Abstract:
BACKGROUND:Early evolutionary theories of aging predict that populations which experience low extrinsic mortality evolve a retarded onset of senescence. Experimental support for this theory in vertebrates is scarce, in part for the difficulty of quantifying extrinsic mortality and its condition- and density-dependent components that -when considered- can lead to predictions markedly different to those of the "classical" theories. Here, we study annual fish of the genus Nothobranchius whose maximum lifespan is dictated by the duration of the water bodies they inhabit. Different populations of annual fish do not experience different strengths of extrinsic mortality throughout their life span, but are subject to differential timing (and predictability) of a sudden habitat cessation. In this respect, our study allows testing how aging evolves in natural environments when populations vary in the prospect of survival, but condition-dependent survival has a limited effect. We use 10 Nothobranchius populations from seasonal pools that differ in their duration to test how this parameter affects longevity and aging in two independent clades of these annual fishes. RESULTS:We found that replicated populations from a dry region showed markedly shorter captive lifespan than populations from a humid region. Shorter lifespan correlated with accelerated accumulation of lipofuscin (an established age marker) in both clades. Analysis of wild individuals confirmed that fish from drier habitats accumulate lipofuscin faster also under natural conditions. This indicates faster physiological deterioration in shorter-lived populations. CONCLUSIONS:Our data provide a strong quantitative example of how extrinsic mortality can shape evolution of senescence in a vertebrate clade. Nothobranchius is emerging as a genomic model species. The characterization of pairs of closely related species with different longevities should provide a powerful paradigm for the identification of genetic variations responsible for evolution of senescence in natural populations.
journal_name
BMC Evol Bioljournal_title
BMC evolutionary biologyauthors
Tozzini ET,Dorn A,Ng'oma E,Polačik M,Blažek R,Reichwald K,Petzold A,Watters B,Reichard M,Cellerino Adoi
10.1186/1471-2148-13-77subject
Has Abstractpub_date
2013-04-03 00:00:00pages
77issn
1471-2148pii
1471-2148-13-77journal_volume
13pub_type
杂志文章abstract:BACKGROUND:A genome-wide comparative analysis of human and mouse gene expression patterns was performed in order to evaluate the evolutionary divergence of mammalian gene expression. Tissue-specific expression profiles were analyzed for 9,105 human-mouse orthologous gene pairs across 28 tissues. Expression profiles wer...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/1471-2148-6-70
更新日期:2006-09-12 00:00:00
abstract:BACKGROUND:Interspecific hybridization may lead to the introgression of genes and genomes across species barriers and contribute to a reticulate evolutionary pattern and thus taxonomic uncertainties. Since several previous studies have demonstrated that introgressive hybridization has occurred among some species within...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/1471-2148-11-223
更新日期:2011-07-28 00:00:00
abstract:BACKGROUND:Many species of social insects have large-scale mating and dispersal flights and their populations are therefore often relatively homogenous. In contrast, dispersal on the wing appears to be uncommon in most species of the ant genus Cardiocondyla, because its males are wingless and the winged queens mate in ...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/s12862-019-1448-6
更新日期:2019-06-06 00:00:00
abstract:BACKGROUND:Orb-web weaving spiders and their relatives use multiple types of task-specific silks. The majority of spider silk studies have focused on the ultra-tough dragline silk synthesized in major ampullate glands, but other silk types have impressive material properties. For instance, minor ampullate silks of orb-...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/s12862-017-0927-x
更新日期:2017-03-14 00:00:00
abstract:BACKGROUND:Moths have evolved highly successful mating systems, relying on species-specific mixtures of sex pheromone components for long-distance mate communication. Acyl-CoA desaturases are key enzymes in the biosynthesis of these compounds and to a large extent they account for the great diversity of pheromone struc...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/1471-2148-8-270
更新日期:2008-10-02 00:00:00
abstract:BACKGROUND:Polyplacophora, or chitons, have long fascinated malacologists for their distinct and rather conserved morphology and lifestyle compared to other mollusk classes. However, key aspects of their phylogeny and evolution remain unclear due to the few morphological, molecular, or combined phylogenetic analyses, p...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/s12862-019-1573-2
更新日期:2020-02-05 00:00:00
