این سایت در حال حاضر پشتیبانی نمی شود و امکان دارد داده های نشریات بروز نباشند
International Journal of Aquatic Biology، جلد ۱، شماره ۱، صفحات ۱-۰
عنوان فارسی
چکیده فارسی مقاله
کلیدواژه‌های فارسی مقاله
عنوان انگلیسی Body shape changes during the early development of the Beluga (Huso huso)
چکیده انگلیسی مقاله Early body shape changes of beluga sturgeon were studied using landmark-based geometric morphometric approach to recognize its allometric growth pattern. Sampling was done from hatching up to 50 days post hatching (DPH). Left side of specimens were photographed using digital camera and nine landmark points were digitized on two-dimensional images. Total length (TI) was measured using the software ImageJ. To study of the body shape changes during early development, the mean procrustes distance between all specimens of same age, for all age groups, was calculated. The scores of relative warp analysis (RW) were used as descriptors for the variation in shape. RW analysis revealed a sharp body shape change during early ontogeny on 18 DPH. Growth trajectory was computed by plotting RW against TL. The inflection point of body shape corresponds to a TL of 23.3 mm (18 DPH). Results showed that ontogenetic shape changes encompassed a pre-inflection shape changes, which included the elongation of the head and tail regions i.e. positive allometric growth pattern and post-inflection shape changes, with a nearly isometric growth pattern.
کلیدواژه‌های انگلیسی مقاله Acipenseridae,Body shape,Ontogeny,Morphometrics
نویسندگان مقاله رضا عسگری | reza asgari


سهیل ایگدری | soheil eagderi
faculty of natural resources, fisheries department, university of tehran, iran

سازمان اصلی تایید شده: دانشگاه تهران (Tehran university)

غلامرضا رفیعی | gholamreza rafiee


هادی پورباقر | hadi poorbagher


ناصر آقا | naser agh


حمید اسحاق زاده | hamid eshagh zadeh


نشانی اینترنتی http://npajournals.com/ijab/index.php/ijab/article/view/12
فایل مقاله فایلی برای مقاله ذخیره نشده است
کد مقاله (doi)
زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده
نوع مقاله منتشر شده Articles
برگشت به: صفحه اول پایگاه   |   نسخه مرتبط   |   نشریه مرتبط   |   فهرست نشریات