نتایج جستجو برای: o ruber 9157
تعداد نتایج: 555048 فیلتر نتایج به سال:
The Influence of Otolithes ruber Consumption on Prey and Comparison with that Harvested by Fisheries
The Otolithes ruber is considered a valuable fish in the Indo-West Pacific. Estimates of the Q/B ratio and parameters of equations to ‘predict’ Q/B values for O. ruber in northwestern part of the Persian Gulf and the effects of different age-groups (age 1 to 6 year) on prey are presented. The age and food item of O. ruber were recorded on data collected from monthly samplings by bottom tra...
Investigating the relations and mechanisms of coexistence among sympatric species is essential to comprehend their ecological roles in the food webs. In the present study, the diet and trophic interactions of 5 abundant teleost species coexisting in the northern Oman Sea were examined using stomach contents analyses. The cumulative prey curves showed that the sample size of each studied species...
Planktic foraminifer Globigerinoides ruber (G. ruber), due to its abundance and ubiquity in the tropical/subtropical mixed layer, has been the workhorse of paleoceanographic studies investigating past sea-surface conditions on a range of timescales. Recent geochemical work on the two principal white G. ruber (W) morphotypes, sensu stricto (ss) and sensu lato (sl), has hypothesized differences i...
Tiger– toothed croaker (Otolithes ruber) is considered as a commercially important target species for fishermen in south of Iran, due to its high economic value and marketability. This investigation was carried out using bottom monofilament gillnet with mesh size (stretch mesh) of 8.5 cm and net height of 6 m, made of nylon twine (Polyamide) and a hanging ratio of 50% in order to determine spec...
The structures of two major phosphoglycolipids from the thermophilic bacteria Thermus oshimai NTU-063, Thermus thermophilus NTU-077, Meiothermus ruber NTU-124, and Meiothermus taiwanensis NTU-220 were determined using spectroscopic and chemical analyses to be 2'-O-(1,2-diacyl-sn-glycero-3-phospho) -3'-O-(alpha-N-acetyl-glucosaminyl)-N-glyceroyl alkylamine [PGL1 (1)] and the novel structure 2'-O...
به منظور بررسی رژیم غذایی ماهی شوریده (O. ruber)، نمونه برداری به طور ماهیانه از اسفندماه 1392 تا بهمن ماه 1393 در سواحل خوزستان و توسط ناوگان صیادی اداره شیلات استان خوزستان انجام گرفت. در مجموع معده 307 عدد ماهی شوریده بررسی شد. میانگین شاخص احشایی، فاکتور وضعیت، شاخص شدت تغذیه و شاخص خالی بودن روده به ترتیب، 0/01±0/1، 0/04±0/99، 54/83±167/89، و 50/1 محاسبه گردید. همچنین شاخص وقوع شکار برای ط...
In this research the level of mercury is analyzed in muscle tissue of Otolithes ruber retailed in Hamedan, Iran were determined by flame atomic absorption spectrometry after wet digestion. Analysis of mercury was carried out by spectrophotometrically. The average concentration of Hg in muscle tissue of Otolithes ruber was 0.030±0.026 μg/g so lower than to compare with the Maximum Allowable Conc...
Cell-free extracts of a facultative methylotroph and strict aerobe, Protaminobacter ruber, could catalyze formation of beta-methylaspartate from glutamate. beta-Methylaspartate formed was further converted to mesaconate. From these results, it was found that the cells of P. ruber contained a sequential reaction system of glutamate mutase and beta-methylaspartase. The level of glutamate mutase a...
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