---
OA_place: publisher
OA_type: hybrid
_id: '4132'
article_processing_charge: No
article_type: original
author:
- first_name: Herbert
  full_name: Edelsbrunner, Herbert
  id: 3FB178DA-F248-11E8-B48F-1D18A9856A87
  last_name: Edelsbrunner
  orcid: 0000-0002-9823-6833
- first_name: Hermann
  full_name: Maurer, Hermann
  last_name: Maurer
citation:
  ama: Edelsbrunner H, Maurer H. On the intersection of Orthogonal objects. <i>Information
    Processing Letters</i>. 1981;13(4-5):177-181. doi:<a href="https://doi.org/10.1016/0020-0190(81)90053-3">10.1016/0020-0190(81)90053-3</a>
  apa: Edelsbrunner, H., &#38; Maurer, H. (1981). On the intersection of Orthogonal
    objects. <i>Information Processing Letters</i>. Elsevier. <a href="https://doi.org/10.1016/0020-0190(81)90053-3">https://doi.org/10.1016/0020-0190(81)90053-3</a>
  chicago: Edelsbrunner, Herbert, and Hermann Maurer. “On the Intersection of Orthogonal
    Objects.” <i>Information Processing Letters</i>. Elsevier, 1981. <a href="https://doi.org/10.1016/0020-0190(81)90053-3">https://doi.org/10.1016/0020-0190(81)90053-3</a>.
  ieee: H. Edelsbrunner and H. Maurer, “On the intersection of Orthogonal objects,”
    <i>Information Processing Letters</i>, vol. 13, no. 4–5. Elsevier, pp. 177–181,
    1981.
  ista: Edelsbrunner H, Maurer H. 1981. On the intersection of Orthogonal objects.
    Information Processing Letters. 13(4–5), 177–181.
  mla: Edelsbrunner, Herbert, and Hermann Maurer. “On the Intersection of Orthogonal
    Objects.” <i>Information Processing Letters</i>, vol. 13, no. 4–5, Elsevier, 1981,
    pp. 177–81, doi:<a href="https://doi.org/10.1016/0020-0190(81)90053-3">10.1016/0020-0190(81)90053-3</a>.
  short: H. Edelsbrunner, H. Maurer, Information Processing Letters 13 (1981) 177–181.
date_created: 2018-12-11T12:07:08Z
date_published: 1981-01-01T00:00:00Z
date_updated: 2024-10-30T14:40:02Z
day: '01'
doi: 10.1016/0020-0190(81)90053-3
extern: '1'
intvolume: '        13'
issue: 4-5
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://www.sciencedirect.com/science/article/pii/0020019081900533
month: '01'
oa: 1
oa_version: Published Version
page: 177 - 181
publication: Information Processing Letters
publication_identifier:
  issn:
  - 0020-0190
publication_status: published
publisher: Elsevier
publist_id: '1988'
quality_controlled: '1'
scopus_import: '1'
status: public
title: On the intersection of Orthogonal objects
type: journal_article
user_id: 0043cee0-e5fc-11ee-9736-f83bc23afbf0
volume: 13
year: '1981'
...
---
OA_place: publisher
OA_type: hybrid
_id: '4133'
abstract:
- lang: eng
  text: In 1979 Kirpatrick obtained a practically feasible algorithm for planar regionlocation
    working in linear space and logarithmic time, provided the regions are bounded
    by straight line segments. No algorithm requiring only linear space and log-polynomial
    time was known, so far, for general planar regionlocation, i.e. for the case where
    regions are bounded by curves more complicated than straight line segments. As
    main result of this paper such an algorithm is presented.
article_processing_charge: No
article_type: original
author:
- first_name: Herbert
  full_name: Edelsbrunner, Herbert
  id: 3FB178DA-F248-11E8-B48F-1D18A9856A87
  last_name: Edelsbrunner
  orcid: 0000-0002-9823-6833
- first_name: Hermann
  full_name: Maurer, Hermann
  last_name: Maurer
citation:
  ama: Edelsbrunner H, Maurer H. A space-optimal solution of general region location.
