B1 was the ancestor B chromosome variant in the western Mediterranean area in the grasshopper Eyprepocnemis plorans.
Cytogenet Genome Res
; 142(1): 54-8, 2014.
Article
em En
| MEDLINE
| ID: mdl-24217371
ABSTRACT
We analyzed the distribution of 2 repetitive DNAs, i.e. ribosomal DNA (rDNA) and a satellite DNA (satDNA), on the B chromosomes found in 17 natural populations of the grasshopper Eyprepocnemis ploransplorans sampled around the western Mediterranean region, including the Iberian Peninsula, Balearic Islands, Sicily, and Tunisia. Based on the amount of these repetitive DNAs, 4 types of B variants were found B1, showing an equal or higher amount of rDNA than satDNA, and 3 other variants, B2, B24 and B5, bearing a higher amount of satDNA than rDNA. The variants B1 and B2 varied in size among populations B1 was about half the size of the X chromosome in Balearic Islands, but two-thirds of the X in Iberian populations at Alicante, Murcia and Albacete provinces. Likewise, B2 was about one-third the size of the X chromosome in populations from the Granada province but half the size of the X in the populations collected at Málaga province. The widespread geographical distribution of the B1 variant makes it the best candidate for being the ancestor B chromosome in the whole western Mediterranean region.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Evolução Biológica
/
Cromossomos de Insetos
/
Gafanhotos
Limite:
Animals
País/Região como assunto:
Europa
Idioma:
En
Revista:
Cytogenet Genome Res
Assunto da revista:
GENETICA
Ano de publicação:
2014
Tipo de documento:
Article
País de afiliação:
Espanha