Název: Evoluce karyotypu u pavouků čeledí Atypidae a Pholcidae
Překlad názvu: Evolution of the karyotype in two spider families, Atypidae and Pholcidae
Autoři: Pastuchová, Markéta ; Kočárek, Eduard (oponent) ; Král, Jiří (vedoucí práce)
Typ dokumentu: Diplomové práce
Rok: 2009
Jazyk: cze
Abstrakt: Evolution of the karyotype in two spider families, Atypidae and Pholcidae (Araneae) Summary From cytogenetic point of view spiders are very diversified group, they exhibit great diversity in diploid chromosome number from 7 Ariadna lateralis (Segestriidae) up to 128 Cyclocosmia siamensis (Ctenizidae). Till recently karyotypes of almost all spiders were supposed to consist exclusively of acrocentric chromosomes including X1X20 sex chromosome system. However, this idea is based mostly on research of an advanced clade - entelegyne lineage of araneomorph spiders. Karyotypes of mygalomorph and haplogyne spiders remain nearly unexplored. Presented study is focused on cytogenetics of eight representatives of the family Pholcidae (Araneomorphae, Haplogyne) and Atypus piceus and A. affinis (Mygalomorphae, fam.Atypidae). Karyotypes, course of meiosis and distribution of nucleolar organizer regions (NOR) have been investigated in selected pholcid species and in one representative of the family Sicariidae (Araneomorphae, Haplogyne). Chromosomes of these groups are mostly biarmed (metacentric or submetacentric) and sex chromosome systems are diversified. Furthermore, distribution of constitutive heterochromatin and NOR has been analysed in A. piceus (2n0' = 41,XO) and A. affinis (2n0' = 14,XY). Key words: Atypidae,...

Instituce: Fakulty UK (VŠKP) (web)
Informace o dostupnosti dokumentu: Dostupné v digitálním repozitáři UK.
Původní záznam: http://hdl.handle.net/20.500.11956/26583

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-281671


Záznam je zařazen do těchto sbírek:
Školství > Veřejné vysoké školy > Univerzita Karlova > Fakulty UK (VŠKP)
Vysokoškolské kvalifikační práce > Diplomové práce