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0.05). Althoughcoral reefs inChabaharBaycompared withmany corals area ofPersian Gulfhavelittle spread but havebeen avariety ofspecies, showing that Bayecologicalconditionssuitableforgrowthofdifferent speciesthat Unfortunately,theirhabitatsby expandinghuman activitiesis declininggradually.]]>
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0.05).In general ,from the results of this experiment can be concluded that using T5 fluorescent lamp leads to effect on hornwort biomass and growth factors .]]>
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0.05). However with further increasing canola meal cake in Treatments 75 and 100% the growth performances had shown unimproved and there were statistically significant with other treatments (p<0.05). Meanwhile no significant difference (p>0.05) were observed in body composition (protein, fat and ash); Only moisture of the body in Treatments 75 and 100% showed a significant increase (p<0.05). It can be concluded that upto 50% canola meal cake replacement with fish meal had reliable performance on growth of juvenile prawn and also resulted to decrease food price in this exprement.]]>
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0.05). The percentage of motile spermatozoa was (57.18 ±11.29) and (72.4 ±9.73) in the first and second stage respectively that the difference was not significant (p>0.05). According to the results of this study, the volume of sperm was higher in the first stage of sampling compared with the second one that this difference was not significant (p>0.05). The average of sperm density was higher in the second stage (0.8±0.10) compared with the first one (0.7±0.84) that the difference was not significant (p>0.05). The percentage of spermatocrit was obtained (35 ±7.16 and 33.55 ±2.91) and pH was (8.03 ± 0.12 and 7.78 ± 0.27) in the first and second stages respectively that there is a significant difference (p<0.05). The results showed that adjusting appropriate intervals for repetitive sperm stripping depending on the fish species in hatchery can be an effective technique in reproduction centers.]]>
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0.05). Metals of Hg, Cd and Pb in the muscles of Otolithes ruber from Bandar-e-Emam Khomeini were 0.04±0.008, 0.28±0.035 and 0.44±0.044 mgKg -1 wet weight. The results showed Concentration of Cd and Pb higher than in the muscle of Otolithes ruber from Bandar-e-Emam Khomeini Sea Port. Concentration of Hg and Pb in the muscle of Otolithes ruber was lower than comparison of WHO, MAFF, NHMRC, but Concentration of Cd higher than comparison of WHO, MAFF, NHMRC.]]>
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