Current Search: Predator prey (x)
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- Title
- The role of prey detection in the selection of prey by pinfish Lagodon rhomboides (Linnaeus).
- Creator
- Luczkovich, Joseph J., Harbor Branch Oceanographic Institute
- Date Issued
- 1988
- PURL
- http://purl.flvc.org/FCLA/DT/3353818
- Subject Headings
- Lagodon rhomboides, Pinfish, Predator & prey, Predation (Biology)
- Format
- Document (PDF)
- Title
- METHODS FOR QUANTIFYING MOLLUSK PREDATION BY DUROPHAGOUS PREDATORS.
- Creator
- Jaworski, Natalia K., McCoy, Michael W., Florida Atlantic University, Department of Environmental Sciences, Charles E. Schmidt College of Science
- Abstract/Description
-
By regulating the abundance of prey populations, predators can directly and indirectly influence food web interactions in ways that influence ecosystem function. Predator functional responses quantify how predator foraging rate changes with prey abundance. Due to the large numbers of individuals needed for these experiments, most studies are conducted on small, abundant taxa. Consequently, we know relatively little about the functional responses of many marine taxa, especially those that are...
Show moreBy regulating the abundance of prey populations, predators can directly and indirectly influence food web interactions in ways that influence ecosystem function. Predator functional responses quantify how predator foraging rate changes with prey abundance. Due to the large numbers of individuals needed for these experiments, most studies are conducted on small, abundant taxa. Consequently, we know relatively little about the functional responses of many marine taxa, especially those that are large and highly mobile. We present a novel method for studying predator foraging behaviors by integrating two innovative approaches: passive acoustics to document the occurrence of underwater predation events in concert with a recently developed statistical method that uses the times between predation events to estimate functional response parameters. We demonstrate and expand on the application of these methods by quantifying the shape of the predator functional responses for whitespotted eagle rays (Aetobatus narinari) preying on hard clams (Mercenaria mercenaria).
Show less - Date Issued
- 2023
- PURL
- http://purl.flvc.org/fau/fd/FA00014252
- Subject Headings
- Predator-prey interactions, Predation (Biology), Mollusks, Ecology
- Format
- Document (PDF)
- Title
- Aggregations of myctophid fishes with other pelagic fauna.
- Creator
- Auster, P. J., Griswold, C. A., Youngbluth, Marsh J., Bailey, T. G.
- Date Issued
- 1992
- PURL
- http://purl.flvc.org/FCLA/DT/3333202
- Subject Headings
- Myctophidae, Submersibles, Predator and prey, Fishes--Behavior
- Format
- Document (PDF)
- Title
- Community structure ofthe macrobenthos associated with seagrass of the Indian River estuary, Florida.
- Creator
- Young, David K., Young, Martha W., Harbor Branch Oceanographic Institute
- Date Issued
- 1977
- PURL
- http://purl.flvc.org/fau/fd/FA00007287
- Subject Headings
- Indian River (Fla. : Lagoon), Benthos, Seagrasses--Ecology, Predator & prey
- Format
- Document (PDF)
- Title
- The subtleties of camouflage and dietary preference of the decorator crab, Microphrys bicornutus Latreille (Decapoda: Brachyura).
- Creator
- Kilar, J. A., Lou, R. M., Harbor Branch Oceanographic Institute
- Date Issued
- 1986
- PURL
- http://purl.flvc.org/FCLA/DT/3353777
- Subject Headings
- Decapoda (Crustacea), Brachyura, Predator & prey, Algae, Crabs--Behavior, Camouflage (Biology), Animals--Food
- Format
- Document (PDF)
- Title
- Wading Bird Foraging and Prey Concentration in the Ridge and Slough Landscape of the Everglades.
- Creator
- Binkley, Erin, Dorn, Nathan, Florida Atlantic University, Charles E. Schmidt College of Science, Center for Environmental Studies
- Abstract/Description
-
The hydrological and topographical variation of wetlands can affect the behavior, population growth, and local densities of aquatic species, which in turn can drive the behavior and density dynamics of gleaning predators. Prey availability, primarily determined by prey density and water depth in wetlands, is an important limiting factor for nesting wading bird populations, top predators in the south Florida Everglades. The Everglades is able to support large colonies of nesting wading birds...
Show moreThe hydrological and topographical variation of wetlands can affect the behavior, population growth, and local densities of aquatic species, which in turn can drive the behavior and density dynamics of gleaning predators. Prey availability, primarily determined by prey density and water depth in wetlands, is an important limiting factor for nesting wading bird populations, top predators in the south Florida Everglades. The Everglades is able to support large colonies of nesting wading birds because of the microtopographic variation in the landscape. Some types of prey concentrate in flat, shallow sloughs or become trapped in isolated pools as they move down from higher elevation ridges with receding water levels. Manipulations to the hydrology and landscape of the Everglades has negatively impacted nesting wading bird populations in the past, and may continue to be detrimental by allowing flat, shallow sloughs to be intersected by deep canals, a potential refuge for wading bird prey. In addition, the subtle elevation differences between the ridge and slough landscape may be an important mechanism for increasing slough crayfish (Procambarus fallax) prey availability for the most abundant and seemingly depth-sensitive Everglades wading bird, the White Ibis (Eudocimus albus). I implemented a 2-year experimental study in four replicated manmade wetlands with controlled water recession rates in order to determine the effects of proximate deep water (akin to canals) on fish prey concentrations in the sloughs, as water levels receded similarly to a natural Everglades dry season. I also calculated average daily wading bird densities with game cameras (Reconyx PC800 Hyperfire) using timelapse imagery over 60 days to determine when and where wading birds responded to changing prey concentrations. I completed an additional observational study on White Ibis and slough crayfish prey from the first year of data (2017). Crayfish make up the majority of the diet for nesting White Ibis, and literature has suggested crayfish are most abundant at slough depths much deeper than previously proposed foraging depth limitations for White Ibis. This study specifically compared recent determinations about crayfish movement dynamics in the ridge and slough system with White Ibis foraging behavior and depth limits. Results from the first experimental study suggest that canals might be an attractive refuge for relatively large prey fishes (> 3 cm SL) in sloughs, but it is uncertain if the fencing blocked all prey fish movement. The second observational study determined White Ibis foraging activity was primarily driven by a down-gradient crayfish flux from ridge to slough, with the majority of foraging activity occurring at much deeper slough depths than previously suggested water depth limitations for White Ibis. Results from both of these studies support the importance of preserving the ridgeslough landscape of the Everglades to sustain high prey availability for wading birds.
Show less - Date Issued
- 2018
- PURL
- http://purl.flvc.org/fau/fd/FA00013124
- Subject Headings
- Wading birds, White ibis, Everglades (Fla)--Environmental conditions, Foraging behavior in animals, Predator & prey
- Format
- Document (PDF)