Karyotype study on pseudoscorpions of the genus <i>Lasiochernes</i> Beier (Pseudoscorpiones, Chernetidae)

Šťáhlavský, František; Henderickx, Hans; Král, Jaroslav

doi:10.3409/1734916054663375

Cited by 11 publications

(10 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Chromosome X consistently exhibited a metacentric morphology being the largest or one of the largest elements of the set. The X0 system exhibits the same X chromosome morphology previously found in most pseudoscorpions studied so far [Šťáhlavský and Král, 2004;Šťáhlavský et al, 2005, 2006. Therefore, it is likely to be ancestral for this order [Šťáhlavský and Král, 2004].…”

Section: Discussionsupporting

confidence: 49%

See 1 more Smart Citation

The First Cytogenetic Characterization of Atemnids: Pseudoscorpions with the Highest Chromosome Numbers (Arachnida: Pseudoscorpiones)

Šťáhlavský

Král

Harvey

et al. 2012

Cytogenet Genome Res

View full text Add to dashboard Cite

The karyotypes of pseudoscorpions of the family Atemnidae (Arachnida: Pseudoscorpiones) were studied for the first time. Karyotype data for 7 species have been obtained. The diploid chromosome numbers of most species considerably exceed the numbers reported in pseudoscorpions so far, with males ranging between 65 and 143. In spite of this, the sex chromosome system of atemnids is characterized by the same features that are found in the majority of other pseudoscorpions with an X0 system; the X chromosome is metacentric and is the largest chromosome or one of the largest chromosomes of the karyotype. Male meiotic cells of Atemnus politus contain 1 or 2 autosome multivalents; most specimens had 2 multivalents. The multivalents were composed of 4, 6, 8 or 10 chromosomes. Multivalent number and structure was consistent within each of the studied individuals. The same number of chromosomes in all of the males examined suggests that multivalents are generated by reciprocal translocations. The high diversity of multivalents suggests considerable range of translocation heterozygosity in the studied population.

show abstract

Section: Discussionsupporting

confidence: 49%

“…Similar to the other pseudoscorpion groups studied so far [e.g. Troiano, 1990;Šťáhlavský and Král, 2004;Šťáhlavský et al, 2005, 2006, atemnids also express considerable karyotype variability that is potentially useful for cytotaxonomy [e.g. Šťáhlavský and Král, 2004;Zaragoza and Šťáhlavský, 2008].…”

Section: Discussionmentioning

confidence: 87%

The First Cytogenetic Characterization of Atemnids: Pseudoscorpions with the Highest Chromosome Numbers (Arachnida: Pseudoscorpiones)

Šťáhlavský

Král

Harvey

et al. 2012

Cytogenet Genome Res

View full text Add to dashboard Cite

show abstract

“…Atemnidae, Chthoniidae, Chernetidae, Geogarypidae and Olpiidae (e.g. Šťáhlavský & Král, 2004;Šťáhlavský et al, 2005, 2006, 2012. In addition, our analysis detected some similar features in the diploid number and morphology of the chromosomes of R. alpinus, R. lubricus and R. transsilvanicus.…”

Section: Discussionsupporting

confidence: 63%

A karyological study of four European species of Roncus (Pseudoscorpiones: Neobisiidae)

Šťáhlavský¹,

Christophoryová²,

Henderickx³

2013

Eur. J. Entomol.

Self Cite

View full text Add to dashboard Cite

Abstract. We present the results of the first study on the karyotypes of four European species of Roncus: Roncus alpinus L. Koch, 1873, Roncus lubricus L. Koch, 1873, Roncus transsilvanicus Beier, 1928 and Roncus sp. The diploid number was 2n = 23 in Roncus sp., 2n = 43 in R. alpinus and R. transsilvanicus and 2n = 45 in R. lubricus. Telocentric autosomes predominate in species with a high chromosome number and metacentric autosomes in Roncus sp. We assume that the ancestral situation for this genus is a high number of chromosomes. A low number of chromosomes is very likely a consequence of centric fusions, which have possibly played a very important role in karyotype evolution in the genus Roncus. All the species analyzed have the X0 sex chromosome system. The X chromosome is metacentric and is the smallest element in the karyotypes of all the species analyzed.

show abstract

“…The families Geogarypidae and Olpiidae are typically characterised by low numbers of chromosomes. Based on results previously obtained in pseudoscorpions (Troiano, 1990(Troiano, , 1997Š áhlavský, 2000;Š áhlavský et al, 2005), we consider the low chromosome numbers in these families to be a result of considerable reduction. In males of the genus Geogarypus (Geogarypidae), the diploid number of chromosomes ranged from 15 to 23.…”

Section: Discussionmentioning

confidence: 95%

A karyotype study on the pseudoscorpion families Geogarypidae, Garypinidae and Olpiidae (Arachnida: Pseudoscorpiones)

Šťáhlavský¹,

Král²,

Harvey³

et al. 2006

Eur. J. Entomol.

Self Cite

View full text Add to dashboard Cite

Abstract. The karyotypes of pseudoscorpions of three families, Geogarypidae, Garypinidae and Olpiidae (Arachnida: Pseudoscorpiones), were studied for the first time. Three species of the genus Geogarypus from the family Geogarypidae and 10 species belonging to 8 genera from the family Olpiidae were studied. In the genus Geogarypus the diploid chromosome numbers of males range from 15 to 23. In the family Olpiidae the male chromosome numbers vary greatly, from 7 to 23. The male karyotype of single studied member of the family Garypinidae, Garypinus dimidiatus, is composed of 33 chromosomes. It is proposed that the karyotype evolution of the families Geogarypidae and Olpiidae was characterised by a substantial decrease of chromosome numbers. The diploid numbers of some olpiids are the lowest known 2n within pseudoscorpions and even one of the lowest within the class Arachnida. In spite of a considerable reduction of diploid numbers, all species studied possess a X0 sex chromosome system that is widespread and probably ancestral in pseudoscorpions. Moreover, X chromosomes retain conservative metacentric morphology in the majority of species. During the first meiotic division of males, a high number of chiasmata were observed in some species, up to five per bivalent in Indolpium sp. The transient stage between pachytene and diplotene is typically characterised by extensive decondensation of chromatin in males of geogarypids and in Calocheiridius libanoticus, and we interpret this as a diffuse stage. This is recorded in pseudoscorpions for the first time. The relationships between some species belonging to the family Olpiidae are discussed based on the data obtained.

show abstract

Karyotype study on pseudoscorpions of the genus Lasiochernes Beier (Pseudoscorpiones, Chernetidae)

Cited by 11 publications

References 6 publications

The First Cytogenetic Characterization of Atemnids: Pseudoscorpions with the Highest Chromosome Numbers (Arachnida: Pseudoscorpiones)

The First Cytogenetic Characterization of Atemnids: Pseudoscorpions with the Highest Chromosome Numbers (Arachnida: Pseudoscorpiones)

A karyological study of four European species of Roncus (Pseudoscorpiones: Neobisiidae)

A karyotype study on the pseudoscorpion families Geogarypidae, Garypinidae and Olpiidae (Arachnida: Pseudoscorpiones)

Contact Info

Product

Resources

About