scholarly journals The Effect of Water pH on Ventilation Frequency and Oxygen Consumption in Mullet (Mugil cephalus)

2017 ◽  
Vol 6 (7) ◽  
pp. 1046-1050
Keyword(s):  
Oxygen Consumption ◽  
Mugil Cephalus ◽  
Ventilation Frequency ◽  
Effect Of Water ◽  
Water Ph

scholarly journals Effect of Water pH on the Uptake of Acidic (Ibuprofen) and Basic (Propranolol) Drugs in a Fish Gill Cell Culture Model

2021 ◽  
Author(s):  
Elisabeth Dohmann Chang ◽  
Raewyn M. Town ◽  
Stewart F. Owen ◽  
Christer Hogstrand ◽  
Nic R. Bury
Keyword(s):  
Cell Culture ◽  
Cell Culture Model ◽  
Fish Gill ◽  
Gill Cell ◽  
Effect Of Water ◽  
Culture Model ◽  
Water Ph

scholarly journals Responses to Acute Aquatic Hypoxia in Larvae of the Frog Rana Berlandieri

1983 ◽  
Vol 104 (1) ◽  
pp. 79-95 ◽  
Author(s):  
MARTIN E. FEDER
Keyword(s):  
Heart Rate ◽  
Oxygen Consumption ◽  
Body Size ◽  
Gas Exchange ◽  
Total Oxygen ◽  
Oxygen Loss ◽  
Anuran Larvae ◽  
Ventilation Frequency ◽  
Gill Ventilation ◽  
Rana Berlandieri

The oxygen consumption of larvae of the frog Rana berlandieri Baird was reduced during exposure to aquatic hypoxia at 25°C, and under severe hypoxia the larvae lost oxygen to the water. The larvae responded to aquatic hypoxia by increasing aerial oxygen consumption and lung ventilatory frequency, and also by altering their heart rate and gill ventilation frequency. Under severe or prolonged aquatic hypoxia without access to air, Rana larvae accumulated lactate. When prevented from breathing air, the larvae were unable to compensate fully by increasing their aquatic oxygen consumption. Body size or the interaction of body size and oxygen partial pressure significantly affected the aerial oxygen consumption, the total oxygen consumption and gill ventilation frequency, but did not affect other aspects of larval gas exchange. Anuran larvae resemble air-breathing fishes in some responses to aquatic hypoxia (e.g. increased dependence upon aerial oxygen uptake and changes in ventilatory frequencies), but are unusual in some ways (e.g. oxygen loss to the water). The interactions of body size and hypoxia are not sufficient to explain why so many anuran larvae without lungs are small.

scholarly journals EFFECTS OF SALINITY ON OXYGEN CONSUMPTION AND BLOOD PROPERTIES OF YOUNG GREY MULLETS Mugil cephalus

2015 ◽  
Vol 10 (2) ◽  
pp. 143
Author(s):  
Vitas Atmadi Prakoso ◽  
Ki Tae Kim ◽  
Byung Hwa Min ◽  
Rudhy Gustiano ◽  
Young Jin Chang
Keyword(s):  
Oxygen Consumption ◽  
Metabolic Rate ◽  
Mugil Cephalus ◽  
Grey Mullet ◽  
Osmotic Adaptation ◽  
Glucose Levels ◽  
Cortisol Levels ◽  
Grey Mullets ◽  
Adaptation Ability

Oxygen consumption (OC) is one of important factors in aquaculture activities, as the oxygen is a vital condition for all the organisms living in the water and having an aerobic type of respiration. OC is the preferred method for measuring and reporting the metabolic rate in fish. The aims of this study were to evaluate the effects of salinity on OC and blood properties of grey mullets. Five experimental groups were conducted to measure OC and blood properties of grey mullets Mugil cephalus (BW: 187.9 ± 45.8 g) according to salinity (30→0 psu, 0→30 psu) changes; SDS: fish reared in seawater (SW, 30 psu) directly shifted to SW, SGF: SW fish gradually shifted to freshwater (FW, 0 psu), SDF: SW fish directly shifted to FW, FDF: FW fish directly shifted to FW, and FDS: FW fish directly shifted to SW. The result showed that OC tended to decrease in the groups of SW fish shifted to FW showing 194.5 mg O2/kg/h at 25°C in SDS to 82.4 mg O2/kg/h at 15°C in SGF. On the contrary, OC increased in the groups of FW fish shifted to SW showing 80.5 mg O2/kg/h at 15°C in FDF to 184.0 mg O2/kg/h at 25°C in FDS. Cortisol levels at the end of experiments were rapidly increased with the lowering salinities in SW fish shifted to FW showing 20.6 ng/mL in SDS to 316.2 ng/mL in SDF, while those were decreased with the increasing salinities in FW fish shifted to SW showing 40.2 ng/mL in FDF to 10.3 ng/mL in FDS. However, glucose levels showed no significant differences among all experimental groups. Based on the information from this study, aquaculture of grey mullet might be applied or developed in freshwater due to its osmotic adaptation ability.

scholarly journals Reverse Micellar Dyeing of Cotton Fiber with Reactive Dyes: A Study of the Effect of Water pH and Hardness

ACS Omega ◽  
2019 ◽  
Vol 4 (7) ◽  
pp. 11808-11814 ◽  
Author(s):  
Alan Yiu Lun Tang ◽  
Cheng Hao Lee ◽  
Yan Ming Wang ◽  
Chi Wai Kan
Keyword(s):  
Cotton Fiber ◽  
Reactive Dyes ◽  
Effect Of Water ◽  
Water Ph ◽  
Reverse Micellar
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