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Shifts in copepod grazing on varying concentrations of two bioluminescent dinoflagellate species
Title
Shifts in copepod grazing on varying concentrations of two bioluminescent dinoflagellate species.
Creator
Breitlow, Karen A., Florida Atlantic University, Widder, Edith A.
Abstract/Description
Grazing on bioluminescent and nonluminescent prey by the copepod Acartia tonsa was examined to determine the effect dinoflagellate bioluminescence has on copepod feeding preferences and rates. The percentage of cells ml-1 remaining after 30 minutes of copepod grazing on the dinoflagellates Lingulodinium polyedrum and Pyrodinium bahamense in their bioluminescent and nonbioluminescent phases was used to compare results for concentrations of 10, 1,000, and 3,000 cells ml-1. The nonluminescent...
Show moreGrazing on bioluminescent and nonluminescent prey by the copepod Acartia tonsa was examined to determine the effect dinoflagellate bioluminescence has on copepod feeding preferences and rates. The percentage of cells ml-1 remaining after 30 minutes of copepod grazing on the dinoflagellates Lingulodinium polyedrum and Pyrodinium bahamense in their bioluminescent and nonbioluminescent phases was used to compare results for concentrations of 10, 1,000, and 3,000 cells ml-1. The nonluminescent diatom Thalassiosira eccentrica was later offered along with each of the dinoflagellates. When diatoms were offered with P. bahamense, the copepods consumed them in equal amounts regardless of bioluminescence at the lower concentration, while the higher concentration showed decreased grazing with bioluminescence. Nonbioluminescent L. polyedrum was consumed at a high rate for all concentrations, but grazing decreased once they were bioluminescent. Copepods switched to T. eccentrica once the dinoflagellates became bioluminescent, except at 3,000 cells ml-1, at which all grazing was reduced. These results indicate there may be a threshold concentration separating two functions of dinoflagellate bioluminescence.
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Date Issued
2006
PURL
http://purl.flvc.org/fcla/dt/13357
Subject Headings
Dinoflagellates, Marine pharmacology, Bioluminescence, Marine animals--Behavior, Predation (Biology), Adaptation (Biology)
Format
Document (PDF)
Patterns of stimulated bioluminescence in two pyrosomes (Tunicata: Pyrosomatidae)
Title
Patterns of stimulated bioluminescence in two pyrosomes (Tunicata: Pyrosomatidae).
Creator
Bowlby, Mark R., Widder, Edith A., Case, J. F., Harbor Branch Oceanographic Institute
Date Issued
1990
PURL
http://purl.flvc.org/FCLA/DT/3171565
Subject Headings
Bioluminescence, Luminescence --Research, Pyrosoma, Tunicata, Marine organisms
Format
Document (PDF)
The correlation of downwelling irradiance and staggered vertical migration patterns of zooplankton in Wilkinson Basin, Gulf of Maine
Title
The correlation of downwelling irradiance and staggered vertical migration patterns of zooplankton in Wilkinson Basin, Gulf of Maine.
Creator
Frank, Tamara M., Widder, Edith A., Harbor Branch Oceanographic Institute
Date Issued
1997
PURL
http://purl.flvc.org/FCLA/DT/3355151
Subject Headings
Zooplankton--Migration, Vertical distribution (Aqauatic biology)
Format
Document (PDF)
Design and development of an autocalibrating radiometer for deep sea biooptical studies
Title
Design and development of an autocalibrating radiometer for deep sea biooptical studies.
Creator
Widder, Edith A., Caimi, F. M., Taylor, Lawrence D., Tusting, Robert F.
Date Issued
1992
PURL
http://purl.flvc.org/FCLA/DT/3351950
Subject Headings
Radiometers, Radiometers--Design and construction, Underwater light--Measurement, Radiometers--Calibration
Format
Document (PDF)
On the spatial distribution and nearest neighbor distance between particles in the water column determined from in situ holographic measurements
Title
On the spatial distribution and nearest neighbor distance between particles in the water column determined from in situ holographic measurements.
