Spatio-temporal patterns of genetic variation in Arbacia lixula, a thermophilous sea urchin in expansion in the Mediterranean.

abstract：:Hybridization between crops and their weedy or wild relatives is an area of concern because the widespread use of genetically engineered crops may allow novel, beneficial transgenes to enter nearby populations. We compared fitness components of wild Cucurbita pepo from Arkansas, USA, with wild-crop hybrids derived fro...

journal_title：Heredity

authors： Spencer LJ,Snow AA

更新日期：2001-06-01 00:00:00

abstract：:Genetic architecture and phenotypic plasticity are important considerations when studying trait variation within and among populations. Since environmental change can induce shifts in the genetic architecture and plasticity of traits, it is important to consider both genetic and environmental sources of phenotypic var...

journal_title：Heredity

authors： Venney CJ,Wellband KW,Heath DD

更新日期：2021-01-01 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

authors： Aubret F

更新日期：2015-10-01 00:00:00

abstract：:Investigations into the genetic basis of reproductive barriers among recognized and putative varieties in Phacelia dubia have provided evidence that even among closely related taxa, multiple pathways can lead to reproductive isolation. A nuclear-based reproductive barrier, expressed as partial hybrid sterility of both...

journal_title：Heredity

authors： Levy F

更新日期：1991-12-01 00:00:00

abstract：:Allozyme electrophoresis was used to determine amount and structure of genetic variation within and between five congeneric haploid moss species: Polytrichum formosum, P. commune, P. uliginosum, P. piliferum and P. juniperinum. For the different species, gene diversity within populations (HS) ranged from very low (0.0...

journal_title：Heredity

authors： Van Der Velde M,Bijlsma R

更新日期：2000-10-01 00:00:00

abstract：:This study characterized the genetic diversity of four populations of Ilex paraguariensis, a plant species native to South America, using random amplified polymorphic DNA (RAPD) markers. A total of 341 different RAPD bands were generated by the 15 primers analysed. High genetic variability was detected within each pop...

journal_title：Heredity

authors： Gauer L,Cavalli-Molina S

更新日期：2000-06-01 00:00:00

abstract：:RAPD-PCR polymorphisms at 57 presumptive loci were used to examine the breeding structure of the mosquito Aedes aegypti in Puerto Rico. Mosquitoes were sampled from 16 locations in six cities and samples were located in a nested spatial design to examine local patterns of gene flow. Allele frequencies were estimated a...

journal_title：Heredity

authors： Apostol BL,Black WC 4th,Reiter P,Miller BR

更新日期：1996-04-01 00:00:00

abstract：:In plant species with mixed mating systems, differences in diverse factors-including their pollination system, flowering phenology, life form and susceptibility to inbreeding depression-cause variation in outcrossing rates among fruits within individuals, among individuals within populations and among populations with...

journal_title：Heredity

authors： Tamaki I,Setsuko S,Tomaru N

更新日期：2009-04-01 00:00:00

abstract：:Several classes of models have been suggested to explain how natural selection can favour non-zero recombination. Directional and fluctuating selection, abiotic and biotic, and selection against harmful mutations seem to be the most plausible factors, but little has been done to test the problem experimentally. Here w...

journal_title：Heredity

authors： Korol AB,Iliadi KG

更新日期：1994-01-01 00:00:00

abstract：:The long generation time and large effective size of widespread forest tree species can result in slow evolutionary rate and incomplete lineage sorting, complicating species delimitation. We addressed this issue with the African timber tree genus Milicia that comprises two morphologically similar and often confounded ...

journal_title：Heredity

authors： Daïnou K,Mahy G,Duminil J,Dick CW,Doucet JL,Donkpégan AS,Pluijgers M,Sinsin B,Lejeune P,Hardy OJ

更新日期：2014-07-01 00:00:00

abstract：:Nothofagus cunninghamii is a long-lived, wind-pollinated tree species that dominates the cool temperate rainforests of southeastern Australia. The species' distribution is more or less continuous in western Tasmania but is fragmented elsewhere. However, it is unknown whether this fragmentation has affected the species...

