Muş ve Mardin (Türkiye) illerindeki Ostrakodların (Crustacea) üreme şekilleri ile ekolojik faktörler arasındaki ilişkinin belirlenmesi

This study includes a total of 164 different water bodies randomly sampled from Mardin (65 sites) and Muş (99 sites) during 13- 20 August 2013. 78 taxa (55 living spp.) belonging to 31 genera were recorded from both provinces. Of them, 31 living species with 16 sub-fossils were found from 58 of 65 sampling sites of Mardin while 45 living with 15 sub-fossils were identified from 91 of 99 sites in Muş province. The bisexual populations of 13 taxa (Candona angulata, C. neglecta, C. sonociensis, C. lindneri, Ilyocypris gibba, I. inermis, Prionocypris zenkeri, Psychrodromus fontinalis, P. olivaceus, P. cf. robertsoni, Stenocypria fischeri, Trajancypris clavata, and Zonocypris cf. costata) were found during the study. All species were new records for both provinces. Cypretta sp. Vestalenula cf. boteai, Hemicypris inversus, H. cf. congenera, Hemicypris n. sp., bisexual populations of Trajancypris clavata and Psychrodromus cf. robertsoni are the first reports for Turkish Ostracoda fauna. The last two are also new for the literature. Total number of bisexual species increased up to 77. The first two axes of Canonical Correspondence Analyses for Mardin, Muş and both provinces explained 67.5, 74.2 and 73.3 % of relationships between species and environmental variables, respectively. The most effective variables on species were elevation, water temperature and pH. UPGMA analyses did not cluster species with different sexual mode. Ecological optimum and tolerance levels of species with different sexual mode revealed fluctuations for different variables. Specific Overlap and General Overlap indices were used on ostracods for the first time. Accordingly, there was a complete overlap for some of those environmental variables by those species (3 spp. overlap for pH; 6 spp. for dissolved oxygen, 7 spp. for water temperature, 10 spp. for electrical conductivity, 6 spp. for elevation). This means that all these species used a common utilization curves for each of these variables.