    <i>Theoretical Computer Science</i>. 1981;16(3):329-336. doi:<a href="https://doi.org/10.1016/0304-3975(81)90103-1">10.1016/0304-3975(81)90103-1</a>
  apa: Edelsbrunner, H., &#38; Maurer, H. (1981). A space-optimal solution of general
    region location. <i>Theoretical Computer Science</i>. Elsevier. <a href="https://doi.org/10.1016/0304-3975(81)90103-1">https://doi.org/10.1016/0304-3975(81)90103-1</a>
  chicago: Edelsbrunner, Herbert, and Hermann Maurer. “A Space-Optimal Solution of
    General Region Location.” <i>Theoretical Computer Science</i>. Elsevier, 1981.
    <a href="https://doi.org/10.1016/0304-3975(81)90103-1">https://doi.org/10.1016/0304-3975(81)90103-1</a>.
  ieee: H. Edelsbrunner and H. Maurer, “A space-optimal solution of general region
    location,” <i>Theoretical Computer Science</i>, vol. 16, no. 3. Elsevier, pp.
    329–336, 1981.
  ista: Edelsbrunner H, Maurer H. 1981. A space-optimal solution of general region
    location. Theoretical Computer Science. 16(3), 329–336.
  mla: Edelsbrunner, Herbert, and Hermann Maurer. “A Space-Optimal Solution of General
    Region Location.” <i>Theoretical Computer Science</i>, vol. 16, no. 3, Elsevier,
    1981, pp. 329–36, doi:<a href="https://doi.org/10.1016/0304-3975(81)90103-1">10.1016/0304-3975(81)90103-1</a>.
  short: H. Edelsbrunner, H. Maurer, Theoretical Computer Science 16 (1981) 329–336.
date_created: 2018-12-11T12:07:08Z
date_published: 1981-01-01T00:00:00Z
date_updated: 2024-10-16T14:45:11Z
day: '01'
doi: 10.1016/0304-3975(81)90103-1
extern: '1'
intvolume: '        16'
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://www.sciencedirect.com/science/article/pii/0304397581901031
month: '01'
oa: 1
oa_version: Published Version
page: 329 - 336
publication: Theoretical Computer Science
publication_identifier:
  issn:
  - 0304-3975
publication_status: published
publisher: Elsevier
publist_id: '1989'
quality_controlled: '1'
scopus_import: '1'
status: public
title: A space-optimal solution of general region location
type: journal_article
user_id: 0043cee0-e5fc-11ee-9736-f83bc23afbf0
volume: 16
year: '1981'
...
---
_id: '4332'
article_processing_charge: No
author:
- first_name: Nicholas H
  full_name: Barton, Nicholas H
  id: 4880FE40-F248-11E8-B48F-1D18A9856A87
  last_name: Barton
  orcid: 0000-0002-8548-5240
- first_name: Godfrey
  full_name: Hewitt, Godfrey
  last_name: Hewitt
citation:
  ama: 'Barton NH, Hewitt G. Hybrid zones and speciation. In: Atchley W, Woodruff
    D, eds. <i>Evolution and Speciation</i>. Cambridge University Press; 1981:109-145.'
  apa: Barton, N. H., &#38; Hewitt, G. (1981). Hybrid zones and speciation. In W.
    Atchley &#38; D. Woodruff (Eds.), <i>Evolution and Speciation</i> (pp. 109–145).
    Cambridge University Press.
  chicago: Barton, Nicholas H, and Godfrey Hewitt. “Hybrid Zones and Speciation.”
