Chiasma Localization in Four South African Grasshopper Species (Acridinae: Orthoptera)
نویسندگان
چکیده
منابع مشابه
Botryosphaeriaceae species overlap on four unrelated, native South African hosts.
Botryosphaeriaceae represents an important and diverse family of latent fungal pathogens of woody plants. We address the question of host range of these fungi by sampling leaves and branches of four native South African trees, including Acacia karroo (Fabaceae), Celtis africana (Cannabaceae), Searsia lancea (Anacardiaceae), and Gymnosporia buxifolia (Celastraceae). Two new species of the Botryo...
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A previously unknown radiation among flightless spring katydids (Tettigoniidae: Phaneropterinae: Brinckiella) in Western and Northern Cape provinces of South Africa is described. Seven species are described as new (B. aptera n. sp., B. arboricola n. sp., B. elegans n. sp., B. karooensis n. sp., B. mauerbergerorum n. sp., B. serricauda n. sp., and B. wilsoni n. sp.) and one species (B. viridis C...
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We compared egg survivorship and egg development time at different soil moistures for two closely related grasshopper species from divergent habitats: marsh-inhabiting Romalea microptera (Beauvois) versus desert-inhabiting Taeniopoda eques (Burmeister). These two species can interbreed and produce viable offspring. In nature, both species have a similar 8-9 mo subterranean egg stage, but their ...
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Although grasshoppers are common salt marsh herbivores, we know little about geographic variation in their species composition. We documented latitudinal variation in species composition of the tettigoniid grasshopper fauna of Atlantic Coast salt marshes. Tettigoniids (N=740 adults) were collected from the Spartina alterniflora zone of 31 salt marsh sites across a latitudinal range of 13.19° (F...
متن کاملDo Exogenous DNA Double-Strand Breaks Change Incomplete Synapsis and Chiasma Localization in the Grasshopper Stethophyma grossum?
Meiotic recombination occurs as a programmed event that initiates by the formation of DNA double-strand breaks (DSBs) that give rise to the formation of crossovers that are observed as chiasmata. Chiasmata are essential for the accurate chromosome segregation and the generation of new combinations of parental alleles. Some treatments that provoke exogenous DSBs also lead to alterations in the r...
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ژورنال
عنوان ژورنال: Caryologia
سال: 1990
ISSN: 0008-7114,2165-5391
DOI: 10.1080/00087114.1990.10797004