--- _id: '10899' 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. Differentiation. In: Encyclopedia of Biodiversity. 2nd ed. Elsevier; 2013:508-515. doi:10.1016/b978-0-12-384719-5.00031-9' apa: Barton, N. H. (2013). Differentiation. In Encyclopedia of Biodiversity (2nd ed., pp. 508–515). Elsevier. https://doi.org/10.1016/b978-0-12-384719-5.00031-9 chicago: Barton, Nicholas H. “Differentiation.” In Encyclopedia of Biodiversity, 2nd ed., 508–15. Elsevier, 2013. https://doi.org/10.1016/b978-0-12-384719-5.00031-9. ieee: N. H. Barton, “Differentiation,” in Encyclopedia of Biodiversity, 2nd ed., Elsevier, 2013, pp. 508–515. ista: 'Barton NH. 2013.Differentiation. In: Encyclopedia of Biodiversity. , 508–515.' mla: Barton, Nicholas H. “Differentiation.” Encyclopedia of Biodiversity, 2nd ed., Elsevier, 2013, pp. 508–15, doi:10.1016/b978-0-12-384719-5.00031-9. short: N.H. Barton, in:, Encyclopedia of Biodiversity, 2nd ed., Elsevier, 2013, pp. 508–515. date_created: 2022-03-21T07:46:22Z date_published: 2013-01-01T00:00:00Z date_updated: 2022-06-20T09:18:06Z day: '01' department: - _id: NiBa doi: 10.1016/b978-0-12-384719-5.00031-9 edition: '2' keyword: - Adaptive landscape - Cline - Coalescent process - Gene flow - Hybrid zone - Local adaptation - Natural selection - Neutral theory - Population structure - Speciation language: - iso: eng month: '01' oa_version: None page: 508-515 publication: Encyclopedia of Biodiversity publication_identifier: isbn: - 978-0-12-384720-1 publication_status: published publisher: Elsevier quality_controlled: '1' scopus_import: '1' status: public title: Differentiation type: book_chapter user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 year: '2013' ... --- _id: '3666' abstract: - lang: eng text: We have made an extensive allozyme survey of 21 enzyme and protein loci in populations of the alpine grasshopper Podisma pedestris. This species occurs in two races, differing by a chromosomal fusion which separates the ancestral XO/XX race from a derived neo-XY race. These races also differ in DNA content, and hybrids between them have reduced viability. Electrophoresis reveals that the amount of genetic differentiation between these races is no greater than the variation among populations within each race. Both larger-scale surveys and a detailed survey of an area where the races hybridize, show that the chromosomal change is not correlated with gene frequency changes at any of the 21 loci studied. These findings are consistent with recently developed theory concerning the strength of the barrier to gene flow posed by a hybrid zone with characteristics such as those measured experimentally in Podisma. It is argued that hybrid zones in other species which involve allozymic differences do so because of stronger selection against hybrids rather than through mating isolation. article_processing_charge: No article_type: original author: - first_name: Bruce full_name: Halliday, Bruce last_name: Halliday - 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: Halliday B, Barton NH, Hewitt G. Electrophoretic analysis of a chromosomal hybrid zone in the grasshopper Podisma pedestris. Biological Journal of the Linnean Society. 1983;19(1):51-62. doi:10.1111/j.1095-8312.1983.tb00776.x apa: Halliday, B., Barton, N. H., & Hewitt, G. (1983). Electrophoretic analysis of a chromosomal hybrid zone in the grasshopper Podisma pedestris. Biological Journal of the Linnean Society. Oxford University Press. https://doi.org/10.1111/j.1095-8312.1983.tb00776.x chicago: Halliday, Bruce, Nicholas H Barton, and Godfrey Hewitt. “Electrophoretic Analysis of a Chromosomal Hybrid Zone in the Grasshopper Podisma Pedestris.” Biological Journal of the Linnean Society. Oxford University Press, 1983. https://doi.org/10.1111/j.1095-8312.1983.tb00776.x. ieee: B. Halliday, N. H. Barton, and G. Hewitt, “Electrophoretic analysis of a chromosomal hybrid zone in the grasshopper Podisma pedestris,” Biological Journal of the Linnean Society, vol. 19, no. 1. Oxford University Press, pp. 51–62, 1983. ista: Halliday B, Barton NH, Hewitt G. 1983. Electrophoretic analysis of a chromosomal hybrid zone in the grasshopper Podisma pedestris. Biological Journal of the Linnean Society. 19(1), 51–62. mla: Halliday, Bruce, et al. “Electrophoretic Analysis of a Chromosomal Hybrid Zone in the Grasshopper Podisma Pedestris.” Biological Journal of the Linnean Society, vol. 19, no. 1, Oxford University Press, 1983, pp. 51–62, doi:10.1111/j.1095-8312.1983.tb00776.x. short: B. Halliday, N.H. Barton, G. Hewitt, Biological Journal of the Linnean Society 19 (1983) 51–62. date_created: 2018-12-11T12:04:31Z date_published: 1983-02-01T00:00:00Z date_updated: 2022-01-25T14:52:15Z day: '01' doi: 10.1111/j.1095-8312.1983.tb00776.x extern: '1' intvolume: ' 19' issue: '1' keyword: - Hybrid zone - Electrophoresis - Podisma pedestris - Polymorphism language: - iso: eng main_file_link: - url: https://academic.oup.com/biolinnean/article-abstract/19/1/51/2666256?redirectedFrom=fulltext month: '02' oa_version: None page: 51 - 62 publication: Biological Journal of the Linnean Society publication_identifier: eissn: - 1095-8312 issn: - 0024-4066 publication_status: published publisher: Oxford University Press publist_id: '2717' quality_controlled: '1' scopus_import: '1' status: public title: Electrophoretic analysis of a chromosomal hybrid zone in the grasshopper Podisma pedestris type: journal_article user_id: ea97e931-d5af-11eb-85d4-e6957dddbf17 volume: 19 year: '1983' ...