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26 results for “female sterility”
Complex basis of hybrid female sterility and Haldane's rule in Heliconius butterflies: Z-linkage and epistasis - RADseq and RNAseq reads, sterility phenotypes and pedigree
<p>RADseq and RNAseq reads (.fastq files), and sterility phenotypes and pedigree (.xlsx) using for QTL mapping of Heliconius pardalinus sterility crosses in Rosser, N., Edelman, N.B., Queste, L.M., Nelson, M., Seixas, F., Dasmahapatra, K.K. and Mallet, J., 2021. Complex basis of hybrid female sterility and Haldane’s rule in Heliconius butterflies: Z-linkage and epistasis, accepted for publication in Molecular Ecology. Queries to Neil Rosser (neil.rosser@york.ac.uk). </p> <p> </p>
Figure 1 in Ability of Sterile Males to Inhibit Female Remating in the Oriental Fruit Fly, Bactrocera dorsalis (Hendel) (Diptera: Tephritidae)
Figure 1. Numbers of rematings observed per cage for females first mated to fertile wild or sterile DTWP males at 3 intervals after the initial mating. Each cage held 10 test females. Symbols represent mean values + 1 SE; N = 8 in all cases.
Fig. 5 in Methods to separate Lobesia botrana (Lepidoptera: Tortricidae) males from females for the implementation of sterile insect-inherited sterility technique control tactics
Fig. 5. The percentages of male and female Lobesia botrana adults that emerged from the pupal stage on each consecutive d afer the onset of adult emergence.
Fig. 6 in Methods to separate Lobesia botrana (Lepidoptera: Tortricidae) males from females for the implementation of sterile insect-inherited sterility technique control tactics
Fig. 6. Distribution of Lobesia botrana male and female pupae based on the overall lengths of the pupae.
Fig. 3. R, G and B in Methods to separate Lobesia botrana (Lepidoptera: Tortricidae) males from females for the implementation of sterile insect-inherited sterility technique control tactics
Fig. 3. R, G and B color values of male and female Lobesia botrana larvae during the wandering phase. A. Average R, G and B color values of wandering male and female larvae, and B. Percentages of wandering red, green and blue larvae in relation to the R, G and B values as a proportion of total male and female larvae. * P = 0.001, Tukey α = 0.05.
Fig. 1 in Methods to separate Lobesia botrana (Lepidoptera: Tortricidae) males from females for the implementation of sterile insect-inherited sterility technique control tactics
Fig. 1. Lobesia botrana pupae indicating the number of abdominal segments in (A) male (4 segments), and (B) female pupae (3 segments) as measured from the abdomen tip to the wing's point, and (C) distance between the head and the abdomen tip as a measurement of pupal length.
Fig. 4 in Methods to separate Lobesia botrana (Lepidoptera: Tortricidae) males from females for the implementation of sterile insect-inherited sterility technique control tactics
Fig. 4. The percentages of wandering Lobesia botrana larvae that departed from their food on each consecutive day of the wandering phase and that sub- sequently developed into either adult males or adult females.
Fig. 1 in Ability of sterile males to inhibit female remating in the melon fly Zeugodacus cucurbitae (Diptera: Tephritidae)
Fig. 1. Numbers of rematings observed per cage for females first mated to wild or sterile males at 3 intervals afer the initial mating. Each cage held 10 test females. Symbols represent mean values ± 1 SE; N = 8 in all cases.
Data from: Genomic islands of differentiation in two songbird species reveal candidate genes for hybrid female sterility
Hybrid sterility is a common first step in the evolution of postzygotic reproductive isolation. According to Haldane's Rule it affects predominantly the heterogametic sex. While the genetic basis of hybrid male sterility in organisms with heterogametic males has been studied for decades, the genetic basis of hybrid female sterility in organisms with heterogametic females has received much less attention. We investigated the genetic basis of reproductive isolation in two closely related avian species, the Common Nightingale (Luscinia megarhynchos) and the Thrush Nightingale (L. luscinia), that hybridize in a secondary contact zone and produce viable hybrid progeny. In accordance with Haldane's Rule, hybrid females are sterile, while hybrid males are fertile, allowing gene flow to occur between the species. Using transcriptomic data from multiple individuals of both nightingale species we identified genomic islands of high differentiation (FST) and of high divergence (Dxy), and we analyzed gene content and patterns of molecular evolution within these islands. Interestingly, we found that these islands were enriched for genes related to female meiosis and metabolism. The islands of high differentiation and divergence were also characterized by higher levels of linkage disequilibrium than the rest of the genome in both species indicating that they might be situated in genomic regions of low recombination. This study provides one of the first insights into genetic basis of hybrid female sterility in organisms with heterogametic females.
Fig. 2 in Methods to separate Lobesia botrana (Lepidoptera: Tortricidae) males from females for the implementation of sterile insect-inherited sterility technique control tactics
Fig. 2. Fifh instar larvae of Lobesia botrana indicating various shades of blue and green.
