Abstract：
:We studied the correlations between offspring sex ratio, UV coloration and overwinter survival in a population of blue tits, breeding in Gotland, Sweden, over three consecutive breeding seasons. In 2 of 3 years, we found that females paired to males with relatively brighter UV-coloration produced a greater proportion of sons in their broods, and that this effect was significant with all 3 years combined, despite a significant year by male UV interaction. In addition, we found other correlates of sex ratio (breeding time, female age and clutch size) in some, but not all years, and some of these showed significantly different relationships with sex ratio between years. In both years for which data were available, there were indications that males with relatively brighter UV coloration, and that paired with females that produced male-biased clutches, were more likely to survive to the next year. In addition, we also found that in both males and females, individuals produced similar sex ratios in consecutive years. Because correlations with the sex ratio may be expected to be weak, variation in results between years within the same population may be explained by low statistical power or genuine biological differences. Our results suggest that conclusions about sex ratio variation in birds should be based on multiple years. The correlations that we found in some years of this study are consistent with models of adaptive sex ratio adjustment in response to mate quality. However, careful experimental work is required to provide tests of the assumptions of these models, and should be a priority for future work.
journal_name
J Evol Bioljournal_title
Journal of evolutionary biologyauthors
Griffith SC,Ornborg J,Russell AF,Andersson S,Sheldon BCdoi
10.1046/j.1420-9101.2003.00550.xkeywords:
subject
Has Abstractpub_date
2003-09-01 00:00:00pages
1045-54issue
5eissn
1010-061Xissn
1420-9101journal_volume
16pub_type
杂志文章abstract：:The satyr of Greek mythology was half-man, half-goat, with an animal persona signifying immoderate sexual appetites. In biology, satyrization is the disruption of reproduction in matings between closely-related species. Interestingly, its effects are often reciprocally asymmetric, manifesting more strongly in one dire...
journal_title：Journal of evolutionary biology
pub_type： 杂志文章
doi：10.1111/jeb.13733
更新日期：2020-11-06 00:00:00
abstract：:Why are sinistral snails so rare? Two main hypotheses are that selection acts against the establishment of new coiling morphs, because dextral and sinistral snails have trouble mating, or else a developmental constraint prevents the establishment of sinistrals. We therefore used an isolate of the snail Lymnaea stagnal...
journal_title：Journal of evolutionary biology
pub_type： 杂志文章
doi：10.1111/j.1420-9101.2009.01770.x
更新日期：2009-08-01 00:00:00
abstract：:Warning coloration is a widespread strategy to alert predators about prey unprofitability. The success of this strategy partly depends on predators being able to learn and recognize certain signals as indicators of toxicity, and theory predicts that this is easier if signals converge on similar colours. However, the d...
journal_title：Journal of evolutionary biology
pub_type： 杂志文章
doi：10.1111/jeb.13074
更新日期：2017-07-01 00:00:00
abstract：:Our ability to examine genetic variation across entire genomes has enabled many studies searching for the genetic basis of local adaptation. These studies have identified numerous loci as candidates for differential local selection; however, relatively few have examined the overlap among candidate loci identified from...
journal_title：Journal of evolutionary biology
pub_type： 杂志文章
doi：10.1111/jeb.13732
更新日期：2020-11-04 00:00:00
abstract：:One of the main goals of molecular evolutionary biology is to determine the factors that influence the evolutionary rate of selectively neutral DNA, but much remains unknown, especially for plants. Key factors that could alter the mutation rate include environmental tolerances (because they reflect a plants vulnerabil...
journal_title：Journal of evolutionary biology
pub_type： 杂志文章
doi：10.1111/j.1420-9101.2005.00977.x
更新日期：2006-01-01 00:00:00
abstract：:Evolutionary theories of ageing predict that life span increases with decreasing extrinsic mortality, and life span variation among queens in ant species seems to corroborate this prediction: queens, which are the only reproductive in a colony, live much longer than queens in multi-queen colonies. The latter often inh...
journal_title：Journal of evolutionary biology
pub_type： 杂志文章
doi：10.1111/j.1420-9101.2011.02278.x
更新日期：2011-07-01 00:00:00
abstract：:Through simulation, Whitlock showed that when all the alternatives have the same effect size, the weighted z-test is superior to both unweighted z-test and Fisher's method when combining P-values from independent studies. In this paper, we show that under the same situation, the generalized Fisher method due to Lancas...
journal_title：Journal of evolutionary biology
pub_type： 杂志文章
doi：10.1111/j.1420-9101.2010.02226.x
更新日期：2011-04-01 00:00:00
abstract：:The costs of bird song incurred in a diversity of ways may result in trade-offs in the production and maintenance of elaborate plumage ornaments. In this paper, we examine evolutionary trade-offs between acoustic and visual signalling in trogon birds (Trogonidae). Using multiple regressions with phylogenetically indep...
