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Showing 1 to 20 of 21 for “"feeding preferences"”.
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Assessing Feeding Preferences and Spatial Patterns of Lagodon rhomboides Linnaeus
… </em>as a potential epiphytic grazer and assess feeding preferences during a transitional stage in the ontogenetic diet shift exhibited by these fish. Since pinfish are abundant in seagrass meadows in the northern Gulf of Mexico, their dietary preferences have the potential to greatly impact …
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Feeding preferences of Tripneustes gratilla Linnaeus Echinodermata Echinodea and the prospect for sea urchin aquaculture in South Africa
… are prospects for the industry in South Africa. Feeding preferences of the sea urchin Tripneustes gratilla were tested by two different methods; a touch-preference test and a 48-hour consumption test. A touchpreference is established when the sea urchins' lantern teeth touched an algal species. …
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Identifying nutritive, physical and volatile characteristics of oaten and lucerne hay that affect the short-term feeding preferences of lactating Holstein Friesian cows and Thoroughbred horses.
Feeding behaviour is controlled by the integration of both perceived cues from the plant and postingestive signals received by the animal. In general practice, dairy cattle are presented with a variety of feedstuffs throughout each day, in addition to changing feedstuffs over time. In the …
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Birds as a dispersal agent for Acacia cyclops
… of A. cyclops; 2) determine any selective feeding preferences for A. cyclops seeds, using Cape Turtle doves (Streptopelia capicola); 3) estimate the calorific utilization by Cape Turtle doves of A. cyclops seeds; and finally, 4) assess any effects on the germination and viability of the A. …
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Aspects of the biology of the receptacle weevil, Rhinocyllus conicus (Froehlich) relating to its role as a biocontrol agent of nodding thistle, Carduus nutans L.
… on insect behaviour were recorded as were the feeding preferences of adult weevils.
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Effects of Fluid Properties on the Dynamics of Mosquitoes' Ingestion Pumps
This thesis explores the feeding structures of insects, which have evolved over millennia to utilize a variety of dietary sources. It examines the mouthparts of insects feeding on plants, other bugs, or vertebrate blood, analyzing how these structures influence or limit their diet. Focusing …
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Mammal Damage and Movements of Deer Mice in South Dakota Shelterbelts
… shelterbelts in Brookings County, South Dakota. Feeding preferences of deer mice (Peromyscus maniculatus) prairie voles (Microtus ochragaster), and cottontail rabbits (Sylvilagus floridanus) was conducted on 5 woody species that colIIIllonly occur in South Dakota shelterbelts. Movementsof deer …
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Diet and Feeding Behavior of Juvenile Alligator Snapping Turtles (Macrochelys Temminckii) in Eastern Oklahoma
… on other aquatic turtles is not known and feeding behavior of juvenile M. temminckii is not understood. The following studies were conducted to 1) compare the diet of captive-reared juvenile M. temminckii to that of wild juveniles and investigate the diet overlap of juvenile M. temminckii …
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Trophic interactions between larval gizzard shad and resident zooplanktivores in Claytor Lake, Virginia
… All species of limnetic larvae examined showed feeding preferences for Diaphanosoma and copepod nauplii. Crustacean zooplankton densities did not respond negatively to peak larval fish abundances, and never dropped below 250-400 organisms/L. In Claytor Lake, the impact of trophic competition …
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Grasshopper species complexes of forage crops in the piedmont region of Virginia
… in the complex studied. With species grouped by feeding preferences (quilds), sweepnetting sampled head (inflorescence) feeders above mixed-forb feeders, and mixed-forb feeders above grass feeders. Compared with other Acrididae, M.f. femurrubrum was over-represented in sweepnet samples above the …
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The Ecology Of Host-Seeking Mosquitoes Within The Red River Valley Of Central North Dakota
… assays multiple times to determine the host feeding preferences and parasitic infection status of the host. The first round of PCR assays determined the host species from which the blood originated (e.g., deer, dog, human, etc.). Analyzing the host composition of many mosquito blood meals …
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Conservation of barbel (Barbus barbus) in the River Great Ouse
… used to capture 0+ to 3+ barbel. Habitat and feeding preferences were then evaluated.It was found that temperature and flow impacted movement, individuals moved through the entire river stretch, despite the presence of a weir that was previously thought of as impassable. Variations in sediment …
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Linking plant traits and herbivory in grassland biodiversity-ecosystem functioning research
… plant growth and defense strategies, herbivore feeding preferences, and primary production in terrestrial plant communities. I empirically tested these proposed linkages in laboratory and field experiments carried out in the understudied grasslands of Inner Mongolia, China. I found that a …
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Attractant properties of chemical constituents of the green macroalga Ulva and their response effects on the commercially important sea urchin Tripneustes gratilla
… is being carried out to understand sea urchin feeding preferences. Feeding preference is related to the attractiveness/palatability of the feed, which is thought to be based on its chemical composition. Since an unpalatable feed will result in the poor quality of the organism, evaluating the …
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The Use of Geographic Information Systems and Ecological Niche Modeling to Map Transmission Risk for Visceral Leishmaniasis in Bahia, Brazil
… chain reaction (PCR) to determine host feeding preferences and natural infection by Leishmania spp. The sand flies preferably fed on chickens and humans. No natural Leishmania spp. infections were detected. NDVI was the most influencing factor in the ENM model (99.4% contribution). …
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Aphids as vectors of peanut mottle virus
… and with the Florigiant variety of peanuts. In feeding preference tests, all three aphid species tested showed a preference for settling onto a host, regardless of the host species used, to wandering at random in the feeding arena and not feeding on any host plant. A. craccivora showed the …
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Tropicalisation of temperate seagrass meadows in Western Australia: Predicting the impact of tropical herbivorous fishes on temperate seagrass meadows
… and 2016/17, as well as in situ and mesocosm feeding preference experiments, this study attempted to estimate the grazing rates and impact that the growing abundance of S. fuscescens may have in temperate seagrass meadows. Shifts in the grazing rates on seagrass between 2001 and 2016/17 were …
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Distributional relationships among subtidal algae, sea urchins and reef fish in northeastern New Zealand
… vegetated than in the unvegetated site, and the feeding rate in the vegetated site was less than 50% that in the unvegetated site. I speculate that future effects on fish activity of the invasion of C. flexuosum into a habitat which previously lacked macroalgal vegetation may depend on changes in …
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