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Burg bei Magdeburg, Germany

Heller K.-G.,Grillenstieg 18 | Hemp C.,University of Wurzburg | Liu C.,CAS Institute of Zoology | Volleth M.,Otto Von Guericke University of Magdeburg
Zootaxa | Year: 2014

During a 14-day excursion in March 1990, 28 species of tettigonioids were found at Irangi (1°54'S, 28°27'E), ca.100 km north west of Bukavu at Lake Kivu (Democratic Republic of the Congo, formerly Zaire), and at other localities near Bu-kavu. One species -Arantia (Arantia) gracilicercata Heller sp. n. - is new to science, another one-Pantecphyllus hel-leri Schmidt et al. 2004-was already described as new in a generic revision. All our specimens of the morphologically quite diverse and sexually dimorphic phaneropterine genus Arantia were studied using molecular methods. We propose a new subgenus Arantia (Euarantia) Heller subgen. n. based on relative tegmen width. Songs and stridulatory organs were studied in 9 species. Two phaneropterines, Horatosphaga leggei and Pardalota asymmetrica, showed remarkable calling songs lasting more than 10 s and produced by quite complicated stridulatory movements. The song of the large phanerop-terine Zeuneria biramosa is noteworthy because of its unusually low carrier frequency of 3.7 kHz. Based on the exami-nation of other specimens and species, some taxonomic changes are proposed (Phaneropteridae Burmeister, 1838 stat. rev.; Afromecopoda monroviana (Karsch, 1886) stat. rev.; Leproscirtus ebneri Karny, 1919, syn. n., Leproscirtus karschi Karny, 1919, syn. n., Leproscirtus granulosus aptera Karny, 1919, syn. n., all synonyms of Leproscirtus granulosus (Karsch, 1886); Lanistoides Sjöstedt, 1913 stat. rev.; Plastocorypha cabrai Griffini, 1909 stat. n.). Copyright © 2014 Magnolia Press. Source

Grzywacz B.,Polish Academy of Sciences | Heller K.-G.,Grillenstieg 18 | Lehmann A.W.,Friedensallee 37 | Warchalowska-Sliwa E.,Polish Academy of Sciences | Lehmann G.U.C.,Humboldt University of Berlin
Journal of Zoological Systematics and Evolutionary Research | Year: 2014

We used molecular characters to infer the phylogenetic position of the Western Mediterranean bushcricket genus Odontura and to trace its high karyotype diversity. Analysis of 1391 base pairs of two mitochondrial genes (COI and ND1) and one nuclear sequence (ITS2) was conducted. Phylogenetic topologies were estimated using maximum parsimony, maximum likelihood and likelihood-based Bayesian inference. The genus Odontura is a phylogenetic outlier in respect of all other European Phaneropterinae genera and has been proposed to have originated from a hitherto unknown ancestor. Our results support the monophyly of the genus Odontura and the recognition of two subgenera: Odontura and Odonturella. We found that both Sicilian taxa of the subgenus Odontura have a completely identical morphology and song patterns. Combining these results, we proposed that both should be treated as subspecies: O. (Odontura) stenoxypha stenoxypha and O. (O.) st. arcuata. Bioacoustic data also proved to support independent markers, with song characteristics reflecting the molecular topology. Mapping the karyotypic characters onto the phylogenetic tree allows a reconstruction of the directions and transitional stages of chromosome differentiation. The number of autosomes within the genus Odontura ranges from 26 to 30. In addition to the ancestral X0 sex determination mechanism, neo-XY and neo-X1X2Y sex chromosomes have evolved independently. © 2013 Blackwell Verlag GmbH. Source

Iorgu I.S.,Grigore Antipa National Museum of Natural History | Heller K.-G.,Grillenstieg 18
Zootaxa | Year: 2013

Isophya kraussii Brunner von Wattenwyl, 1878, one of the widest spread bush-crickets within this genus, is confirmed to be present east of the Carpathian Mountains. Based on acoustic analysis and morphological characters, the populations from NE Romania are considered to belong to a different subspecies, I. kraussii moldavica ssp. n. A map with distribution of both subspecies is presented. Copyright © 2013 Magnolia Press. Source

Warchalowska-Sliwa E.,Polish Academy of Sciences | Grzywacz B.,Polish Academy of Sciences | Maryanska-Nadachowska A.,Polish Academy of Sciences | Karamysheva T.V.,RAS Institute of Cytology and Genetics | And 4 more authors.
Genome | Year: 2013

The cytogenetic characteristics of 17 species of bushcricket belonging to eight genera of the tribe Barbitistini were examined by fluorescence in situ hybridization with 18S rDNA and (TTAGGn) telomeric as probes and by C-banding, silver, and fluorochrome staining. These markers were used to understand chromosomal organization and evolutionary relationships between genera or species within the same genus. The number of 18S rDNA clusters per haploid genome that co-localized with active nucleolus organizer regions (NORs) ranged from one to five, with the most common pattern being the presence of one NOR-bearing chromosome. This ribosomal cistron was preferentially located in the paracentromeric region of autosomes and very rarely in the sex chromosome. The results demonstrated coincidence between the localization of major ribosomal genes and active NORs and the position of C-band and GC-rich regions. The rDNA/NOR distribution and the composition of chromosome heterochromatin proved to be good cytogenetic markers for distinguishing species and phylogenetic lines and for understanding the genomic differentiation and evolution of Barbitistini. A comparison of cytogenetic and morphological or behavioral traits suggests that morphological and behavioral specialization in this group was not followed by major karyotype modification (except for Leptophyes). However, the occurrence and distribution of different repetitive DNA sites tends to vary among the taxa. © 2013 Published by NRC Research Press. Source

Heller K.-G.,Grillenstieg 18 | Hemp C.,University of Wurzburg | Ingrisch S.,Zoological Research Museum Alexander Koenig | Liu C.,CAS Institute of Zoology
Journal of Orthoptera Research | Year: 2015

Phaneropterinae is the largest subfamily within the bush-crickets/katydids (Tettigonioidea), with about 2451 species, and with a world-wide distribution. Its acoustic communication differs from all other tettigonioid groups in that females primarily and typically respond to the male calling song with their own acoustic reply, a behaviour referred to as duetting. This type of response seems to have been lost only in a few species with wingless females. According to our literature review, information about the song patterns of about 330 species of Phaneropterinae have been published world-wide. Included in this number are ca 170 species of Barbitistini, a flightless West Palearctic tribe, which are treated separately. In the present study we summarize information from the above 330 species. We examine the morphology of stridulatory and hearing organs, and analyze the acoustic signals for frequency, number of syllables and number of interval types. We also have examined if and how responding by sound may have influenced other aspects of the acoustic communication system, especially the structure of the male calling song. Overall, the songs of male Phaneropterinae are similar to those of other tettigonioids. However, some Phaneropterinae species with very long and complex songs are found on all continents, exceeding in these characters nearly all other Ensifera species. These songs contain several different types of syllables and intervals of various duration. Because of this high interspecific variability (reaching from very simple to extremely complex), male phaneropterine songs are by far more variable than those of other tettigonioid families. However, since there are so few data on the behaviour of most Phaneropterinae species, and especially for females, we still are limited in our understanding of the reasons behind the song variability. Sexual selection by females choosing to respond preferentially to certain song types could be an important evolutionary force, but probably only in combination with some unknown ecological and behavioural factors. © 2015, Bio-One. All rights reserved. Source

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