مقايسه تفاوت هاي شكلي جمعيت هاي ماهي كولي اروميه (Alburnus atropatenae)

Body shape comparison of Urmia bleak populations, Alburnus atropatenae

ماهي كولي اروميه (Alburnus atropatenae) بوم زاد رودخانه هاي حوضه درياچه اروميه است. در اين مطالعه تعداد 274 قطعه ماهي كولي اروميه از هفت رودخانه آق دره، نازلوچاي، باراندوز، ساروق، زرينه رود، سنته و تلخه رود مورد بررسي قرار گرفت. در بررسي ريخت سنجي هندسي در موقعيت لندمارك هاي شماره 2، 3، 8، 7 و 9 بيش ترين تغييرات مشاهده شد. هم چنين در تحليل متغيرهاي كانوني (CVA) جمعيت تلخه رود تا حدودي از ساير جمعيت ها و جمعيت نازلوچاي به طور كامل از جمعيت سنته و زرينه رود جدا شد. نتايج آناليز معني داري تفاوت هاي شكلي نشان داد بين جمعيت هاي باراندوز و تلخه رود، باراندوز و نازلوچاي، و زرينه رود و سنته تفاوت معني داري وجود ندارد (0/0001P). بيش ترين تفاوت ها و جابجايي ها در بين دو جمعيت آق دره و تلخه رود مشاهده شد. روش ريخت سنجي هندسي با وجود دارا بودن اختلاف معني داري بين هفت جمعيت تنها توانست ماهيان جمعيت تلخه رود را از ساير جمعيت ها تا حدودي جدا كند.

Urmia bleak (Alburnus atropatenae) is endemic to Iran and it has been reported from rivers of the Lake Urmia basin. In this research 274 specimens of this fish from seven rivers of Lake Urmia area including Aghdarreh، Nazloochai، Barandooz، Sarough، Zarrinehrud، Senteh and Talkhehrud were studied. In morphometric geometric، Landmarks number 2، 3، 7، 8 and 9 had the highest variation. Also in canonical variate analysis، the population of Talkhehrud River were to some extent separated from other populations، and the population of Nazloochai River was completely separated from the population of Senteh and Zarrinehrud rivers. In comparison of the morphs there was no significant differences between the populations of Barandooz and Talkherud، Barandooz and Nazloochai، and Zarrinehrud and Senteh rivers (p<0.0001). Amongst these populations، Zarrinehrud and Senteh rivers showed the highest overlap. Also، the result showed some significant differences among the other populations (p<0.0001). Populations of Aghdarreh and Talkhehrud and Talkherud and Zarrinehrud were completely separated from each other and the most differences and landmark changed were observed between Aghdarreh and Talkhehrud populations. The geometric morphemetric methods could only separate the population of Talkhehrud from other populations to a great extent، in spite of significant differences among the seven populations.