@mastersthesis {1169, title = {Karyotypov{\'a} variabilita stono{\v z}kovc{\r u} (Myriapoda) / Karyotype variability of Myriapoda}, year = {2020}, month = {13/07/2020}, pages = {38}, school = {Univerzita Karlova, P{\v r}{\'\i}rodov{\v e}deck{\'a} fakulta}, type = {Bachelor thesis}, address = {Prague}, abstract = {

Abstrakt: Bakal\á{\v r}sk\á pr\áce pojedn\áv\á o diploidn\ích po{\v c}tech chromozom{\r u}, jejich morfologii a chromozomov\ém mechanismu ur{\v c}en\í pohlav\í u {\v c}ty{\v r}ech t{\v r}\íd podkmene Myriapoda. Pozornost je z\árove{\v n} v{\v e}nov\ána vz\ájemn\ým fylogenetick\ým vztah{\r u}m v r\ámci podkmene. P{\v r}ehled literatury ukazuje m\íru prozkoumanosti cytogenetick\ých charakteristik u jednotliv\ých t{\v r}\íd, kter\á je zejm\éna ve t{\v r}\íd\ách Pauropoda a Symphyla st\ále velmi n\ízk\á a v r\ámci t{\v r}\ídy Diplopoda je st\ále je\št{\v e} velk\é mno{\v z}stv\í {\v r}\ád{\r u}, kde n\ám tyto informace zcela chyb\í. Cytogenetick\é anal\ýzy odhalily celkov\é rozp{\v e}t\í po{\v c}tu chromozom{\r u} pro: Pauropoda 2n = 12 \– 27, Symphyla 2n = 11 \– 18, Chilopoda 2n = 14 \– 54 a Diplopoda 2n = 8 \– 30. V r\ámci v\šech {\v c}ty{\v r} t{\v r}\íd se vyskytuj\í jak morfologicky nediferencovan\é pohlavn\í chromozomy, tak syst\émy typu XX/XY a XX/X0. Nav\íc je u {\v r}\ádu Spirostreptida uv\ád{\v e}n\ý i syst\ém X1X1X2X2/X1X20. Pouze u mal\ého mno{\v z}stv\í druh{\r u} z {\v r}\ád{\r u} Glomerida, Calipodida, Julida, Spirostreptida a Lithobiomorpha a {\v c}eledi Scutigerellidae se poda{\v r}ilo identifikovat v\ýskyt NOR{\r u}. V pr\áci se tak\é poda{\v r}ilo identifikovat n{\v e}kter\é neshody mezi \údaji r{\r u}zn\ých prac\í, kdy se ukazuje, {\v z}e zejm\éna n{\v e}kter\é star\š\í studie byly postaveny na \špatn\ém pozorov\án\í chromozom{\r u} v karyotypu.

Karyotype variability of Myriapoda

Abstract: The bachelor thesis deals with diploid numbers of chromosomes, their morphology and chromosome mechanism of sex determination in four classes of the subphylum Myriapoda. Attention is also paid to mutual phylogenetic relationships within the subphylum. A review of the literature shows the degree of examination of cytogenetic characteristics in individual classes, which is still very low, especially in the classes Pauropoda and Symphyla, and within the class Diplopoda there are still a large number of orders where we completely lack this information. Cytogenetic analyzes revealed a total range of chromosome numbers for: Pauropoda 2n = 12 - 27, Symphyla 2n = 11 - 18, Chilopoda 2n = 14 - 54 and Diplopoda 2n = 8 - 30. Within all four classes, there are both morphologically undifferentiated sex chromosomes and XX/XY and XX/X0 systems. In addition, the X1X1X2X2/X1X20 system is mentioned for the order Spirostreptida. Only a small number of species from the orders Glomerida, Calipodida, Julida, Spirostreptida, Lithobiomorpha and from family Scutigerellidae were able to identify the occurrence of NORs. The work also managed to identify some discrepancies between the data of different works, which shows that especially some older studies were based on poor observation of chromosomes in the karyotype.

