galván
Source:
Molecular ecology 2019 v.28 no.16 pp. 3698-3708
ISSN:
0962-1083
Subject:
DNA methylation; Taeniopygia guttata; antioxidant activity; birds; epigenetics; gene expression regulation; genes; homeostasis; males; melanocytes; oxidative stress; phenotype; pigmentation; social behavior; social environment; testosterone
Abstract:
... Competitive environments promote high testosterone levels, produce oxidative stress and, consequently, impair cellular homeostasis. The regulation of genes involved in the synthesis of the pigment pheomelanin in melanocytes seems to help to maintain homeostasis against environmental oxidative stress. Here, we experimentally increased social interactions in some zebra finch (Taeniopygia guttata) ma ...
DOI:
10.1111/mec.15171

8. Genome structure predicts modular transcriptome responses to genetic and environmental conditions

Author:
Stephanie Mark; Joerg Weiss; Eesha Sharma; Ting Liu; Wei Wang; Julie M. Claycomb; Asher D. Cutter
Source:
Molecular ecology 2019 v.28 no.16 pp. 3681-3697
ISSN:
0962-1083
Subject:
Caenorhabditis briggsae; cold; environmental factors; gene expression regulation; genes; genetic variation; genomics; genotype; genotype-environment interaction; heat shock response; heat stress; loci; natural selection; phenotypic plasticity; regulatory sequences; temperature; transcriptome
Abstract:
... Understanding the plasticity, robustness and modularity of transcriptome expression to genetic and environmental conditions is crucial to deciphering how organisms adapt in nature. To test how genome architecture influences transcriptome profiles, we quantified expression responses for distinct temperature‐adapted genotypes of the nematode Caenorhabditis briggsae when exposed to chronic temperatur ...
DOI:
10.1111/mec.15185

9. Genome‐wide variation in DNA methylation is associated with stress resilience and plumage brightness in a wild bird

Author:
Conor C. Taff; Leonardo Campagna; Maren N. Vitousek
Source:
Molecular ecology 2019 v.28 no.16 pp. 3722-3737
ISSN:
0962-1083
Subject:
DNA methylation; Tachycineta bicolor; biomarkers; breasts; females; genome; glucocorticoids; models; plumage; precipitin tests; prediction; stress response; wild birds
Abstract:
... Individuals often differ in their ability to cope with challenging environmental and social conditions. Evidence from model systems suggests that patterns of DNA methylation are associated with variation in coping ability. These associations could arise directly if methylation plays a role in controlling the physiological response to stressors by, among other things, regulating the release of gluc ...
DOI:
10.1111/mec.15186

10. Lack of gene flow: Narrow and dispersed differentiation islands in a triplet of Leptidea butterfly species

Author:
Venkat Talla; Anna Johansson; Vlad Dincă; Roger Vila; Magne Friberg; Christer Wiklund; Niclas Backström
Source:
Molecular ecology 2019 v.28 no.16 pp. 3756-3770
ISSN:
0962-1083
Subject:
Leptidea sinapis; butterflies; chromosome number; gene flow; genes; genetic drift; genetic variation; introgression; islands; landscapes; metabolism
Abstract:
... Genome scans in recently separated species can inform on molecular mechanisms and evolutionary processes driving divergence. Large‐scale polymorphism data from multiple species pairs are also key to investigate the repeatability of divergence—whether radiations tend to show parallel responses to similar selection pressures and/or underlying molecular forces. Here, we used whole‐genome resequencing ...
DOI:
10.1111/mec.15188

11. Land use is a determinant of plant pathogen alpha‐ but not beta‐diversity

Author:
Andreas Makiola; Ian A. Dickie; Robert J. Holdaway; Jamie R. Wood; Kate H. Orwin; Travis R. Glare
Source:
Molecular ecology 2019 v.28 no.16 pp. 3786-3798
ISSN:
0962-1083
Subject:
DNA barcoding; Oomycetes; bacteria; forests; fungi; land use; landscapes; leaves; plant pathogens; roots; soil; species diversity; variance
Abstract:
... Little is known about the diversity patterns of plant pathogens and how they change with land use at a broad scale. We employed DNA metabarcoding to describe the diversity and composition of putative plant pathogen communities in three substrates (soil, roots, and leaves) across five major land uses at a national scale. Almost all plant pathogen communities (fungi, oomycetes, and bacteria) showed ...
DOI:
10.1111/mec.15177

