Abstract:
:A cytobiotaxonomic study of the medically important insect vector Simulium ochraceum s.l. revealed two sibling species and one cytotype from various endemic and nonendemic zones of human onchocerciasis in Guatemala and Mexico. Polytene chromosome maps and idiograms as well as notes on the biology of the three taxa designated S. ochraceum A, S. ochraceum B, and S. ochraceum C within the subgenus Psilopelmia are presented. All three taxa exhibit distinct sex chromosomes and taxon-specific suites of autosomal inversion polymorphisms. Simulium ochraceum C differs from both S. ochraceum A and S. ochraceum B by five interspecific inversions designated IIS-7,8 and IIIL-12, 13 + 14, 15. The three taxa exhibit niche and biting preferences, with S. ochraceum A being highly anthropophilic. Analysis of autosomal inversion polymorphism profiles indicates S. ochraceum A has long-range dispersal capability. Our results are consistent with the general findings that in the Simuliidae, sibling speciation may be suspected wherever a morphospecies occupies different niches in a stream continuum. We find for the first time an apparent partitioning of taxa by altitude. Simulium ochraceum A may be a primary vector of human onchocerciasis in Guatemala, as its vertical distribution is coincident with that of the highest areas of nodule prevalence in the human population. A genotypic component of variation in vectorial capacity of S. ochraceum A populations seems to occur, since the Y4 chromosome and its X chromosome counterpart are associated with hyperendemic areas of human onchocerciasis. Our observation that a supernumerary band, 37B1Hb, is associated with sex determination in two of the taxa may be of significance for the elucidation of the molecular basis of sex determination and possible resolution of issues pertinent to the general model of sympatric speciation in the Simuliidae.
journal_name
Genomejournal_title
Genomeauthors
Hirai H,Procunier WS,Ochoa JO,Uemoto Kdoi
10.1139/g94-006subject
Has Abstractpub_date
1994-02-01 00:00:00pages
36-53issue
1eissn
0831-2796issn
1480-3321pii
g94-006journal_volume
37pub_type
杂志文章相关文献
GENOME文献大全abstract::Genomic in situ hybridization (GISH) is one of the most popular and effective techniques for detecting alien chromatin introgressed into breeding lines; however, GISH analysis alone does not reveal the genetic identity of the alien chromosomes. We previously isolated a set of bacterial artificial chromosomes (BACs) sp...
journal_title:Genome
pub_type: 杂志文章
doi:
更新日期:2001-08-01 00:00:00
abstract::Mutations in High temperature requirement A2 (HtrA2), also designated PARK13, which lead to the loss of its protease activity, have been associated with Parkinson's disease (PD). HtrA2 is a mitochondrial protease that translocates to the cytosol upon the initiation of apoptosis where it participates in the abrogation ...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/gen-2016-0069
更新日期:2017-01-01 00:00:00
abstract::A novel population consisted of a set of 99 near isogenic lines (NILs) and backcross recombinant inbred lines (BCRILs) derived from a cross between the cultivated tomato Lycopersicon esculentum cv. E6206 and L. hirsutum accession LA1777 is presented. Most of the lines contain a single defined introgression from L. hir...
