Summary The cytotaxonomical characteristics of the four species Pinctada margaritifera (Linne 1758), P radiata (Leach 1814), Barbatia fusca (Bruguiere 1789), B. tenella (Reeve 1844) were studied using karyotype analysis. The diploid chromosome numbers of these four species are 28 (FN=48), 26 (FN=44), 38 (FN=42) and 36 (FN=44) respectively. The karyotype of Pinctada margaritifera is consisting of five pairs metacentric, two pairs submetacentric, three pairs subtelocentric and four pairs acrocentric chromosomes; while the karyotype of Pinctada radiata composed of five pairs metacentric, two pairs submetacentric, two pairs subtelocentric and four pairs acrocentric chromosomes; Barbatia fusca have karyotype containing of two pairs metacentric and seventeen pairs acrocentric chromosomes and; the karyotype of Barbatia tenella contains of four pairs metacentric and fourteen pairs acrocentric chromosomes. To the best of author knowledge, these results are reported for the first time in Egypt.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.