Bazı Sucul Böceklerde (Coleoptera) Eşeysel Dimorfizm ve Yapısal Bozukluklar Örneği

Abstract

Freshwater is a very important part of the ecosystem. Aquatic insects are at the center of importance of fresh waters due to their remarkable number and diversity.. The purpose of this study was to compare the morphological differences in male and female individuals with the arithmetic mean of some body measurements and to give a summary of rare unexpected structural disorders. On observing sexual dimorphism, Helophorus aquaticus Linnaeus, 1758 (Coleoptera) specimens were selected from the samples collected from Erzurum Wetlands (Turkey) between April and October (2021), as it has a large body and their number in the collection was sufficient. Measurements were performed under a stereo microscope. In this context, some differences in measurements were evaluated by considering sexual dimorphism, some structural disorders and gender-developmental stages in our study. Along with some ecological data, like sexual difference of approximately 100 samples, measurement differences were identified with body length 0.1-0.4 mm, body width 0.1-0.3 mm and leg length 0.1-0.3 mm. There are differences in measurements between the two groups, and in some species belonging to some families of the other Coleptera order, individuals with structural disorders have been identified.. It is believed that the developmental stages and sexual dimorphism size differences are important data for future ecological and evolutionary studies.