Abstract:
:A conspicuous shell polychromatism is observed in colonies of Cepaea nemoralis from western France (Brittany). The present study is intended to search for a spatial structure of shell features at this scale and to infer evolutionary processes from the observed patterns. We used a database of morph frequencies (six composite phenotypes were retained) measured on 213 samples regularly distributed on the whole studied area. Data analysis was based on two distinct multivariate methods leading to the following steps: (i) to search for a structure without reference to environmental conditions with a method (global principal components analysis: GPCA) which takes into account the spatial information by means of a neighbouring relationship between sampling points (Delaunay triangulation); (ii) to test the structuring power of environmental conditions by means of two explanatory factors (distance from the sea, altitude) involved in a redundancy analysis (RDA); (iii) to search for a spatial structure using residuals of the previous analysis, ie, after removing effects of environmental conditions. Global covariance accounted for 26.4% of the total variance, leading to a highly significant autocorrelation for each phenotype (step 1). Geographical mapping of factorial scores resulting from global analysis showed a well structured littoral zone and a strong southern-northern inland differentiation. Sixteen percent of the total variance was expressed in RDA but all morphs were not equally concerned. After removing environmental effects, a significant spatial structure still remains but was essentially caused by random processes. We argue for the importance of these last phenomena.
journal_name
Heredity (Edinb)journal_title
Heredityauthors
Bellido A,Madec L,Arnaud JF,Guiller Adoi
10.1038/sj.hdy.6800012keywords:
subject
Has Abstractpub_date
2002-01-01 00:00:00pages
75-82issue
1eissn
0018-067Xissn
1365-2540journal_volume
88pub_type
杂志文章相关文献
HEREDITY文献大全abstract::Pinewood nematode (Bursaphelenchus xylophilus) is an invasive species that causes a destructive forest disease-pine wilt disease. This disease has been prevalent in some countries in Asia since the 1970s. An amplified fragment length polymorphism survey was used to compare the genetic variation of native and invasive ...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/sj.hdy.6801082
更新日期:2008-04-01 00:00:00
abstract::Pedunculate oak and sessile oak are two sympatric interfertile species that exhibit leaf morphological differences. We aimed to detect quantitative trait loci (QTLs) of these traits in order to locate genomic regions involved in species differentiation. A total of 15 leaf morphological traits were assessed in a mixed ...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/sj.hdy.6800358
更新日期:2004-01-01 00:00:00
abstract::The teleost fish, medaka (Oryzias latipes), has an XX/XY sex-determining mechanism. A Y-linked DM domain gene, DMY, has been isolated by positional cloning as the sex-determining gene in this species. Previously, we conducted a field survey of genotypic sex and found that approximately 1% of wild medaka are sex-revers...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/hdy.2010.51
更新日期:2010-11-01 00:00:00
abstract::Pigmentation is one of the most variable traits within and between Drosophila species. Much of this diversity appears to be adaptive, with environmental factors often invoked as selective forces. Here, we describe the geographic structure of pigmentation in Drosophila americana and evaluate the hypothesis that it is a...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/hdy.2010.90
更新日期:2011-04-01 00:00:00
abstract::Genetic variation was studied in quantitative traits and molecular markers in six natural Scandinavian populations of Arabidopsis thaliana. Only two of the populations had several molecular marker haplotypes and significant between-family variance components in quantitative traits. There was no genetic variation in th...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/hdy.1997.137
更新日期:1997-08-01 00:00:00
abstract::Island colonisation by animal populations is often associated with dramatic shifts in body size. However, little is known about the rates at which these evolutionary shifts occur, under what precise selective pressures and the putative role played by adaptive plasticity on driving such changes. Isolation time played a...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/hdy.2014.65
更新日期:2015-10-01 00:00:00
abstract::Forty-two homozygous lines each isoallelic for the Esterase 6 (Est-6) locus were extracted from a natural population of Drosophila melanogaster. Homogenates of 4-5 day old virgin adults of each sex from several replicate cultures of each line were assayed for EST6 activity. Depending on the line, males had from three ...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/hdy.1989.4
