Predator life history and prey ontogeny limit natural selection on the major armour gene, Eda , in threespine stickleback

2021 ◽  
Author(s):  
Ben A. Wasserman ◽  
Kerry Reid ◽  
Olivia M. Arredondo ◽  
Ann‐Marie K. Osterback ◽  
Cynthia H. Kern ◽  
...  
Keyword(s):  
Life History ◽  
Natural Selection ◽  
Threespine Stickleback

Latitudinal divergence of common frog ( Rana temporaria ) life history traits by natural selection: evidence from a comparison of molecular and quantitative genetic data

2003 ◽  
Vol 12 (7) ◽  
pp. 1963-1978 ◽  
Author(s):  
J. U. Palo ◽  
R. B. O'Hara ◽  
A. T. Laugen ◽  
A. Laurila ◽  
C. R. Primmer ◽  
...  
Keyword(s):  
Life History ◽  
Natural Selection ◽  
Life History Traits ◽  
Rana Temporaria ◽  
Genetic Data ◽  
Common Frog ◽  
Quantitative Genetic ◽  
Frog Rana Temporaria

scholarly journals Genome size correlates with reproductive fitness in seed beetles

2015 ◽  
Vol 282 (1815) ◽  
pp. 20151421 ◽  
Author(s):  
Göran Arnqvist ◽  
Ahmed Sayadi ◽  
Elina Immonen ◽  
Cosima Hotzy ◽  
Daniel Rankin ◽  
...  
Keyword(s):  
Life History ◽  
Natural Selection ◽  
Genome Size ◽  
Evolutionary Biology ◽  
Large Scale ◽  
Life History Traits ◽  
Single Species ◽  
Reproductive Fitness ◽  
Correlated Evolution ◽  
Seed Beetles

The ultimate cause of genome size (GS) evolution in eukaryotes remains a major and unresolved puzzle in evolutionary biology. Large-scale comparative studies have failed to find consistent correlations between GS and organismal properties, resulting in the ‘ C -value paradox’. Current hypotheses for the evolution of GS are based either on the balance between mutational events and drift or on natural selection acting upon standing genetic variation in GS. It is, however, currently very difficult to evaluate the role of selection because within-species studies that relate variation in life-history traits to variation in GS are very rare. Here, we report phylogenetic comparative analyses of GS evolution in seed beetles at two distinct taxonomic scales, which combines replicated estimation of GS with experimental assays of life-history traits and reproductive fitness. GS showed rapid and bidirectional evolution across species, but did not show correlated evolution with any of several indices of the relative importance of genetic drift. Within a single species, GS varied by 4–5% across populations and showed positive correlated evolution with independent estimates of male and female reproductive fitness. Collectively, the phylogenetic pattern of GS diversification across and within species in conjunction with the pattern of correlated evolution between GS and fitness provide novel support for the tenet that natural selection plays a key role in shaping GS evolution.

scholarly journals Using seasonal genomic changes to understand historical adaptation: parallel selection on stickleback in highly-variable estuaries

2020 ◽  
Author(s):  
Alan Garcia-Elfring ◽  
Antoine Paccard ◽  
Timothy J. Thurman ◽  
Ben A. Wasserman ◽  
Eric P. Palkovacs ◽  
...  
Keyword(s):  
Natural Selection ◽  
Allele Frequency ◽  
Calcium Binding ◽  
Gasterosteus Aculeatus ◽  
Environmental Changes ◽  
Threespine Stickleback ◽  
Functional Enrichment ◽  
Genomic Changes ◽  
Parallel Selection ◽  
Frequency Changes

AbstractParallel evolution is considered strong evidence for natural selection. However, few studies have investigated the process of parallel selection as it plays out in real time. The common approach is to study historical signatures of selection in populations already well adapted to different environments. Here, to document selection in action under natural conditions, we study six populations of threespine stickleback (Gasterosteus aculeatus) inhabiting bar-built estuaries that undergo seasonal cycles of environmental changes. Estuaries are periodically isolated from the ocean due to sandbar formation during dry summer months, with concurrent environmental shifts that resemble the long-term changes associated with postglacial colonization of freshwater habitats by marine populations. We used pooled whole-genome sequencing (Pool-WGS) to track seasonal allele frequency changes in these populations and search for signatures of natural selection. We found consistent changes in allele frequency across estuaries, suggesting a potential role for parallel selection. Functional enrichment among candidate genes included transmembrane ion transport and calcium binding, which are important for osmoregulation and ion balance. The genomic changes that occur in threespine stickleback from bar-built estuaries could provide a glimpse into the early stages of adaptation that have occurred in many historical marine to freshwater transitions.