journal_title：Journal of evolutionary biology
pub_type： 杂志文章
doi：10.1111/j.1420-9101.2008.01679.x
更新日期：2009-03-01 00:00:00
abstract：:Recently, two squirrel species (Spermophilus spp.) were discovered to anoint their bodies with rattlesnake scent as a means of concealing their odour from these chemosensory predators. In this study, we tested multiple species with predator scents (rattlesnake and weasel) to determine the prevalence of scent applicati...
journal_title：Journal of evolutionary biology
pub_type： 杂志文章
doi：10.1111/j.1420-9101.2010.02083.x
更新日期：2010-10-01 00:00:00
abstract：:Many hypotheses explaining the evolution and maintenance of sexual cannibalism incorporate the nutritional aspect of the consumption of males. Most studies have focused on a fecundity advantage through consumption of a male; however, recent studies have raised the intriguing possibility that consumption of a male may ...
journal_title：Journal of evolutionary biology
pub_type： 杂志文章
doi：10.1111/jeb.13178
更新日期：2017-12-01 00:00:00
abstract：:We investigated the effect of temperature and wing morphology on the quantitative genetic variances and covariances of five size-related traits in the sand cricket, Gryllus firmus. Micropterous and macropterous crickets were reared in the laboratory at 24, 28 and 32 degrees C. Quantitative genetic parameters were esti...
journal_title：Journal of evolutionary biology
pub_type： 杂志文章
doi：10.1111/j.1420-9101.2004.00772.x
更新日期：2004-11-01 00:00:00
abstract：:Evolutionary theory predicts that herbivorous insects should lay eggs on plants in a way that reflects the suitability of each plant species for larval development. Empirical studies, however, often fail to find any relationship between an adult insect's choice of host-plant and offspring fitness, and in such cases, i...
journal_title：Journal of evolutionary biology
pub_type： 杂志文章,评审
doi：10.1111/j.1420-9101.2011.02435.x
更新日期：2012-02-01 00:00:00
abstract：:Typically males bear the products of sexual selection in the form of ornaments and/or weapons used to compete for and attract females. Secondary sexual traits in females have been thought of as the product of correlated responses to sexual selection on males. However, there is increasing phylogenetic evidence that fem...
journal_title：Journal of evolutionary biology
pub_type： 杂志文章
doi：10.1111/j.1420-9101.2008.01575.x
更新日期：2008-09-01 00:00:00
abstract：:The reproductive mechanism, that is whether an organism outcrosses, selfs or asexually reproduces, has a substantial impact on the amount and pattern of genetic variation. In this study, we estimate genetic variation and genetic load for a predominately asexual population of Mimulus guttatus, and then compare our resu...
journal_title：Journal of evolutionary biology
pub_type： 杂志文章
doi：10.1111/j.1420-9101.2009.01848.x
更新日期：2009-11-01 00:00:00
abstract：:Identifying the genetic basis of parallel phenotypic evolution provides insight into the process of adaptation and evolutionary constraint. White clover (Trifolium repens) has evolved climate-associated adaptive clines in cyanogenesis (the ability to produce hydrogen cyanide upon tissue damage) in several world region...
journal_title：Journal of evolutionary biology
pub_type： 杂志文章
doi：10.1111/jeb.12466
更新日期：2014-11-01 00:00:00
abstract：:Mutations that are beneficial in one environment can have different fitness effects in other environments. In the context of antibiotic resistance, the resulting genotype-by-environment interactions potentially make selection on resistance unpredictable in heterogeneous environments. Furthermore, resistant bacteria fr...
journal_title：Journal of evolutionary biology
pub_type： 杂志文章
doi：10.1111/jeb.12172
更新日期：2013-08-01 00:00:00
abstract：:Brain size varies greatly at all taxonomic levels. Feeding ecology, life history and sexual selection have been proposed as key components in generating contemporary diversity in brain size across vertebrates. Analyses of brain size evolution have, however, been limited to lineages where males predominantly compete fo...
journal_title：Journal of evolutionary biology
pub_type： 杂志文章
doi：10.1111/jeb.12995
更新日期：2017-01-01 00:00:00
abstract：:The impact of ecological factors on natural hybridization is of widespread interest. Here, we asked whether climate niche influences hybridization between the two closely related plant species Myriophyllum sibiricum and M. spicatum. Eight microsatellite loci and two chloroplast fragments were used to investigate the o...
journal_title：Journal of evolutionary biology
pub_type： 杂志文章
doi：10.1111/jeb.12667
更新日期：2015-08-01 00:00:00
abstract：:Understanding factors involved in maintaining stable hybrid zones is important for predicting the ultimate fate of the interacting taxa, but the relative importance of mechanisms such as ecological selection and intrinsic reproductive isolation remains unclear. Most studies of reproductive isolation in hybrid zones ha...