journal_title：Heredity

authors： Duncan CJ,Worth JR,Jordan GJ,Jones RC,Vaillancourt RE

更新日期：2016-01-01 00:00:00

abstract：:Tissue and blood samples from 180 fallow deer (Dama dama L.) belonging to an Italian free-ranging population were studied for biochemical variability by means of cellulose acetate and polyacrylamide gel electrophoresis. The 51 putative genetic loci successfully resolved showed a very low level of variability (P = 0.02...

journal_title：Heredity

authors： Randi E,Apollonio M

更新日期：1988-12-01 00:00:00

abstract：:The influence of population size and spatial isolation on contemporary gene flow by pollen and mating patterns in temperate forest trees are not well documented, although they are crucial factors in the life history of plant species. We analysed a small, isolated population and a large, continuous population of the in...

journal_title：Heredity

authors： Hoebee SE,Arnold U,Düggelin C,Gugerli F,Brodbeck S,Rotach P,Holderegger R

更新日期：2007-07-01 00:00:00

abstract：:Since transgenic crops expressing Bacillus thuringiensis (Bt) toxins were first released, resistance evolution leading to failure in control of pests populations has been observed in a number of species. Field resistance of the moth Busseola fusca was acknowledged 8 years after Bt maize was introduced in South Africa....

journal_title：Heredity

authors： Campagne P,Capdevielle-Dulac C,Pasquet R,Cornell SJ,Kruger M,Silvain JF,LeRü B,Van den Berg J

更新日期：2017-04-01 00:00:00

abstract：:The vertical transmission of Wolbachia in two species of spider mite was investigated and compared. One species, Tetranychus kanzawai Kishida, was infected with a modification negative strain of Wolbachia while the other species, Panonychus mori Yokoyama, was infected with a modification positive strain. The infection...

journal_title：Heredity

authors： Hong XY,Gotoh T,Nagata T

更新日期：2002-03-01 00:00:00

abstract：:Population genetic signatures of local adaptation are frequently investigated by identifying loci with allele frequencies that exhibit high correlation with ecological variables. One difficulty with this approach is that ecological associations might be confounded by geographic variation at selectively neutral loci. H...

journal_title：Heredity

authors： Frichot E,Schoville SD,de Villemereuil P,Gaggiotti OE,François O

更新日期：2015-07-01 00:00:00

abstract：:The genetic differentiation of populations is usually studied by using the equilibrium theory of Wright's infinite island model. In practice, however, populations are not always in equilibrium, and the number of subpopulations is often very small. To get some insight into the dynamics of genetic differentiation of the...

journal_title：Heredity

authors： Varvio SL,Chakraborty R,Nei M

更新日期：1986-10-01 00:00:00

abstract：:Genome and body sizes were measured in 38 species of turbellarian flatworms and 16 species of copepod crustaceans. Significant positive relationships existed between genome size and body size in both groups. The slopes of these regressions indicated that increases in cell volume are reinforced by increased cell number...

journal_title：Heredity

authors： Gregory TR,Hebert PD,Kolasa J

更新日期：2000-02-01 00:00:00

abstract：:In early 1992, the European bumblebee, Bombus terrestris, was first seen in Tasmania and currently has spread to most of the island. Here, we report on the genetic structure, using micro-satellites, of the invading population from samples collected in the years 1998-2000, a few years after the first sighting of the sp...

journal_title：Heredity

authors： Schmid-Hempel P,Schmid-Hempel R,Brunner PC,Seeman OD,Allen GR

更新日期：2007-10-01 00:00:00

abstract：:Determination of mammalian sex depends on the presence or absence of a functional testis. Testes are determined by the activity of the testis determining factor encoded by the sex determining gene, Y (SRY) located on the Y chromosome. Considerable evidence suggests that the SRY gene is the only gene on the Y chromosom...

