Population characteristics of Unio crassus, an endangered freshwater mussel in many countries, are very important. In this study, we have attempted to determine the environmental conditions of Aydın-Çine Creek and the biometric properties of U.crassus. The largest length during the study period was 92.50 mm in February, and the smallest length was 37.03 mm in April. In addition, the heaviest individual was found to be 124.15 g in February, while the smallest individual was 6.69 g in April. It was found that 141 individuals were found in a group of 70.0-79.99 mm at maximum in the distribution frequency of U.crassus in Çine Creek. The water temperature was measured at 9.8-24.0ºC, and oxygen value was 6.0-10.4 mg/L during the study. In the current environmental conditions in Çine Creek, various sizes and population development of U.crassus have been identified.
Some important physical (fruit external color, flesh firmness, fruit size, fruit weight, fruit volume, stone cell), chemical (ash, pH, soluble solid content, sugars, titratable acidity), sensorial (appearance, firmness, sweetness, grittiness, juiciness and overall quality) and bioactive (antioxidant capacity, phenolic compounds, total phenolic content, vitamin C) characteristics of eleven local and one standard pear cultivar were investigated. All cultivars were found in national pear repository in Ataturk Horticultural Central Research Institute in Turkey. Fruit weight of pears was between 56.80 g (‘Kirmizi Biber’) and 128.94 g (‘Erkenci Uzun Sap’). Results showed that ‘Bağ’ cultivar had the highest sensorial scores (8.4 overall quality) and antioxidant capacity (21.44 mg ascorbic acid equivalent∙g-1). Stone cell were found between 63.65 (‘Gümüşhane’) and 81.65 mg dry weight∙g-1 (‘Maslovka’). The cultivar ‘Orak’ showed the highest chlorogenic acid (185.98 mg∙kg-1) and epicatechin (108.26 mg∙kg-1) content.