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Journal articles on the topic 'Fecal pellet production'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

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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3

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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4

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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7

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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8

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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9

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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10

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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11

Neira, Carlos, and Thomas Höpner. "Fecal pellet production and sediment reworking potential of the polychaeteHeteromastus Filiformisshow a tide dependent periodicity." Ophelia 37, no. 3 (1993): 175–85. http://dx.doi.org/10.1080/00785326.1993.10429916.

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12

Youngbluth, Marsh J., Thomas G. Bailey, Peter J. Davoll, Charles A. Jacoby, Pamela I. Blades-Eckelbarger, and Carolyn A. Griswold. "Fecal pellet production and diel migratory behavior by the euphausiid Meganyctiphanes norvegica effect benthic-pelagic coupling." Deep Sea Research Part A. Oceanographic Research Papers 36, no. 10 (1989): 1491–501. http://dx.doi.org/10.1016/0198-0149(89)90053-8.

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13

Dunmire, Kara M., Tryon A. Wickersham, Leslie L. Frenzel, et al. "Effects of adding liquid lactose or molasses to pelleted swine diets on pellet quality and pig performance." Translational Animal Science 4, no. 2 (2020): 616–29. http://dx.doi.org/10.1093/tas/txaa039.

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Abstract Two experiments were conducted to evaluate the effects of including liquid lactose (LL) and molasses (M) in swine diets on pellet quality and pig performance. In experiment 1, a total of 194 nursery pigs (DNA 241 × 600, initially 6.7 ± 0.4 kg at 27 d of age) were used in a 33-d experiment evaluating the effects of LL (SweetLac 63; Westway Feed Products, Tomball, TX) or cane molasses on nursery pig performance and pellet quality. Pelleted experimental diets were fed from d 0 to 21, and a common pelleted diet fed from d 21 to 33. Dietary treatments consisted of a control diet containing

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14

Dangerfield, J. M., and A. E. Milner. "Millipede Fecal Pellet Production in Selected Natural and Managed Habitats of Southern Africa: Implications for Litter Dynamics." Biotropica 28, no. 1 (1996): 113. http://dx.doi.org/10.2307/2388776.

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15

Buck, KR, R. Marin, and FP Chavez. "Heterotrophic dinoflagellate fecal pellet production: grazing of large, chain-forming diatoms during upwelling events in Monterey Bay, California." Aquatic Microbial Ecology 40 (2005): 293–98. http://dx.doi.org/10.3354/ame040293.

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16

Strømgren, Tor, Marianne V. Nielsen, and Lars-Otto Reiersen. "The effect of hydrocarbons and drilling fluids on the fecal pellet production of the deposit feeder Abra alba." Aquatic Toxicology 24, no. 3-4 (1993): 275–86. http://dx.doi.org/10.1016/0166-445x(93)90076-d.

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17

Sullivan, Thomas P., Druscilla S. Sullivan, Pontus M. F. Lindgren, and Douglas B. Ransome. "Long-term responses of mammalian herbivores to stand thinning and fertilization in young lodgepole pine (Pinus contorta var. latifolia) forest." Canadian Journal of Forest Research 40, no. 12 (2010): 2302–12. http://dx.doi.org/10.1139/x10-173.

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Snowshoe hares (Lepus americanus Exrleben, 1777), mule deer (Odocoileus hemionus (Rafinesque, 1817)), and moose (Alces alces (L., 1758)) commonly occur in young coniferous forests. This study was designed to test the hypothesis that large-scale pre-commercial thinning (PCT) and repeated fertilization 15–20 years after the onset of treatments in young lodgepole pine (Pinus contorta var. latifolia Engelm. ex S. Wats.) stands would enhance relative habitat use by hares, deer, and moose compared with unmanaged stands. Study areas were located in south-central British Columbia, Canada. Habitat use

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18

Stukel, Michael R., Lihini I. Aluwihare, Katherine A. Barbeau, et al. "Mesoscale ocean fronts enhance carbon export due to gravitational sinking and subduction." Proceedings of the National Academy of Sciences 114, no. 6 (2017): 1252–57. http://dx.doi.org/10.1073/pnas.1609435114.

