Abstract：
:Induced triploidy (3N) in salmon results from a blockage of maternal meiosis II, and hence provides a unique opportunity to study dosage effects on phenotypic variance. Chinook salmon families were bred using a paternal half-sib breeding design (62 females and 31 males) and half of each resulting family was treated to induce triploidy. The paired families were used to test for dosage effects (resulting from triploidy) on (1) the distribution and magnitude of phenotypic variation, (2) narrow-sense heritability and (3) maternal effects in fitness-related traits (i.e., survival, size-at-age, relative growth rate and serum lysozyme activity). Quantitative genetic analyses were performed separately for diploid and triploid family groups. Triploidization resulted in significantly higher levels of phenotypic variance and substantial differences in patterns of variance distribution for growth and survival-related traits, although the patterns were reversed for lysozyme activity. Triploids exhibited higher narrow sense heritability values relative to diploid Chinook salmon. However, maternal effects estimates were generally lower in triploids than in diploids. Thus, the dosage effects resulting from adding an extra set of chromosomes to the Chinook salmon genome are primarily additive. Somewhat counterintuitively, however, the relative magnitude of the combined effects of dominance, epistasis and maternal effects is not affected by dosage. Our results indicate that inheritance of fitness-related quantitative traits is profoundly affected by dosage effects associated with induced triploidy, and that triploidization can result in unpredictable performance and fitness outcomes.
journal_name
Heredity (Edinb)journal_title
Heredityauthors
Johnson RM,Shrimpton JM,Cho GK,Heath DDdoi
10.1038/sj.hdy.6800941subject
Has Abstractpub_date
2007-05-01 00:00:00pages
303-10issue
5eissn
0018-067Xissn
1365-2540pii
6800941journal_volume
98pub_type
杂志文章相关文献
HEREDITY文献大全abstract：:The theory, construction and optimization of a model of chromosome pairing in triploid hybrids are re-examined and the model reconstructed. A new approach to optimization is described that removes a bias in the estimation of x, the measure of relative affinity, by weighting the observed and calculated meiotic figure f...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/hdy.1992.16
更新日期：1992-02-01 00:00:00
abstract：:The genetic control of self-incompatibility (SI) was studied in the Mediterranean short-lived perennial species Anagallis monelli (Primulaceae: Myrsinaceae). Arrays of siblings, including families derived from reciprocal crosses, were cross-pollinated in full diallels, and compatibility groups were assesssed from a ce...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1046/j.1365-2540.2001.00951.x
更新日期：2001-11-01 00:00:00
abstract：:Recent molecular genetic analyses of Drosophila melanogaster and mouse central nervous system (CNS) development revealed strikingly similar genetic patterning mechanisms in the formation of the insect and vertebrate brain. Thus, in both insects and vertebrates, the correct regionalization and neuronal identity of the ...
journal_title：Heredity
pub_type： 杂志文章,评审
doi：10.1038/sj.hdy.6800664
更新日期：2005-05-01 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：:Patterns of pollen dispersal were investigated in a small, isolated, relict population of Pinus sylvestris L., consisting of 36 trees. A total-exclusion battery comprising four chloroplast and two nuclear microsatellites (theoretical paternity exclusion probability EP=0.996) was used to assign paternity to 813 seeds, ...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/sj.hdy.6800542
更新日期：2005-01-01 00:00:00
abstract：:Here I develop the idea that ubiquitous harmful genome-wide mutation with local differentiation favors dispersal, even though migration reduces average fitness. Historical contingency of the mutational process means that demes (sub-populations) differentiate from one another. Deleterious or lethal partially recessive ...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/sj.hdy.6800143
更新日期：2002-10-01 00:00:00
abstract：:The study of local adaptation is rendered difficult by many evolutionary confounding phenomena (for example, genetic drift and demographic history). When complex traits are involved in local adaptation, phenomena such as phenotypic plasticity further hamper evolutionary biologists to study the complex relationships be...
