نوع مقاله : مقاله پژوهشی
نویسندگان
1 مرکز پژوهشی حوضه اقلیمی خزر، دانشگاه مازندران، بابلسر، ایران
2 گروه زیست شناسی دریا، دانشکده علوم دریایی و اقیانوسی، دانشگاه مازندران، بابلسر، ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
This research was occurred to investigate some morphometric characteristics of Clupeonella cultriventris in Amirabad port, Babolsar and Anzali port in the South Basin of the Caspian Sea during summer 2019. A total of 90 fish including 30 specimens from each station were caught and 23 morphometric Characteristics were studied. Mean difference coefficients of morphometric characteristics for common kilka in Amirabad port, Babolsar, and Anzali port were 9.34, 8.77 and 11.03, respectively. Morphometric data before analysis were standardized to reduce errors of allometric growth. Results of 23 morphometric characteristics in three stations indicated significant differences between stations (P≤0.05). Bandar Anzali station differs in 23 morphometric characteristics with Babolsar port and in 20 characteristics with Bandar Amirabad. Babolsar and Bandar Amirabad station differed only in 3 characteristics. The principal component analysis was performed on 7 factors which concluded 74.924% of the characteristics. Results of fish morphometric characteristics showed an overlapping between Babolsar station with two stations of Amirabad port and Bandar Anzali port, but stations of Bandar Amirabad and Bandar Anzali were not overlapped. In this study, geographical separation can be considered as the most influential factor in morphological differences between the fish of three studied areas.
کلیدواژهها [English]