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Enhanced vertical carbon transport (gravitational sinking and subduction) at mesoscale ocean fronts may explain the demonstrated imbalance of new production and sinking particle export in coastal upwelling ecosystems. Based on flux assessments from 238U:234Th disequilibrium and sediment traps, we found 2 to 3 times higher rates of gravitational particle export near a deep-water front (305 mg C⋅m−2⋅d−1) compared with adjacent water or to mean (nonfrontal) regional conditions. Elevated particle flux at the front was mechanistically linked to Fe-stressed diatoms and high mesozooplankton fecal pel

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19

Buttino, I. "The effect of low concentrations of phenol and ammonia on egg production rates, fecal pellet production and egg viability of the calanoid copepod Acartia clausi." Marine Biology 119, no. 4 (1994): 629–34. http://dx.doi.org/10.1007/bf00354327.

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20

Fields, D. M., J. A. Runge, C. Thompson, et al. "Infection of the planktonic copepod Calanus finmarchicus by the parasitic dinoflagellate, Blastodinium spp: effects on grazing, respiration, fecundity and fecal pellet production." Journal of Plankton Research 37, no. 1 (2014): 211–20. http://dx.doi.org/10.1093/plankt/fbu084.

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21

Hare, James F., Calen P. Ryan, Chris Enright, et al. "Validation of a radioimmunoassay-based fecal corticosteroid assay for Richardson’s ground squirrels Urocitellus richard-sonii and behavioural correlates of stress." Current Zoology 60, no. 5 (2014): 591–601. http://dx.doi.org/10.1093/czoolo/60.5.591.

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Abstract We validated a radioimmunoassay-based method quantifying fecal glucocorticoid metabolites (FGMs) from captive male and female Richardson’s ground squirrels Urocitellus richardsonii. Blood samples were drawn to explore the correlation between plasma cortisol and FGM concentrations. We also injected groups of squirrels with normal saline (CTL; control), adre-nocorticotropic hormone (ACTH; stimulating adrenal activity), or dexamethasone (DEX; suppressing adrenal activity). Potential correlations between stress and behaviour were explored through quantification of fecal pellet production

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22

Lyle, Joanna T., Robert K. Cowen, Su Sponaugle, and Kelly R. Sutherland. "Fine-scale vertical distribution and diel migrations of Pyrosoma atlanticum in the northern California Current." Journal of Plankton Research 44, no. 2 (2022): 288–302. http://dx.doi.org/10.1093/plankt/fbac006.

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Abstract Blooms of the colonial pelagic tunicate Pyrosoma atlanticum in 2014–2018 followed a marine heatwave in the eastern Pacific Ocean. Pyrosome blooms could alter pelagic food webs of the northern California Current (NCC) by accelerating the biological pump via active transport, fecal pellet production and mortality events. Although aggregations of P. atlanticum have the potential to shape marine trophic dynamics via carbon export, little is known about pyrosome vertical distribution patterns. In this study, we estimated the distribution of P. atlanticum in the NCC along transects off of O

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23

Shayegan, Majid, Abolghasem Esmaeili Fereidouni, Naser Agh, and Khosrow Jani Khalili. "Effects of salinity on egg and fecal pellet production, development and survival, adult sex ratio and total life span in the calanoid copepod, Acartia tonsa: a laboratory study." Chinese Journal of Oceanology and Limnology 34, no. 4 (2016): 709–18. http://dx.doi.org/10.1007/s00343-016-5030-4.

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24

CALLAWAY, TODD R., JEFFERY A. CARROLL, JOHN D. ARTHINGTON, et al. "Escherichia coli O157:H7 Populations in Ruminants Can Be Reduced by Orange Peel Product Feeding†." Journal of Food Protection 74, no. 11 (2011): 1917–21. http://dx.doi.org/10.4315/0362-028x.jfp-11-234.

