scholarly journals The effect of microplastics on the growth of Paralichthys Olivaceus

2021 ◽  
Vol 251 ◽  
pp. 02040
Author(s):  
Hui Lu ◽  
Liuqingqing Liu
Keyword(s):  
Oxygen Consumption ◽  
Treatment Group ◽  
Oxygen Consumption Rate ◽  
Consumption Rate ◽  
Paralichthys Olivaceus ◽  
Marine Ecosystem ◽  
Hydrophobic Surface ◽  
The Body ◽  
Global Environmental Issue ◽  
Average Size

In recent years, microplastics (MPs) pollution have become a global environmental issue, which aroused concern about their potential toxicity to marine organisms. However, due to the gradual depletion of natural resources, it had been rapidly developed in aquaculture. Therefore, this article studied the effect of polystyrene (PE) on the growth of Paralichthys Olivaceus. The surface of PE was rough and average size was 197.3 ± 11.2 μm. The contact angle of PE was 100.3 ± 2.5 °, which indicated that PE had a hydrophobic surface. PE exposure had no significant effect on the body length growth of fish, but compared with CK treatment, the weight growth of fish in PE treatment group was slower, which increased by 36.3% on the 28th day, but only increased by 10.9% in PE treatment group, indicating that PE could inhibit the growth of fish. PE led to the decrease of oxygen consumption rate of fish. On the 7th, 21st and 28th day, the oxygen consumption rate of fish decreased by 7.9%, 25.4% and 41.1%, respectively. Based on the above results, we concluded that marine MPs could inhibit the growth of the benthic economic fish, which would disturb the balance of the marine ecosystem.

Oxygen consumption of nymphs of Phasganophora capitata (Pictet) (Plecoptera) with respect to body weight and oxygen concentrations

1975 ◽  
Vol 53 (8) ◽  
pp. 1089-1092 ◽  
Author(s):  
N. N. Kapoor ◽  
W. Griffiths
Keyword(s):  
Body Weight ◽  
Oxygen Consumption ◽  
Dissolved Oxygen ◽  
Metabolic Rate ◽  
Oxygen Consumption Rate ◽  
Consumption Rate ◽  
The Body ◽  
Oxygen Concentrations

A closed respirometer was used for the measurement of respiratory rates [Formula: see text] of nymphs of Phasganophora capitata (Pictet). Nymphs were found to be conformers since they reduced their oxygen consumption rate when the level of dissolved oxygen in the water was reduced.No significant correlation (P > 0.05) was observed between oxygen consumption and body weight. The metabolic rate [Formula: see text] of nymphs increased less than the body weight or mass.

Microbial efficiency in a meromictic reservoir

2008 ◽  
Vol 37 (2) ◽  
Author(s):  
Grażyna Mazurkiewicz-Boroń ◽  
Teresa Bednarz ◽  
Elżbieta Wilk-Woźniak
Keyword(s):  
Carbon Dioxide ◽  
Oxygen Consumption ◽  
Release Rate ◽  
Oxygen Consumption Rate ◽  
Consumption Rate ◽  
Metabolic Efficiency ◽  
Sulphur Compounds ◽  
Carbon Dioxide Release ◽  
Microbial Efficiency ◽  
Ion Contents

Microbial efficiency in a meromictic reservoirIndices of microbial efficiency (expressed as oxygen consumption and carbon dioxide release) were determined in the water column of the meromictic Piaseczno Reservoir (in an opencast sulphur mine), which is rich in sulphur compounds. Phytoplankton abundances were low in both the mixolimnion (up to 15 m depth) and monimolimnion (below 15 m depth). In summer and winter, carbon dioxide release was 3-fold and 5-fold higher, respectively, in the monimolimnion than in the mixolimnion. Laboratory enrichments of the sulphur substrate of the water resulted in a decrease in oxygen consumption rate of by about 42% in mixolimnion samples, and in the carbon dioxide release rate by about 69% in monimolimnion samples. Water temperature, pH and bivalent ion contents were of major importance in shaping the microbial metabolic efficiency in the mixolimnion, whilst in the monimolimnion these relationships were not evident.

scholarly journals Correction: Paszkiewicz et al. A Peripheral CB1R Antagonist Increases Lipolysis, Oxygen Consumption Rate, and Markers of Beiging in 3T3-L1 Adipocytes Similar to RIM, Suggesting That Central Effects Can Be Avoided. Int. J. Mol. Sci. 2020, 21, 6639

2021 ◽  
Vol 22 (9) ◽  
pp. 4366
Author(s):  
Rebecca L. Paszkiewicz ◽  
Richard N. Bergman ◽  
Roberta S. Santos ◽  
Aaron P. Frank ◽  
Orison O. Woolcott ◽  
...  
Keyword(s):  
Oxygen Consumption ◽  
Oxygen Consumption Rate ◽  
Consumption Rate ◽  
Central Effects

The authors wish to make the following corrections to this paper [...]

scholarly journals Necrostatin-1 Supplementation to Islet Tissue Culture Enhances the In-Vitro Development and Graft Function of Young Porcine Islets

2021 ◽  
Vol 22 (16) ◽  
pp. 8367
Author(s):  
Hien Lau ◽  
Shiri Li ◽  
Nicole Corrales ◽  
Samuel Rodriguez ◽  
Mohammadreza Mohammadi ◽  
...  
Keyword(s):  
Tissue Culture ◽  
Oxygen Consumption ◽  
Insulin Secretion ◽  
Oxygen Consumption Rate ◽  
Consumption Rate ◽  
In Vitro Development ◽  
Porcine Islets ◽  
Vitro Development

Pre-weaned porcine islets (PPIs) represent an unlimited source for islet transplantation but are functionally immature. We previously showed that necrostatin-1 (Nec-1) immediately after islet isolation enhanced the in vitro development of PPIs. Here, we examined the impact of Nec-1 on the in vivo function of PPIs after transplantation in diabetic mice. PPIs were isolated from pancreata of 8–15-day-old, pre-weaned pigs and cultured in media alone, or supplemented with Nec-1 (100 µM) on day 0 or on day 3 of culture (n = 5 for each group). On day 7, islet recovery, viability, oxygen consumption rate, insulin content, cellular composition, insulin secretion capacity, and transplant outcomes were evaluated. While islet viability and oxygen consumption rate remained high throughout 7-day tissue culture, Nec-1 supplementation on day 3 significantly improved islet recovery, insulin content, endocrine composition, GLUT2 expression, differentiation potential, proliferation capacity of endocrine cells, and insulin secretion. Adding Nec-1 on day 3 of tissue culture enhanced the islet recovery, proportion of delta cells, beta-cell differentiation and proliferation, and stimulation index. In vivo, this leads to shorter times to normoglycemia, better glycemic control, and higher circulating insulin. Our findings identify the novel time-dependent effects of Nec-1 supplementation on porcine islet quantity and quality prior to transplantation.

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