Moving Targets

2012 ◽  
Author(s):  
Stephen J. Simpson ◽  
David Raubenheimer
Keyword(s):  
Life History ◽  
Natural Selection ◽  
Growth And Development ◽  
Early Growth ◽  
Evolutionary Change ◽  
Life History Strategies ◽  
Moving Targets ◽  
Gene Frequencies ◽  
Epigenetic Effects ◽  
As Species

This chapter studies intake and growth targets. For clarity, earlier chapters have treated intake and growth targets as static points integrated across a particular period in the life of an animal. In reality they are, of course, not static but rather trajectories that move in time. In the short term, the requirements of the animal change as environmental circumstances impose differing demands for nutrients and energy. At a somewhat longer timescale, targets move as the animal passes through the various stages of its life, from early growth and development to maturity, reproduction, and senescence. On an even longer timescale, nutritional traits are subject to natural selection and move as species evolve to exploit new or changing nutritional environments and to adopt differing life-history strategies. Presaging such evolutionary change in gene frequencies within populations are epigenetic effects, whereby the nutritional experiences of parents influence the behavior and metabolism of their offspring without requiring changes in gene frequencies.

scholarly journals Life-history plasticity in female threespine stickleback

Heredity ◽  
2015 ◽  
Vol 115 (4) ◽  
pp. 322-334 ◽  
Author(s):  
J A Baker ◽  
M A Wund ◽  
D C Heins ◽  
R W King ◽  
M L Reyes ◽  
...  
Keyword(s):  
Life History ◽  
Threespine Stickleback

scholarly journals Physiological Epistasis, Ontogenetic Conflict and Natural Selection on Physiology and Life History

2003 ◽  
Vol 43 (3) ◽  
pp. 419-430 ◽  
Author(s):  
B. Sinervo
Keyword(s):  
Life History ◽  
Natural Selection

Evolution of senescence: late survival sacrificed for reproduction

1991 ◽  
Vol 332 (1262) ◽  
pp. 15-24 ◽  
Keyword(s):  
Population Genetics ◽  
Life History ◽  
Natural Selection ◽  
Antagonistic Pleiotropy ◽  
Widespread Occurrence ◽  
Disposable Soma Theory ◽  
Somatic Tissues ◽  
Competing Demands ◽  
Early Effects ◽  
Late Survival

In so far as it is associated with declining fertility and increasing mortality, senescence is directly detrimental to reproductive success. Natural selection should therefore act in the direction of postponing or eliminating senescence from the life history. The widespread occurrence of senescence is explained by observing that (i) the force of natural selection is generally weaker at late ages than at early ages, and (ii) the acquisition of greater longevity usually involves some cost. Two convergent theories are the ‘antagonistic pleiotropy’ theory, based in population genetics, and the ‘disposable soma’ theory, based in physiological ecology. The antagonistic pleiotropy theory proposes that certain alleles that are favoured because of beneficial early effects also have deleterious later effects. The disposable soma theory suggests that because of the competing demands of reproduction less effort is invested in the maintenance of somatic tissues than is necessary for indefinite survival.

scholarly journals Response of life-history traits to artificial and natural selection for virulence and nonvirulence in aDrosophilaparastitoid,Asobara tabida

2017 ◽  
Vol 25 (2) ◽  
pp. 317-327 ◽  
Author(s):  
Joffrey Moiroux ◽  
Joan van Baaren ◽  
Mathilde Poyet ◽  
Aude Couty ◽  
Patrice Eslin ◽  
...  
Keyword(s):  
Life History ◽  
Natural Selection ◽  
Life History Traits ◽  
Asobara Tabida ◽  
Selection For

Power and Evolutionary Fitness of Teleosts

1982 ◽  
Vol 39 (1) ◽  
pp. 3-13 ◽  
Author(s):  
D. M. Ware
Keyword(s):  
Life History ◽  
Natural Selection ◽  
Optimal Foraging ◽  
Evolutionary Biology ◽  
Life History Theory ◽  
A Priori ◽  
Empirical Work ◽  
Physiological Basis ◽  
Vital Functions ◽  
Surplus Power

The use of optimization arguments in evolutionary biology has been criticized because the methodology requires an assumption about what is being maximized by natural selection. As optimality arguments are often a priori and always speculative, the critics point out that there is no theoretical basis for any maximization principles in biology. They contend that only empirical work can establish if there are some properties of species that are generally maximized by natural selection. I accept this standard for evaluation, and argue that the concept of surplus power, which provides a physiological basis for optimal foraging and life history theory, is related to fitness. Evidence in the form of specific morphological and behavioral traits in teleost fishes is presented to demonstrate that natural selection has increased surplus power. Life history theory is concerned with how power is allocated by organisms to various vital functions; therefore, the specific problem of stock and recruitment in fisheries can be treated as a special application of life history theory. Some implications about the dynamics and possible survival value of different reproductive strategies exhibited by teleosts are discussed.Key words: surplus power, evolutionary biology, optimal foraging, life history theory, fitness

scholarly journals Rapid shifts in multiple life history traits in a population of threespine stickleback

2011 ◽  
Vol 24 (4) ◽  
pp. 863-870 ◽  
Author(s):  
J. A. BAKER ◽  
D. C. HEINS ◽  
R. W. KING ◽  
S. A. FOSTER
Keyword(s):  
Life History ◽  
Life History Traits ◽  
Threespine Stickleback
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