---
_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'
...