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This article is a first record on the karyotypic features of Acrida turrita, Paracenema luculenta, and Morphacris fasciata (Orthoptera: Acrididae). The lacto-propionic orcein squash technique was used to prepare chromosome smears from the testes of specimens collected in May 2009 from the premises of the Institute for Rural Development (IRAD) Batoke, Limbe, in the South West Region of Cameroon. Analysis of these preparations revealed that the three species have the basic Acrididae complement consisting of 23 acrocentric chromosomes [2n‰= 23(22A+X0)]. The autosomes could be divided into 3 size groups: long, medium and short. The number of chromosomes in the different size groups varied among the species. A. turrita had 2 long, 7 medium and 2 short pairs of chromosomes while P. luculenta and M. fasciata each had 6 long, 2 medium and 3 short chromosome pairs. The mean chromosome lengths in the species were 71.80 } 0.661ƒEm, 83.70 } 0.39ƒEm, and 67.10 } 0.31ƒEm for A. turrita, P. luculenta and M. fasciata respectively. The X chromosome was medium in A. turrita and M. fasciata and long in P. luculenta. The chromosomes in these species were acro/telocentric in morphology.

international journal of biological and chemical sciences

Meiotic study of &lt;i&gt;Acrida turrita&lt;/i&gt; (Linnaeus 1758), Paracinema luculenta Karsch 1896 and &lt;i&gt;Morphacris fasciata&lt;/i&gt; (Thunberg 1815) (Orthoptera: Acrididae)