Creator
Malkiel, E., Abras, J. N., Widder, Edith A., Katz, J., Harbor Branch Oceanographic Institute
Date Issued
2005
PURL
http://purl.flvc.org/FCLA/DT/3177162
Subject Headings
Zooplankton, Holography, Plankton sampling, Plankton--Measurement
Format
Document (PDF)
Tracking and mapping underwater bioluminescent displays using snakes
Title
Tracking and mapping underwater bioluminescent displays using snakes.
Creator
Kocak, D. M., Vitoria Lobo, N., Widder, Edith A., Harbor Branch Oceanographic Institute
Date Issued
1996
PURL
http://purl.flvc.org/FCLA/DT/3183691
Subject Headings
Underwater imaging systems, Bioluminescence
Format
Document (PDF)
Correlation of bioluminescence emissions with ventral photophores in the mesopelagic squid Abralia veranyi (Cephalopoda: Enoploteuthidae)
Title
Correlation of bioluminescence emissions with ventral photophores in the mesopelagic squid Abralia veranyi (Cephalopoda: Enoploteuthidae).
Creator
Herring, P. J., Widder, Edith A., Haddock, S. H. D., Harbor Branch Oceanographic Institute
Date Issued
1992
PURL
http://purl.flvc.org/FCLA/DT/3333196
Subject Headings
Squids, Cephalopoda, Enoploteuthidae, Bioluminescence, Photophores
Format
Document (PDF)
Disparate forms of bioluminescence from the amphipods Cyphocaris faurei, Scina crassicornis and S. borealis
Title
Disparate forms of bioluminescence from the amphipods Cyphocaris faurei, Scina crassicornis and S. borealis.
Creator
Bowlby, Mark R., Widder, Edith A., Case, J. F., Harbor Branch Oceanographic Institute
Date Issued
1991
PURL
http://purl.flvc.org/FCLA/DT/3333179
Subject Headings
Amphipoda, Bioluminescence, Gammaridae, Hyperiidae, Photoelectric multipliers
Format
Document (PDF)
Light-emitting suckers in an octopus
Title
Light-emitting suckers in an octopus.
Creator
Johnsen, Sonke, Balser, Elizabeth J., Widder, Edith A., Harbor Branch Oceanographic Institute
Date Issued
1999
PURL
http://purl.flvc.org/FCLA/DT/3183794
Subject Headings
Octopuses, Photophores, Bioluminescence
Format
Document (PDF)
Evidence for behavioral sensitivity to near-UV light in the deep-sea crustacean Systellaspis debilis
Title
Evidence for behavioral sensitivity to near-UV light in the deep-sea crustacean Systellaspis debilis.
Creator
Frank, Tamara M., Widder, Edith A., Harbor Branch Oceanographic Institute
Date Issued
1994
PURL
http://purl.flvc.org/FCLA/DT/3318840
Subject Headings
Crustacea, Ultraviolet radiation--Physiological effect, Crustacea--Physiology, Electrophysiology --Technique, Crustacea--Behavior
Format
Document (PDF)
Bioluminescence of the poecilostomatoid copepod Oncaea conifera
Title
Bioluminescence of the poecilostomatoid copepod Oncaea conifera.
Creator
Herring, P. J., Latz, M. I., Bannister, N. J., Widder, Edith A., Harbor Branch Oceanographic Institute
Date Issued
1993-04-22
PURL
http://purl.flvc.org/FCLA/DT/3350870
Subject Headings
Bioluminescence, Copepoda, Poecilostomatoida
Format
Document (PDF)
In situ observations on three species of largefinned deep-sea squids
Title
In situ observations on three species of largefinned deep-sea squids.
Creator
Vecchione, M., Roper, C. F. E., Widder, Edith A., Frank, Tamara M., Harbor Branch Oceanographic Institute
Date Issued
2002
PURL
http://purl.flvc.org/FCLA/DT/3171653
Subject Headings
Squids, Giant squids, Oceanography --Observations, Oceanographic submersibles, Marine biology
Format
Document (PDF)
Computer vision techniques for quantifying, tracking, and identifying bioluminescent plankton
Title
Computer vision techniques for quantifying, tracking, and identifying bioluminescent plankton.
