comparison of zeolite (clinoptilolite) and activated carbon, in ammonia removal during transport of live rainbow trout fry (oncorhynchus mykiss)

نویسندگان

هادی پورباقر

استادیار گروه شیلات، دانشکدۀ منابع طبیعی، دانشگاه تهران، کرج، ایران سهیل ایگدری

استادیار گروه شیلات، دانشکدۀ منابع طبیعی، دانشگاه تهران، کرج، ایران محمد هرسیج

استادیار، گروه منابع طبیعی، دانشگاه گنبدکاووس، گنبدکاووس، ایران امیرحسین حمیدیان

استادیار گروه محیط زیست ، دانشکدۀ منابع طبیعی، دانشگاه تهران، کرج، ایران

چکیده

increasing the concentration of ammonia in water can cause fish death. this study was conducted to compare the performance of conditioned activated carbon and zeolite in ammonia (tan = total ammonia nitrogen) removal in a simulated transport of rainbow trout fry in 40-liter plastic bags. hence, responses of zeolite and conditioned activated carbon in ammonia (tan) removal at different concentrations of absorbents, i.e. 0, 5, 10 and 15 gl-1 and transportation times i.e. 12 and 24 hours and fry densities i.e. 20, 50 and 80 fry.bag-1 were compared, respectively. both time and fish density had significant effect on tan production (p

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منابع مشابه

Rainbow Trout, Oncorhynchus mykiss

Rainbow trout are classified as Oncorhynchus mykiss, and as such belong to the same genus as Pacific salmon, and to the family Salmonidae, which includes Atlantic salmon (Salmo salar), various trout (Salvelinus sp.), Arctic char (Salvelinus alpinus), Arctic grayling (Thymallus arcticus) and whitefish (Coregonus sp.). Rainbow trout are native to areas around the North Pacific Ocean, from souther...

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Intersex Occurrence in Rainbow Trout (Oncorhynchus mykiss) Male Fry Chronically Exposed to Ethynylestradiol

This study aimed to investigate the male-to-female morphological and physiological transdifferentiation process in rainbow trout (Oncorhynchus mykiss) exposed to exogenous estrogens. The first objective was to elucidate whether trout develop intersex gonads under exposure to low levels of estrogen. To this end, the gonads of an all-male population of fry exposed chronically (from 60 to 136 days...

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Protein level affects the relative lysine requirement of growing rainbow trout (Oncorhynchus mykiss) fry.

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CO2 transport and excretion in rainbow trout (Oncorhynchus mykiss) during graded sustained exercise.

A quantitative analysis of CO2 transport and excretion was conducted in seawater acclimated rainbow trout (Oncorhynchus mykiss) swimming at different sustained swimming velocities. CO2 excretion increased linearly with cardiac output during exercise but arterial P(CO2) (Pa(CO2)) and total CO2 levels also increased indicating a diffusion limitation to CO2 excretion. The elevated Pa(CO2) was not ...

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Sensitivity of ventilation and brain metabolism to ammonia exposure in rainbow trout, Oncorhynchus mykiss.

Ammonia has been documented as a respiratory gas that stimulates ventilation, and is sensed by peripheral neuroepithelial cells (NECs) in the gills in ammoniotelic rainbow trout. However, the hyperventilatory response is abolished in trout chronically exposed (1+ months) to high environmental ammonia [HEA; 250 μmol l(-1) (NH4)2SO4]. This study investigates whether the brain is involved in the a...

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عنوان ژورنال:
محیط زیست طبیعی

جلد ۶۶، شماره ۳، صفحات ۲۵۵-۲۶۰

کلمات کلیدی
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