journal_title：Journal of evolutionary biology
pub_type： 杂志文章
doi：10.1111/jeb.13055
更新日期：2017-04-01 00:00:00
abstract：:The temperature-size rule is a common pattern of phenotypic plasticity in which higher temperature during development results in a smaller adult body size (i.e. a thermal reaction norm with negative slope). Examples and exceptions to the rule are known in multiple groups of organisms, but rapid population differentiat...
journal_title：Journal of evolutionary biology
pub_type： 杂志文章
doi：10.1111/j.1420-9101.2007.01318.x
更新日期：2007-05-01 00:00:00
abstract：:The effects of competition on the genetic composition of natural populations are not well understood. We combined demography and molecular genetics to study how intraspecific competition affects microevolution in cohorts of volunteer plants of cassava (Manihot esculenta) originating from seeds in slash-and-burn fields...
journal_title：Journal of evolutionary biology
pub_type： 杂志文章
doi：10.1111/j.1420-9101.2005.00990.x
更新日期：2006-01-01 00:00:00
abstract：:The evolutionary significance of widespread hypo-allometric scaling of genital traits in combination with rapid interspecific genital trait divergence has been of key interest to evolutionary biologists for many years and remains poorly understood. Here, we provide a detailed assessment of quantitative genital trait v...
journal_title：Journal of evolutionary biology
pub_type： 杂志文章
doi：10.1111/jeb.12848
更新日期：2016-06-01 00:00:00
abstract：:Sexual signalling is predicted to shape the evolution of sex-specific ornamentation, and establishing the costs and benefits of ornamentation and the information that ornamentation provides to receivers is necessary to evaluating this adaptive function. Here, we assessed the adaptive function of a common colour orname...
journal_title：Journal of evolutionary biology
pub_type： 杂志文章
doi：10.1111/jeb.12953
更新日期：2016-11-01 00:00:00
abstract：:Three different isolated populations of the slave-making ant Rossomyrmex minuchae, sympatric with its obligate host Proformica longiseta, are known from the high mountains of southern Spain. To test the prediction that the slave-maker and its host represent a coevolutionary geographical mosaic, we studied the variatio...
journal_title：Journal of evolutionary biology
pub_type： 杂志文章
doi：10.1111/j.1420-9101.2011.02238.x
更新日期：2011-05-01 00:00:00
abstract：:Although high levels of self-fertilization (>85%) are not uncommon in nature, organisms reproducing entirely through selfing are extremely rare. Predominant selfers are expected to have low genetic diversity because genetic variation is distributed among rather than within lineages and is readily lost through genetic ...
journal_title：Journal of evolutionary biology
pub_type： 杂志文章
doi：10.1111/jeb.12734
更新日期：2015-11-01 00:00:00
abstract：:Dispersal is one of the most important precopulatory inbreeding avoidance mechanisms and subject to landscape related selection pressures. In small populations, inbreeding within and between populations may strongly affect population dynamics if it reduces fitness and gene-flow. While inbreeding avoidance is generally...
journal_title：Journal of evolutionary biology
pub_type： 杂志文章
doi：10.1111/j.1420-9101.2009.01756.x
更新日期：2009-07-01 00:00:00
abstract：:In social insects, the emergence of multiple queening is linked to changes in a suite of traits such as the reproductive life span of queens, mating patterns and population structure. We investigated queen turnover, colony longevity, spatial distribution patterns and genetic differentiation in a population of the soci...
journal_title：Journal of evolutionary biology
pub_type： 杂志文章
doi：10.1111/j.1420-9101.2007.01345.x
更新日期：2007-07-01 00:00:00
abstract：:Polymorphic inversions are ubiquitous across the animal kingdom and are frequently associated with clines in inversion frequencies across environmental gradients. Such clines are thought to result from selection favouring local adaptation; however, empirical tests are scarce. The seaweed fly Coelopa frigida has an α/β...
journal_title：Journal of evolutionary biology
pub_type： 杂志文章
doi：10.1111/jeb.13064
更新日期：2017-06-01 00:00:00
abstract：:Intraspecific cooperation and interspecific mutualism often feature a marked asymmetry in the scope for exploitation. Cooperation may nevertheless persist despite one-sided opportunities for cheating, provided that the partner vulnerable to exploitation has sufficient control over the duration of interaction. The effe...
journal_title：Journal of evolutionary biology
pub_type： 杂志文章
doi：10.1111/j.1420-9101.2008.01505.x
更新日期：2008-05-01 00:00:00
abstract：:It has often been argued that evolutionary diversification is the result of divergent natural selection for specialization on alternative resources. I provide a comprehensive review of experiments that examine the ecology and genetics of resource specialization and adaptive radiation in microbial microcosms. In these ...
journal_title：Journal of evolutionary biology
pub_type： 杂志文章,评审
doi：10.1111/j.1420-9101.2005.00931.x
更新日期：2005-11-01 00:00:00