    In <i>Evolution and Speciation</i>, edited by William Atchley and David Woodruff,
    109–45. Cambridge University Press, 1981.
  ieee: N. H. Barton and G. Hewitt, “Hybrid zones and speciation,” in <i>Evolution
    and Speciation</i>, W. Atchley and D. Woodruff, Eds. Cambridge University Press,
    1981, pp. 109–145.
  ista: 'Barton NH, Hewitt G. 1981.Hybrid zones and speciation. In: Evolution and
    Speciation. , 109–145.'
  mla: Barton, Nicholas H., and Godfrey Hewitt. “Hybrid Zones and Speciation.” <i>Evolution
    and Speciation</i>, edited by William Atchley and David Woodruff, Cambridge University
    Press, 1981, pp. 109–45.
  short: N.H. Barton, G. Hewitt, in:, W. Atchley, D. Woodruff (Eds.), Evolution and
    Speciation, Cambridge University Press, 1981, pp. 109–145.
date_created: 2018-12-11T12:08:18Z
date_published: 1981-05-29T00:00:00Z
date_updated: 2021-12-16T08:24:04Z
day: '29'
editor:
- first_name: William
  full_name: Atchley, William
  last_name: Atchley
- first_name: David
  full_name: Woodruff, David
  last_name: Woodruff
extern: '1'
language:
- iso: eng
month: '05'
oa_version: None
page: 109 - 145
publication: Evolution and Speciation
publication_identifier:
  isbn:
  - 9-780-5212-3823-6
publication_status: published
publisher: Cambridge University Press
publist_id: '1702'
quality_controlled: '1'
related_material:
  link:
  - relation: other
    url: https://agris.fao.org/agris-search/search.do?recordID=US201302583227
status: public
title: Hybrid zones and speciation
type: book_chapter
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '1981'
...
---
_id: '4333'
abstract:
- lang: eng
  text: Samples were taken from five sites in a transect across the hybrid zone between
    two chromosomal races of the grasshopper Podisma pedestris. Crosses were set up
    between insects from the same population, and between populations spanning the
    zone, and the early viability of the offspring was measured. Hybrids between pure
    populations had reduced viability, and the viability of insects from the middle
    of the zone was still lower, showing that most (87 per cent) of the inviability
    was due to the breakup of coadapated gene complexes. Although the total selection
    acting was strong (log. fitness reduced by S25), it was spread over a region wider
    than the dispersal range (350 m vs. 20 m). Hence, the selection on each locus
    contributing towards the inviability is weak (3 per cent). Many (150) independent
    chromosome segments act cumulatively to produce inviability at this stage in the
    life history. The implications of these findings for models of divergence are
    discussed.
article_processing_charge: No
article_type: original
author:
- first_name: Nicholas H
  full_name: Barton, Nicholas H
  id: 4880FE40-F248-11E8-B48F-1D18A9856A87
  last_name: Barton
  orcid: 0000-0002-8548-5240
- first_name: Godfrey
  full_name: Hewitt, Godfrey
  last_name: Hewitt
citation:
  ama: Barton NH, Hewitt G. The genetic basis of hybrid inviability between two chromosomal
    races of the grasshopper Podisma pedestris. <i>Heredity</i>. 1981;47(3):367-383.
    doi:<a href="https://doi.org/10.1038/hdy.1981.98">10.1038/hdy.1981.98</a>
  apa: Barton, N. H., &#38; Hewitt, G. (1981). The genetic basis of hybrid inviability
    between two chromosomal races of the grasshopper Podisma pedestris. <i>Heredity</i>.
    Springer Nature. <a href="https://doi.org/10.1038/hdy.1981.98">https://doi.org/10.1038/hdy.1981.98</a>
  chicago: Barton, Nicholas H, and Godfrey Hewitt. “The Genetic Basis of Hybrid Inviability
    between Two Chromosomal Races of the Grasshopper Podisma Pedestris.” <i>Heredity</i>.