journal_title:Genome
pub_type: 杂志文章
doi:
更新日期:2000-10-01 00:00:00
abstract::C-banded slides stained with DAPI or chromomycin A3 show different banding patterns between human and L929 mouse cell line metaphase chromosomes, which are also different from those obtained with standard Giemsa C-banding or fluorochrome staining. Human metaphase chromosomes pretreated for C-banding and stained with D...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g95-114
更新日期:1995-10-01 00:00:00
abstract::The abundance, genomic organization, species distribution, and structure of 33 distinct families of repetitive DNA in Phytophthora are described. The families were identified by screening a library of Phytophthora infestans DNA for repetitive sequences. These was subsequently characterized within 26 species distribute...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g98-060
更新日期:1998-08-01 00:00:00
abstract::We sequenced the entire coding region of the mitochondrial genome of Heterodera glycines. The sequence obtained comprised 14.9 kb, with PCR evidence indicating that the entire genome comprised a single, circular molecule of approximately 21-22 kb. The genome is the most T-rich nematode mitochondrial genome reported to...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g11-024
更新日期:2011-07-01 00:00:00
abstract::The molecular characterization of C-banded regions of Secale montanum Guss. by means of in situ hybridization was performed in order to provide new information about their chromosome structure relative to cultivated rye, Secale cereale L. Accurate identification of individual chromosomes was achieved using simultaneou...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g95-101
更新日期:1995-08-01 00:00:00
abstract::An interspecific Gossypium hirsutum x Gossypium barbadense backcross population of 75 BC1 plants was evaluated for 1014 markers. The map consists of 888 loci, including 465 AFLPs, 229 SSRs, 192 RFLPs, and 2 morphological markers, ordered in 37 linkage groups that represent most if not all of the 26 chromosomes, altoge...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g03-050
更新日期:2003-08-01 00:00:00
abstract::A mapping population of Paspalum simplex segregating for apomixis (asexual reproduction through seeds) was screened with AFLPs to find apomixis-linked markers. Four AFLPs linked to apomixis in coupling phase were found. Three of them did not show recombinants among the 87 individuals of the mapping population, whereas...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g02-014
更新日期:2002-06-01 00:00:00
abstract::In an initial investigation of differential expression of genes caused by cis-acting regulatory elements in rice, the lack of reproducibility led us to question the basic premise of allelic expression imbalance determination: namely that departures of cDNA expression ratios from those observed in genomic DNA provide u...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g2012-023
更新日期:2012-05-01 00:00:00
abstract::cis-Elements CArG bound by serum response factor (SRF) are presently being intensively studied, but little is known about the substitution pattern of functional CArG elements. Here, we have performed the first evolutionary analysis of CArGome in the human and mouse genome through bioinformatic methods and statistical ...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/G10-105
更新日期:2011-02-01 00:00:00
abstract::Quantitative trait loci (QTL) controlling traits associated with winterhardiness in barley (field survival, LT50, growth habit, and crown fructan content) were mapped to chromosome 7 in a population of 100 F1-derived doubled haploid lines. The largest QTL effects for all traits were detected in a 21% recombination int...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g93-009
更新日期:1993-02-01 00:00:00
abstract::Recessive mlo alleles of the barley Mlo gene confer resistance to almost all known isolates of the powdery mildew fungal pathogen targeting barley (Hordeum vulgare). To characterize haplotypes present in the Mlo chromosomal region of cultivated Mlo and mlo barley genotypes, we conducted a polymorphism search in 3 pred...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g06-044
更新日期:2006-08-01 00:00:00
abstract::Three long terminal repeat (LTR) sequences of Ty1-copia retrotransposons were identified in cucumber (Cucumis sativus L.) and named Tcs 1, Tcs 2, and Tcs 3. A sequence-specific amplification polymorphism (SSAP) marker system based on these LTR sequences displayed a higher level of polymorphism than AFLPs in cucumber. ...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g07-067
更新日期:2007-09-01 00:00:00
abstract::Seventeen morphological marker genes were associated with restriction fragment length polymorphism markers in rice by using four F2 populations, each segregating for a few observable traits, and 14 near isogenic lines (NILs), each containing one morphological mutant gene. The location of five genes was confirmed on th...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g95-073
更新日期:1995-06-01 00:00:00
abstract::This paper describes the detection of a polymorphism within the growth hormone (GH) gene of the fish barramundi (Lates calcarifer). PCR amplification of barramundi genomic DNA generated three different sized products: A, 409 bp; B, 478 bp; and H, 520 bp. Each barramundi isolate displayed one of four different types of...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g96-117
更新日期:1996-10-01 00:00:00
