---
_id: '3609'
abstract:
- lang: eng
text: Bombina bombina and B. variegata are two anciently diverged toad taxa that
have adapted to different breeding habitats yet hybridize freely in zones of overlap
where their parapatric distributions meet. Here, we report on a joint genetic
and ecological analysis of a hybrid zone in the vicinity of Stryi in western Ukraine.
We used five unlinked allozyme loci, two nuclear single nucleotide polymorphisms
and a mitochondrial DNA haplotype as genetic markers. Parallel allele frequency
clines with a sharp central step occur across a sharp ecotone, where transitions
in aquatic habitat, elevation, and terrestrial vegetation coincide. The width
of the hybrid zone, estimated as the inverse of the maximum gradient in allele
frequency, is 2.3 km. This is the smallest of four estimates derived from different
clinal transects across Europe. We argue that the narrow cline near Stryi is mainly
due to a combination of habitat distribution and habitat preference. Adult toads
show a preference for either ponds (B. bombina) or puddles (B. variegata), which
is known to affect the distribution of genotypes within the hybrid zones. At Stryi,
it should cause a reduction of the dispersal rate across the ecotone and thus
narrow the cline. A detailed comparison of all five intensively studied Bombina
transects lends support to the hypothesis that habitat distribution plus habitat
preference can jointly affect the structure of hybrid zones and, ultimately, the
resulting barriers to gene flow between differentiated gene pools. This study
also represents a resampling of an area that was last studied more than 70 years
ago. Our allele-frequency clines largely coincide with those that were described
then on the basis of morphological variation. However, we found asymmetrical introgression
of B. variegata genes into B. bombina territory along the bank of a river.
author:
- first_name: Alexey
full_name: Yanchukov, Alexey
last_name: Yanchukov
- first_name: Sebastian
full_name: Hofman, Sebastian
last_name: Hofman
- first_name: Jacek
full_name: Szymura, Jacek M
last_name: Szymura
- first_name: Sergey
full_name: Mezhzherin, Sergey V
last_name: Mezhzherin
- first_name: Sviatoslav
full_name: Morozov-Leonov, Sviatoslav
last_name: Morozov Leonov
- first_name: Nicholas H
full_name: Nicholas Barton
id: 4880FE40-F248-11E8-B48F-1D18A9856A87
last_name: Barton
orcid: 0000-0002-8548-5240
- first_name: Beate
full_name: Nürnberger, Beate
last_name: Nürnberger
citation:
ama: 'Yanchukov A, Hofman S, Szymura J, et al. Hybridization of Bombina bombina
and B. variegata (Anura, Discoglossidae) at a sharp ecotone in western Ukraine:
comparisons across transects and over time. Evolution; International Journal
of Organic Evolution. 2006;60(3):583-600. doi:10.1111/j.0014-3820.2006.tb01139.x'
apa: 'Yanchukov, A., Hofman, S., Szymura, J., Mezhzherin, S., Morozov Leonov, S.,
Barton, N. H., & Nürnberger, B. (2006). Hybridization of Bombina bombina and
B. variegata (Anura, Discoglossidae) at a sharp ecotone in western Ukraine: comparisons
across transects and over time. Evolution; International Journal of Organic
Evolution. Wiley-Blackwell. https://doi.org/10.1111/j.0014-3820.2006.tb01139.x'
chicago: 'Yanchukov, Alexey, Sebastian Hofman, Jacek Szymura, Sergey Mezhzherin,
Sviatoslav Morozov Leonov, Nicholas H Barton, and Beate Nürnberger. “Hybridization
of Bombina Bombina and B. Variegata (Anura, Discoglossidae) at a Sharp Ecotone
in Western Ukraine: Comparisons across Transects and over Time.” Evolution;
International Journal of Organic Evolution. Wiley-Blackwell, 2006. https://doi.org/10.1111/j.0014-3820.2006.tb01139.x.'
ieee: 'A. Yanchukov et al., “Hybridization of Bombina bombina and B. variegata
(Anura, Discoglossidae) at a sharp ecotone in western Ukraine: comparisons across
transects and over time,” Evolution; International Journal of Organic Evolution,
vol. 60, no. 3. Wiley-Blackwell, pp. 583–600, 2006.'
ista: 'Yanchukov A, Hofman S, Szymura J, Mezhzherin S, Morozov Leonov S, Barton
NH, Nürnberger B. 2006. Hybridization of Bombina bombina and B. variegata (Anura,
Discoglossidae) at a sharp ecotone in western Ukraine: comparisons across transects
and over time. Evolution; International Journal of Organic Evolution. 60(3), 583–600.'
mla: 'Yanchukov, Alexey, et al. “Hybridization of Bombina Bombina and B. Variegata
(Anura, Discoglossidae) at a Sharp Ecotone in Western Ukraine: Comparisons across
Transects and over Time.” Evolution; International Journal of Organic Evolution,
vol. 60, no. 3, Wiley-Blackwell, 2006, pp. 583–600, doi:10.1111/j.0014-3820.2006.tb01139.x.'
short: A. Yanchukov, S. Hofman, J. Szymura, S. Mezhzherin, S. Morozov Leonov, N.H.