Creator
Kocak, D. M., da Vitoria Lobo, N., Widder, Edith A., Harbor Branch Oceanographic Institute
Date Issued
1999
PURL
http://purl.flvc.org/FCLA/DT/3183711
Subject Headings
Underwater imaging systems, Computer vision
Format
Document (PDF)
Comparative study of behavioral-sensitivity thresholds to near-UV and blue-green light in deep-sea crustaceans
Title
Comparative study of behavioral-sensitivity thresholds to near-UV and blue-green light in deep-sea crustaceans.
Creator
Frank, Tamara M., Widder, Edith A., Harbor Branch Oceanographic Institute
Date Issued
1994
PURL
http://purl.flvc.org/FCLA/DT/3318881
Subject Headings
Crustacea--Behavior, Ultraviolet radiation, Decapoda (Crustacea), Shrimps, Comparative Study
Format
Document (PDF)
UV light in the deep-sea: In situ measurements of downwelling irradiance in relation to the visual threshold sensitivity of UV-sensitive crustaceans
Title
UV light in the deep-sea: In situ measurements of downwelling irradiance in relation to the visual threshold sensitivity of UV-sensitive crustaceans.
Creator
Frank, Tamara M., Widder, Edith A., Harbor Branch Oceanographic Institute
Date Issued
1996
PURL
http://purl.flvc.org/FCLA/DT/3352933
Subject Headings
Ultraviolet radiation, Crustacea, Deep-sea animals, UV light
Format
Document (PDF)
The speed of an isolume: a shrimp's eye view
Title
The speed of an isolume: a shrimp's eye view.
Creator
Widder, Edith A., Frank, Tamara M., Harbor Branch Oceanographic Institute
Date Issued
2001
PURL
http://purl.flvc.org/FCLA/DT/2795313
Subject Headings
Marine animals --Effect of light on, Shrimps --Research, Bioluminescence, Electroretinography
Format
Document (PDF)
Ship shadow measurements obtained from a manned submersible
Title
Ship shadow measurements obtained from a manned submersible.
Creator
Spinard, R. W., Widder, Edith A., Harbor Branch Oceanographic Institute
Date Issued
1992
PURL
http://purl.flvc.org/FCLA/DT/3180407
Subject Headings
Submersibles, Spectral irradiance, Optical oceanography
Format
Document (PDF)
Bioluminescence in plankton and nekton
Title
Bioluminescence in plankton and nekton.
Creator
Herring, P. J., Widder, Edith A., Harbor Branch Oceanographic Institute
Date Issued
2001
PURL
http://purl.flvc.org/FCLA/DT/3353888
Subject Headings
Bioluminescence, Plankton, Nekton
Format
Document (PDF)
Bioluminescence of deep-sea coronate medusae (Cnidaria: Scyphozoa)
Title
Bioluminescence of deep-sea coronate medusae (Cnidaria: Scyphozoa).
Creator
Herring, P. J., Widder, Edith A., Harbor Branch Oceanographic Institute
Date Issued
2004
PURL
http://purl.flvc.org/FCLA/DT/2796039
Subject Headings
Bioluminescence, Luminescent probes, Scyphozoa, Periphyllus, Organelles
Format
Document (PDF)
Propagation and perception of bioluminescence: factors affecting counterillumination as a cryptic strategy
Title
Propagation and perception of bioluminescence: factors affecting counterillumination as a cryptic strategy.
Creator
Johnsen, Sonke, Widder, Edith A., Mobley, Curtis D., Harbor Branch Oceanographic Institute
Date Issued
2004
PURL
http://purl.flvc.org/FCLA/DT/3171576
Subject Headings
Bioluminescence, Luminescent probes, Deep-sea animals, Photophores, Marine biology
Format
Document (PDF)

Pages