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(101 - 106 of 106)
Pages
- Title
- Egg and larval development of laboratory-reared sergeant major, Abudefduf saxatilis (Pisces, Pomacentridae).
- Creator
- Alshuth, S. R., Tucker, John W., Jr., Hateley, J., Harbor Branch Oceanographic Institute
- Date Issued
- 1998
- PURL
- http://purl.flvc.org/FCLA/DT/3340504
- Subject Headings
- Abudefduf, Pomacentridae, Fishes--Larvae, Fishes--Eggs, Fishes--Embryology
- Format
- Document (PDF)
- Title
- Effects of summer upwelling on the abundance and vertical distribution of fish and crustacean larvae off central Florida’s Atlantic coast.
- Creator
- Pitts, Patrick A., Harbor Branch Oceanographic Institute
- Date Issued
- 1998
- PURL
- http://purl.flvc.org/FCLA/DT/3331933
- Subject Headings
- Vertical distribution (Aquatic biology), Fishes--Vertical distribution, Crustacea--Larvae, Atlantic Coast (Fla.)
- Format
- Document (PDF)
- Title
- Computer simulation of larval transport through tidal channels: Role of vertical migration.
- Creator
- Smith, Ned P., Stoner, Allan W.
- Date Issued
- 1993
- PURL
- http://purl.flvc.org/FCLA/DT/3174491
- Subject Headings
- Larvae--Dispersal, Vertical distribution (Aquatic biology), Estuaries, Mexico, Gulf of, Bahamas
- Format
- Document (PDF)
- Title
- Feeding habits of the sand shrimp Crangon septemspinosa.
- Creator
- Wilcox, J. Ross, Jeffries, H. Perry, Harbor Branch Oceanographic Institute
- Date Issued
- 1974
- PURL
- http://purl.flvc.org/FCLA/DT/3171552
- Subject Headings
- Shrimps, Crangon crangon, Shrimp culture, Shrimps --Feeding and feeds, Decapoda (Crustacea) --Larvae
- Format
- Document (PDF)
- Title
- HYPOXIA CHALLENGES IN ESTUARINE ENVIRONMENTS: EFFECTS ON EARLY FISH DEVELOPMENT AND LIPID UTILIZATION.
- Creator
- Kostelnik, Magaleate, Mejri, Sahar, Florida Atlantic University, Department of Marine Science and Oceanography, Charles E. Schmidt College of Science
- Abstract/Description
-
The distribution and intensity of hypoxia (low dissolved oxygen, DO) is increasing due to eutrophication and algal blooms in estuaries like those in the Gulf of Mexico and the Indian River Lagoon. The objective of this study is to determine how low DO affects the development and lipid utilization of the Florida Pompano (Trachinotus carolinus) and Red Drum (Sciaenops ocellatus). Fertilized eggs were incubated in two DO hypoxia treatments: severe (20% DO saturation, 1.6 mg/L), moderate (50% DO...
Show moreThe distribution and intensity of hypoxia (low dissolved oxygen, DO) is increasing due to eutrophication and algal blooms in estuaries like those in the Gulf of Mexico and the Indian River Lagoon. The objective of this study is to determine how low DO affects the development and lipid utilization of the Florida Pompano (Trachinotus carolinus) and Red Drum (Sciaenops ocellatus). Fertilized eggs were incubated in two DO hypoxia treatments: severe (20% DO saturation, 1.6 mg/L), moderate (50% DO saturation, 3.9 mg/L), and normoxia (100% DO saturation, 7.6 mg/L). Eggs and larvae were sampled at 24-hours post-fertilization to assess hatch survival, larval development, and fatty acid (FA) lipids utilization. Results suggest hypoxia significantly impacts Florida Pompano development, with polar FAs most affected, while Red Drum shows greater tolerance to low DO. These findings provide insight into early fish larval stages to improve conservation and management strategies for their recruitment.
Show less - Date Issued
- 2024
- PURL
- http://purl.flvc.org/fau/fd/FA00014455
- Subject Headings
- Hypoxia, Florida pompano, Red drum, Fishes--Larvae, Fishes--Development
- Format
- Document (PDF)
- Title
- Toxicity and availability of copper and zinc to queen conch: implications for larval recruitment in the Florida Keys.
- Creator
- Garr, Amber L., Charles E. Schmidt College of Science, Department of Biological Sciences
- Abstract/Description
-
The presence of heavy metals and other pollutants is detrimental to marine ecosystems. The queen conch, once an important fisheries species in the Florida Keys, has not sufficiently recovered after a 25-year fishery closure. Research has shown high levels of copper and zinc in the gonads and digestive glands of adult conch found in the nearshore waters. Four sites relevant to queen conch larval recruitment were tested in 2010 for the presence of copper and zinc in the water, phytoplankton,...
Show moreThe presence of heavy metals and other pollutants is detrimental to marine ecosystems. The queen conch, once an important fisheries species in the Florida Keys, has not sufficiently recovered after a 25-year fishery closure. Research has shown high levels of copper and zinc in the gonads and digestive glands of adult conch found in the nearshore waters. Four sites relevant to queen conch larval recruitment were tested in 2010 for the presence of copper and zinc in the water, phytoplankton, sediment, and seagrass epiphytes over seven months. Both metals were detected in all sample types and no seasonal or geographical differences were detected. Surface water concentrations from the field were used to conduct acute and chronic toxicity tests on various ages of queen conch larvae and their phytoplankton food source. When zinc concentrations (0-40 (So(Bg/L) similar to those measured in situ were used, there was no significant impact on conch larval survival although some velar lobe de velopment was impaired. However, field concentrations of copper (0-15 (So(Bg/L), which often surpassed water quality standards, negatively impacted growth, survival, and development of the larvae. Chronic exposure to copper, through the water and food, disrupted the metamorphic success of competent larvae and decreased post-metamorphosis survival. Exposure to copper at later life stages increased mortality, suggesting that heavy metals have a negative effect on larval recruitment in localized areas of the Florida Keys. Structural equation modeling revealed that copper and zinc are moving through the systems differently and are best represented by two different models.
Show less - Date Issued
- 2012
- PURL
- http://purl.flvc.org/FAU/3342102
- Subject Headings
- Gastropoda, Habitat, Queen conch, Conservation, Marine invertebrates, Larvae, Trace elements, Environmental aspects
- Format
- Document (PDF)