    Springer Nature, 1981. <a href="https://doi.org/10.1038/hdy.1981.98">https://doi.org/10.1038/hdy.1981.98</a>.
  ieee: N. H. Barton and G. Hewitt, “The genetic basis of hybrid inviability between
    two chromosomal races of the grasshopper Podisma pedestris,” <i>Heredity</i>,
    vol. 47, no. 3. Springer Nature, pp. 367–383, 1981.
  ista: Barton NH, Hewitt G. 1981. The genetic basis of hybrid inviability between
    two chromosomal races of the grasshopper Podisma pedestris. Heredity. 47(3), 367–383.
  mla: Barton, Nicholas H., and Godfrey Hewitt. “The Genetic Basis of Hybrid Inviability
    between Two Chromosomal Races of the Grasshopper Podisma Pedestris.” <i>Heredity</i>,
    vol. 47, no. 3, Springer Nature, 1981, pp. 367–83, doi:<a href="https://doi.org/10.1038/hdy.1981.98">10.1038/hdy.1981.98</a>.
  short: N.H. Barton, G. Hewitt, Heredity 47 (1981) 367–383.
date_created: 2018-12-11T12:08:18Z
date_published: 1981-12-01T00:00:00Z
date_updated: 2021-12-16T08:31:08Z
day: '01'
doi: 10.1038/hdy.1981.98
extern: '1'
intvolume: '        47'
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://www.nature.com/articles/hdy198198
month: '12'
oa: 1
oa_version: Published Version
page: 367 - 383
publication: Heredity
publication_identifier:
  eissn:
  - 1365-2540
  issn:
  - 0018-067X
publication_status: published
publisher: Springer Nature
publist_id: '1703'
quality_controlled: '1'
scopus_import: '1'
status: public
title: The genetic basis of hybrid inviability between two chromosomal races of the
  grasshopper Podisma pedestris
type: journal_article
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 47
year: '1981'
...
---
OA_place: publisher
OA_type: hybrid
_id: '3672'
acknowledgement: This work was supported by a grant from the Natural Environment Research
  Council.
article_processing_charge: No
article_type: letter_note
author:
- first_name: Nicholas H
  full_name: Barton, Nicholas H
  id: 4880FE40-F248-11E8-B48F-1D18A9856A87
  last_name: Barton
  orcid: 0000-0002-8548-5240
citation:
  ama: Barton NH. The hybrid sink effect. <i>Heredity</i>. 1980;44:277-278. doi:<a
    href="https://doi.org/10.1038/hdy.1980.23">10.1038/hdy.1980.23</a>
  apa: Barton, N. H. (1980). The hybrid sink effect. <i>Heredity</i>. Springer Nature.
    <a href="https://doi.org/10.1038/hdy.1980.23">https://doi.org/10.1038/hdy.1980.23</a>
  chicago: Barton, Nicholas H. “The Hybrid Sink Effect.” <i>Heredity</i>. Springer
    Nature, 1980. <a href="https://doi.org/10.1038/hdy.1980.23">https://doi.org/10.1038/hdy.1980.23</a>.
  ieee: N. H. Barton, “The hybrid sink effect,” <i>Heredity</i>, vol. 44. Springer
    Nature, pp. 277–278, 1980.
  ista: Barton NH. 1980. The hybrid sink effect. Heredity. 44, 277–278.
  mla: Barton, Nicholas H. “The Hybrid Sink Effect.” <i>Heredity</i>, vol. 44, Springer
    Nature, 1980, pp. 277–78, doi:<a href="https://doi.org/10.1038/hdy.1980.23">10.1038/hdy.1980.23</a>.
  short: N.H. Barton, Heredity 44 (1980) 277–278.
date_created: 2018-12-11T12:04:33Z
date_published: 1980-04-01T00:00:00Z
date_updated: 2024-10-16T14:36:57Z
day: '01'
doi: 10.1038/hdy.1980.23
extern: '1'
intvolume: '        44'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://www.nature.com/articles/hdy198023
month: '04'
oa: 1
oa_version: Published Version
page: 277 - 278
publication: Heredity
publication_identifier:
  eissn:
  - 1365-2540
  issn:
  - 0018-067X
publication_status: published
publisher: Springer Nature
publist_id: '2711'
quality_controlled: '1'
scopus_import: '1'
status: public
title: The hybrid sink effect
type: journal_article
user_id: 0043cee0-e5fc-11ee-9736-f83bc23afbf0
volume: 44
year: '1980'
...