更新日期:1989-02-01 00:00:00
abstract::The study of nuclear genealogies in natural populations of nonmodel organisms is expected to provide novel insights into the evolutionary history of populations, especially when developed in the framework of well-established mtDNA phylogeographical scenarios. In the Iberian Peninsula, the endemic Schreiber's green liz...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/sj.hdy.6800823
更新日期:2006-06-01 00:00:00
abstract::Although allelic variants at a locus usually are expressed either dominantly or co-dominantly, there are many cases when a gene is dominantly expressed in some individuals and co-dominantly in others. We present a maximum-likelihood procedure for allele frequency estimation in such situations of "incomplete" co-domina...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/hdy.1990.114
更新日期:1990-12-01 00:00:00
abstract::Volunteers deriving from unharvested seeds of a crop can lead to persistent feral populations and participate in genetic exchanges across the agro-ecosystem, both between crop varieties and between crops and their wild relatives. A first step to understand the importance of volunteers is to characterize their capacity...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/hdy.2009.156
更新日期:2010-10-01 00:00:00
abstract::In the silkworm, Bombyx mori, the female is the heterogametic (ZW) sex and the male is homogametic (ZZ). The female heterogamety is a typical situation in the insect order Lepidoptera. Although the W chromosome in silkworm is strongly female determining, no W-linked gene for a morphological character has been found on...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/sj.hdy.6800700
更新日期:2005-08-01 00:00:00
abstract::Effective population size over a generation (Ne) or over a reproductive cycle (Nb) and the adult census size (Nc) are important parameters in both conservation and evolutionary biology. Ne provides information regarding the rate of loss of genetic diversity and can be tracked back in time to infer demographic history ...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/hdy.2016.62
更新日期:2016-10-01 00:00:00
abstract::Correlated multiple testing is widely performed in genetic research, particularly in multilocus analyses of complex diseases. Failure to control appropriately for the effect of multiple testing will either result in a flood of false-positive claims or in true hits being overlooked. Cheverud proposed the idea of adjust...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/sj.hdy.6800717
更新日期:2005-09-01 00:00:00
abstract::We established three closed lines of N = 10 for the guppy Poecilia reticulata, to evaluate the relationships among temporal changes in allele frequency, genetic variation and inbreeding depression for a fitness-related trait in small populations. Genetic variation at the allozyme loci, expressed by the proportion of p...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1046/j.1365-2540.2001.00792.x
更新日期:2001-02-01 00:00:00
abstract::Here we show that sexual selection can have an effect on the rate of mutation. We simulated the fate of a genetic modifier of the mutation rate in a sexual population with and without sexual selection (modelled using a female choice mechanism). Female choice for 'good genes' should reduce variability among male subjec...
journal_title:Heredity
pub_type: 杂志文章,评审
doi:10.1038/sj.hdy.6800921
更新日期:2007-04-01 00:00:00
abstract::Deleterious mutations accumulating on non-recombining Y chromosomes can drive XY to XY turnovers, as they allow to replace the old mutation-loaded Y by a new mutation-free one. The same process is thought to prevent XY to ZW turnovers, because the latter requires fixation of the ancestral Y, assuming dominance of the ...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/s41437-019-0225-z
更新日期:2019-09-01 00:00:00
abstract::Cuticular colour in the mealworm beetle (Tenebrio molitor) is a quantitative trait, varying from tan to black. Population level variation in cuticular colour has been linked to pathogen resistance in this species and in several other insects: darker individuals are more resistant to pathogens. Given that cuticular col...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/sj.hdy.6800675
更新日期:2005-06-01 00:00:00
abstract::Recent molecular evidence has shown that many MHC polymorphisms are not only shared between species but are in fact identical at the molecular level. Species that share these polymorphisms may be very distantly related and often diverged millions of generations ago. It is now known that this phenomenon is very unlikel...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/hdy.1992.39
更新日期:1992-03-01 00:00:00
abstract::Fluctuating asymmetry (FA) has been proposed as a tool to measure levels of stress experienced by populations of organisms during development. To be of value as a bio-marker to highlight conditions at particular sites, it is important that variation in FA is due to environmental (eg pollution) variation and not geneti...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/sj.hdy.6800045