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Foodborne pathogenic bacteria such as Escherichia coli O157:H7 are threats to the safety of beef. Citrus peel and dried orange pulp are by-products from citrus juice production that have natural antimicrobial effects and are often incorporated into least-cost ration formulations for beef and dairy cattle. This study was designed to determine if orange peel and pulp affected E. coli O157:H7 populations in vivo. Sheep (n = 24) were fed a cracked corn grain–based diet that was supplemented with a 50-50 mixture of dried orange pellet and fresh orange peel to achieve a final concentration (dry matt

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25

Maierle, Camren L., Andrew R. Weaver, Eugene Felton, Scott P. Greiner, and Scott A. Bowdridge. "366 Impact of Haemonchus Contortus on Feed Intake in Katahdin Sheep Selected for Parasite Resistance." Journal of Animal Science 99, Supplement_3 (2021): 201. http://dx.doi.org/10.1093/jas/skab235.364.

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Abstract Haemonchus contortous (Hc) infections have decreased profitability of flocks worldwide through loss of production efficiency and in severe cases death. Countless research efforts have been made in order to further understand the extensive impact of this gastrointestinal nematode (GIN). Quantifying the impact feeding behavior after Hc infection may prove vital, in understanding internal effect on growing lambs. The aim of this study was to evaluate Katahdin lambs with extensive genetic evaluation for feed efficiency and behavior utilizing a Growsafe™ system. Katahdin ewes from the Virg

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Kyrychenko, I.I., S.I. Pokhil, O.M. Tymchenko, and S.L. Krestetska. "Practical efficiency the new method of staining wet stool smears for the microscopic detection of intestinal protozoan parasites." Annals of Mechnikov Institute, no. 3 (September 7, 2023): 11–19. https://doi.org/10.5281/zenodo.8324695.

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<strong>Introduction.</strong> Until now, intestinal protozoan infections (IPIs) cause a significant socio-economic burden and are a recognized problem for health care in all countries of the world. In the economically developed countries of Europe and Ukraine, IPIs are most often caused by <em>Blastocystis</em> sp. (formerly <em>Blastocystis hominis</em>, the causative agent of blastocystosis), <em>Dientamoeba fragilis</em> (the causative agent of dientamoebiasis), <em>Giardia lamblia</em> (synonymous names - <em>G. intestinalis</em>, <em>G. duodenalis</em>, the causative agent of giardiasis)

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27

Møller, Eva Friis, Christian Marc Andersen Borg, Sigrún H. Jónasdóttir, Suree Satapoomin, Cornelia Jaspers, and Torkel Gissel Nielsen. "Production and fate of copepod fecal pellets across the Southern Indian Ocean." Marine Biology 158, no. 3 (2010): 677–88. http://dx.doi.org/10.1007/s00227-010-1591-5.

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28

Pradhan, Surendra K., Olufunke Cofie, Josiane Nikiema, and Helvi Heinonen-Tanski. "Fecal Sludge Derived Products as Fertilizer for Lettuce Cultivation in Urban Agriculture." Sustainability 11, no. 24 (2019): 7101. http://dx.doi.org/10.3390/su11247101.

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Fecal sludge (FS) contains a significant amount of plant nutrients. FS (treated/untreated) has been used as soil ameliorant in several countries. Use of FS-based compost on lettuce may meet reservations due to possible microbiological contamination. The objectives of this research are: (1) To determine the fertilizer value of different formulations of sawdust and fecal sludge compost (SDFS) pellets, and (2) to compare the effect of these SDFS formulations with poultry manure, commercial compost, mineral fertilizer, and non-fertilization on lettuce cultivation. The SDFS products were made by en

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Rumpel, Sonja, Christina Scholl, Anja Göbel, Rupert Palme, and Esther Mahabir. "Effect of Ground Transportation on Adrenocortical Activity in Prepuberal Female Mice from Five Different Genetic Backgrounds." Animals 9, no. 5 (2019): 239. http://dx.doi.org/10.3390/ani9050239.

