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dc.contributor.author
Taffarel, Alberto
dc.contributor.author
Bidau, Claudio Juan
dc.contributor.author
Marti, Dardo Andrea
dc.date.available
2020-07-20T06:50:56Z
dc.date.issued
2015-01
dc.identifier.citation
Taffarel, Alberto; Bidau, Claudio Juan; Marti, Dardo Andrea; Chromosome fusion polymorphisms in the grasshopper, Dichroplus fuscus (Orthoptera: Acrididae: Melanoplinae): Insights on meiotic effects; Czech Academy of Sciences; European Journal of Entomology (Ceske Budejovice); 112; 1; 1-2015; 11-19
dc.identifier.issn
1210-5759
dc.identifier.uri
http://hdl.handle.net/11336/109609
dc.description.abstract
Robertsonian changes account for many of the changes in the evolution of the orthopteran karyotype; in their origin, a centric fusion is involved between two acro-telocentric chromosomes, forming a single bi-armed chromosome. It is usual for these rearrangements to be associated with profound changes in meiosis, such as modification in frequency and distribution of chiasmata. Dichroplus fuscus is a South American grasshopper with a wide distribution. In this work we analyzed nine populations from Misiones Province, north-eastern Argentina. This species presents a standard karyotype of 2n = 23/24 (♂/♀) with all chromosomes acro-telocentric and an X0/XX chromosomal sex determining mechanism. This standard karyotype has been modified by the occurrence of two Robertsonian fusions involving chromosomes 1/3 and 2/4; values of fusions per individual (fpi) show a significant increase in the presence of karyotypic polymorphisms towards southern populations. In individuals showing chromosomal rearrangements, we observed a clear redistribution of chiasmata towards distal positions; significant differences were noted between Robertsonian homozygotes (Ho) and heterozygotes (Ht) for chromosomes arms L1 and M3, although this was not the case between Ho and Ht for chromosomes L2 and M4. With regard to the orientation of trivalents, values obtained for non-convergent orientation were low.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Czech Academy of Sciences
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ORTHOPTERA
dc.subject
ACRIDIDAE
dc.subject
DICHROPLUS FUSCUS
dc.subject
ROBERTSONIAN FUSION
dc.subject
GRASSHOPPERS
dc.subject
CHIASMATA
dc.subject
TRIVALENTS
dc.subject
CHROMOSOMAL CLINE
dc.subject.classification
Genética y Herencia
dc.subject.classification
Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Chromosome fusion polymorphisms in the grasshopper, Dichroplus fuscus (Orthoptera: Acrididae: Melanoplinae): Insights on meiotic effects
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-06-30T13:50:59Z
dc.identifier.eissn
1802-8829
dc.journal.volume
112
dc.journal.number
1
dc.journal.pagination
11-19
dc.journal.pais
República Checa
dc.journal.ciudad
Ceske Budejovice
dc.description.fil
Fil: Taffarel, Alberto. Provincia de Misiones. Comité de Desarrollo e Innovación Tecnológica. Centro de Desarrollo e Innovación Tecnológica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Biología Subtropical. Instituto de Biología Subtropical - Nodo Posadas | Universidad Nacional de Misiones. Instituto de Biología Subtropical. Instituto de Biología Subtropical - Nodo Posadas; Argentina
dc.description.fil
Fil: Bidau, Claudio Juan. Universidad Nacional de Misiones; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Marti, Dardo Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Biología Subtropical. Instituto de Biología Subtropical - Nodo Posadas | Universidad Nacional de Misiones. Instituto de Biología Subtropical. Instituto de Biología Subtropical - Nodo Posadas; Argentina
dc.journal.title
European Journal of Entomology (Ceske Budejovice)
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.eje.cz/corproof.php?tartkey=eje-000000-0084#.VEX-8xaGeYY
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.14411/eje.2015.010
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