journal_title：Heredity

authors： McElreavey K,Barbaux S,Ion A,Fellous M

更新日期：1995-12-01 00:00:00

abstract：:Recent studies concerning molecular mechanisms of genetic recombination in eukaryotes are reviewed. Since many of these studies have focused on the testable predictions arising from the hybrid DNA theory of genetic recombination, this theory is summarised. Experiments to determine the time of meiotic crossing-over and...

journal_title：Heredity

authors： Pukkila PJ

更新日期：1977-10-01 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

authors： Armitage SA,Siva-Jothy MT

更新日期：2005-06-01 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

authors： Saintagne C,Bodénès C,Barreneche T,Pot D,Plomion C,Kremer A

更新日期：2004-01-01 00:00:00

abstract：:Haploid nuclear DNA of 23 species of Aedes, as determined by Feulgen cytophotometry, was found to vary 3-fold. This was accompanied by a 2-fold variation in total chromosomal length. There was a significant correlation (r = 0.765, P less than 0.001) between these two parameters. Genome size varied from 0.87 pg to 1.3 ...

journal_title：Heredity

authors： Rao PN,Rai K

更新日期：1987-10-01 00:00:00

abstract：:Understanding the local and regional patterns of species distributions has been a major goal of ecological and evolutionary research. The notion that these patterns can be understood through simple quantitative rules is attractive, but while numerous scaling laws exist (e.g., metabolic, fractals), we are aware of no s...

journal_title：Heredity

authors： Bangert RK,Lonsdorf EV,Wimp GM,Shuster SM,Fischer D,Schweitzer JA,Allan GJ,Bailey JK,Whitham TG

更新日期：2008-02-01 00:00:00

abstract：:We have studied in Drosophila melanogaster the effects of allozyme variation at the alpha Gpdh and Adh loci on the following fitness components: female fecundity, egg hatchability, egg-to-adult survival under near-optimal and competitive conditions, rate of development under near-optimal and competitive conditions, an...

journal_title：Heredity

authors： Izquierdo JI,Rubio J

更新日期：1989-12-01 00:00:00

abstract：:Plant breeders are supported by a range of tools that assist them to make decisions about the conduct or design of plant breeding programs. Simulations are a strategic tool that enables the breeder to integrate the multiple components of a breeding program into a number of proposed scenarios that are compared by a ran...

journal_title：Heredity

authors： Hoyos-Villegas V,Arief VN,Yang WH,Sun M,DeLacy IH,Barrett BA,Jahufer Z,Basford KE

更新日期：2019-05-01 00:00:00

abstract：:The expression of three putative QTL for upper thermal tolerance (UTT) was examined in two strains of outbred rainbow trout unselected for this trait using simple-sequence repeat (SSR; microsatellite) markers associated with UTT in backcrosses of lines selected on this trait. Two-way diallel lots in the third generati...

journal_title：Heredity

authors： Perry GM,Danzmann RG,Ferguson MM,Gibson JP

更新日期：2001-03-01 00:00:00

abstract：:Advances in sequencing technologies have revolutionized wildlife conservation genetics. Analysis of genomic data sets can provide high-resolution estimates of genetic structure, genetic diversity, gene flow, and evolutionary history. These data can be used to characterize conservation units and to effectively manage t...

journal_title：Heredity

authors： Ewart KM,Lo N,Ogden R,Joseph L,Ho SYW,Frankham GJ,Eldridge MDB,Schodde R,Johnson RN

更新日期：2020-09-01 00:00:00

abstract：:Host-plant resistance is an effective method for controlling soybean aphid (Aphis glycines Matsumura), the most damaging insect pest of soybean (Glycine max (L.) Merr.) in North America. Recently, resistant soybean lines have been discovered and at least four aphid resistance genes (Rag1, Rag2, Rag3 and rag4) have bee...

journal_title：Heredity

authors： Jun TH,Rouf Mian MA,Michel AP

更新日期：2013-07-01 00:00:00