Barton, B. Nürnberger, Evolution; International Journal of Organic Evolution 60
(2006) 583–600.
date_created: 2018-12-11T12:04:13Z
date_published: 2006-03-01T00:00:00Z
date_updated: 2021-01-12T07:44:38Z
day: '01'
doi: 10.1111/j.0014-3820.2006.tb01139.x
extern: 1
intvolume: ' 60'
issue: '3'
month: '03'
page: 583 - 600
publication: Evolution; International Journal of Organic Evolution
publication_status: published
publisher: Wiley-Blackwell
publist_id: '2774'
quality_controlled: 0
status: public
title: 'Hybridization of Bombina bombina and B. variegata (Anura, Discoglossidae)
at a sharp ecotone in western Ukraine: comparisons across transects and over time'
type: journal_article
volume: 60
year: '2006'
...
---
_id: '3608'
abstract:
- lang: eng
text: 'We study the evolution of inversions that capture locally adapted alleles
when two populations are exchanging migrants or hybridizing. By suppressing recombination
between the loci, a new inversion can spread. Neither drift nor coadaptation between
the alleles (epistasis) is needed, so this local adaptation mechanism may apply
to a broader range of genetic and demographic situations than alternative hypotheses
that have been widely discussed. The mechanism can explain many features observed
in inversion systems. It will drive an inversion to high frequency if there is
no countervailing force, which could explain fixed differences observed between
populations and species. An inversion can be stabilized at an intermediate frequency
if it also happens to capture one or more deleterious recessive mutations, which
could explain polymorphisms that are common in some species. This polymorphism
can cycle in frequency with the changing selective advantage of the locally favored
alleles. The mechanism can establish underdominant inversions that decrease heterokaryotype
fitness by several percent if the cause of fitness loss is structural, while if
the cause is genic there is no limit to the strength of underdominance that can
result. The mechanism is expected to cause loci responsible for adaptive species-specific
differences to map to inversions, as seen in recent QTL studies. We discuss data
that support the hypothesis, review other mechanisms for inversion evolution,
and suggest possible tests. '
author:
- first_name: Mark
full_name: Kirkpatrick, Mark
last_name: Kirkpatrick
- first_name: Nicholas H
full_name: Nicholas Barton
id: 4880FE40-F248-11E8-B48F-1D18A9856A87
last_name: Barton
orcid: 0000-0002-8548-5240
citation:
ama: Kirkpatrick M, Barton NH. Chromosome inversions, local adaptation, and speciation.
Genetics. 2006;173(1):419-434. doi:10.1534/genetics.105.047985
apa: Kirkpatrick, M., & Barton, N. H. (2006). Chromosome inversions, local adaptation,
and speciation. Genetics. Genetics Society of America. https://doi.org/10.1534/genetics.105.047985
chicago: Kirkpatrick, Mark, and Nicholas H Barton. “Chromosome Inversions, Local
Adaptation, and Speciation.” Genetics. Genetics Society of America, 2006.
https://doi.org/10.1534/genetics.105.047985.
ieee: M. Kirkpatrick and N. H. Barton, “Chromosome inversions, local adaptation,
and speciation,” Genetics, vol. 173, no. 1. Genetics Society of America,
pp. 419–434, 2006.
ista: Kirkpatrick M, Barton NH. 2006. Chromosome inversions, local adaptation, and
speciation. Genetics. 173(1), 419–434.
mla: Kirkpatrick, Mark, and Nicholas H. Barton. “Chromosome Inversions, Local Adaptation,
and Speciation.” Genetics, vol. 173, no. 1, Genetics Society of America,
2006, pp. 419–34, doi:10.1534/genetics.105.047985.
short: M. Kirkpatrick, N.H. Barton, Genetics 173 (2006) 419–434.
date_created: 2018-12-11T12:04:13Z
date_published: 2006-05-01T00:00:00Z
date_updated: 2021-01-12T07:44:37Z
day: '01'
doi: 10.1534/genetics.105.047985
extern: 1
intvolume: ' 173'
issue: '1'
month: '05'
page: 419 - 434
publication: Genetics
publication_status: published
publisher: Genetics Society of America
publist_id: '2775'
quality_controlled: 0
status: public
title: Chromosome inversions, local adaptation, and speciation
type: journal_article
volume: 173
year: '2006'
...