---
_id: '4334'
alternative_title:
- Symposia of the Royal Entomological Society
article_processing_charge: No
author:
- first_name: Godfrey
  full_name: Hewitt, Godfrey
  last_name: Hewitt
- first_name: Nicholas H
  full_name: Barton, Nicholas H
  id: 4880FE40-F248-11E8-B48F-1D18A9856A87
  last_name: Barton
  orcid: 0000-0002-8548-5240
citation:
  ama: 'Hewitt G, Barton NH. The structure and maintenance of hybrid zones as exemplified
    by Podisma pedestris. In: Blackman R, Ashburner M, eds. <i>Insect Cytogenetics</i>.
    Vol 10. Wiley-Blackwell; 1980:149-170.'
  apa: Hewitt, G., &#38; Barton, N. H. (1980). The structure and maintenance of hybrid
    zones as exemplified by Podisma pedestris. In R. Blackman &#38; M. Ashburner (Eds.),
    <i>Insect Cytogenetics</i> (Vol. 10, pp. 149–170). Wiley-Blackwell.
  chicago: Hewitt, Godfrey, and Nicholas H Barton. “The Structure and Maintenance
    of Hybrid Zones as Exemplified by Podisma Pedestris.” In <i>Insect Cytogenetics</i>,
    edited by Roger Blackman and Michael Ashburner, 10:149–70. Wiley-Blackwell, 1980.
  ieee: G. Hewitt and N. H. Barton, “The structure and maintenance of hybrid zones
    as exemplified by Podisma pedestris,” in <i>Insect Cytogenetics</i>, vol. 10,
    R. Blackman and M. Ashburner, Eds. Wiley-Blackwell, 1980, pp. 149–170.
  ista: 'Hewitt G, Barton NH. 1980.The structure and maintenance of hybrid zones as
    exemplified by Podisma pedestris. In: Insect Cytogenetics. Symposia of the Royal
    Entomological Society, vol. 10, 149–170.'
  mla: Hewitt, Godfrey, and Nicholas H. Barton. “The Structure and Maintenance of
    Hybrid Zones as Exemplified by Podisma Pedestris.” <i>Insect Cytogenetics</i>,
    edited by Roger Blackman and Michael Ashburner, vol. 10, Wiley-Blackwell, 1980,
    pp. 149–70.
  short: G. Hewitt, N.H. Barton, in:, R. Blackman, M. Ashburner (Eds.), Insect Cytogenetics,
    Wiley-Blackwell, 1980, pp. 149–170.
date_created: 2018-12-11T12:08:19Z
date_published: 1980-01-01T00:00:00Z
date_updated: 2021-12-15T16:09:43Z
day: '01'
editor:
- first_name: Roger
  full_name: Blackman, Roger
  last_name: Blackman
- first_name: Michael
  full_name: Ashburner, Michael
  last_name: Ashburner
extern: '1'
intvolume: '        10'
language:
- iso: eng
month: '01'
oa_version: None
page: 149 - 170
publication: Insect Cytogenetics
publication_identifier:
  isbn:
  - 9-780-6320-0552-9
publication_status: published
publisher: Wiley-Blackwell
publist_id: '1699'
quality_controlled: '1'
status: public
title: The structure and maintenance of hybrid zones as exemplified by Podisma pedestris
type: book_chapter
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 10
year: '1980'
...
---
OA_place: publisher
OA_type: hybrid
_id: '4335'
abstract:
- lang: eng
  text: Genetic incompatibilities between two races of the grasshopper Podisma pedestris,
    which differ by a Robertsonian fusion involving the sex chromosome, have been
    investigated. Crosses were made between four populations spanning the chromosomal
    cline; F1 hybrids between the races, though not between separated populations
    of the same race, showed markedly reduced hatching success. Observations of the
    fate of chromosomes transplanted across the cline supported this finding. Crosses
    between grasshoppers from a mixed population in the cline showed a lower average
    hatching success, but no correlation of this inviability with the chromosomal
    polymorphism. The karyotypes of pre-diapause embryos from both types of cross
    gave no evidence for non-disjunction of the sex chromosome trivalent in heterozygous
    females; an upper limit of 16 per cent can be set on the non-disjunction rate.
