Study of drosophila kinship from three regions in East Java, Indonesia

Abstract

Drosophila has a massive number of members and a wide range of habitats. Different natural conditions make it possible to find diverse Drosophila populations, although several types of Drosophila are cosmopolitan. Drosophila diversity is characterized by morphological variations. The structural similarity of an individual can be used to determine various kinship relations between organisms. This research aimed to determine the relation between Drosophila from three regions in East Java, Indonesia, namely Malang, Mojokerto, and Pasuruan, based on similarities in morphological characteristics. Samples were taken from these three areas, and observations were carried out from January to May 2023 at the Genetics Laboratory, Biology Department, FMIPA UM. Identification of Drosophila is based on an identification key consisting of 52 traits. Drosophila was purified to the third generation to achieve a homogeneity of 87.5%. The kinship relation is sought by calculating the association coefficient and similarity index as a reference in preparing the dendrogram. The dendrogram illustrates that Drosophila from Malang had a closer relationship with Drosophila from the Pasuruan area than from the Mojokerto area. Drosophila kinship relations are influenced by internal and external factors, which include gene flow, mobility, distance, and natural conditions.