---
res:
  bibo_abstract:
  - The grasshopper Podisma pedestris includes two chromosomal races, which differ
    by a Robertsonian fusion involving the sex chromosome. The two races meet in a
    cline which runs for 100 km across the Alpes Maritimes in south-eastern France.
    An intensive study of the easternmost end of this cline shows that it is about
    800 m wide; the cline is not smooth, containing substantial spikes in chromosome
    frequency which might be due to sampling drift. Though the cline seems narrow,
    it is wide compared with the dispersal rate of the insect; a selective force of
    only 0.5% would be enough to maintain the cline. It is difficult to determine
    the nature of this force, but some evidence comes from the position of the cline,
    and from the presence of coincident clines at other loci. An estimate of the distribution
    of Podisma has been made, and the cline seems to follow, for the most part, a
    region of low population density, suggesting that it is maintained by hybrid unfitness.
    However, in the one region where the cline is relatively free to move, the XY
    race bulges forwards more than would be expected if hybrids are unfit. The observation
    of severe inviability in crosses between the races, though it is not associated
    with the chromosomal difference, also indicates that this cline is the result
    of some sort of genetic incompatibility.@eng
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: Nicholas H
      foaf_name: Barton, Nicholas H
      foaf_surname: Barton
      foaf_workInfoHomepage: http://www.librecat.org/personId=4880FE40-F248-11E8-B48F-1D18A9856A87
    orcid: 0000-0002-8548-5240
  - foaf_Person:
      foaf_givenName: Godfrey
      foaf_name: Hewitt, Godfrey
      foaf_surname: Hewitt
  bibo_doi: ' 10.1111/j.1558-5646.1981.tb04966.x'
  bibo_issue: '5'
  bibo_volume: 35
  dct_date: 1981^xs_gYear
  dct_isPartOf:
  - http://id.crossref.org/issn/0014-3820
  - http://id.crossref.org/issn/1558-5646
  dct_language: eng
  dct_publisher: Wiley-Blackwell@
  dct_title: A chromosomal cline in the grasshopper Podisma pedestris@
  fabio_hasPubmedId: '28581059'
...