---
_id: '3610'
abstract:
- lang: eng
text: For a model of diallelic loci with arbitrary epistasis, Barton and Turelli
[2004. Effects of genetic drift on variance components under a general model of
epistasis. Evolution 58, 2111–2132] gave results for variances among and within
replicate lines obtained by inbreeding without selection. Here, we discuss the
relation between their population genetic methods and classical quantitative genetic
arguments. In particular, we consider the case of no dominance using classical
identity by descent arguments, which generalizes their results from two alleles
to multiple alleles. To clarify the connections between the alternative methods,
we obtain the same results using an intermediate method, which explicitly identifies
the statistical effects of sets of loci. We also discuss the effects of population
bottlenecks on covariances among relatives.
author:
- first_name: William
full_name: Hill, William G
last_name: Hill
- first_name: Nicholas H
full_name: Nicholas Barton
id: 4880FE40-F248-11E8-B48F-1D18A9856A87
last_name: Barton
orcid: 0000-0002-8548-5240
- first_name: Michael
full_name: Turelli, Michael
last_name: Turelli
citation:
ama: Hill W, Barton NH, Turelli M. Prediction of effects of genetic drift on variance
components under a general model of epistasis. Theoretical Population Biology.
2006;70(1):56-62. doi:10.1016/j.tpb.2005.10.001
apa: Hill, W., Barton, N. H., & Turelli, M. (2006). Prediction of effects of
genetic drift on variance components under a general model of epistasis. Theoretical
Population Biology. Academic Press. https://doi.org/10.1016/j.tpb.2005.10.001
chicago: Hill, William, Nicholas H Barton, and Michael Turelli. “Prediction of Effects
of Genetic Drift on Variance Components under a General Model of Epistasis.” Theoretical
Population Biology. Academic Press, 2006. https://doi.org/10.1016/j.tpb.2005.10.001.
ieee: W. Hill, N. H. Barton, and M. Turelli, “Prediction of effects of genetic drift
on variance components under a general model of epistasis,” Theoretical Population
Biology, vol. 70, no. 1. Academic Press, pp. 56–62, 2006.
ista: Hill W, Barton NH, Turelli M. 2006. Prediction of effects of genetic drift
on variance components under a general model of epistasis. Theoretical Population
Biology. 70(1), 56–62.
mla: Hill, William, et al. “Prediction of Effects of Genetic Drift on Variance Components
under a General Model of Epistasis.” Theoretical Population Biology, vol.
70, no. 1, Academic Press, 2006, pp. 56–62, doi:10.1016/j.tpb.2005.10.001.
short: W. Hill, N.H. Barton, M. Turelli, Theoretical Population Biology 70 (2006)
56–62.
date_created: 2018-12-11T12:04:14Z
date_published: 2006-08-01T00:00:00Z
date_updated: 2021-01-12T07:44:39Z
day: '01'
doi: 10.1016/j.tpb.2005.10.001
extern: 1
intvolume: ' 70'
issue: '1'
month: '08'
page: 56 - 62
publication: Theoretical Population Biology
publication_status: published
publisher: Academic Press
publist_id: '2773'
quality_controlled: 0
status: public
title: Prediction of effects of genetic drift on variance components under a general
model of epistasis
type: journal_article
volume: 70
year: '2006'
...
---
_id: '3679'
abstract:
- lang: eng
text: This paper describes a new system for "Finding Satellite Tracks” in astronomical
images based on the modern geometric approach. There is an increasing need of
using methods with solid mathematical and statistical foundation in astronomical
image processing. Where the computational methods are serving in all disciplines
of science, they are becoming popular in the field of astronomy as well. Currently
different computational systems are required to be numerically optimized before
to get applied on astronomical images. So at present there is no single system
which solves the problems of astronomers using computational methods based on
modern approaches. The system "Finding Satellite Tracks” is based on geometric
matching method "Recognition by Adaptive Subdivision of Transformation Space
(RAST)".
alternative_title:
- LNCS
author:
- first_name: Haider
full_name: Ali,Haider
last_name: Ali
- first_name: Christoph
full_name: Christoph Lampert
id: 40C20FD2-F248-11E8-B48F-1D18A9856A87
last_name: Lampert
orcid: 0000-0001-8622-7887
- first_name: Thomas
full_name: Breuel,Thomas M
last_name: Breuel
citation:
ama: 'Ali H, Lampert C, Breuel T. Satellite tracks removal in astronomical images.
