A survey on osmoregulatory potential of Bream, Abramis brama (Berg, 1949) fry for restocking management programs
Journal Title: Scientific Journal of Animal Science - Year 2013, Vol 2, Issue 3
Abstract
Bream (Abramis brama, Berg, 1949; Family: Cyprinidae) is commercially valuable fish in the Caspian Sea fishing industry. Iranian Fisheries Organization annually produces and release up to 19 million Bream fries size for recruiting of this species. Its fries are mostly released into the Anzali wetland with 4 ppt salinity. Meanwhile, they sometimes are released into Sefidrood River (0.5 ppt), Sefidrood River estuary (8 ppt) and directly into the Caspian Sea (12 ppt). To determine whether these alternative locations are suitable for release, sixty fingerling size Bream (0.5±0.13 g b.w.) were exposed to four salinity levels of these locations i.e. 0.5, 4, 8 and 12 ppt, for 120 hrs. The results displayed that accumulated mortality rate was significantly lower in exposed fish to 4 ppt (P<0.05) in compare to others. No differences in size of gill chloride cells were observed among treatments; however, chloride cell number was significantly higher in all treatments except for 4 ppt treatment (P<0.05). Hind-gut epithelium thickness significantly decreased in specimens at 8 and 12 ppt treatments after 120 hrs (P<0.05). The results do not suggest releasing Bream fries directly into the Caspian Sea and also, the Anzali wetland cwas confirmed as the suitable releasing site.
Authors and Affiliations
R. Asgari*| Department of Fisheries, Faculty of Natural Resources, University of Tehran, 31585-4314 Karaj, Iran., B. Mojazi Amiri| Department of Fisheries, Faculty of Natural Resources, University of Tehran, 31585-4314 Karaj, Iran., S. Eagderi| Department of Fisheries, Faculty of Natural Resources, University of Tehran, 31585-4314 Karaj, Iran., M. A. Nematollahi| Department of Fisheries, Faculty of Natural Resources, University of Tehran, 31585-4314 Karaj, Iran.
Keywords
Related Articles
- EP ID EP636
- DOI -
- Views 454
- Downloads 22
Nutrients intake and digestibility of growing and fattening Uda sheep fed graded levels of ginger in semi-arid Nigeria
Two separate experiments were conducted at Usmanu Danfodiyo University Livestock Teaching and Research Farm to assess intake and digestibility of nutrients for growing and fattening Uda sheep fed graded level of ginger (...
Evaluation of bivalve clearance rate (CR) as a physiological indicator of heavy metal toxicity in freshwater mussel, Ano
This study was performed to evaluate suitability of clearance rate (CR) as a physiological indicator of zinc (essential element) and chromium (non-essential element) toxicity in Anodonta cygnea (Linea, 1876). CR of biv...
Effect of processed wild cocoyam corm meal (caladium bicolor) on the growth and carcass characteristics of broiler birds
The study was designed to determine the effect of feeding graded levels of processed wild cocoyam corn meal (Caladium bicolor) on the performance and carcass characteristics of broiler birds. One hundred Anak broilers...
Field evaluation of different antibacterial antibiotic and plant extracts against bacterial blight of soybean caused by
A field experiment was carried out to study effect of different antibacterial antibiotics and plant extracts against bacterial blight of soybean caused by Pseudomonas syringae pv. glycinea. The highest mean per cent di...
Rural poultry production and health management practices in central zone of tigray, Ethiopia
The objective of this study was to assess rural poultry production andmanagement practices in lowland and midland agro-ecological zones of centralTigray in Northern Ethiopia (13015’ and 14039’ North latitude, and 380...