Chromosomal analyses of Salticinae and Lyssomaninae reveal a broad occurrence of the 2n male=28, X(1)X(2)0 karyotype within Salticidae

Chromosomal analyses of Salticinae and Lyssomaninae reveal a broad occurrence of the 2n male=28, X(1)X(2)0 karyotype within Salticidae

Author Araujo, Douglas Google Scholar
Sanches, Mariana Bessa Google Scholar
Goncalves Santana Lima, Juliane da Silva Google Scholar
Juliao do Nascimento, Erica Vanessa Google Scholar
Giroti, Andre Marsola Google Scholar
Brescovit, Antonio Domingos Google Scholar
Cella, Doralice Maria Google Scholar
Schneider, Marielle Cristina Autor UNIFESP Google Scholar
Abstract Brazil possesses the richest fauna of Salticidae in the world, including 560 species

however, no representative of the Brazilian fauna has been cytogenetically analyzed up to now. It has been demonstrated that karyotype data are a useful source for discussions on the phylogeny and chromosome differentiation of some salticid lineages. In this work, the first chromosome study of salticid species from Brazil is presented, with the addition of five genera to the 38 previously investigated worldwide. The analysis of mitotic and/or meiotic cells revealed 2n male = 28, X(1)X(2)0 in Asaracus sp., Coryphasia sp., Chira sp., Frigga quintensis (Tullgren, 1905), and Lyssomanes pauper Mello-Leitao, 1945. This karyotype constitution is the most common for Salticidae, occurring in species of distinct clades. The diploid number 2n female = 28 observed in Hasarius adansoni (Audouin, 1826) is unexpected, differing in one autosomal pair from the karyotype previously registered for males of the same species. The cytogenetic information reported here reinforces the wide occurence of 2n male = 28, X(1)X(2)0 within Salticidae, including species belonging to different clades and biogeographical regions. This karyotype is a shared character of Salticidae + Philodromidae, found exclusively in these families within Dionycha, suggesting its sister relationship already proposed in the literature.
Keywords Jumping spider
meiosis
sex chromosome system
diploid number
chromosome evolution
xmlui.dri2xhtml.METS-1.0.item-coverage College Park
Language English
Sponsor Conselho Nacional de Desenvolvimento Cientifico e Tecnologico, CNPq
Fundacao de Amparo a Pesquisa do Estado de Sao Paulo, FAPESP
Grant number CNPq: 471821/2008-0
CNPq: 303028/2014-9
FAPESP: 2011/21643-1
Date 2016
Published in Journal Of Arachnology. College Park, v. 44, n. 2, p. 148-152, 2016.
ISSN 0161-8202 (Sherpa/Romeo, impact factor)
Publisher Amer Arachnological Soc
Extent 148-152
Origin http://dx.doi.org/10.1636/M15-77
Access rights Open access Open Access
Type Article
Web of Science ID WOS:000380169200003
URI https://repositorio.unifesp.br/handle/11600/57496

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