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Specific experimental protocols necessitate transportation, a potentially stressful event that could confound results. We determined adrenocortical activity by measuring fecal corticosterone metabolites (FCMs), as a stress marker, in prepuberal (three-week old) female C57BL/6J, C57BL/6NCrl, FVB/NCrl, Crl:CD1(ICR), and BALB/cAnCrl mice. On each transport day, five female cage mates per genetic background were weaned and transported in stable groups via truck from the breeding to the research facility. Fecal pellets were collected on Days 0, 1, and 4. Mice were superovulated for embryo productio

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Guo, Shujin, and Xiaoxia Sun. "Carbon biomass, production rates and export flux of copepods fecal pellets in the Changjiang (Yangtze) River estuary." Journal of Oceanology and Limnology 36, no. 4 (2018): 1244–54. http://dx.doi.org/10.1007/s00343-018-7057-1.

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31

Guo, Shujin, Jun Sun, and Yu Wang. "Production and export of copepods fecal pellets in an eutrophic coastal sea: The Changjiang (Yangtze River) estuary." Estuarine, Coastal and Shelf Science 218 (March 2019): 163–72. http://dx.doi.org/10.1016/j.ecss.2018.12.001.

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Cruz-Guevara, Luis Enrique, Luis Felipe Cruz-Ceballos, and Gladys Marcela Avendaño-Sanchez. "Biogenic production and their sedimentary record: a review." Boletín de Ciencias de la Tierra, no. 55 (February 1, 2024): 11–24. http://dx.doi.org/10.15446/rbct.n55.110363.

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The recognized biogenic production corresponds to corporal materials, and ethological structures (ichnofossils). Ethological structures include bioturbation, bioerosion, and biogenic granule-classification structures. Biogenic materials and structures traditionally include biogenic aggregates (such as fecal pellets or castings and coprolite grapstones); bioturbation structures or ichno-structures (burrows, tracks, trails, and root penetration structures); biogenic granulo-classification or biostratification structures (algal and bacterial stromatolites of graded bedding of biogenic origin); bi

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Chen, Shao-Min, Thibaud Dezutter, David Cote, Catherine Lalande, Evan Edinger, and Owen A. Sherwood. "Sea-ice-associated algae and zooplankton fecal pellets fuel organic particle export in the seasonally ice-covered northwestern Labrador Sea." Biogeosciences 22, no. 11 (2025): 2517–40. https://doi.org/10.5194/bg-22-2517-2025.

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Abstract. Ocean warming and Arctic sea-ice decline are expected to affect the biological pump efficiency by altering the timing, quantity, quality, and composition of export production. However, the origins and composition of sinking organic matter are still generally understudied for the oceans, especially in ice-covered areas. Here, we use the compound-specific isotope analysis (CSIA) of amino acids (AAs) to investigate the sources and composition of exported organic matter from a sediment-trap-derived time series of sinking particles collected at depths of 469 and 915 m at the edge of Sagle

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Thor, P., HG Dam, and DR Rogers. "Fate of organic carbon released from decomposing copepod fecal pellets in relation to bacterial production and ectoenzymatic activity." Aquatic Microbial Ecology 33 (2003): 279–88. http://dx.doi.org/10.3354/ame033279.

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Berezina, Anfisa, Evgeniy Yakushev, Oleg Savchuk, Christian Vogelsang, and André Staalstrom. "Modelling the Influence from Biota and Organic Matter on the Transport Dynamics of Microplastics in the Water Column and Bottom Sediments in the Oslo Fjord." Water 13, no. 19 (2021): 2690. http://dx.doi.org/10.3390/w13192690.

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The fate of microplastics (MP) in seawater is heavily influenced by the biota: the density of MP particles can be changed due to biofouling, which affects sinking, or MP can be digested by zooplankton and transferred into fecal pellets with increased sinking rate. We hypothesize that seasonal production and degradation of organic matter, and corresponding changes in the plankton ecosystem affect the MP capacity for transportation and burying in sediments in different seasons. This is simulated with a coupled hydrodynamical-biogeochemical model that provides a baseline scenario of the seasonal

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Kasamatsu, Nobue, So Kawaguchi, Shuichi Watanabe, Tsuneo Odate, and Mitsuo Fukuchi. "Possible impacts of zooplankton grazing on dimethylsulfide production in the Antarctic Ocean." Canadian Journal of Fisheries and Aquatic Sciences 61, no. 5 (2004): 736–43. http://dx.doi.org/10.1139/f04-072.