abstract::Selection of wheat germplasm for a range of quality traits has been a challenging exercise because of the cost of testing, the variation within testing data, and a poor understanding of the underlying genetics. The objective of this study was to identify quantitative trait loci (QTLs) underlying quality traits in whea...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g09-045
更新日期:2009-08-01 00:00:00
abstract::The first quantitative trait locus (QTL) analysis of multiple agronomic traits in the model legume Lotus japonicus was performed with a population of recombinant inbred lines derived from Miyakojima MG-20 x Gifu B-129. Thirteen agronomic traits were evaluated in 2004 and 2005: traits of vegetative parts (plant height,...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g07-040
更新日期:2007-07-01 00:00:00
abstract::The evolution of karyotypically stabilized short-lived (SL) and long-lived (LL) cytoraces in the laboratory have been established and validated through our previous lifespan studies. In the present investigation, we examined the possible reason(s) for the differential longevity among selected members of SL and LL cyto...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g11-049
更新日期:2011-10-01 00:00:00
abstract::Complex chromosome rearrangements (CCRs) are defined as structural abnormalities involving more than two chromosome breaks, coupled with exchanges of chromosomal segments. Information on CCRs in plants is limited. In the present study, a plant (26-4) harboring translocation chromosomes 1RS.1BL and 4RS.4DL was selected...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/gen-2016-0112
更新日期:2016-12-01 00:00:00
abstract::A novel storage protein gene with obvious [corrected] chimeric structure was isolated from an immature kernel-specific cDNA library prepared from the old Hungarian wheat [corrected] variety, Bánkúti 1201. This clone contains gamma-gliadin sequences in the 5' region and LMW-glutenin sequences on the 3' end. A frameshif...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g05-042
更新日期:2005-10-01 00:00:00
abstract::Twenty-nine lines with deletions in the Lr19 ('Indis') translocated chromosome segment were used to physically map three Thinopyrum RFLP loci as well as the Sr25 and Sd1 loci. From the data, the relative locations of marker loci on the translocation were determined as: Sd1, Xpsr165, Xpsr105, Xps129, Lr19, Wsp-D1, Sr25...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g96-126
更新日期:1996-10-01 00:00:00
abstract::Restriction endonuclease TaqI has been known as a nonbanding restriction endonuclease when it is used on fixed human chromosomes. However, a specific TaqI digestion can be obtained after varying experimental conditions such as concentration of enzyme, time of incubation, and volume of the final reaction mixture. This ...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g91-039
更新日期:1991-04-01 00:00:00
abstract::Numerous quantitative trait loci (QTL) have been detected in Brassica species, but fine-mapping of major QTL has advanced slowly. The development of functional markers can overcome this barrier. We used publicly available PlantGDB-assembled unique transcripts (PUTs) from Brassica species to design 7836 functional simp...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g11-042
更新日期:2011-09-01 00:00:00
abstract::In the root meristem cells of the rice line AMR, which causes loss of heterozygosity in its hybrids, both normal and assortment mitoses were observed. During normal mitosis, chromosomes did not form homologous pairs at metaphase; all chromosomes lined up at the equatorial plate and 2 chromatids of each chromosome disj...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g06-015
更新日期:2006-05-01 00:00:00
abstract::Cashew (Anacardium occidentale L.), introduced into India about 400 years ago, is distributed widely in the coastal regions as spontaneous populations as well as in cultivation. Despite the plant's commercial exploitation, little is known about its actual introduction and diversification. We attempted to construct the...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/G08-119
更新日期:2009-03-01 00:00:00
abstract::We tested for complementation between two Mendelian mutations in mice, Far (first arch) and lgGa (lidgap-Gates). Each of these mutations gives greater than 70% risk of the birth defect, open eyelids, in homozygotes and gives little or no risk in heterozygotes. Far and lgGa are known to not be alleles; Far maps to Chr ...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g98-089
更新日期:1998-12-01 00:00:00
abstract::Brachypodium distachyon has been proposed as a model plant for agriculturally important cereal crops such as wheat and barley. Seed coat colour change from brown-red to yellow was observed in a mutant line (142-3) of B. distachyon, which was induced by chronic gamma radiation. In addition, dwarf phenotypes were observ...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/gen-2016-0145
更新日期:2017-07-01 00:00:00
abstract::Some aspects of Wright's great contribution to quantitative genetics and animal breeding are reviewed in relation to current research and practice. Particular aspects discussed are as follows: the utility of his definition of inbreeding coefficient in terms of the correlation of uniting gametes; the maintenance of gen...
journal_title:Genome
pub_type: 传,历史文章,杂志文章,评审
doi:10.1139/g89-033
更新日期:1989-01-01 00:00:00
abstract::Segregation patterns of polymorphic simple sequence repeat (SSR) primer pairs were investigated in monoploid potato families derived from anther culture. A total of 14 primers developed from the sequences in the database, as well as from a genomic library of potato, was used. Distorted segregation was observed for sev...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g01-140
更新日期:2002-04-01 00:00:00