    These findings suggest that the karyotypic difference is only a weakly selected
    marker for more fundamental changes in genotype.
acknowledgement: I would like to thank Dr G. M. Hewitt, and M. W. Shaw, for their
  help in collecting these samples, Mrs T. M. East for her help in rearing them, and
  M et Mme Aviotti for their hospitality in France. This work was supported by a N.E.R.C.
  studentship, and by an S.R.C. grant to Dr G. M. Hewitt.
article_processing_charge: No
article_type: original
author:
- first_name: Nicholas H
  full_name: Barton, Nicholas H
  id: 4880FE40-F248-11E8-B48F-1D18A9856A87
  last_name: Barton
  orcid: 0000-0002-8548-5240
citation:
  ama: Barton NH. The fitness of hybrids between two chromosomal races of the grasshopper
    Podisma pedestris. <i>Heredity</i>. 1980;45:47-59. doi:<a href="https://doi.org/10.1038/hdy.1980.49">10.1038/hdy.1980.49</a>
  apa: Barton, N. H. (1980). The fitness of hybrids between two chromosomal races
    of the grasshopper Podisma pedestris. <i>Heredity</i>. Springer Nature. <a href="https://doi.org/10.1038/hdy.1980.49">https://doi.org/10.1038/hdy.1980.49</a>
  chicago: Barton, Nicholas H. “The Fitness of Hybrids between Two Chromosomal Races
    of the Grasshopper Podisma Pedestris.” <i>Heredity</i>. Springer Nature, 1980.
    <a href="https://doi.org/10.1038/hdy.1980.49">https://doi.org/10.1038/hdy.1980.49</a>.
  ieee: N. H. Barton, “The fitness of hybrids between two chromosomal races of the
    grasshopper Podisma pedestris,” <i>Heredity</i>, vol. 45. Springer Nature, pp.
    47–59, 1980.
  ista: Barton NH. 1980. The fitness of hybrids between two chromosomal races of the
    grasshopper Podisma pedestris. Heredity. 45, 47–59.
  mla: Barton, Nicholas H. “The Fitness of Hybrids between Two Chromosomal Races of
    the Grasshopper Podisma Pedestris.” <i>Heredity</i>, vol. 45, Springer Nature,
    1980, pp. 47–59, doi:<a href="https://doi.org/10.1038/hdy.1980.49">10.1038/hdy.1980.49</a>.
  short: N.H. Barton, Heredity 45 (1980) 47–59.
date_created: 2018-12-11T12:08:19Z
date_published: 1980-08-01T00:00:00Z
date_updated: 2024-10-16T14:38:31Z
day: '01'
doi: 10.1038/hdy.1980.49
extern: '1'
intvolume: '        45'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://www.nature.com/articles/hdy198049
month: '08'
oa: 1
oa_version: Published Version
page: 47 - 59
publication: Heredity
publication_identifier:
  eissn:
  - 1365-2540
  issn:
  - 0018-067X
publication_status: published
publisher: Springer Nature
publist_id: '1697'
quality_controlled: '1'
scopus_import: '1'
status: public
title: The fitness of hybrids between two chromosomal races of the grasshopper Podisma
  pedestris
type: journal_article
user_id: 0043cee0-e5fc-11ee-9736-f83bc23afbf0
volume: 45
year: '1980'
...
