<i>Acrida ungarica</i> Herbst, 1786 (Acrididae: Orthoptera) Karyotype Analysis

Abstract

SummaryIn this study, the karyotype of the Acrida ungarica species (chromosome number, chromosome morphology and chrosome lengths) belonging to the Acridinae subfamily of the Acridiae family was examined. As a result of these examinations, the species number of chromosomes was determined to be 2n =23 (XO). It was found that all autosomal chrosomes as well as the X chrosome had an acrocentric structure. As a result of counting carried out on five individuals, the mean chiasma frequency was found to be 16.39.

Cytogenetic and Meiotic Studies Reveal Conservatism in Acrida turrita (Linnaeus 1758) (Orthoptera: Acrididae) from Lagos, Nigeria

“…The short-horned grasshoppers (Acrida turrita) are unique in that they display a form of cytogenetic uniformity which is regarded as "karyotypic conservatism" (Aswathanarayana and Ashwath, 2006). The Acrididae family possesses a fixed number of chromosomes in which 2n can either G H be 23 in males that exhibit X0 sex determination mechanism (2n♂ = 23), or 24 in females with XX mechanism (2n♀ = 24) (Efe and Koca, 2016). The present study reveals that all 10 male specimens without exceptions have 23 chromosomes (i.e.…”

“…Although there have been several studies on chromosome morphology and chiasma distribution in the Acrididae family (Burgov, 1999;Seino et al, 2008;Seino and Akongnui, 2010;Efe and Koca, 2016), there is still need for more information on cytogenetics of Acrida turrita from Lagos, Nigeria. This present study, therefore, is aimed at filling this void by providing detailed numerical and structural information on the chromosomes of A. turrita from Nigeria.…”