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Jalali, Sara, Jamili, Shahla, Borani, Mohammad, Ramezanifard, Ehsan, Sepahdari, Abolfazl. (1398). Ontogenic development of digestive accessory glands in larval and juvenile Vimba bream, Vimba vimba (Pallas, 1814). سامانه مدیریت نشریات علمی, 19(1), 99-110. doi: 10.22092/ijfs.2019.118838
Sara Jalali; Shahla Jamili; Mohammad Borani; Ehsan Ramezanifard; Abolfazl Sepahdari. "Ontogenic development of digestive accessory glands in larval and juvenile Vimba bream, Vimba vimba (Pallas, 1814)". سامانه مدیریت نشریات علمی, 19, 1, 1398, 99-110. doi: 10.22092/ijfs.2019.118838
Jalali, Sara, Jamili, Shahla, Borani, Mohammad, Ramezanifard, Ehsan, Sepahdari, Abolfazl. (1398). 'Ontogenic development of digestive accessory glands in larval and juvenile Vimba bream, Vimba vimba (Pallas, 1814)', سامانه مدیریت نشریات علمی, 19(1), pp. 99-110. doi: 10.22092/ijfs.2019.118838
Jalali, Sara, Jamili, Shahla, Borani, Mohammad, Ramezanifard, Ehsan, Sepahdari, Abolfazl. Ontogenic development of digestive accessory glands in larval and juvenile Vimba bream, Vimba vimba (Pallas, 1814). سامانه مدیریت نشریات علمی, 1398; 19(1): 99-110. doi: 10.22092/ijfs.2019.118838

Ontogenic development of digestive accessory glands in larval and juvenile Vimba bream, Vimba vimba (Pallas, 1814)

Iranian Journal of Fisheries Sciences
مقاله 185، دوره 19، شماره 1، فروردین 2020، صفحه 99-110    اصل مقاله (625.36 K)
نوع مقاله: Research Paper
شناسه دیجیتال (DOI): 10.22092/ijfs.2019.118838
نویسندگان
Sara Jalali1؛ Shahla Jamili* 1؛ Mohammad Borani2؛ Ehsan Ramezanifard1؛ Abolfazl Sepahdari3
1Department of Marine Biology, Faculty of Marine Sciences and Technology, Sciences and Research branch, Islamic Azad University, Tehran, Iran.
2National Inland Water Aquaculture Institute of Bandar Anzali
3Iranian Fisheries Science Research Institute
چکیده
The current research investigated histological development and histochemistry of digestive accessory glands of Vimba vimba from hatching through 60th day after hatching (DAH). The samples were randomly taken from day 1 (hatching) until the yolksac was absorbed (day 7) and during following day, on a daily basis, then with 2, 5, and 10 days intervals until 60 DAH. Histological procedures including fixation, tissue processing, sectioning‌, general staining such as Hematoxiline-Eosine and specific staining such as Periodic-Acid Schiff (PAS), were carried out . A primordial liver was observed at 1 DAH in the ventral region of the yolksac. The pancreas was observed at 2 DAH, and gall bladder and bile duct were developed at 4-5 DAH. At the same time when larvae were growing, digestive accessory glands continued differentiation and, at 5 DAH, hepatocytes of liver with eosinophilic cytoplasm and basophilic granules showed regular shape around Sinusoids. Coinciding with the liver development, sinusoids developed as well and hepatic cells increased in size. Sinusoids store large amount of blood to provide the necessary conditions for liver metabolism. Also, at this stage, eosinophilic zymogen granules of exocrine portion of pancreas were observed. Secretory activity of digestive accessory glands began with the emergence of PAS positive cells followed by secretion of neutral mucopolysaccharides and glycogen compounds in liver cells of larvae at 4 DAH and pancreatic cells of larvae at 4-7 DAH. In general, the results of this study can be used to identify the factors limiting larval growth, reducing casualties during exogenous feeding, and even considering a proper diet for digestive system. 
کلیدواژه‌ها
Histology؛ Development؛ Histochemistry؛ Digestive accessory glands؛ Vimba vimba
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