---
_id: '3673'
abstract:
- lang: eng
  text: The effect of a cline as a barrier to gene flow at closely linked, weakly
    selected loci is investigated using a continuous diffusion model. It is shown
    that a linked cline induces a step in the frequency of a neutral allele, which
    is proportional to the gradient in neutral allele frequency and to the inverse
    of the recombination rate. A barrier to dispersal or a local region of low abundance
    has a similar effect (Nagylaki, 1976). The cline will block the flow of neutral
    alleles over a region of chromosome roughly 2s/t map units long. However, a slightly
    advantageous allele will be little affected, and must be very tightly linked to
    be delayed for long.
acknowledgement: "I would like to thank Dr G. M. Hewitt for stimulating discussions,
  and for his comments on the manuscript. This work was supported by the Natural Environmental
  Research Council.\r\n"
article_processing_charge: No
article_type: original
author:
- first_name: Nicholas H
  full_name: Barton, Nicholas H
  id: 4880FE40-F248-11E8-B48F-1D18A9856A87
  last_name: Barton
  orcid: 0000-0002-8548-5240
citation:
  ama: Barton NH. Gene flow past a cline. <i>Heredity</i>. 1979;43(3):333-339. doi:<a
    href="https://doi.org/10.1038/hdy.1979.86">10.1038/hdy.1979.86</a>
  apa: Barton, N. H. (1979). Gene flow past a cline. <i>Heredity</i>. Springer Nature.
    <a href="https://doi.org/10.1038/hdy.1979.86">https://doi.org/10.1038/hdy.1979.86</a>
  chicago: Barton, Nicholas H. “Gene Flow Past a Cline.” <i>Heredity</i>. Springer
    Nature, 1979. <a href="https://doi.org/10.1038/hdy.1979.86">https://doi.org/10.1038/hdy.1979.86</a>.
  ieee: N. H. Barton, “Gene flow past a cline,” <i>Heredity</i>, vol. 43, no. 3. Springer
    Nature, pp. 333–339, 1979.
  ista: Barton NH. 1979. Gene flow past a cline. Heredity. 43(3), 333–339.
  mla: Barton, Nicholas H. “Gene Flow Past a Cline.” <i>Heredity</i>, vol. 43, no.
    3, Springer Nature, 1979, pp. 333–39, doi:<a href="https://doi.org/10.1038/hdy.1979.86">10.1038/hdy.1979.86</a>.
  short: N.H. Barton, Heredity 43 (1979) 333–339.
date_created: 2018-12-11T12:04:33Z
date_published: 1979-12-01T00:00:00Z
date_updated: 2021-12-15T15:16:50Z
day: '01'
doi: 10.1038/hdy.1979.86
extern: '1'
intvolume: '        43'
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://www.nature.com/articles/hdy197986
month: '12'
oa: 1
oa_version: Published Version
page: 333 - 339
publication: Heredity
publication_identifier:
  eissn:
  - 1365-2540
  issn:
  - 0018-067X
publication_status: published
publisher: Springer Nature
publist_id: '2710'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Gene flow past a cline
type: journal_article
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 43
year: '1979'
...
---
OA_place: publisher
OA_type: hybrid
_id: '4336'
abstract:
- lang: eng
  text: "This paper investigates the dynamic behaviour of hybrid zones which are maintained
    by a balance between dispersal and selection against hybrids. In the first section
    it is shown that a hybrid zone involving a single locus can move in response to
    a selective imbalance between the two homozygotes, and also to variation in population
    density and dispersal rate. It can be trapped by natural barriers, and so an allele
    which is selected against when rare cannot advance, even if it is advantageous
    when common. The continuous model used in deriving these results is shown to be
    a good approximation to the stepping-stone model, provided that the cline contains
    several demes.\r\n\r\nThe effect of stochastic forces on multi-locus hybrid zones
    is then considered. An expression giving the shift in position after an arbitrary
    perturbation in gamete frequency is derived. Using this formula, it is found that
    sampling drift is negligible unless the zone includes few organisms and involves
    few loci. Random variations in population structure are the dominant force, and
    could allow considerable movement in an even environment. However, natural barriers
    can still trap hybrid zones, and so it is likely that they will remain roughly
    where they first formed."
article_processing_charge: No
article_type: original
author:
- first_name: Nicholas H
  full_name: Barton, Nicholas H
  id: 4880FE40-F248-11E8-B48F-1D18A9856A87
  last_name: Barton
  orcid: 0000-0002-8548-5240
citation:
  ama: Barton NH. The dynamics of hybrid zones. <i>Heredity</i>. 1979;43(3):341-359.