Data from: Genomic islands of differentiation in two songbird species reveal candidate genes for hybrid female sterility
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Data from: A Z-linked sterility locus causes sexual abstinence in hybrid females and facilitates speciation in Spodoptera frugiperda
In the fall armyworm, Spodoptera frugiperda (Lepidoptera, Noctuidae), two sympatric strains have been recognized that have been termed corn strain (C) and rice strain (R), referring to their most common host plants. Both strains are reproductively isolated via a distinct prezygotic barrier as well as via an intriguing postzygotic phenomenon: when R females have mated with C males, the resulting RC hybrid females exhibit dramatically reduced fertility independent of their mating partner. Here we demonstrate that the reduced fertility is caused by the fact that these females refrain from mating, i.e. females are behaviorally sterile. We identified a Z-chromosomally linked sterility locus that is most likely incompatible with yet-to-be-identified autosomal (or cytoplasmic) factors leading to the observed sexual abstinence. Within-chromosome mapping revealed the sterility locus to be located in an area of strongly reduced inter-strain recombination.
FIGURE. Floral habit and structure of C. spongifolia. A. Type specimen in situ with open, spathe limb (apex is reflexed out of view), and green spathe tube (ca. 6 cm long). B. Adjacent plant with inflorescences and prophylls. C. Spadix showing from top: sterile appendix, staminate (male) zone, sterile interstice, and green pistillate (female) zone with tapered, conical form. D. Detail of female zone showing a few basal staminodes. E–G. Berries of the preserved type specimen. G. Dissected berry with orthotropous ovules (some outlined) attached by funicles to parietal placentae (arrows). H. Surface of male zone showing closely-packed synandria. I. Synandria separated to show fused anther sacs beneath apical pores (example in center has 8 pores, 8 anthers) J. Mature fruiting head, with single berry removed to show seed packing and 67 seeds extracted (scale bar units: 1 mm) (Bach Ma NP; type 2020; fruit and seeds 2018). Photos: NVD and PJM. in Colocasia spongifolia sp. nov. (Araceae) in southern China and central Vietnam
FIGURE. Floral habit and structure of C. spongifolia. A. Type specimen in situ with open, spathe limb (apex is reflexed out of view), and green spathe tube (ca. 6 cm long). B. Adjacent plant with inflorescences and prophylls. C. Spadix showing from top: sterile appendix, staminate (male) zone, sterile interstice, and green pistillate (female) zone with tapered, conical form. D. Detail of female zone showing a few basal staminodes. E–G. Berries of the preserved type specimen. G. Dissected berry with orthotropous ovules (some outlined) attached by funicles to parietal placentae (arrows). H. Surface of male zone showing closely-packed synandria. I. Synandria separated to show fused anther sacs beneath apical pores (example in center has 8 pores, 8 anthers) J. Mature fruiting head, with single berry removed to show seed packing and 67 seeds extracted (scale bar units: 1 mm) (Bach Ma NP; type 2020; fruit and seeds 2018). Photos: NVD and PJM.
Data from: A Z-linked sterility locus causes sexual abstinence in hybrid females and facilitates speciation in Spodoptera frugiperda
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Comparison of Results of Different Surgical Techniques Used in Female Tubal Sterilization
ClinicalTrials.gov study NCT04332120. IPD Sharing: UNDECIDED. Countries: 0. Publications: 4.
Study of Excretion Balance and Pharmacokinetics of [14C]-Sodium Valproate (3.7 MBq) in Healthy Postmenopausal or Permanently Sterile Female Subjects
ClinicalTrials.gov study NCT03681158. IPD Sharing: YES. Countries: 1. Publications: 0.
Anatomy and transcript profiling of gynoecium development in female sterile Brassica napus mediated by one alien chromosome
GEO Series GSE49606. Brassica napus. 2 samples. Type: Expression profiling by high throughput sequencing.
Molecular insights into female hybrid sterility in interspecific crosses between Drosophila melanogaster and Drosophila simulans (small RNA-Seq)
GEO Series GSE263983. Drosophila melanogaster; Drosophila melanogaster x Drosophila simulans; Drosophila simulans. 6 samples. Type: Non-coding RNA profiling by high throughput sequencing.
Molecular insights into female hybrid sterility in interspecific crosses between Drosophila melanogaster and Drosophila simulans (RNA-Seq)
GEO Series GSE263982. Drosophila melanogaster; Drosophila melanogaster x Drosophila simulans; Drosophila simulans. 6 samples. Type: Expression profiling by high throughput sequencing.
Identification of genes associated with pistil development by transcriptome analysis of a female sterility mutant (fsm) in Chinese cabbage (Brassica campestris ssp. pekinensis)
GEO Series GSE76917. Brassica rapa subsp. pekinensis. 6 samples. Type: Expression profiling by high throughput sequencing.
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Allen Brain Atlas
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