12. Monarch butterflies use an environmentally sensitive, internal timer to control overwintering dynamics

Author:
Delbert A. Green II; Marcus R. Kronforst
Source:
Molecular ecology 2019 v.28 no.16 pp. 3642-3655
ISSN:
0962-1083
Subject:
Danaus plexippus; calcium signaling; climate change; cold; controllers; diapause; environmental factors; epigenetics; hormonal regulation; insulin; juvenile hormones; overwintering; peptides; temperature; transcriptomics
Abstract:
... The monarch butterfly (Danaus plexippus) complements its iconic migration with diapause, a hormonally controlled developmental programme that contributes to winter survival at overwintering sites. Although timing is a critical adaptive feature of diapause, how environmental cues are integrated with genetically‐determined physiological mechanisms to time diapause development, particularly terminati ...
DOI:
10.1111/mec.15178
PubMed:
31338928
PubMed Central:
PMC6834359

13. Salinity drives meiofaunal community structure dynamics across the Baltic ecosystem

Author:
Elias Broman; Caroline Raymond; Christian Sommer; Jonas S. Gunnarsson; Simon Creer; Francisco J. A. Nascimento
Source:
Molecular ecology 2019 v.28 no.16 pp. 3813-3829
ISSN:
0962-1083
Subject:
Nematoda; animals; benthic ecosystems; benthic organisms; biodiversity; biogeochemical cycles; climate change; community structure; eutrophication; fauna; high-throughput nucleotide sequencing; hypoxia; models; organic matter; predators; rivers; runoff; salinity; sediments; Baltic Sea
Abstract:
... Coastal benthic biodiversity is under increased pressure from climate change, eutrophication, hypoxia, and changes in salinity due to increase in river runoff. The Baltic Sea is a large brackish system characterized by steep environmental gradients that experiences all of the mentioned stressors. As such it provides an ideal model system for studying the impact of on‐going and future climate chang ...
DOI:
10.1111/mec.15179
PubMed:
31332853
PubMed Central:
PMC6852176

14. Seasonal temperature, the lunar cycle and diurnal rhythms interact in a combinatorial manner to modulate genomic responses to the environment in a reef‐building coral

Author:
Daniel M. Wuitchik; DongZhuo Wang; Troy J. Pells; Kamran Karimi; Selina Ward; Peter D. Vize
Source:
Molecular ecology 2019 v.28 no.16 pp. 3629-3641
ISSN:
0962-1083
Subject:
Acropora millepora; biological clocks; circadian rhythm; coral reefs; corals; environmental factors; genes; genomics; mammals; messenger RNA; models; ribonucleoproteins; sequence analysis; spawning; stress response; temperature; transcription (genetics); transcriptomics
Abstract:
... Rhythms of various periodicities drive cyclical processes in organisms ranging from single cells to the largest mammals on earth, and on scales from cellular physiology to global migrations. The molecular mechanisms that generate circadian behaviours in model organisms have been well studied, but longer phase cycles and interactions between cycles with different periodicities remain poorly underst ...
DOI:
10.1111/mec.15173
PubMed:
31294494
PubMed Central:
PMC6851572

15. Variable hybridization outcomes in trout are predicted by historical fish stocking and environmental context

Author:
Elizabeth G. Mandeville; Annika W. Walters; Brittany J. Nordberg; Karly H. Higgins; Jason C. Burckhardt; Catherine E. Wagner
Source:
Molecular ecology 2019 v.28 no.16 pp. 3738-3755
ISSN:
0962-1083
Subject:
Bayesian theory; Oncorhynchus clarkii bouvieri; Oncorhynchus mykiss; ancestry; environmental factors; genomics; hybridization; hybrids; indigenous species; phenotype; random mating; reproductive isolation; spawning; trout; watersheds; Wyoming
Abstract:
... Hybridization can profoundly affect the genomic composition and phenotypes of closely related species, and provides an opportunity to identify mechanisms that maintain reproductive isolation between species. Recent evidence suggests that hybridization outcomes within a species pair can vary across locations. However, we still do not know how variable outcomes of hybridization are across geographic ...
DOI:
10.1111/mec.15175
PubMed:
31294488
PubMed Central:
PMC6775767