2013
DOI: 10.1111/bij.12056
|View full text |Cite
|
Sign up to set email alerts
|

Evolution of karyotype, sex chromosomes, and meiosis in mygalomorph spiders (Araneae: Mygalomorphae)

Abstract: Spider diversity is partitioned into three primary clades, namely Mesothelae, Mygalomorphae, and Araneomorphae. Mygalomorph cytogenetics is largely unknown. Our study revealed a remarkable karyotype diversity of mygalomorphs. Unlike araneomorphs, they show no general trend towards a decrease of 2n, as the chromosome number was reduced in some lineages and increased in others. A biarmed karyotype is a symplesiomorphy of mygalomorphs and araneomorphs. Male meiosis of some mygalomorphs is achiasmatic, or includes… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
3
2

Citation Types

6
74
0

Year Published

2015
2015
2022
2022

Publication Types

Select...
9
1

Relationship

2
8

Authors

Journals

citations
Cited by 44 publications
(80 citation statements)
references
References 23 publications
6
74
0
Order By: Relevance
“…By contrast, a neo‐X 1 X 2 X 3 X 4 X 5 Y system in the spider Malthonica ferruginea probably evolved from an ancestral X 1 X 2 X 3 0 system, which included an additional pair of homomorphic proto‐sex chromosomes, by Robertsonian fusion between the proto‐Y chromosome and an autosome (Král, ). Moreover, some mygalomorph spiders exhibit up to 13 X chromosomes in males; the X‐multiples originated as a result of different chromosomal rearrangements, including duplications, fissions, and X–X and X–autosome fusions (Král et al ., ). The evolutionary significance of these types of complex multiple sex chromosome systems, including those recently described in three Leptidea butterfly species (Šíchová et al ., ), is poorly understood and deserves our full attention.…”
Section: Introductionmentioning
confidence: 97%
“…By contrast, a neo‐X 1 X 2 X 3 X 4 X 5 Y system in the spider Malthonica ferruginea probably evolved from an ancestral X 1 X 2 X 3 0 system, which included an additional pair of homomorphic proto‐sex chromosomes, by Robertsonian fusion between the proto‐Y chromosome and an autosome (Král, ). Moreover, some mygalomorph spiders exhibit up to 13 X chromosomes in males; the X‐multiples originated as a result of different chromosomal rearrangements, including duplications, fissions, and X–X and X–autosome fusions (Král et al ., ). The evolutionary significance of these types of complex multiple sex chromosome systems, including those recently described in three Leptidea butterfly species (Šíchová et al ., ), is poorly understood and deserves our full attention.…”
Section: Introductionmentioning
confidence: 97%
“…However, molecular cytogenetic studies are scarce in spiders. There have been only five studies about distribution of some sequences using fluorescence in situ hybridization (FISH): location of 18S rDNA sites in Wadicosa fidelis (O. Pickard-Cambridge, 1872) (Lycosidae) (Forman et al 2013) and Brachypelma albopilosum Valerio, 1980 (Theraphosidae) (Král et al 2013); 5S rDNA sites in Oxyopes sertatus L. Koch, 1878 (Oxyopidae) (Suzuki and Kubota 2011); mapping of silk genes in Latrodectus hesperus Chamberlin & Ivie, 1935 and Latrodectus geometricus C. L. Koch, 1841 (Theridiidae) (Zhao et al 2010); and ocurrence of telomeric repeats in Brachypelma albopilosa Valerio, 1980 (Vítková et al 2005). …”
Section: Introductionmentioning
confidence: 99%
“…Rhampsinitus has a terminal position of 18S rDNA clusters, similarly to basal harvestmen of the suborder Cyphophthalmi (Svojanovská et al 2016), and other arachnid groups such as spiders (e.g. Král et al 2013), amblypygids (Paula-Neto et al 2013), and South American scorpions (e.g. Mattos et al 2014).…”
Section: Discussionmentioning
confidence: 99%