Karyotypic and morphometric studies

Eight extant species have been so far recognized for Calomyscus Thomas, 1905 which is distributed in the west of Asia. The only species which was reported from the Zagros Mountains in western and southern Iran was C. bailwardi. However, based on the integrative methods such as molecular, morphometric and karyological studies a new species is worth to be described other than C. bailwardi from the Zagros Mountains. In the present survey a new species which has been distributed in western regions of Iran was described as Calomyscus behzadi sp. nov.

16p dolomite36 30-12-2021 14 0   Download

During the present study, mitotic chromosomes of two freshwater snails Gyraulus ladacensis and Indoplanorbis exustus were analyzed using ovotestis of specimens collected from the type locality (Nud pond Samba, Jammu), both belonging to class Gastropoda, order Basommatophora and family Planorbidae. The observed diploid chromosome number was 2n=36 consisting of 14 metacentric pairs, 03 submetacentric pairs and 01 subtelocentric pairs and 18 pairs of metacentric pairs respectively. Meiotic observations comprised leptotene, zygotene, pachytene, diplotene and diakinesis stages.

8p trinhthamhodang1213 30-05-2020 11 0   Download