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Title: The correlation between liver dry matter and liver lipid in cultured juvenile red drum fed various diets.
Creator: Tucker, John W., Jr., Lellis, W. A., Vermeer, Gregory K., Harbor Branch Oceanographic Institute
Date Issued: 2001
PURL: http://purl.flvc.org/fau/fd/FA00007276
Subject Headings: Red drum, Sciaenops ocellatus, Liver, Lipids, Fishes--Feeding and feeds
Format: Document (PDF)

Title: Community studies in seagrass meadows: A comparison of two methods for sampling macroinvertebrates and fishes.
Creator: Leber, Kenneth M., Greening, Holly S., Harbor Branch Oceanographic Institute
Date Issued: 1986
PURL: http://purl.flvc.org/FCLA/DT/3336787
Subject Headings: Seagrasses--Ecology, Sampling--Technique, Invertebrates, Fishes, Scrapers (Tools), Trawls and trawling
Format: Document (PDF)

Title: Declining coral health and fish diversity in the South Pacific.
Creator: McCurdy, Paul., Harriet L. Wilkes Honors College
Abstract/Description: Coral reefs harbor ~1-9 million species, including 30% of all marine fish species. Reef health worldwide is declining due to many factors: e.g. pollution, sedimentation, dynamite fishing, and global warming. Working with the Planetary Coral Reef Foundation and the crew aboard the R/V Heraclitus, I examined coral health and fish diversity in the Solomon Islands, Melanesia. In 2006, I surveyed coral and fish on Sagharughombe reef, Solomon Islands using SCUBA and compared the results with...
Show moreCoral reefs harbor ~1-9 million species, including 30% of all marine fish species. Reef health worldwide is declining due to many factors: e.g. pollution, sedimentation, dynamite fishing, and global warming. Working with the Planetary Coral Reef Foundation and the crew aboard the R/V Heraclitus, I examined coral health and fish diversity in the Solomon Islands, Melanesia. In 2006, I surveyed coral and fish on Sagharughombe reef, Solomon Islands using SCUBA and compared the results with surveys done in 2000 and 2002. Coral surveys indicated a significant decline in health over the six-year period. Fish surveys found no clear trend in species abundances and species richness, but a significant decline in species diversity over the years. The decline in coral health we observed may have contributed to diminished fish diversity. To protect marine biodiversity, coral reefs must be better protected and declines in coral health must be halted.
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Date Issued: 2007
PURL: http://purl.flvc.org/FAU/11615
Subject Headings: Coral reef ecology, Fishes, Ecology
Format: Document (PDF)

Title: Fishes of the New England Seamounts.
Creator: Canache, Christian., Harriet L. Wilkes Honors College
Abstract/Description: Prior to 2000, very little was known about fish biodiversity on the New England Seamount chain. In late 2000, 115 fish species were found on Bear Seamount by the NOAA R/V "Delaware II." Woods Hole Oceanographic Institution conducted two cruises to explore the New England Seamount chain in 2003. This study assessed fish species throughout Alvin submersible dives during these 2003 cruises. Digital video footage was converted to still photographs and video clips using the Macintosh movie program...
Show morePrior to 2000, very little was known about fish biodiversity on the New England Seamount chain. In late 2000, 115 fish species were found on Bear Seamount by the NOAA R/V "Delaware II." Woods Hole Oceanographic Institution conducted two cruises to explore the New England Seamount chain in 2003. This study assessed fish species throughout Alvin submersible dives during these 2003 cruises. Digital video footage was converted to still photographs and video clips using the Macintosh movie program iMovie. Fishes were identified to the lowest possible taxonomic level using keys and literature. The habitat, depth and behavior of observed fishes were compared to the literature available. Geographical distributions of the species were considered. I assessed substrate preference by building a chart that reflects the different sediment regimes that fishes were found on. In all I identified 317 individuals representing 33 different taxa, including two species with new habitat range information Neocyttus helgae and Lepidion sp.
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Date Issued: 2007
PURL: http://purl.flvc.org/FAU/41003
Subject Headings: Seamounts, Ecology, Biodiversity conservation, Fishes, Conservation
Format: Document (PDF)