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The role of zooplankton grazing on dimethylsulfide (DMS) and dissolved dimethylsulfoniopropionate (DMSPd) production was investigated in the Antarctic Ocean in January and February 2002. Dominant herbivorous macrozooplankton of this region, the Antarctic krill Euphausia superba and the tunicate Salpa thompsoni, were used in shipboard incubation experiments. The concentration of DMSPd + DMS increased in the water during incubation with krill. The production rate was 2.96 ± 2.78 nmol DMSPd + DMS·krill1·h1 (mean ± SD). In addition, the DMSPd + DMS production rate was linearly related to the ing

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Møller, EF, P. Thor, and TG Nielsen. "Production of DOC by Calanus finmarchicus, C. glacialis and C. hyperboreus through sloppy feeding and leakage from fecal pellets." Marine Ecology Progress Series 262 (2003): 185–91. http://dx.doi.org/10.3354/meps262185.

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Ploug, Helle, Morten Hvitfeldt Iversen, Marja Koski, and Erik Theodoor Buitenhuis. "Production, oxygen respiration rates, and sinking velocity of copepod fecal pellets: Direct measurements of ballasting by opal and calcite." Limnology and Oceanography 53, no. 2 (2008): 469–76. http://dx.doi.org/10.4319/lo.2008.53.2.0469.

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von OETTINGEN, J., M. NATH-CHOWDHURY, B. J. WARD, A. C. RODLOFF, M. J. ARROWOOD та M. NDAO. "High-yield amplification ofCryptosporidium parvumin interferon γ receptor knockout mice". Parasitology 135, № 10 (2008): 1151–56. http://dx.doi.org/10.1017/s0031182008004757.

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SUMMARYTo date, large-scale production ofCryptosporidium parvumoocysts has only been achieved by amplification in neonatal calves and sheep. Many laboratories currently depend on supplies from external sources and store oocysts for prolonged periods which results in progressive loss of viability. Six to 8-week-old interferon γ receptor knockout (IFNγR-KO) mice on a C57BL/6 background were inoculated by gavage (2000 oocysts/animal). Fecal pellets were collected daily from 7 days post-infection (p.i.) up to 2 weeks p.i. Intestinal oocyst yield was assessed at days 11, 12 and 14 p.i. by homogeniz

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Rosa, Fernanda, Erminio Trevisi, and Johan S. Osorio. "190 Young Scholar Presentation: Early life fecal microbiome transplantation can enhance growth and performance in neonatal dairy calves." Journal of Animal Science 97, Supplement_2 (2019): 109–10. http://dx.doi.org/10.1093/jas/skz122.194.

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Abstract The gastrointestinal (GI) tract of a neonatal calf undergoes morphological and functional adaptations after birth. The GI tract during this period is influenced by many factors, including bioactive compounds in colostrum. Early colonization of the neonate gut microbiome can fundamentally influence the neonate predisposition to develop immune and metabolic disorders. Fecal microbiome transplantation (FMT) has demonstrated positive effects on the treatment of GI diseases in humans; therefore, we hypothesized that neonatal gut inoculation with a healthy adult gut microbiota via milk repl

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Priyanka Srinivasan, Ganesan Manikka Govinda, Ganeshram Karuppusamy, et al. "Physiological and molecular characterization of novel gut strains isolated from the fecal pellets of Nilgiritragus hylocrius." World Journal of Advanced Research and Reviews 24, no. 1 (2024): 600–608. http://dx.doi.org/10.30574/wjarr.2024.24.1.3006.