    doi:<a href="https://doi.org/10.1038/hdy.1979.87">10.1038/hdy.1979.87</a>
  apa: Barton, N. H. (1979). The dynamics of hybrid zones. <i>Heredity</i>. Springer
    Nature. <a href="https://doi.org/10.1038/hdy.1979.87">https://doi.org/10.1038/hdy.1979.87</a>
  chicago: Barton, Nicholas H. “The Dynamics of Hybrid Zones.” <i>Heredity</i>. Springer
    Nature, 1979. <a href="https://doi.org/10.1038/hdy.1979.87">https://doi.org/10.1038/hdy.1979.87</a>.
  ieee: N. H. Barton, “The dynamics of hybrid zones,” <i>Heredity</i>, vol. 43, no.
    3. Springer Nature, pp. 341–359, 1979.
  ista: Barton NH. 1979. The dynamics of hybrid zones. Heredity. 43(3), 341–359.
  mla: Barton, Nicholas H. “The Dynamics of Hybrid Zones.” <i>Heredity</i>, vol. 43,
    no. 3, Springer Nature, 1979, pp. 341–59, doi:<a href="https://doi.org/10.1038/hdy.1979.87">10.1038/hdy.1979.87</a>.
  short: N.H. Barton, Heredity 43 (1979) 341–359.
date_created: 2018-12-11T12:08:19Z
date_published: 1979-12-01T00:00:00Z
date_updated: 2024-10-16T14:33:08Z
day: '01'
doi: 10.1038/hdy.1979.87
extern: '1'
intvolume: '        43'
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://www.nature.com/articles/hdy197987
month: '12'
oa: 1
oa_version: Published Version
page: 341 - 359
publication: Heredity
publication_identifier:
  eissn:
  - 1365-2540
  issn:
  - 0018-067X
publication_status: published
publisher: Springer Nature
publist_id: '1696'
quality_controlled: '1'
status: public
title: The dynamics of hybrid zones
type: journal_article
user_id: 0043cee0-e5fc-11ee-9736-f83bc23afbf0
volume: 43
year: '1979'
...
---
_id: '4337'
article_processing_charge: No
author:
- first_name: Nicholas H
  full_name: Barton, Nicholas H
  id: 4880FE40-F248-11E8-B48F-1D18A9856A87
  last_name: Barton
  orcid: 0000-0002-8548-5240
citation:
  ama: Barton NH. A hybrid zone in the alpine grasshopper Podisma pedestris. 1979.
  apa: Barton, N. H. (1979). <i>A hybrid zone in the alpine grasshopper Podisma pedestris</i>.
    University of East Anglia.
  chicago: Barton, Nicholas H. “A Hybrid Zone in the Alpine Grasshopper Podisma Pedestris.”
    University of East Anglia, 1979.
  ieee: N. H. Barton, “A hybrid zone in the alpine grasshopper Podisma pedestris,”
    University of East Anglia, 1979.
  ista: Barton NH. 1979. A hybrid zone in the alpine grasshopper Podisma pedestris.
    University of East Anglia.
  mla: Barton, Nicholas H. <i>A Hybrid Zone in the Alpine Grasshopper Podisma Pedestris</i>.
    University of East Anglia, 1979.
  short: N.H. Barton, A Hybrid Zone in the Alpine Grasshopper Podisma Pedestris, University
    of East Anglia, 1979.
date_created: 2018-12-11T12:08:20Z
date_published: 1979-01-01T00:00:00Z
date_updated: 2025-06-26T08:57:22Z
day: '01'
degree_awarded: PhD
extern: '1'
language:
- iso: eng
month: '01'
oa_version: None
publication_status: published
publisher: University of East Anglia
publist_id: '1694'
status: public
title: A hybrid zone in the alpine grasshopper Podisma pedestris
type: dissertation
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '1979'
...