In: Vol 4225. Springer; 2006:892-901. doi:10.1007/11892755_92'
apa: 'Ali, H., Lampert, C., & Breuel, T. (2006). Satellite tracks removal in
astronomical images (Vol. 4225, pp. 892–901). Presented at the CIARP: Iberoamerican
Congress in Pattern Recognition, Springer. https://doi.org/10.1007/11892755_92'
chicago: Ali, Haider, Christoph Lampert, and Thomas Breuel. “Satellite Tracks Removal
in Astronomical Images,” 4225:892–901. Springer, 2006. https://doi.org/10.1007/11892755_92.
ieee: 'H. Ali, C. Lampert, and T. Breuel, “Satellite tracks removal in astronomical
images,” presented at the CIARP: Iberoamerican Congress in Pattern Recognition,
2006, vol. 4225, pp. 892–901.'
ista: 'Ali H, Lampert C, Breuel T. 2006. Satellite tracks removal in astronomical
images. CIARP: Iberoamerican Congress in Pattern Recognition, LNCS, vol. 4225,
892–901.'
mla: Ali, Haider, et al. Satellite Tracks Removal in Astronomical Images.
Vol. 4225, Springer, 2006, pp. 892–901, doi:10.1007/11892755_92.
short: H. Ali, C. Lampert, T. Breuel, in:, Springer, 2006, pp. 892–901.
conference:
name: 'CIARP: Iberoamerican Congress in Pattern Recognition'
date_created: 2018-12-11T12:04:35Z
date_published: 2006-10-31T00:00:00Z
date_updated: 2021-01-12T07:45:05Z
day: '31'
doi: 10.1007/11892755_92
extern: 1
intvolume: ' 4225'
main_file_link:
- open_access: '0'
url: http://pub.ist.ac.at/~chl/papers/ali-ciarp2006.pdf
month: '10'
page: 892 - 901
publication_status: published
publisher: Springer
publist_id: '2700'
quality_controlled: 0
status: public
title: Satellite tracks removal in astronomical images
type: conference
volume: 4225
year: '2006'
...
---
_id: '3677'
abstract:
- lang: eng
text: We propose a video retrieval framework based on a novel combination of spatiograms
and the Jensen-Shannon divergence, and validate its performance in two quantitative
experiments on TRECVID BBC Rushes data. In the first experiment, color-based methods
are tested by grouping redundant shots in an unsupervised clustering. Results
of the second experiment show that motion-based spatiograms make a promising fast,
compressed-domain descriptor for the detection of interview scenes.
alternative_title:
- TRECVID Notebook Papers and Slides
author:
- first_name: Adrian
full_name: Ulges, Adrian
last_name: Ulges
- first_name: Christoph
full_name: Christoph Lampert
id: 40C20FD2-F248-11E8-B48F-1D18A9856A87
last_name: Lampert
orcid: 0000-0001-8622-7887
- first_name: Daniel
full_name: Keysers,Daniel
last_name: Keysers
citation:
ama: 'Ulges A, Lampert C, Keysers D. Spatiogram-based shot distances for video retrieval.
In: NIST (National Institute of Standards and Technology, US Department of Commerce);
2006:1-10.'
apa: Ulges, A., Lampert, C., & Keysers, D. (2006). Spatiogram-based shot distances
for video retrieval (pp. 1–10). Presented at the TRECVID Workshop, NIST (National
Institute of Standards and Technology, US Department of Commerce).
chicago: Ulges, Adrian, Christoph Lampert, and Daniel Keysers. “Spatiogram-Based
Shot Distances for Video Retrieval,” 1–10. NIST (National Institute of Standards
and Technology, US Department of Commerce), 2006.
ieee: A. Ulges, C. Lampert, and D. Keysers, “Spatiogram-based shot distances for
video retrieval,” presented at the TRECVID Workshop, 2006, pp. 1–10.
ista: Ulges A, Lampert C, Keysers D. 2006. Spatiogram-based shot distances for video
retrieval. TRECVID Workshop, TRECVID Notebook Papers and Slides, , 1–10.
mla: Ulges, Adrian, et al. Spatiogram-Based Shot Distances for Video Retrieval.
NIST (National Institute of Standards and Technology, US Department of Commerce),
2006, pp. 1–10.
short: A. Ulges, C. Lampert, D. Keysers, in:, NIST (National Institute of Standards
and Technology, US Department of Commerce), 2006, pp. 1–10.
conference:
name: TRECVID Workshop
date_created: 2018-12-11T12:04:34Z
date_published: 2006-11-14T00:00:00Z
date_updated: 2021-01-12T07:45:04Z
day: '14'
extern: 1
main_file_link:
- open_access: '0'
url: http://www-nlpir.nist.gov/projects/tvpubs/tv6.papers/dfki.pdf
month: '11'
page: 1 - 10
publication_status: published
publisher: NIST (National Institute of Standards and Technology, US Department of
Commerce)
publist_id: '2702'
quality_controlled: 0
status: public
title: Spatiogram-based shot distances for video retrieval
type: conference
year: '2006'
...