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Karyotype and meiosis studies in three South African Pyrgomorpha species (Orthoptera: Pyrgomorphidae)

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Abstract

Two South African Pyrgomorpha species have reduced chromosome numbers, due to centric fusions between the largest autosomes and the medium and small autosomes. P. rugosa has 2n♂=11(XO) (4 pairs of submetacentric and 1 pair of acrocentric autosomes) and P. granulata has 2n♂=13(XO) (3 pairs of submetacentric and 3 pairs of acrocentric autosomes). A third South African species has a typical Pyrgomorphidae number of 2n♂=19(XO) (acrocentrics). The mean chiasma frequency of the 2n♂=19 species is higher than that of the other two, although the frequencies of distal chiasmata in all three are similar. The recombination potential of the two species with lower chromosome numbers has been reduced, due to fewer crossovers in comparison to the 2n♂=19 species, as well as to independent assortment.

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References

  • Hewitt, G. M., 1979. Animal Cytogenetics. Vol 3: Insecta 1. B.John (ed). Borntraeger, Berlin.

    Google Scholar 

  • Jones, G. H., 1987. Meiosis. In: P. B.Moens, ed., Cell Biology: A series of monographs. Academic Press, London.

    Google Scholar 

  • Kevan, D. K. Mc E. & Hsiung, C., 1985. The tropical and southern African species of Pyrgomorpha Audinet-Serville, 1938, other than the P. conica-group (Orthoptera: Acridoidea: Pyrgomorphidae). J. ent. Soc. sth. Afr. 48(1): 49–102.

    Google Scholar 

  • Rao, R. T., 1937. A comparative study of the chromosomes of eight genera of Indian Pyrgomorphidae (Acrididae). J. Morph. 61(2): 223–254.

    Google Scholar 

  • Rufas, J. S., Gimenez-Abian & Suja, J. A., 1987. Chromosome organization in meiosis revealed by light microscope analysis of silver-stained cores. Genome 29: 706–712.

    Google Scholar 

  • Santos, J. L., Arana, P. & Giràldez, R., 1983. Chromosome C-banding patterns in Spanish Acridoidea. Genetica 61: 65–74.

    Google Scholar 

  • Sharma, A. K. & Sharma, A., 1980. Chromosome techniques. Theory and practice. 3rd ed. Butterworths, London.

    Google Scholar 

  • White, M. J. D., 1973. Animal cytology and evolution. 3rd ed. Cambridge University Press, Cambridge.

    Google Scholar 

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Authors and Affiliations

  1. Department of Genetics, University of Pretoria, 0002, South Africa

    A. Fossey, H. Liebenberg & D. H. Jacobs

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  1. A. Fossey
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  2. H. Liebenberg
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  3. D. H. Jacobs
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Fossey, A., Liebenberg, H. & Jacobs, D.H. Karyotype and meiosis studies in three South African Pyrgomorpha species (Orthoptera: Pyrgomorphidae). Genetica 78, 179–183 (1988). https://doi.org/10.1007/BF00055636

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  • DOI: https://doi.org/10.1007/BF00055636

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