نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه شیلات، دانشکده منابع طبیعی، دانشگاه تهران، کرج، ایران.
2 گروه علوم و مهندسی محیط زیست، دانشکدة منابع طبیعی و محیط زیست، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات، تهران، ایران.
3 گروه محیط زیست، دانشکده منابع طبیعی، دانشگاه تهران، کرج، ایران
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
This study was conducted to survey population variation of Capoeta heratensis in Hari River and Dasht-e Kavir basins of Iran using geometric morphometric technique. For this purpose, 3 populations of C. heratensis, with 30 specimens for each population, were collected from the Aal, Hari and Bidvaz rivers. The specimens were fixed into buffered formalin after anaesthetizing and transported to the laboratory. The left side of each specimen was photographed using digital camera and fifteen landmark points were digitized on 2D images using TpsDig2. The landmark data after generalised procrustes analysis were analyzed using PCA, CVA and cluster analysis using Past and MorphoJ softwares. CVA analysis displayed significant differences among three studied populations. Based on the results, Bidvaz population showed greater differences compared to two other populations. The observed differences can be attributed to the diversity of habitat and feeding habits of the studied populations as well as geographical separation.
کلیدواژهها [English]