abstract:BACKGROUND:Recent studies have revealed an unexpected diversity of domain architecture among FcR-like receptors that presumably fulfill regulatory functions in the immune system. Different species of mammals, as well as chicken and catfish have been found to possess strikingly different sets of these receptors. To bett...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/1471-2148-8-148
更新日期:2008-05-16 00:00:00
abstract:BACKGROUND:Divergent selection can be a major driver of ecological speciation. In insects of medical importance, understanding the speciation process is both of academic interest and public health importance. In the West Nile virus vector Culex pipiens, intraspecific pipiens and molestus forms vary in ecological and ph...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/s12862-015-0477-z
更新日期:2015-09-16 00:00:00
abstract:BACKGROUND:While numerous studies revealed the major role of environmental changes of the Quaternary on the evolution of biodiversity, research on the influence of that period on current South-American fauna is scarce and have usually focused on lowland regions. In this study, the genetic structure of the pampas cat (L...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/1471-2148-9-68
更新日期:2009-03-30 00:00:00
abstract:BACKGROUND:Genetic analyses of DNA sequences make use of an increasingly complex set of nucleotide substitution models to estimate the divergence between gene sequences. However, there is currently no way to assess the validity of nucleotide substitution models over short time-scales and with limited mutational accumul...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/s12862-015-0312-6
更新日期:2015-03-11 00:00:00
abstract:BACKGROUND:Horizontal gene transfer plays an important role in evolution because it sometimes allows recipient lineages to adapt to new ecological niches. High genes transfer frequencies were inferred for prokaryotic and early eukaryotic evolution. Does horizontal gene transfer also impact phylogenetic reconstruction o...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/1471-2148-7-45
更新日期:2007-03-21 00:00:00
abstract:BACKGROUND:Colour and shape polymorphisms are important features of many species and may allow individuals to exploit a wider array of habitats, including through behavioural differences among morphs. In addition, differences among individuals in behaviour and morphology may reflect different strategies, for example ut...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/s12862-016-0796-8
更新日期:2016-10-18 00:00:00
abstract:BACKGROUND:Divergence within cis-regulatory sequences may contribute to the adaptive evolution of gene expression, but functional alleles in these regions are difficult to identify without abundant genomic resources. Among African cichlid fishes, the differential expression of seven opsin genes has produced adaptive di...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/1471-2148-11-120
更新日期:2011-05-09 00:00:00
abstract:BACKGROUND:Clear examples of ecological speciation exist, often involving divergence in trophic morphology. However, substantial variation also exists in how far the ecological speciation process proceeds, potentially linked to the number of ecological axes, traits, or genes subject to divergent selection. In addition,...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/1471-2148-13-135
更新日期:2013-07-03 00:00:00
abstract:BACKGROUND:Remipedia, a group of homonomously segmented, cave-dwelling, eyeless arthropods have been regarded as basal crustaceans in most early morphological and taxonomic studies. However, molecular sequence information together with the discovery of a highly differentiated brain led to a reconsideration of their phy...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/1471-2148-12-168
更新日期:2012-09-05 00:00:00
abstract:BACKGROUND:Disparity in the timing of biological events occurs across a variety of systems, yet the understanding of genetic basis underlying diverse phenologies remains limited. Variation in maturation timing occurs in steelhead trout, which has been associated with greb1L, an oestrogen target gene. Previous technique...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/s12862-018-1255-5
更新日期:2018-09-15 00:00:00
abstract:BACKGROUND:Fiddler crabs, genus Uca, are classic examples of how intense sexual selection can produce exaggerated male traits. Throughout the genus the enlarged "major" cheliped (claw) of the male fiddler crab is used both as a signal for attracting females and as a weapon for combat with other males. However, the morp...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/1471-2148-13-137
更新日期:2013-07-15 00:00:00
abstract:BACKGROUND:Population genetics theory predicts an important role of differences in the effective population size (N e ) among species on shaping the accumulation of functional mutations by regulating the selection efficiency. However, this correlation has never been tested in domesticated animals. RESULTS:Here, we syn...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/s12862-018-1120-6
更新日期:2018-01-19 00:00:00
