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1

Karyotype characteristics of Orthoptera katydid (Ensifera, Tettigoniidae), and remarks on their evolution at different taxonomic levels

100%
Heller K. G., Warchalowska-Sliwa E.
Folia Biologica
|
1998
|
vol. 46
143-176
EN
So far, only about 400 species, subspecies, and chromosome races of 15 subfamilies of Tettigoniidae have been studied karyologically, this constituting about 7% of all described species in this group. An attempt was made to establish the basic diploid chromosome numbers of Tettigoniidae and, considering chromosome number, morphology, and the sex determining mechanisms, to suggest how karyotype evolution in the particular subfamilies could have occurred.
2

Chromosome evolution in the genus Poecilimon (Orthoptera, Tettigonioidea, Phanero- pteridae)

81%
Warchalowska-Sliwa E., Heller K. G., Maryanska-Nadachowska A., Lehmann A.
Folia Biologica
|
2000
|
vol. 48
|
issue 3-4
127-136
EN
Cytotaxonomic analysis of 20 species and subspecies of the genus Poecilimon using C-banding pattern, chiasma frequency, and morphometric characteristics of the chromosomes were described. Using a cladistic analysis the chromosome data provided a basis to produce a phylogenetic tree which was compared with a tree based on morphological characters and DNA sequence data. There are importent differences in the grouping of data sets to species obtained on the basis of morphology/DNA analyses and that based on chromosomes. The explanation of the differences between C-banding patterns and taxonomic proximity is probably that the C-banding pattern changes quickly as the result of the high degree of variation of constitutive heterochromatin.
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