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International Journal of Aquatic Biology، جلد ۲، شماره ۶، صفحات ۳۳۰-۰
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| عنوان فارسی |
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| چکیده فارسی مقاله |
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| عنوان انگلیسی |
Morphological variation of shad fish Alosa brashnicowi (Teleostei, Clupeidae) populations along the southern Caspian Sea coasts, using a truss system |
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| چکیده انگلیسی مقاله |
A 15-landmark morphometric truss network system was used to investigate the hypothesis of population fragmentation of Shad fish Alosa braschnicowi Borodin, 1904 along the southern Caspian Sea. A total of 181 A. braschnicowi specimens were caught from six localities, respectively from the west to the east including; Astara, Rezvanshahr, Anzali, Tonekabon, Sari and Miankale. Principal component analysis, canonical variates analysis and clustering analysis were used to examine morphological differences. Univariate analysis of variance showed significant differences between the means of the six groups for 72 standardized morphometric measurements out of 105 characters studied. In canonical variates analysis, the overall assignment of individuals into their original groups was 71.46% and scatter plot of individual component scores between CV1 and CV2 showed fish specimens grouped into six areas. Clustering analysis based on Euclidean square distances among groups of centroids using UPGMA resulted into six main clusters indicating morphologically distinction populations of A. braschnicowi in the region. These populations of A. braschnicowi are distinguished especially by head shape, eye diameter, and pre-dorsal, pre-pelvic and pre-anal distances. Therefore, it is suggested considering these morphologically different populations as distinct stock in the southern Caspian Sea coasts. |
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| نویسندگان مقاله |
سارا پاک نژاد | sara paknejad
department of fisheries, islamic azad university, tonekabon branch, mazandaran, iran.
سازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (Islamic azad university science and research branch)
عادله حیدری | adeleh heidari
department of fisheries, faculty of natural resources, university of guilan, sowmeh sara, p.o. box 1144, guilan, iran.
سازمان اصلی تایید شده: دانشگاه گیلان (Guilan university)
حامد موسوی ثابت | hamed mousavi sabet
department of fisheries sciences, faculty of natural resources, university of guilan, someh sara, guilan, iran.
سازمان اصلی تایید شده: دانشگاه گیلان (Guilan university)
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| نشانی اینترنتی |
http://npajournals.com/ijab/index.php/ijab/article/view/259 |
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| کد مقاله (doi) |
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| زبان مقاله منتشر شده |
en |
| موضوعات مقاله منتشر شده |
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| نوع مقاله منتشر شده |
Articles |
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