abstract:BACKGROUND:Publication of the first diatom genome, that of Thalassiosira pseudonana, established it as a model species for experimental and genomic studies of diatoms. Virtually every ensuing study has treated T. pseudonana as a marine diatom, with genomic and experimental data valued for their insights into the ecolog...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/1471-2148-11-125
更新日期:2011-05-14 00:00:00
abstract:BACKGROUND:Anthropogenic factors can have a major impact on the contemporary distribution of intraspecific genetic diversity. Many freshwater fishes have finely structured and locally adapted populations, but their natural genetic structure can be affected by river engineering schemes across river basins, fish transfer...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/s12862-018-1219-9
更新日期:2018-07-04 00:00:00
abstract:BACKGROUND:The rate of nucleotide substitutions is not constant across the Tree of Life, and departures from a molecular clock have been commonly reported. Within parmelioid lichens, the largest group of macrolichens, large discrepancies in branch lengths between clades were found in previous studies. Using an extended...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/1471-2148-8-257
更新日期:2008-09-22 00:00:00
abstract:BACKGROUND:Many animals live in groups. One proposed reason is that grouping allows cooperative food finding. Group foraging models suggest that grouping could increase food finding rates, but that such group processes could be evolutionarily unstable. These models assume discrete food patches which are fully detectabl...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/1471-2148-11-335
更新日期:2011-11-17 00:00:00
abstract:BACKGROUND:There are around 400 internationally recognized dog breeds in the world today, with a remarkable diversity in size, shape, color and behavior. Breeds are considered to be uniform groups with similar physical characteristics, shaped by selection rooted in human preferences. This has led to a large genetic dif...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/1471-2148-8-28
更新日期:2008-01-28 00:00:00
abstract:BACKGROUND:Maternally inherited endosymbionts like Wolbachia pipientis are in linkage disequilibrium with the mtDNA of their hosts. Therefore, they can induce selective sweeps, decreasing genetic diversity over many generations. This sex ratio distorter, that is involved in the origin of parthenogenesis and other repro...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/1471-2148-10-340
更新日期:2010-11-04 00:00:00
abstract:BACKGROUND:Through its ability to open pores in cell membranes, perforin-1 plays a key role in the immune system. Consistent with this role, the gene encoding perforin shows hallmarks of complex evolutionary events, including amplification and pseudogenization, in multiple species. A large proportion of these events oc...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/s12862-020-01698-1
更新日期:2020-10-19 00:00:00
abstract:BACKGROUND:The secretin family is a pleotropic group of brain-gut peptides with affinity for class 2 G-protein coupled receptors (secretin family GPCRs) proposed to have emerged early in the metazoan radiation via gene or genome duplications. In human, 10 members exist and sequence and functional homologues and ligand-...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/1471-2148-10-135
更新日期:2010-05-06 00:00:00
abstract:BACKGROUND:Disentangling the drivers of genetic differentiation is one of the cornerstones in evolution. This is because genetic diversity, and the way in which it is partitioned within and among populations across space, is an important asset for the ability of populations to adapt and persist in changing environments...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/s12862-020-01635-2
更新日期:2020-06-22 00:00:00
abstract:BACKGROUND:The relationship between allopolyploidy and plant virus resistance is poorly understood. To determine the relationship of plant evolutionary history and basal virus resistance, a panel of Nicotiana species from diverse geographic regions and ploidy levels was assessed for resistance to non-coevolved viruses ...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/1471-2148-14-149
更新日期:2014-07-03 00:00:00
abstract:BACKGROUND:Dispersal is often associated with a suite of phenotypic traits that might reduce dispersal costs, but can be energetically costly themselves outside dispersal. Hence, dispersing and philopatric individuals might differ throughout their life cycle in their management of energy production. Because higher ener...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/s12862-016-0697-x
更新日期:2016-06-14 00:00:00
abstract:BACKGROUND:Species complexes or aggregates consist of a set of closely related species often of different ploidy levels, whose relationships are difficult to reconstruct. The N Hemisphere Achillea millefolium aggregate exhibits complex morphological and genetic variation and a broad ecological amplitude. To understand ...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/1471-2148-12-2
更新日期:2012-01-03 00:00:00