journal_title：Heredity
pub_type： 杂志文章,评审
doi：10.1038/hdy.2015.93
更新日期：2016-03-01 00:00:00
abstract：:Temperature-dependent sex determination (TSD) was first reported in 1966 in an African lizard. It has since been shown that TSD occurs in some fish, several lizards, tuataras, numerous turtles and all crocodilians. Extreme temperatures can also cause sex reversal in several amphibians and lizards with genotypic sex de...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/hdy.2010.102
更新日期：2011-04-01 00:00:00
abstract：:We have developed a new model for mating system analysis, which attempts to distinguish among alternative modes of self-oriented mating within populations. This model jointly estimates the rates of outcrossing, selfing, automixis and apomixis, through the use of information in the family structure given by dominant ge...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/sj.hdy.6800844
更新日期：2006-08-01 00:00:00
abstract：:The frequency of B chromosomes has been determined for several stages in the grasshopper life-cycle, over three generations, in three natural populations spanning a steep cline in East Anglia. This has revealed a rise in B frequency in prediapause eggs, a fall during the winter in the embryos and a rise in the early n...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/hdy.1976.47
更新日期：1976-06-01 00:00:00
abstract：:Six populations of Trimerotropis pallidipennis located along an altitudinal gradient in the Antinaco-Los Colorados valley (La Rioja, Argentina), were cytologically analysed. The male karyotype consists of 23 chromosomes (22 + XO) with three long pairs submetacentric, the X-chromosome metacentric and the remaining ones...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/hdy.1989.14
更新日期：1989-02-01 00:00:00
abstract：:"Fisherian" models of sexual selection by female choice assume that females prefer male characters which are initially advantageous or neutral; character and preference then spread through the population. Once female preference has evolved to a higher frequency, the male character can become more extreme and disadvant...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/hdy.1988.44
更新日期：1988-04-01 00:00:00
abstract：:Multicellular organisms probably originated as groups of cells formed in several ways, including cell proliferation from a group of founder cells and aggregation. Cooperation among cells benefits the group, but may be costly (altruistic) or beneficial (synergistic) to individual cooperating cells. In this paper, we st...
journal_title：Heredity
pub_type： 杂志文章,评审
doi：10.1046/j.1365-2540.2001.00808.x
更新日期：2001-01-01 00:00:00
abstract：:The a priori probability of noticeable linkage among all conceivable experiments of the size reported by Mendel cannot reasonably be taken as greater than 24-36 per cent; and therefore, the frequently heard opinion that his chances of encountering linkage were high, approaching 99-4 per cent, appears to be mistaken. ...
journal_title：Heredity
pub_type： 传,历史文章,杂志文章
doi：10.1038/hdy.1977.30
更新日期：1977-04-01 00:00:00
abstract：:Experiments were carried out to correlate the cytological localization of DNA polymerase alpha with the presence of its specific mRNA in human lymphocytes studied at different times after phytohaemagglutinin stimulation. Our data indicated that in resting cells it is not possible to detect DNA polymerase alpha protein...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/hdy.1996.123
更新日期：1996-08-01 00:00:00
abstract：:This corrects the article DOI: 10.1038/hdy.2015.89. ...
