@article {15866, title = {A single, recent origin of the accessory B chromosome of the grasshopper Eyprepocnemis plorans}, journal = {GeneticsGenetics}, volume = {187}, number = {3}, year = {2011}, note = {Export Date: 8 November 2011Source: Scopus}, pages = {853-863}, author = {Mu{\~n}oz-Pajares, A. J. and Mart{\'\i}nez-Rodr{\'\i}guez, L. and Teruel, M. and Cabrero, J. and Camacho, J. P. M. and Perfectti, F.} } @article {8837, title = {Differences in ribosomal DNA distribution on A and B chromosomes between eastern and western populations of the grasshopper Eyprepocnemis plorans plorans}, journal = {Cytogenetic and Genome ResearchCytogenetic and Genome Research}, volume = {121}, number = {3-4}, year = {2008}, month = {2008}, pages = {260-265}, isbn = {1424-8581}, author = {Lopez-Leon, M. D. and Cabrero, J. and Dzyubenko, V. V. and Bugrov, A. G. and Karamysheva, T. V. and Rubtsov, N. B. and Camacho, J. P. M.} } @article {8838, title = {Differences in ribosomal DNA distribution on A and B chromosomes between eastern and western populations of the grasshopper Eyprepocnemis plorans plorans}, journal = {Cytogenetic and Genome ResearchCytogenetic and Genome Research}, volume = {121}, number = {3-4}, year = {2008}, month = {2008}, pages = {260-265}, abstract = {Distribution of ribosomal DNA (rDNA) on standard (A) and supernumerary (B) chromosomes of the grasshopper Eyprepocnemis plorans was analysed in specimens collected in Turkey and Armenia, belonging to the E. p. plorans subspecies, and in South Africa, belonging to the E. p. meridionalis subspecies. The latter individuals showed rDNA loci in chromosomes 9 and 11 only, whereas those from Armenia carried it in chromosomes 9 and 11 or else in chromosomes 9-11, depending on the population. The specimens from Turkey carried it in chromosomes 1, 9-11 and X. A comparison of this pattern with those previously observed in populations from Spain, Morocco, and Greece (belonging to E. p. plorans) suggests the existence of two evolutionary patterns in rDNA chromosome location in A chromosomes of this subspecies: eastern populations showing rDNA restricted to the small (9-11) chromosomes (as in E. p. meridionalis and other closely related taxa within the Eyprepocneminae subfamily) and western populations carrying rDNA in most A chromosomes (Spain) or all of them (Morocco). The intermediate pattern discerned in geographically intermediate populations (in Greece and Turkey), with rDNA also being located on the X chromosome, suggests a possible east-west cline. Additional support for east-west differentiation in the rDNA location pattern comes from the analysis of B chromosomes. In eastern populations, including Daghestan, Armenia, Turkey, and Greece, B chromosomes are composed mostly of rDNA, whereas in western populations (Spain and Morocco) they contain roughly similar amounts of rDNA and a 180-bp tandem repeat (satDNA), the latter being scarce in eastern Bs.}, isbn = {1424-8581}, author = {Lopez-Leon, M. D. and Cabrero, J. and Dzyubenko, V. V. and Bugrov, A. G. and Karamysheva, T. V. and Rubtsov, N. B. and Camacho, J. P. M.} } @article {2530, title = {Physical mapping of rDNA and satDNA in A and B chromosomes of the grasshopper Eyprepocnemis plorans from a Greek population}, journal = {Cytogenetic and Genome Research}, volume = {119}, number = {1-2}, year = {2007}, note = {ISI Document Delivery No.: 245BOTimes Cited: 4Cited Reference Count: 27}, pages = {143-146}, type = {Article}, abstract = {

Adult males and females of the grasshopper Eyprepocnemis plorans from a Greek population were analysed by C-banding, silver impregnation and double FISH for two DNA probes, i.e. ribosomal DNA (rDNA) and a 180-bp tandem repeat DNA (satDNA). This population shows characteristics of rDNA location in A chromosomes that are intermediate between those previously reported for eastern (Caucasus) and western (Spain and Morocco) populations. The four rDNA clusters revealed by FISH in chromosomes X, 9, 10 and 11 in Greek specimens imply two more than the two observed in chromosomes 9 and 11 in the Caucasus, but less than the 12 observed in all chromosomes in Morocco. Remarkably, the X chromosome bears one of the new rDNA locations in Greece with respect to the Caucasus, but it appears to be inactive, in contrast to X chromosomes in western populations, which are usually active. B chromosomes were very frequent in the Greek population, and three variants differing in size were observed, all of these being largely composed of rDNA, with the exception of a small pericentromeric satDNA cluster. The high B frequency suggests that B chromosomes in this population might behave parasitically, in resemblance to Bs in western populations. Copyright (C) 2007 S. Karger AG, Basel.

}, keywords = {chromosomes, mapping, population, rDNA, satDNA, πληθυσμός, χαρτογράφηση, χρωμοσώματα}, isbn = {1424-8581}, url = {https://www.karger.com/Article/Abstract/109631}, author = {Abdelaziz, M. and Teruel, M. and Chobanov, D. and Camacho, J. P. M. and Cabrero, J.} }