}, keywords = {Chilopoda, chromosomes, chromozomy, Diplopoda, fylogeneze, karyotyp, karyotype, Myriapoda, Pauropoda, phylogeny, Symphyla, variabilita, variability}, url = {https://dspace.cuni.cz/handle/20.500.11956/119725}, author = {K{\'a}{\v s}ov{\'a}, Ad{\'e}la} } @article {438, title = {Checklist of the Myriapoda in Cretaceous Burmese amber and a correction of the Myriapoda identified by Zhang (2017)}, journal = {Check List}, volume = {14}, year = {2018}, month = {12/2020}, pages = {1131-1140}, abstract = {

An inventory of the Myriapoda (Diplopoda, Chilopoda, Symphyla) from Cretaceous Burmese amber, Myanmar, is presented, including the oldest and/or first fossil record for numerous orders. For millipedes (Diplopoda) 527 records, including 460 new specimens determined by us, belonging to 13 of 16 recent orders are listed: Polyxenida, Glomeridesmida, Glomerida, Siphonophorida, Polyzoniida, Platydesmida, Siphoniulida, Chordeumatida, Polydesmida, Stemmiulida, Callipodida, Spirostreptida and Spirobolida. For centipedes, 33 records for 4 of the 5 recent orders are listed: Scutigeromorpha, Lithobiomorpha, Scolopendromorpha and Geophilomorpha. For Symphyla, three records for both families, Scutigerellidae and Scolopendrellidae, are listed. The majority of Diplopoda records (30.5\%) are Polydesmida. The record of the Polyzoniida includes first instar octopod juveniles. The checklist includes the first fossil representatives known of the Platydesmida, as well as the oldest known fossils of the Polyxenida, Glomeridesmida, Glomerida, Siphonophorida, Polyzoniida, Siphoniulida, Spirostreptida, as well as both Symphyla families. Misidentifications by Zhang (2017) are corrected; while most Chilopoda in that list are correct, almost all Diplopoda are misidentified.

}, keywords = {Chilopoda, Cretaceous, Diplopoda, fossil, Myanmar, Symphyla}, doi = {https://doi.org/10.15560/14.6.1131}, url = {https://checklist.pensoft.net/article/30320/}, author = {Wesener, Thomas and Moritz, Leif} } @article {290, title = {Subterranean biodiversity and depth distribution of myriapods in forested scree slopes of Central Europe}, journal = {ZooKeys}, volume = {930}, year = {2020}, month = {28/04/2020}, pages = {117-137}, abstract = {

The shallow underground of rock debris is a unique animal refuge. Nevertheless, the research of this habitat lags far behind the study of caves and soil, due to technical and time-consuming demands. Data on Myriapoda in scree habitat from eleven localities in seven different geomorphological units of the Czech and Slovak Republics were processed. Based on previous studies, as well as knowledge of cave and soil fauna, it was hypothesised that the occurrence of a varied and peculiar fauna would show a pattern of depth distribution with variations due to local specificities. From 2005\–2016 (at least one year on each site), macrofauna was collected via sets of three long-term exposed subterranean traps consisting of 110 cm long perforated tube, with ten cups located in a gradient at 5\–95 cm below the soil surface. In total, 14 symphylans (not identified to species level), 271 centipedes (23 spp.) and 572 millipedes (32 spp.) were sampled. The overall depth distribution of centipedes and millipedes appeared to have relatively similar pattern, with both groups being found at all depth levels. Nevertheless, this pattern depends on locations. The depth distribution trend lines are mostly in the form of an asymmetric \‘U\’, with decreased abundance until the middle of the gradient, followed by increase in the deepest levels. Epigeic species were sporadically distributed along the whole depth gradient, but concentrated at the soil surface, while some subterranean species, such as the centipede Lithobius lucifugus and the millipedes Geoglomeris subterranea, Cibiniulus slovacus and Archiboreoiulus pallidus, were recorded in the deepest parts of the gradient. This characterises the debris community as a mixture of soil and subterranean species with an absence of species exclusively found in caves. The use of different fixation methods in traps had a significant and selective impact on samples; millipedes were either attracted by ethylene glycol or repelled by formaldehyde. Centipedes were also captured more frequently in ethylene glycol; however, the species composition varied in each of the fixatives. Depth distribution of myriapods was similar in both fixative solutions. Traps with these fixatives could be recommended for similar ecological studies.

}, keywords = {Chilopoda, Diplopoda, MSS, Myriapoda, subterranean traps}, issn = {1313-2989}, doi = {10.3897/zookeys.930.48914}, url = {https://zookeys.pensoft.net/article/48914/}, author = {Ha{\v l}kov{\'a}, Be{\'a}ta and Tuf, Ivan Hadri{\'a}n and Tajovsk{\'y}, Karel and Mock, Andrej} }