journal_title：Heredity
pub_type： 杂志文章,已发布勘误
doi：10.1038/hdy.2017.38
更新日期：2017-11-01 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：:A type of lower motor neuron (LMN) disease inherited as autosomal recessive in Romney sheep was characterized with normal appearance at birth, but with progressive weakness and tetraparesis after the first week of life. Here, we carried out genome-wide homozygosity mapping using Illumina Ovine SNP50 BeadChips on lambs...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/hdy.2012.23
更新日期：2012-09-01 00:00:00
abstract：:A cline in the frequency of melanic morphs of the two-spot ladybird, Adalia bipunctata, was first surveyed in 1980 along a transect extending inland from the coast in the Netherlands. At that time, the frequency of melanics increased over some 40 km from 10% near the coast to nearly 60% inland. Additional surveys made...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/hdy.2011.49
更新日期：2011-12-01 00:00:00
abstract：:In the past, numerous Cf genes have been reported in tomato (Lycopersicon esculentum Mill.) that confer resistance against leaf mould (Cladosporium fulvum Cke.). We are interested in genetic variation at Cf loci. Therefore, previously uncharacterized Cf genes were further analysed. Recognition of the AVR4 elicitor, DN...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1046/j.1365-2540.2000.00754.x
更新日期：2000-09-01 00:00:00
abstract：:Many herbicide-resistant weed species are polyploids, but far too little about the evolution of resistance mutations in polyploids is understood. Hexaploid wild oat (Avena fatua) is a global crop weed and many populations have evolved herbicide resistance. We studied plastidic acetyl-coenzyme A carboxylase (ACCase)-in...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/hdy.2012.69
更新日期：2013-03-01 00:00:00
abstract：:We examine seven geographically separate subpopulations of Heliconius charithonia, a butterfly with well-documented home range behaviour, in Miami-Dade County, Florida, for genetic differentiation using cellulose acetate electrophoresis. These subpopulations exhibit little genetic variation (percent polymorphic loci =...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1046/j.1365-2540.2001.00830.x
更新日期：2001-02-01 00:00:00
abstract：:Recent studies in empirical population genetics have highlighted the importance of taking into account both neutral and adaptive genetic variation in characterizing microevolutionary dynamics. Here, we explore the genetic population structure and the footprints of selection in four populations of the warm-temperate co...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/hdy.2011.120
更新日期：2012-05-01 00:00:00
abstract：:Natural populations of the arctic fox (Alopex lagopus, Canidae, Carnivora) differ drastically in their reproductive strategy. Coastal foxes, which depend on stable food resources, produce litters of moderate size. Inland foxes feed on small rodents, whose populations are characterized by cycling fluctuation. In the ye...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/sj.hdy.6800908
更新日期：2007-02-01 00:00:00
abstract：:Prevention of malaria transmission throughout much of Africa is dependent on bednets that are impregnated with pyrethroid insecticides. Anopheles arabiensis is the major malaria vector in Chad and efforts to control this vector are threatened by the emergence of pyrethroid resistance. WHO bioassays revealed that An. a...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/hdy.2012.112
更新日期：2013-04-01 00:00:00
abstract：:Several studies on 5S ribosomal DNA (5S rDNA) have been focused on a subset of the following features in mostly one organism: number of copies, pseudogenes, secondary structure, promoter and terminator characteristics, genomic arrangements, types of non-transcribed spacers and evolution. In this work, we systematicall...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/hdy.2013.63
更新日期：2013-11-01 00:00:00
abstract：:The course of adaptation to heterogeneous environments is influenced by the magnitude of genetic variation for ecologically important characters within each environment and the extent of genotype x environment interaction. Using the genetic correlation between the expression of characters in different environments as ...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/hdy.1995.10
更新日期：1995-01-01 00:00:00
abstract：:Fisher's model for the evolution of dominance indicates that the accumulation of dominance modifiers will be accelerated by (1) an increased frequency of the mutant heterozygote, (2) increased selection for the phenotype of the normal homozygote. The model has been criticised by Haldane on the grounds that point (1) i...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/hdy.1977.13
更新日期：1977-02-01 00:00:00
abstract：:Many traits including shapes and colors of flowers, fruits and seeds in plants, as well as coat colors and some behavioral properties in animals, are recorded in discrete categories. If categories are ordered, genetic analyses of the categorical traits are often performed using the threshold model, which considers a l...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/sj.hdy.6800783
更新日期：2006-02-01 00:00:00
abstract：:Natural populations of Drosophila robusta are polymorphic for chromosomal gene arrangements in most of its range, the deciduous forests of North America east of the Rocky Mountains. Many of the gene arrangements are the result of paracentric inversions on both arms of the metacentric second chromosome. They are freque...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1046/j.1365-2540.1998.00341.x
更新日期：1998-06-01 00:00:00
