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Hemp, Claudia ; Heller, Klaus-Gerhard ; Warchałowska-Śliwa, Elżbieta ; Grzywacz, Beata ; Hemp, Andreas:
Ecology, acoustics and chromosomes of the East African genus Afroanthracites Hemp & Ingrisch (Orthoptera, Tettigoniidae, Conocephalinae, Agraeciini) with the description of new species.
In: Organisms Diversity & Evolution.
Bd. 15
(2015)
Heft 2
.
- S. 351-368.
ISSN 1618-1077
DOI: https://doi.org/10.1007/s13127-014-0194-2
Abstract
The flightless Agraeciini genus Afroanthracites, a genus restricted to East Africa, is reviewed and two newspecies are described. Exemplary for the genus Afroanthracites, the ecological niche of Afroanthracitesmontium from Mt Kilimanjaro is defined. A. montium occupieshabitats in humid and perhumid conditions and thus shows a broad altitudinal range (1250–2700 m). Concerning the acoustic communication, it is remarkable that within the micropterous genus a trend to low carrier frequencies is observedcombined with the evolution of larger stridulatory organs (mirror; resonating part of tegmen). This trend startswith species using the same ultrasonic frequencies as a brachypterousout-group and ends with species presenting clearly audible songs. Cytogenetic data are given for fiveAfroanthracites and one Afroagraecia species. Differences in chromosome numbers Afroanthracites 2n=29 andAfroagraecia 2n=27 as well as a number of major rDNA clusters (one and two, respectively) are probably useful markers to separate both genera. It is discussed whether theAfrican species evolved from a species with a presumably derived karyotype (e.g. 27 or 29 chromosomes) or if the proposed reduction of chromosome number occurred independently in Africa, Asia and Australia. The data set suggests that the African Agraeciini is of monophyletic origin, with a common ancestor of Afroagraecia and Afroanthracites in Africa. The Afroanthracites species can be divided into three groups on base of their morphology and colour pattern.Species of adjacent areas are morphologically sister groups.The most derived forms as seen in their morphology and acoustics are found in the West Usambara Mountains, part of the geologically old Eastern Arc Mountains.
Weitere Angaben
| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Institutionen der Universität: | Forschungseinrichtungen Forschungseinrichtungen > Forschungszentren Forschungseinrichtungen > Forschungszentren > Bayreuther Zentrum für Ökologie und Umweltforschung - BayCEER Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Biologie > Lehrstuhl Tierökologie II - Evolutionäre Tierökologie Fakultäten Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Biologie |
| Titel an der UBT entstanden: | Ja |
| Themengebiete aus DDC: | 500 Naturwissenschaften und Mathematik |
| Eingestellt am: | 22 Jan 2020 13:21 |
| Letzte Änderung: | 22 Jan 2020 13:21 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/54024 |