Iranian Scientific Fisheries Journalhttp://hdl.handle.net/1834/178042024-03-29T07:41:45Z2024-03-29T07:41:45ZEfficiency of fishing gear used for king fish fishery with the emphasize on gill nets in Oman Sea- coastal waters of Sistan and Baluchestn ProvinceHosseini, S.A.Enayati, Sh.http://hdl.handle.net/1834/403232021-07-24T02:01:26Z2018-01-01T00:00:00ZEfficiency of fishing gear used for king fish fishery with the emphasize on gill nets in Oman Sea- coastal waters of Sistan and Baluchestn Province
Hosseini, S.A.; Enayati, Sh.
Efficiency of various meshes of gillnets and trolling gear was investigated for catching kingfish (Scomberomorus commerson) in coastal waters of Sistan and Baluchestan province in 2007. In gillnets with mesh sizes between 57 to 110 mm and netting of monofilamnet and multifilament, the size distribution of kingfish ranged between 40 to 78 cm of fork length, which all specimen caught were immature. In mesh size of 146 mm and 171 mm, the length range of the species was larger, in which the frequency of immature fish for the respective mesh sizes was 19 and 11. In general, most fish was captured by wedging in the all mesh sizes. The size range of kingfish captured by the trolling was between 52 and 147 cm, of which more than 50 percent of caught fish were immature. The proportion of kingfish catches in the gillnets of 57-110 mm mesh sizes is about 13% of the total catch composition, for which the mesh sizes are considered as the dominant gillnets for capturing the species in this area. The conribution of kingfish catches in 133, 146, and 171 mm mesh sizes was 1.1, 52.3 and 18.9% respectively, with a 146-mm mesh size is considered as a dominant gillnet for this species. The implementation of the ban on the use of 57 to 110 mm mesh sizes for exploitation of kingfish is mandatory, which the mesh size of 146 mm and above seems to be appropriate for responsible fishery of the species. However, recommendation of standard mesh size needs to be re-examined in field trials.
2018-01-01T00:00:00ZEffect of galacto oligosaccharide prebiotic on growth performance, survival and several of innate immunity parameters of rainbow trout (Oncorhynchus mykiss) larvaeAli, M.Akbary, P.Soltanian, S.Gholamhosseini, A.http://hdl.handle.net/1834/403082021-07-24T01:59:57Z2018-01-01T00:00:00ZEffect of galacto oligosaccharide prebiotic on growth performance, survival and several of innate immunity parameters of rainbow trout (Oncorhynchus mykiss) larvae
Ali, M.; Akbary, P.; Soltanian, S.; Gholamhosseini, A.
Prebiotics are non-digestive food ingredients which beneficially affect the host by selectively stimulating the growth and activity of health-promoting bacteria in the intestinal tract. This experiment was conducted to evaluate the effect of dietary supplementation of galactooilgosaccharide on the growth performances, survival and several of innate immunity parameters of rainbow trout (Oncorhynchus mykiss) larvae for 60 days. In this experiment, 360 of larvae (with average weight of 0.13±0.01g) in 4 treatments and 3 replicates (n=30 in each replicate) in a completely randomized design was divided and fed with diets containing 0, 1, 2 and 3 percent galactooligosaccharide respectively. The present results showed that highest WG, SGR and PER were observed in the diet containing 2 and 3 percent of dietary galactoologosaccharide which had a significant difference compared with other treatments (p<0.05). The highest, survival, total protein, albumin and globulin levels were observed in treatments containing 2 percent of dietary galactooligosaccharide which showed a significant difference compared with other treatments (p<0.05). Finally, the present results suggest that diets containing 2 percent of dietary galactooligosaccharide could improve growth, survival and innate immunity responses of rainbow trout.
2018-01-01T00:00:00ZStudy on meiobenthos abundance and their relationship with the condition of sediment in the northern creek of the Bushehr provinceMirdar, J.Nikouyan, A.R.Karami, M.Owfi, F.http://hdl.handle.net/1834/392602021-07-15T03:30:01Z2004-01-01T00:00:00ZStudy on meiobenthos abundance and their relationship with the condition of sediment in the northern creek of the Bushehr province
Mirdar, J.; Nikouyan, A.R.; Karami, M.; Owfi, F.
The frequency and distribution of meiobenthoses in northern Creeks of the Bushehr Province during autumn2000- Summer200I were studied for determining the condition of sea sediments using seasonal sampling. Samplings were carried out in 10 stations from Doube Creek to Bandar Genaveh Creek as well as a control station in the Persian Gulf. Totally, 4 taxa of meiofauna were identified that Ostracoda and Gastropoda with 29% and 18% had the maximum and minimum percent of abundance, respectively. The maximum percent of abundance in station No.10(control station at sea) with 20735 n/m2 and the minimum abundance in station No.2 (Creek of Farake)with 5320 n/m2 were observed. The maximum abundance of meiobenthos in spring with 167603 n/m2 and the minimum abundance during winter with 61365 nlm2 were determined. In addition, grain size, soil texture and total organic matter (T.O.M) of sediment in 10 stations were analyzed. Results showed that station No.10 with 11.79% had the maximum percent of T.O.M while the minimum T.O.M (3.87%) in station No.4 (Gasir Creek) was observed. The correlation of sampling station based on the abundance of meiobenthos was also analyzed.
2004-01-01T00:00:00ZExperimental study on histology of circumstance of wound healing process in common carp (Cyprinus carpio)Sharifpour, I.http://hdl.handle.net/1834/392562021-07-15T03:29:39Z2004-01-01T00:00:00ZExperimental study on histology of circumstance of wound healing process in common carp (Cyprinus carpio)
Sharifpour, I.
The present experimental research was carried out to study the histology the inflammatory response and circumstance of wound healing process in the inflicted skin and underlying muscle of common carp. A number of 30 fishes with average length of 22cm in a recirculating glass aquaria system, at an average temperature at 27°C, were used for this study. A surgical wound (1.5-2.0cm long x 0.5cm deep) without complication of secondary infections, was made by sterilized scalpel blade into the left dorsal muscle of each anaesthetized fish. At least one wounded fish was sacrificed and sampled at 30 minutes, I, 2, 4, 6, 8, 10, 12, 24 hours and thereafter at 2, 4,6, 8, 16, 24, 32, 40, 50 and 60 days after wounding. The samples were fixed in 10% buffered formalin and 5µ sections were prepared using standard histological method. The sections were stained by the standard H&E staining method. Also periodic acid schiff (PAS) with tartrazin were used for specific tissue features. The stained sections were examined using light microscope. Re-epithelialization of wounded epidermis was completed within 4 hours after wounding. Macrophage infiltration began at 2 hours, and myophagia at 6 hours. Fibroplasia and muscle regeneration were initiated at 2 days after wounding. After 16 days, epidermis was normal and dermis was completely linked. The wounded area restored its main components by 16 to 24 days after wounding. This study revealed that a healthy carp is able to have a rapid and effective inflammatory response and also high potential of repairing against surgical wound.
2004-01-01T00:00:00Z