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Original title:
Evoluce karyotypu u pavouků čeledí Atypidae a Pholcidae
Translated title: Evolution of the karyotype in two spider families, Atypidae and Pholcidae
Authors: Pastuchová, Markéta ; Král, Jiří (advisor) ; Kočárek, Eduard (referee)
Document type: Master’s theses
Year: 2009
Language: cze
Abstract: 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,...
Institution: Charles University Faculties (theses) (web)
Document availability information: Available in the Charles University Digital Repository.
Original record: http://hdl.handle.net/20.500.11956/26583
Permalink: http://www.nusl.cz/ntk/nusl-478590
The record appears in these collections:
Universities and colleges > Public universities > Charles University > Charles University Faculties (theses)
Academic theses (ETDs) > Master’s theses
Translated title: Evolution of the karyotype in two spider families, Atypidae and Pholcidae
Authors: Pastuchová, Markéta ; Král, Jiří (advisor) ; Kočárek, Eduard (referee)
Document type: Master’s theses
Year: 2009
Language: cze
Abstract: 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,...
Institution: Charles University Faculties (theses) (web)
Document availability information: Available in the Charles University Digital Repository.
Original record: http://hdl.handle.net/20.500.11956/26583
Permalink: http://www.nusl.cz/ntk/nusl-478590
The record appears in these collections:
Universities and colleges > Public universities > Charles University > Charles University Faculties (theses)
Academic theses (ETDs) > Master’s theses
Record created 2022-05-08, last modified 2022-05-08