The effect of the dry and wet seasons on chiasma frequency in male Taphronota thaelephora Stal. 1873 and Zonocerus variegatus L. 1753 (Orthoptera: Pyrgomorphidae) in Cameroon
Paper Details
The effect of the dry and wet seasons on chiasma frequency in male Taphronota thaelephora Stal. 1873 and Zonocerus variegatus L. 1753 (Orthoptera: Pyrgomorphidae) in Cameroon
Abstract
A study of the male meiotic systems in dry and wet season populations of the African pest grasshoppers Taphronota thaelephora and Zonocerus variegatus (Orthoptera: Pyrgomorphidae) was carried out. Data obtained revealed that mean chiasma frequency was significantly higher in the dry than wet season populations of these species. However, Duncan Multiple Range Test revealed that mean chiasma frequency was not significantly different (P>0.05) between dry and wet season populations of T. thaelephora but was significantly higher (P<0.05) in the dry than wet season populations of Z. variegatus. Differences in the number of rod and ring shaped bivalents in Diplotene were not consistent in the dry and wet season populations of both species nor were the number of bivalents with 1, 2 and 3 chiasmata. These results indicated that this environmental cue is not responsible for the observed differences in chiasma frequency in these pest species.
Cobror O, Olmo E, Odiema G, Angelini E, Ciarcia G. 1986. Cyclic variation of chiasma frequency and distribution in Podacris sicula (Reptilia. Lacertidae). Genetica 71(31), 31 – 37.
Gupta PK. 2005. Cytology, Genetics and Evolution. Rastogi Publications.
Iduwu AB, Modder WWD. 1996. Possible control of the stinking grasshopper, Zonocerus variegatus (L) (Orthoptera : Pyrgomorphidae) in Ondo State, through human consumption. The Nigerian Field 61, 7 – 14.
Kekeunou S, Wiese S, Messi J, Tamo M. 2006. Farmers’ perception on the importance of variegated grasshopper (Zonocerus variegatus (L)) in the agricultural production system of the humid forest zone of southern Cameroon. Journal of Ethnobiology and Ethnomedicine 2(17), 1 -12.
King M, Hayman D. 1978. Seasonal variation of chiasma frequency in Phyllodactylus marmoratus. Chromosoma 69, 131 – 154.
Lopez E, Pradillo M, Oliver C, Romero C, Cunado N, Santos JL. 2012. Looking for natural variation in chiasma frequency in Arabidopsis thaliana. Journal of Experimental Botany 63 (2), 887 – 894.
Nolte DJ, Ildeko D. Meyers B. 1969. Genetic and environmental factors affecting Chiasma formation in locusts. Chromosoma 27, 145 – 155.
Nonvieller GV. 1984. Catalogue des insectes du Cameroun d’intérêt agricole. PRIFAS Montpellier.
Oyidi O. 1967a. Variation and variability in Orthopteran insects. I. The influence of age on chiasma frequency in Zonocerus variegatus L. (Acrididae). Journal of the west African Science Association 12, 131 – 138.
Oyidi O. 1967b. Variation and variability in Orthopteran insects. IV. Notes on the biological status of Zonocerus variegatus L. (Acrididae) in Nigeria, with particular reference to the relationship between the dry and wet season populations. Journal of the west African Science Association 13, 159 – 164.
Sanchez –Moran E, Armstrong SJ, Santos JL, Franklin FCH, Jones GH. 2002. Variation in chiasma frequency among eight accessions of Arabidopsis thaliana. Genetics 162(3), 1415 – 1422
Shaw DD. Genetic and environmental components of chiasma control. I. Spartial and temporal variation in Schistocerca and Stethophyma. Chromosoma 34, 281 – 301
Seino RA. 1989. Cytogenetic characterization of seven Acridomorphoid grasshoppers. MPhil. Dissertation, University of Lagos, Nigeria.
Seino RA, Akongnui T. 2010. Meiotic study of Acrida turrita (Linnaeus 1758), Paracinema luculenta Karsch 1896 and Morphacris fasciata (Thunberg 1815) (Orthoptera: Acrididae). International Journal of Biological and Chemical Sciences 4(6), 1914-1921
Seino RA, Focho DA, Njukeng FA. 2002. Observations on the meiotic process in the African pest grasshopper Taphronota thaelephora Stal. (Orthoptera: Pyrgomorphidae). Journal of the Cameroon Academy of Sciences 2(1), 3 – 6.
Seino RA, Mpoame M, Nembot E. 2001. Observations on the food preferences of Taphronota thaelephora Stal. (Orthoptera: Pyrgomorphidae). Journal of Science and Environment 1, 29 – 134.
Verma PS, Agarwal VK. 2005. Cell Biology, Molecular Biology, Evolution and Ecology. S Chand & Company Ltd. Ram Nagar, New Delhi 110-055.
White MJD. 1973. Animal cytology and Evolution. 3rd edition. Cambridge Univsersity Press.
Williams GO, Ogunbiyi BI. 1995. Chromosome morphology and meiosis in Zonocerus variegatus L. (Orthoptera: Pyrgomorphidae). Cytologia 60, 111 – 116.
Seino Richard Akwanjoh, Dongmo Tonleu Ingrid, 2013. The effect of the dry and wet seasons on chiasma frequency in male Taphronota thaelephora Stal. 1873 and Zonocerus variegatus L. 1753 (Orthoptera: Pyrgomorphidae) in Cameroon. Int. J. Biosci., 3(4), 1-7.
Copyright © 2013 by the Authors. This article is an open access article and distributed under the terms and conditions of the Creative Commons Attribution 4.0 (CC BY 4.0) license.