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The Nilgiri Tahr are the high-altitude dwelling mountain ungulates, endemic to the Southern Western Ghats of India. These endangered, hoofed mammals inhabit the unique shola grassland biome. These herbivores feed on a diversity of plants including grasses, herbs, shrubs etc. They play an important ecological role in the maintenance of montane grassland ecosystems. Grazing by Nilgiri Tahrs in the montane grasslands supports the hydrology of these areas. In the present study, four novel gut bacterial species were isolated from the fecal pellets of Nilgiri Tahr. The four isolated strains from the

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Priyanka, Srinivasan, Manikka Govinda Ganesan, Karuppusamy Ganeshram, et al. "Physiological and molecular characterization of novel gut strains isolated from the fecal pellets of Nilgiritragus hylocrius." World Journal of Advanced Research and Reviews 24, no. 1 (2024): 600–608. https://doi.org/10.5281/zenodo.15010573.

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The Nilgiri Tahr are the high-altitude dwelling mountain ungulates, endemic to the Southern Western Ghats of India. These endangered, hoofed mammals inhabit the unique shola grassland biome. These herbivores feed on a diversity of plants including grasses, herbs, shrubs etc. They play an important ecological role in the maintenance of montane grassland ecosystems. Grazing by Nilgiri Tahrs in the montane grasslands supports the hydrology of these areas. In the present study, four novel gut bacterial species were isolated from the fecal pellets of Nilgiri Tahr. The four isolated strains fro

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Bair, Susanna R., and Synthia H. Mellon. "Deletion of the Mouse P450c17 Gene Causes Early Embryonic Lethality." Molecular and Cellular Biology 24, no. 12 (2004): 5383–90. http://dx.doi.org/10.1128/mcb.24.12.5383-5390.2004.

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ABSTRACT Dehydroepiandrosterone (DHEA), a 19-carbon precursor of sex steroids, is abundantly produced in the human but not the mouse adrenal. However, mice produce DHEA and DHEA-sulfate (DHEAS) in the fetal brain. DHEA stimulates axonal growth from specific populations of mouse neocortical neurons in vitro, while DHEAS stimulates dendritic growth from those cells. The synthesis of DHEA and sex steroids, but not mouse glucocorticoids and mineralocorticoids, requires P450c17, which catalyzes both 17α-hydroxylase and 17,20-lyase activities. We hypothesized that P450c17-knockout mice would have di

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Alsubait, Ibrahim S., Ibrahim A. Alhidary, and Ahmed A. Al-Haidary. "Effects of Different Levels of Yucca Supplementation on Growth Rates, Metabolic Profiles, Fecal Odor Emissions, and Carcass Traits of Growing Lambs." Animals 13, no. 4 (2023): 755. http://dx.doi.org/10.3390/ani13040755.

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Sixty male Awassi lambs were used to investigate the effects of dietary Yucca schidgera extract (YS) on the production, fecal and urinary odor emissions, and carcass traits of growing lambs fed complete pellets. Lambs were fed either a complete pelleted diet without yucca (control) or supplemented with 300 or 600 mg YS/kg dry matter (DM) during the 84-day experiment. The weights and feed consumption of the lambs were measured weekly. Blood samples were taken on days 1, 28, 58, and 84, and ruminal fluid samples were collected on day 70. On day 90, the odor emissions from feces and urine were me

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Patakiné Várkonyi, Eszter, Gabriella Horváth, Nikoletta Sztán, Éva VÁradi, and Judit Barna. "Vitrification of early avian blastodermal cells with a new type of cryocontainer." Acta Veterinaria Hungarica 60, no. 4 (2012): 501–9. http://dx.doi.org/10.1556/avet.2012.044.

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Although cryopreservation of avian semen is only applicable for singlegene traits, cryopreservation of avian blastodermal cells could facilitate preservation of the entire genome of endangered or rare-breed poultry. Slow freezing methods result in acceptable survival rates; however, there are apparently no reports regarding the use of vitrification. The aim of the study was to establish methods for chicken embryonic cell vitrification, including development of a container which supported cryopreservation of large numbers of cells (to increase the probability of chimera production). Based on a

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Butler, M., and HG Dam. "Production rates and characteristics of fecal pellets of the copepod Acartia tonsa under simulated phytoplankton bloom conditions: implications for vertical fluxes." Marine Ecology Progress Series 114 (1994): 81–91. http://dx.doi.org/10.3354/meps114081.