更新日期:2002-04-01 00:00:00
abstract::Twenty-eight spontaneous alterations modifying the hybridization banding pattern of six families of transposable elements (297, Foldback, copia, jockey, P and hobo) have been fixed in a set of mutation-accumulation lines of Drosophila melanogaster. Their effect on fitness has been studied by competition with the origi...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1046/j.1365-2540.1999.00590.x
更新日期:1999-12-01 00:00:00
abstract::How does genetic diversity within populations of plants develop during primary succession on alpine glacier forelands? Theory predicts that pioneer populations are characterized by low genetic diversity due to founder effects and that genetic diversity increases within populations as they mature and recurrent gene flo...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/hdy.2008.8
更新日期:2008-05-01 00:00:00
abstract::Prolific breeds of domestic sheep (Ovis aries) are important genetic resources due to their reproductive performance, which is characterized by multiple lambs per birth and out-of-season breeding. However, the lack of a comprehensive understanding of the genetic mechanisms underlying the important reproductive traits,...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/s41437-018-0090-1
更新日期:2019-02-01 00:00:00
abstract::Recent developments in the analysis of density dependent competition in Drosophila melanogaster have identified two distinct parameters, namely the competitive pressure or aggression exerted by a genotype and the sensitivity or response of a genotype to such aggression. Assuming that response is more related to the ef...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/hdy.1988.34
更新日期:1988-04-01 00:00:00
abstract::Quantitative trait locus (QTL) analysis detects regions of a genome that are linked to a complex trait. Once a QTL is detected, the region is narrowed by positional cloning in the hope of determining the underlying candidate gene-methods used include creating congenic strains, comparative genomics and gene expression ...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/hdy.2010.75
更新日期:2010-11-01 00:00:00
abstract::The sibling species Anopheles atroparvus and Anopheles labranchiae are cytogenetically almost indistinguishable. The chromosome complement (2n = 6) consists of two pairs of autosomes and two heteromorphic sex chromosomes with largely homologous heterochromatic long arms. Treatment of chromosome preparations with the r...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/hdy.1990.80
更新日期:1990-08-01 00:00:00
abstract::The theoretical impacts of anthropogenic habitat degradation on genetic resources have been well articulated. Here we use a simulation approach to assess the magnitude of expected genetic change, and review 31 studies of 23 neotropical tree species to assess whether empirical case studies conform to theory. Major diff...
journal_title:Heredity
pub_type: 杂志文章,评审
doi:10.1038/sj.hdy.6800725
更新日期:2005-10-01 00:00:00
abstract::To address the multiple challenges to food security posed by global climate change, population growth and rising incomes, plant breeders are developing new crop varieties that can enhance both agricultural productivity and environmental sustainability. Current breeding practices, however, are unable to keep pace with ...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/hdy.2015.113
更新日期:2016-04-01 00:00:00
abstract::Stable hybrid zones in which ecologically divergent taxa give rise to a range of recombinants are natural laboratories in which the genetic basis of adaptation and reproductive isolation can be unraveled. One such hybrid zone is formed by the fire-bellied toads Bombina bombina and B. variegata (Anura: Discoglossidae)....
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/sj.hdy.6800291
更新日期:2003-08-01 00:00:00
abstract::Colour polymorphisms have evolutionary significance for the generation and maintenance of species diversity. Demonstrating heritability of polymorphic traits can be challenging for wild populations of long-lived species because accurate information is required on trait expression and familial relationships. The Austra...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/s41437-019-0212-4
更新日期:2019-09-01 00:00:00
abstract::Porcellionides pruinosus is a cosmopolitan woodlouse. It is known to exhibit patterns of geographical variation between populations, and has been suspected to consist of several very closely related species. This species was found to carry Wolbachia endosymbionts, alpha-proteobacteria which are known to modify the rep...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1046/j.1365-2540.2001.00920.x
更新日期:2001-10-01 00:00:00