Title: Fishes of Savannas Preserve State Park.
Creator: McKee, Kristy., Harriet L. Wilkes Honors College
Abstract/Description: Freshwater marshes are a harsh wetland ecosystem classified by seasonal water level fluctuation. Dry down periods are common in some marshes, making life difficult for fish and other aquatic organisms. The goal of this study was to compile an updated species list of fishes inhabiting the freshwater marsh system within Savannas Preserve State Park. Twenty-three fish species were collected between August 2005 and May 2007. This survey, along with past collections, and the current species list...
Show moreFreshwater marshes are a harsh wetland ecosystem classified by seasonal water level fluctuation. Dry down periods are common in some marshes, making life difficult for fish and other aquatic organisms. The goal of this study was to compile an updated species list of fishes inhabiting the freshwater marsh system within Savannas Preserve State Park. Twenty-three fish species were collected between August 2005 and May 2007. This survey, along with past collections, and the current species list in the park's management plan were used to make a new proposed species list. Three species of nonnative fishes were observed during the study, the first report of exotic fishes in the park. It is believed that abnormally high water levels for an extended period may have allowed the water in neighboring canals to connect to the marsh system and, as a result, new species were able become introduced in the park.
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Date Issued: 2007
PURL: http://purl.flvc.org/FAU/40970
Subject Headings: Savannas Preserve State Park (Fla.), Ecology, Fishes, Identification, Population biology
Format: Document (PDF)

Title: Characterization of Elasmobranch Community Dynamics in the Indian River Lagoon.
Creator: Roskar, Amelia Grace, Ajemian, Matthew, Florida Atlantic University, Charles E. Schmidt College of Science, Depament of Biological Sciences
Abstract/Description: Florida’s Indian River Lagoon (IRL) has experienced myriad anthropogenic impacts and knowledge on elasmobranchs (sharks and rays) in the southern IRL is lacking. A fishery independent survey (longline/gillnet) was implemented to 1) assess the effects of bait type [striped mullet (Mugil cephalus) versus Atlantic mackerel (Scomber scombrus)] and mesh size (15.2 cm versus 20.3 cm stretch mesh) on elasmobranch species composition, catch-per-unit effort, and size distributions and 2) characterize...
Show moreFlorida’s Indian River Lagoon (IRL) has experienced myriad anthropogenic impacts and knowledge on elasmobranchs (sharks and rays) in the southern IRL is lacking. A fishery independent survey (longline/gillnet) was implemented to 1) assess the effects of bait type [striped mullet (Mugil cephalus) versus Atlantic mackerel (Scomber scombrus)] and mesh size (15.2 cm versus 20.3 cm stretch mesh) on elasmobranch species composition, catch-per-unit effort, and size distributions and 2) characterize elasmobranch abundance and distribution. From 2016 - 2018, 630 individuals (16 species) were captured, more often in the gillnet than the longline. Catch-per-unit-effort was significantly higher with mullet than mackerel. Species composition differed among gears. Although dependent on gear, there was evidence of seasonal and spatial patterns in abundance and species composition. This study provides the first baseline abundance indices for many elasmobranchs in the IRL and develops the capacity to understand how elasmobranchs may respond to changes in this highly modified estuary.
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Date Issued: 2019
PURL: http://purl.flvc.org/fau/fd/FA00013256
Subject Headings: Indian River (Fla : Lagoon)--Environmental conditions, Elasmobranchs, Sharks--Ecology, Rays (Fishes)--Ecology
Format: Document (PDF)

Title: AN INVESTIGATION INTO THE NURSERY EFFECT OF SELECT REEF FISHES ALONG THE SOUTHERN FLORIDA COAST.
Creator: Pressly, Andrew, Hindle, Tobin, Florida Atlantic University, Department of Geosciences, Charles E. Schmidt College of Science
Abstract/Description: The nursery effect is a process where juvenile fish utilize coastal habitats to help them survive before moving to their adult habitat. This process establishes an important link between marine ecosystems. This study examines the nursery effect and nursery habitat utilization in the Indian River Lagoon and Florida Bay systems, and the coral reefs adjacent to them. Quantitative and spatial techniques were utilized to identify patterns of presence and abundance and the size structure of select...
Show moreThe nursery effect is a process where juvenile fish utilize coastal habitats to help them survive before moving to their adult habitat. This process establishes an important link between marine ecosystems. This study examines the nursery effect and nursery habitat utilization in the Indian River Lagoon and Florida Bay systems, and the coral reefs adjacent to them. Quantitative and spatial techniques were utilized to identify patterns of presence and abundance and the size structure of select fish species. Spatial analyses were also used to investigate distribution patterns. Findings from this study suggest that several species utilize to a high degree the Indian River Lagoon and Florida Bay as nurseries. Furthermore, the abundance of adults on coral reefs is strongly connected to the presence of nurseries. This study has implications in fisheries management such as locating where juveniles of species develop. With such knowledge, better management plans could be implemented to ensure healthy fish stocks.
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Date Issued: 2020
PURL: http://purl.flvc.org/fau/fd/FA00013490
Subject Headings: Reef fishes, Florida Bay (Fla ), Indian River (Fla : Lagoon), Fisheries management, Marine nurseries
Format: Document (PDF)

