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dc.contributor.author Forneris, Natalia Soledad
dc.contributor.author Otero, Gabriel
dc.contributor.author Pereyra, Ana
dc.contributor.author Repetto, Gustavo
dc.contributor.author Rabossi, Alejandro
dc.contributor.author Quesada Allue, Luis Alberto
dc.contributor.author Basso, Alicia L.
dc.date.available 2016-12-16T21:14:29Z
dc.date.issued 2015-02
dc.identifier.citation Forneris, Natalia Soledad; Otero, Gabriel; Pereyra, Ana; Repetto, Gustavo; Rabossi, Alejandro; et al.; High chromosomal variation in wild horn fly Haematobiairritans (Linnaeus) (Diptera, Muscidae) populations; Zoological Inst; Comparative Cytogenetics; 9; 1; 2-2015; 31-50
dc.identifier.issn 1993-0771
dc.identifier.uri http://hdl.handle.net/11336/9654
dc.description.abstract The horn fly, Haematobiairritans is an obligate haematophagous cosmopolitan insect pest. The first reports of attacks on livestock by Haematobiairritans in Argentina and Uruguay occurred in 1991, and since 1993 it is considered an economically important pest. Knowledge on the genetic characteristics of the horn fly increases our understanding of the phenotypes resistant to insecticides that repeatedly develop in these insects. The karyotype of Haematobiairritans, as previously described using flies from an inbred colony, shows a chromosome complement of 2n=10 without heterochromosomes (sex chromosomes). In this study, we analyze for the first time the chromosome structure and variation of four wild populations of Haematobiairritans recently established in the Southern Cone of South America, collected in Argentina and Uruguay. In these wild type populations, we confirmed and characterized the previously published "standard" karyotype of 2n=10 without sex chromosomes; however, surprisingly a supernumerary element, called B-chromosome, was found in about half of mitotic preparations. The existence of statistically significant karyotypic diversity was demonstrated through the application of orcein staining, C-banding and H-banding. This study represents the first discovery and characterization of horn fly karyotypes with 2n=11 (2n=10+B). All spermatocytes analyzed showed 5 chromosome bivalents, and therefore, 2n=10 without an extra chromosome. Study of mitotic divisions showed that some chromosomal rearrangements affecting karyotype structure are maintained as polymorphisms, and multiple correspondence analyses demonstrated that genetic variation was not associated with geographic distribution. Because it was never observed during male meiosis, we hypothesize that B-chromosome is preferentially transmitted by females and that it might be related to sex determination.
dc.format application/pdf
dc.language.iso eng
dc.publisher Zoological Inst
dc.rights info:eu-repo/semantics/openAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject KARYOTYPES
dc.subject GENETIC VARIABILITY
dc.subject POPULATION GENETICS
dc.subject C-BANDING
dc.subject.classification Agronomía, reproducción y protección de plantas
dc.subject.classification Agricultura, Silvicultura y Pesca
dc.subject.classification CIENCIAS AGRÍCOLAS
dc.title High chromosomal variation in wild horn fly Haematobiairritans (Linnaeus) (Diptera, Muscidae) populations
dc.type info:eu-repo/semantics/article
dc.type info:ar-repo/semantics/artículo
dc.type info:eu-repo/semantics/publishedVersion
dc.date.updated 2016-12-16T17:54:46Z
dc.journal.volume 9
dc.journal.number 1
dc.journal.pagination 31-50
dc.journal.pais Rusia
dc.journal.ciudad Sofia
dc.description.fil Fil: Forneris, Natalia Soledad. Universidad de Buenos Aires. Facultad de Agronomia; Argentina
dc.description.fil Fil: Otero, Gabriel. Universidad de Buenos Aires. Facultad de Agronomia; Argentina
dc.description.fil Fil: Pereyra, Ana. Universidad de Buenos Aires. Facultad de Agronomia; Argentina
dc.description.fil Fil: Repetto, Gustavo. Universidad de Buenos Aires. Facultad de Agronomia; Argentina
dc.description.fil Fil: Rabossi, Alejandro. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Biológica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Bioquimicas de Buenos Aires; Argentina. Fundación Instituto Leloir; Argentina
dc.description.fil Fil: Quesada Allue, Luis Alberto. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Biológica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Bioquimicas de Buenos Aires; Argentina. Fundación Instituto Leloir; Argentina
dc.description.fil Fil: Basso, Alicia L.. Universidad de Buenos Aires. Facultad de Agronomia; Argentina
dc.journal.title Comparative Cytogenetics
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/url/http://compcytogen.pensoft.net/articles.php?id=4686
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.3897/CompCytogen.v9i1.8535


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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)