scholarly journals Genetic Basis of Variation in Morphological and Life-History Traits of a Wild Population of Pink Salmon

2004 ◽  
Vol 96 (1) ◽  
pp. 24-31 ◽  
Author(s):  
W. C. Funk ◽  
J. A. Tyburczy ◽  
K. L. Knudsen ◽  
K. R. Lindner ◽  
F. W. Allendorf
Keyword(s):  
Life History ◽  
Life History Traits ◽  
Genetic Basis ◽  
Wild Population ◽  
Pink Salmon

Calcium effects on life-history traits in a wild population of the great tit (Parus major): analysis of long-term data at several spatial scales

Oecologia ◽  
2008 ◽  
Vol 159 (2) ◽  
pp. 463-472 ◽  
Author(s):  
Teddy Albert Wilkin ◽  
Andrew G. Gosler ◽  
Dany Garant ◽  
S. James Reynolds ◽  
Ben C. Sheldon
Keyword(s):  
Life History ◽  
Life History Traits ◽  
Wild Population ◽  
Spatial Scales ◽  
Parus Major ◽  
Great Tit ◽  
Calcium Effects ◽  
Term Data

scholarly journals The genetic control of leaf and petal allometric variations in Arabidopsis thaliana

2020 ◽  
Author(s):  
Xin Li ◽  
Yaohua Zhang ◽  
Suxin Yang ◽  
Chunxia Wu ◽  
Qun Shao ◽  
...  
Keyword(s):  
Cell Proliferation ◽  
Arabidopsis Thaliana ◽  
Life History ◽  
Life History Traits ◽  
Genetic Basis ◽  
Principal Component ◽  
Confidence Regions ◽  
Stem Length ◽  
Organ Shape ◽  
Shape And Size

Abstract Background Correlated variation in shape and size (allometry) is a major component of natural diversity. Although ample research has been conducted on organ shape and size, little of it has considered the correlated variation of these two traits and quantitatively measured the variation in a common framework. The genetic basis of allometry variation in a single organ or among different organs is also relatively unknown. Results We examined the genetic basis for leaf and petal allometry within multiparent advanced generation intercross (MAGIC) populations of Arabidopsis thaliana. A principal component analysis of organ landmarks and outlines was conducted and used to quantitatively capture shape and size variation in leaves and petals. The genetic basis of leaf and petal allometry and the allometric covariation between leaves and petals was analyzed via QTL mapping. Five QTLs for the fourth leaf, 11 QTLs for the seventh leaf, and 12 QTLs for the petal size and shape were identified. Besides that, 12 QTLs were identified in association with the fourth leaf and petal allometry covariation, and eight QTLs were identified to associate with the seventh leaf and petal allometry covariation. In these confidence regions, many important candidate genes associated with cell proliferation, expansion, and differentiation contained alleles with maximum effects. Life-history traits, such as days to bolt, stem length, and rosette leaf number, were also measured and used to perform the QTL analysis within the MAGIC lines. The phenotype correlation and QTL overlap between leaf and petal allometry with life-history traits hinted at the genetic integration of organ allometry with the life-history traits and of the interaction of organ allometry with local adaptation. Conclusions Allometry describes the correlated variation in shape and size in one organ or related organs. Several QTLs were identified by using the MAGIC lines and the genes associated with cell proliferation and expansion may responsible for the leaf and petal allometry. Summarily, we explored the genetic basis of allometry variation of leaf and petal by using the MAGIC lines, and may provide important information for investigating the organ shape and size evolution in Arabidopsis.

scholarly journals Dispersal as a source of variation in age-specific reproductive strategies in a wild population of lizards

2015 ◽  
Vol 282 (1820) ◽  
pp. 20151741 ◽  
Author(s):  
Olivier Cotto ◽  
Manuel Massot ◽  
Ophélie Ronce ◽  
Jean Clobert
Keyword(s):  
Life History ◽  
Body Condition ◽  
Life History Traits ◽  
Reproductive Effort ◽  
Wild Population ◽  
Recent Theory ◽  
Offspring Sex Ratio ◽  
Dispersal Syndromes ◽  
Common Lizard ◽  
High Investment

Dispersal syndromes describe the patterns of covariation of morphological, behavioural, and life-history traits associated with dispersal. Studying dispersal syndromes is critical to understanding the demographic and genetic consequences of movements. Among studies describing the association of life-history traits with dispersal, there is anecdotal evidence suggesting that dispersal syndromes can vary with age. Recent theory also suggests that dispersive and philopatric individuals might have different age-specific reproductive efforts. In a wild population of the common lizard ( Zootoca vivipara ), we investigated whether dispersive and philopatric individuals have different age-specific reproductive effort, survival, offspring body condition, and offspring sex ratio. Consistent with theoretical predictions, we found that young dispersive females have a higher reproductive effort than young philopatric females. Our results also suggest that the early high investment in reproduction of dispersive females trades-off with an earlier onset of senescence than in philopatric females. We further found that young dispersive females produce smaller offspring in lower body condition than do young philopatric females. Overall, our results provide empirical evidence that dispersive and philopatric individuals have different age-specific life-history traits.

scholarly journals The extent and genetic basis of phenotypic divergence in life history traits inMimulus guttatus

2014 ◽  
Vol 24 (1) ◽  
pp. 111-122 ◽  
Author(s):  
Jannice Friedman ◽  
Alex D. Twyford ◽  
John H. Willis ◽  
Benjamin K. Blackman
Keyword(s):  
Life History ◽  
Life History Traits ◽  
Genetic Basis ◽  
Phenotypic Divergence
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