Title: Pelvic fin locomotion in batoids.
Creator: Macesic, Laura Jane., Charles E. Schmidt College of Science, Department of Biological Sciences
Abstract/Description: Although most batoids (skates and rays) are benthic, only the skates (Rajidae) have been described as performing benthic locomotion, termed 'punting'. While keeping the rest of the body motionless, the skate's specialized pelvic fins are planted into the substrate and then retracted caudally, which thrusts the body forward. This may be advantageous for locating and feeding on prey, avoiding predators, and reducing energetic costs. By integrating kinematic, musculoskeletal, material properties...
Show moreAlthough most batoids (skates and rays) are benthic, only the skates (Rajidae) have been described as performing benthic locomotion, termed 'punting'. While keeping the rest of the body motionless, the skate's specialized pelvic fins are planted into the substrate and then retracted caudally, which thrusts the body forward. This may be advantageous for locating and feeding on prey, avoiding predators, and reducing energetic costs. By integrating kinematic, musculoskeletal, material properties, and compositional analyses across a range of morphologically and phylogenetically diverse batoids, this dissertation (i) demonstrates that punting is not confined to the skates, and (ii) provides reliable anatomical and mechanical predictors of punting ability. Batoids in this study performed true punting (employing only pelvic fins), or augmented punting (employing pectoral and pelvic fins). Despite the additional thrust from the pectoral fins, augmented punters failed to exceed the punting c apabilities of the true punters. True punters' pelvic fins had greater surface area and more specialized and robust musculature compared to the augmented punters' fins. The flexural stiffness of the main skeletal element used in punting, the propterygium, correlated with punting ability (3.37 x 10-5 - 1.80 x 10-4 Nm2). Variation was due to differences in mineral content (24.4-48-9% dry mass), and thus, material stiffness (140-2533 MPa), and second moment of area. The propterygium's radius-to-thickness ratio (mean = 5.52 +-0.441 SE) indicated that the propterygium would support true and augmented punters, but not non-punters, in an aquatic environment. All propterygia would fail on land. Geometric and linear morphometric analyses of 61 batoid pelvic girdles demonstrated that pelvic girdle shape can predict punting and swimming ability and taxonomic attribution to Order., Characteristics of true punters' pelvic girdles, such as laterally facing fin articulations, large surface area formuscle attachment, and tall lateral pelvic processes are similar to characteristics of early sprawled-gait tetrapods' pelvic girdles. This dissertation demonstrates that punting is common in batoids, illustrates the convergent evolution of true punter and early tetrapod pelvic anatomy, and gives possible explanations for the restriction of elasmobranchs to aquatic habitats.
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Date Issued: 2011
PURL: http://purl.flvc.org/FAU/3171678
Subject Headings: Sharks, Ecology, Fins, Anatomy, Adaptation (Biology), Aquatic animals, Physiology, Fishes, Locomotion
Format: Document (PDF)

Title: Fishes of the Kissimmee River floodplain, prior to proposed restoration.
Creator: Overdorf, Tobin Rogers., Florida Atlantic University, Courtenay, Walter R. Jr.
Abstract/Description: The density and diversity of fishes of the Kissimmee River Floodplain have been affected by channelization of the Kissimmee River. Reduced hydrology, human encroachment, and overall loss of habitat appear to have reduced the level of fish diversity and density within the floodplain of the Kissimmee River. This landmark study collected vegetative habitat and fish population density and diversity data within the altered floodplain for baseline information prior to initiation of river...
Show moreThe density and diversity of fishes of the Kissimmee River Floodplain have been affected by channelization of the Kissimmee River. Reduced hydrology, human encroachment, and overall loss of habitat appear to have reduced the level of fish diversity and density within the floodplain of the Kissimmee River. This landmark study collected vegetative habitat and fish population density and diversity data within the altered floodplain for baseline information prior to initiation of river restoration activities in the form of dechannelization. Secondary studies included poecillid fecundity data as well as a localized rotenone study within the previously restored am of Pool B. Overall results of the study indicate that post restoration floodplain fish collection studies should reveal increased fish density and diversity within the expanded and restored floodplain habitat.
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Date Issued: 1999
PURL: http://purl.flvc.org/fcla/dt/15736
Subject Headings: Fishes--Florida--Kissimmee River Watershed, Restoration ecology--Florida--Kissimmee River Watershed
Format: Document (PDF)

