Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/200186
Type: Artigo de periódico
Title: Chromosomal Evolution In The South American Riodinidae (lepidoptera: Papilionoidea).
Author: Brown, Keith S
von Schoultz, Barbara
Saura, Anja O
Saura, Anssi
Abstract: We give the haploid chromosome numbers of 173 species or subspecies of Riodinidae as well as of 17 species or subspecies of neotropical Lycaenidae for comparison. The chromosome numbers of riodinids have thus far been very poorly known. We find that their range of variation extends from n = 9 to n = 110 but numbers above n = 31 are rare. While lepidopterans in general have stable chromosome numbers, or variation is limited at most a subfamily or genus, the entire family Riodinidae shows variation within genera, tribes and subfamilies with no single modal number. In particular, a stepwise pattern with chromosome numbers that are about even multiples is seen in several unrelated genera. We propose that this variation is attributable to the small population sizes, fragmented populations with little migration, and the behavior of these butterflies. Small and isolated riodinid populations would allow for inbreeding to take place. Newly arisen chromosomal variants could become fixed and contribute to reproductive isolation and speciation. In contrast to the riodinids, the neotropical Lycaenidae (Theclinae and Polyommatinae) conform to the modal n = 24 that characterizes the family.
Subject: Animals
Chromosomes
Evolution, Molecular
Genetic Variation
Haploidy
Lepidoptera
Phylogeny
South America
Rights: aberto
Identifier DOI: 10.1111/j.1601-5223.2012.02250.x
Address: http://www.ncbi.nlm.nih.gov/pubmed/22967142
Date Issue: 2012
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

Files in This Item:
File SizeFormat 
pmed_22967142.pdf525.53 kBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.