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Thibault, Hélène, Frédéric Ménard, Jeanne Abitbol-Spangaro, Jean-Christophe Poggiale, and Séverine Martini. "Modeling the contribution of micronekton diel vertical migrations to carbon export in the mesopelagic zone." Biogeosciences 22, no. 9 (2025): 2181–200. https://doi.org/10.5194/bg-22-2181-2025.

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Abstract. Micronekton plays a significant but often overlooked role in carbon transport within the ocean. Using a one-dimensional trait-based model, we simulated the diel vertical migrations (DVMs) of micronekton and their carbon production through respiration, fecal pellets, excretion, and dead bodies. Our model allowed us to explore the biotic and abiotic variables influencing the active transport of carbon in the mesopelagic zone. The functional approach highlighted the importance of size and taxonomy, particularly regarding fishes, crustaceans, and cephalopods as key factors controlling th

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Meisner, Jeffrey, Toni Bransford, Kelsey Miller, et al. "THE SYNTHETIC GLYCAN KB295 OPTIMIZES MICROBIOME COMPOSITION AND FUNCTION IN ULCERATIVE COLITIS – RESULTS FROM A PROOF OF PRINCIPLE HUMAN STUDY." Inflammatory Bowel Diseases 28, Supplement_1 (2022): S70—S71. http://dx.doi.org/10.1093/ibd/izac015.114.

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Abstract The pathogenesis of ulcerative colitis (UC) involves genetic susceptibility, immune-mediated tissue injury and environmental factors including disturbances of the gut microbiota. Nearly all current approved therapies modify host immunity, rather than directly targeting the microbiota. Fecal microbiota transplantation provides encouraging evidence for the therapeutic potential of gut microbiome modulation. Bacteria in the GI tract are ecologically differentiated by their ability to use specific glycans as growth substrates, making glycans a promising and safe alternative to target the

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Karmele, Erik, and Stephen Waggoner. "An NK1.1-expressing regulatory leukocyte in gut-associated lymphoid tissue controls IgA production (MUC8P.733)." Journal of Immunology 194, no. 1_Supplement (2015): 204.13. http://dx.doi.org/10.4049/jimmunol.194.supp.204.13.

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Abstract Immunoglobulin A (IgA) is the most abundant immunoglobulin in the body and is responsible for maintaining homeostasis at mucosal surfaces. Gut microbes elicit continuous germinal center (GC) reactions within gut associated lymphoid tissues (GALT), which in turn contribute to anti-microbial IgA production by promoting maturation and IgA class switching of B cells that populate the gut lamina propria. Dysregulation of IgA levels is a common disease of unknown etiology. Thus, a better understanding of the mechanisms regulating IgA is critical. We previously found that NK1.1+ cells suppre

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Landau, Serge Yan, Ido Isler, Levana Dvash, Benny Shalmon, Amir Arnon, and David Saltz. "Estimating the Suitability for the Reintroduced Arabian Oryx (Oryx leucoryx, Pallas 1777) of Two Desert Environments by NIRS-Aided Fecal Chemistry." Remote Sensing 13, no. 10 (2021): 1876. http://dx.doi.org/10.3390/rs13101876.

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The re-introduction paradigm is that Arabian Oryx (Oryx leucoryx) herds adjust the size of their home ranges depending on the availability of vegetation, which is directly related to rainfall. In Israel, Arabian oryx were released in two hyper-arid sites: the Arava Valley and in the Paran wilderness, belonging to the Sudanese and the Saharo–Arabian biogeographic zones, respectively. While post-release survival was similar in both, reproductive success in the Paran wilderness reintroduction site was extremely low, resulting in an acute decline of the reintroduced population over time. The hypot

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