Academic literature on the topic 'Fecal pellet production'

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Journal articles on the topic "Fecal pellet production"

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Liu, Hongbin, and Chih-Jung Wu. "Effect of the silica content of diatom prey on the production, decomposition and sinking of fecal pellets of the copepod <i>Calanus sinicus</i>." Biogeosciences 13, no. 16 (2016): 4767–75. http://dx.doi.org/10.5194/bg-13-4767-2016.

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Abstract. The effects of changing the amount of silica in the cell wall of diatom prey, on the production, decomposition rate and sinking velocity of fecal pellets of the calanoid copepod, Calanus sinicus, were examined. Using different light intensities to control the growth of the diatom Thalassiosira weissflogii also led to the accumulation of different amounts of biogenic silica. Copepods were then fed either low ( ∼ 1600 cells L−1) or high ( ∼ 8000 cells L−1) concentrations of this diatom. Copepods fed a high concentration of diatoms with high-silica content exhibited a lower grazing rate
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Kirschner, Alexander K. T., Thomas C. Zechmeister, Gerhard G. Kavka, et al. "Integral Strategy for Evaluation of Fecal Indicator Performance in Bird-Influenced Saline Inland Waters." Applied and Environmental Microbiology 70, no. 12 (2004): 7396–403. http://dx.doi.org/10.1128/aem.70.12.7396-7403.2004.

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ABSTRACT Wild birds are an important nonpoint source of fecal contamination of surface waters, but their contribution to fecal pollution is mostly difficult to estimate. Thus, to evaluate the relation between feces production and input of fecal indicator bacteria (FIB) into aquatic environments by wild waterfowl, we introduced a new holistic approach for evaluating the performance of FIB in six shallow saline habitats. For this, we monitored bird abundance, fecal pellet production, and the abundance of FIB concomitantly with a set of environmental variables over a 9-month period. For estimatin
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Henriksen, Marie Vestergaard, Signe Jung-Madsen, Torkel Gissel Nielsen, et al. "Effects of temperature and food availability on feeding and egg production of Calanus hyperboreus from Disko Bay, western Greenland." Marine ecology progress series 447 (January 1, 2012): 109–26. https://doi.org/10.3354/meps09421.

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The effects of temperature and food availability on feeding and egg production of the Arctic copepod Calanus hyperboreus were investigated in Disko Bay, western Greenland, from winter to spring 2009. The abundance of females in the near bottom layer and the egg production of C. hyperboreus prior to the spring bloom document that reproduction relies on lipid stores. The maximum in situ egg production (± SE) of 54 ± 8 eggs female−1 d−1 was recorded in mid-February at chlorophyll a concentrations below 0.1 µg l−1, whereas no egg production was observed in mid-April when the spring bloom developed
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Barone, F. C., J. F. Deegan, W. J. Price, P. J. Fowler, J. D. Fondacaro, and H. S. Ormsbee. "Cold-restraint stress increases rat fecal pellet output and colonic transit." American Journal of Physiology-Gastrointestinal and Liver Physiology 258, no. 3 (1990): G329—G337. http://dx.doi.org/10.1152/ajpgi.1990.258.3.g329.

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Increased fecal pellet output that occurs during cold-restraint stress (CRS) was evaluated systematically. Free-feeding rats, which exhibit a reduced occurrence of gastric ulcers under these conditions, were studied. CRS significantly increased fecal pellet production and fluid content. However, the fecal output produced during CRS was not associated with increased gut secretory activity or somatic motor activity associated with cold restraint and did not occur in anesthetized animals. Cold and restraint stress were additive in producing increased fecal output. Significant dose-related decreas
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GrØnning, Josephine, Nam X. Doan, Nguyet T. Dinh, Khuong V. Dinh, and Torkel Gissel Nielsen. "Ecology of Pseudodiaptomus annandalei in tropical aquaculture ponds with emphasis on the limitation of production." Journal of Plankton Research 41, no. 5 (2019): 741–58. http://dx.doi.org/10.1093/plankt/fbz053.

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ABSTRACT The calanoid copepod Pseudodiaptomus annandalei is used as live feed in aquaculture because of its nutritional value and the ability to cope with environmental fluctuations in outdoor ponds. However, little knowledge exists on its ecology. Here we investigated the ecology of P. annandalei in an aquaculture pond in Vietnam. Temperature, salinity, chlorophyll a and biomass of protozoans and copepods were monitored every other day for 1 month. Experiments on protozoan growth and grazing by P. annandalei were also conducted. Copepod fecal pellet production and temperature-dependent egg ha
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Stamieszkin, Karen, Deborah K. Steinberg, and Amy E. Maas. "Fecal pellet production by mesozooplankton in the subarctic Northeast Pacific Ocean." Limnology and Oceanography 66, no. 7 (2021): 2585–97. http://dx.doi.org/10.1002/lno.11774.

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Gleiber, Miram R., Deborah K. Steinberg, and Oscar M. E. Schofield. "Copepod summer grazing and fecal pellet production along the Western Antarctic Peninsula." Journal of Plankton Research 38, no. 3 (2015): 732–50. http://dx.doi.org/10.1093/plankt/fbv070.

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Haney, James F., and Margaret A. Trout. "Relationships between fecal pellet production and feeding in the calanoid copepod Boeckella." Journal of Plankton Research 12, no. 4 (1990): 701–16. http://dx.doi.org/10.1093/plankt/12.4.701.

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Fuller, Charlotte M., Cheryl Ann Butman, and Noellette M. Conway. "Periodicity in fecal pellet production by the capitellid polychaeteMediomastus ambisetathroughout the day." Ophelia 29, no. 1 (1988): 83–91. http://dx.doi.org/10.1080/00785326.1988.10430821.

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Buck, KP, PA Bolt, and DL Garrison. "Phagotrophy and fecal pellet production by an athecate dinoflagellate in Antarctic sea ice." Marine Ecology Progress Series 60 (1990): 75–84. http://dx.doi.org/10.3354/meps060075.

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Conference papers on the topic "Fecal pellet production"

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Liang, Yuxuan, and Xiang Wang. "Preliminary Sensitivity and Uncertainty Analysis of Accident Tolerant Fuel in SMR." In 2022 29th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/icone29-92887.

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Abstract As the technology of small modular reactor (SMR) becomes mature, its safety is getting more attention. In recent research of accident tolerant fuel (ATF) such as the U3Si2 used in a large commercial pressurized water reactor can significantly improve the safety of the core due to its high thermal conductivity and good physicochemical properties. Therefore, applying the ATF in the SMR can also enhance its safety. The mPower with a thermal power output of 530 MW designed by B&amp;W company is selected as one of the SMR. In the design and production process of fuel rods, the design and m
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