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https://hdl.handle.net/1959.11/22624
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DC Field | Value | Language |
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dc.contributor.author | Gregg, Peter | en |
dc.contributor.author | Webb, G C | en |
dc.contributor.author | Adena, M A | en |
dc.date.accessioned | 2018-02-26T16:05:00Z | - |
dc.date.issued | 1984 | - |
dc.identifier.citation | Canadian Journal of Genetics and Cytology, 26(2), p. 194-208 | en |
dc.identifier.issn | 1480-3321 | en |
dc.identifier.issn | 0831-2796 | en |
dc.identifier.issn | 0008-4093 | en |
dc.identifier.uri | https://hdl.handle.net/1959.11/22624 | - |
dc.description.abstract | The B chromosomes of Chortoicetes terminifera possess an accumulation mechanism. B chromosomes were transmitted at a rate of 0.766 in one B(♂) × zero B(♀) crosses and 0.477 in zero B(♂) one × B(♀) crosses. In crosses where the female had a B chromosome, there were significant differences in transmission rates between pods, but these were not related to differences in G-banding patterns of the B chromosomes involved. In crosses where either the male or female parent had two B chromosomes the B chromosomes did not segregate perfectly, nor did they segregate in a random fashion. The closest resemblance to the behaviour of normal bivalents occurred when the two B chromosomes were of the same, rather than different, G-banding variants, and when they were present in the male rather than the female parent. B chromosomes occurred at eight localities scattered throughout New South Wales. No locality was found where they were not present. The average frequency of B chromosomes was 14.0% for one-B individuals and 0.8% for two-B individuals. There were no significant differences in B-chromosome frequency between males and females. Of the eight localities, only one had a B-chromosome frequency significantly different from any other locality. This relatively uniformity of B-chromosome distribution is interpreted as a consequence of the migratory nature of C. terminifera. A model was constructed to simulate the dynamics of B chromosomes in locust populations. Three main dynamic patterns were recognized, and these were related to differences in the fitness of one-B and two-B individuals. It was concluded that the B chromosome of C. terminifera is probably parasitic, although the simulation model revealed some difficulties which suggest that caution should be applied to the description of any B chromosome as purely parasitic.Key words: B chromosomes, locust, meiotic drive, G-banding, fitness. Chortoicetes terminifera (Walker). | en |
dc.language | en | en |
dc.publisher | Canadian Science Publishing | en |
dc.relation.ispartof | Canadian Journal of Genetics and Cytology | en |
dc.title | The dynamics of B chromosomes in populations of the Australian plague locust, 'Chortoicetes terminifera' (Walker) | en |
dc.type | Journal Article | en |
dc.identifier.doi | 10.1139/g84-033 | en |
dc.subject.keywords | Population, Ecological and Evolutionary Genetics | en |
local.contributor.firstname | Peter | en |
local.contributor.firstname | G C | en |
local.contributor.firstname | M A | en |
local.subject.for2008 | 060411 Population, Ecological and Evolutionary Genetics | en |
local.subject.seo2008 | 970106 Expanding Knowledge in the Biological Sciences | en |
local.profile.school | School of Environmental and Rural Science | en |
local.profile.email | pgregg@une.edu.au | en |
local.output.category | C1 | en |
local.record.place | au | en |
local.record.institution | University of New England | en |
local.identifier.epublicationsrecord | une-chute-20171110-145059 | en |
local.publisher.place | Canada | en |
local.format.startpage | 194 | en |
local.format.endpage | 208 | en |
local.peerreviewed | Yes | en |
local.identifier.volume | 26 | en |
local.identifier.issue | 2 | en |
local.contributor.lastname | Gregg | en |
local.contributor.lastname | Webb | en |
local.contributor.lastname | Adena | en |
dc.identifier.staff | une-id:pgregg | en |
local.profile.orcid | 0000-0001-7534-3567 | en |
local.profile.role | author | en |
local.profile.role | author | en |
local.profile.role | author | en |
local.identifier.unepublicationid | une:22810 | en |
local.identifier.handle | https://hdl.handle.net/1959.11/22624 | en |
dc.identifier.academiclevel | Academic | en |
local.title.maintitle | The dynamics of B chromosomes in populations of the Australian plague locust, 'Chortoicetes terminifera' (Walker) | en |
local.output.categorydescription | C1 Refereed Article in a Scholarly Journal | en |
local.search.author | Gregg, Peter | en |
local.search.author | Webb, G C | en |
local.search.author | Adena, M A | en |
local.uneassociation | Unknown | en |
local.year.published | 1984 | en |
Appears in Collections: | Journal Article School of Environmental and Rural Science |
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