Title: TIMELINE OF NUTRIENT INCORPORATION FROM BROODSTOCK DIET TO EGG IN CALIFORNIA YELLOWTAIL, SERIOLA DORSALIS.
Creator: Chin, Li Sun, Mejri, Sahar, Florida Atlantic University, Department of Marine Science and Oceanography, Charles E. Schmidt College of Science
Abstract/Description: Existing brood fish research has ascertained that eggs are heavily influenced by broodstock diet but there is no information regarding this timeline of nutritional incorporation. The objective of this study is to determine duration of nutritional incorporation from diet to eggs through fatty acids. Nine California Yellowtail (Seriola dorsalis) broodstock were fed alternating diets of commercial pellets (Vitalis PRIMA: Skretting) and cutbait. Biochemical and biometric data from spawns were...
Show moreExisting brood fish research has ascertained that eggs are heavily influenced by broodstock diet but there is no information regarding this timeline of nutritional incorporation. The objective of this study is to determine duration of nutritional incorporation from diet to eggs through fatty acids. Nine California Yellowtail (Seriola dorsalis) broodstock were fed alternating diets of commercial pellets (Vitalis PRIMA: Skretting) and cutbait. Biochemical and biometric data from spawns were collected and analyzed for differences and similarities throughout the alternating diets. Eggs were observed to selectively incorporate higher sources of linolenic and linoleic acid from the pelleted diet, and eicosapentaenoic acid from the cutbait diet. Interestingly, results showed overall fatty acids from both diets were fully incorporated by eggs within 9 days following the diet switch. These findings provided new insight towards the selective incorporation of nutrients and will open new doors for future broodstock nutrition research.
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Date Issued: 2023
PURL: http://purl.flvc.org/fau/fd/FA00014327
Subject Headings: Seriola dorsalis, Yellowtail, Aquaculture, Fishes—Feeding and feeds, Brood stock assessment
Format: Document (PDF)

Title: South Atlantic MPAs and deepwater coral HAPCs: Characterization of fish communities, benthic habitat, and benthic macrobiota. Final Report for 2012-2014 NOAA Cruises. A NOAA CIOERT Report.
Creator: Harter, Stacey, Reed, John K., Farrington, Stephanie, David, Andrew, Harbor Branch Oceanographic Institute
Date Issued: 2015
PURL: http://purl.flvc.org/fau/fd/FA00007516
Subject Headings: Marine parks and reserves, Deep sea corals, Benthos Habitat, Fish communities, South Atlantic Fishery Management Council (U.S.)
Format: Document (PDF)

Title: Distribution of deep-water commercial fisheries species-golden crab, tilefish, royal red shrimp-in deep-water habitats off Eastern Florida from submersible and ROV dives.
Creator: Reed, John K., Farrington, Stephanie
Date Issued: 2010
PURL: http://purl.flvc.org/FCLA/DT/3351178
Subject Headings: South Atlantic Fishery Management Council (U.S.), Fisheries--Florida, Tilefish, Crabs, Shrimps, Fishes--Geographical distribution
Format: Document (PDF)

Title: Acoustic Tonal and Vector Properties of Red Hind Grouper Vocalizationd.
Creator: Matthews, Cameron Anthony, Beaujean, Pierre-Philippe, Florida Atlantic University, College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
Abstract/Description: Vertebrates are the most prodigious vocalizing animals in existence, and the most diverse methods of acoustic communication among vertebrates can be found in the ocean. Relatively many teleost fish are gifted with the ability to communicate acoustically, and the family of serranidae often performs this as a function of the swim bladder. Epinephelus Guttatus (E. guttatus), or more commonly the red hind grouper, is equipped with a drum shaped swim bladder acting as a monopole under typical...
Show moreVertebrates are the most prodigious vocalizing animals in existence, and the most diverse methods of acoustic communication among vertebrates can be found in the ocean. Relatively many teleost fish are gifted with the ability to communicate acoustically, and the family of serranidae often performs this as a function of the swim bladder. Epinephelus Guttatus (E. guttatus), or more commonly the red hind grouper, is equipped with a drum shaped swim bladder acting as a monopole under typical ocean conditions. This configuration allows for what is understood to be omnidirectional projection of tones approximately centered between 40 and 440 Hz and spanning anywhere from 40 to 200 Hz of bandwidth and modulation effects based on observed data provided by researchers. Prior studies on many other fish show correlation in acoustic communication profile with length, size and sexual identity. In the red hind, sexual dimorphism leads to an inherent female identity in all juvenile fish which converts to male according to environmental factors, recommending at least consistent organs across both sexes be assumed even if not in use. Much research has been performed on male fish vocalization in terms of spectral content. Communication in fish is a complex multi-modal process, with acoustic communication being important for many of the species, particularly those in the littoral regions of the worlds’ oceans. If identifying characteristics of the red hind vocalization can be isolated based on detection, classification, tracking and localizing methodologies, then these identifying characteristics may indeed lead to passive feature identification that allows for estimation of individual fish mass. Hypotheses based on vector, cyclostationary and classical tonal mechanics are presented for consideration. A battery of test data collection events, applying pre-recorded fish vocalizations to a geolocated undersea sound source were conducted. The results are supplied with the intent of validating hypothesis in a non-expert system manner that shows how a series of biological metrics may be assessed for detection, classification, localization and mass estimation for an individual vocalizing red hind grouper
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Date Issued: 2017
PURL: http://purl.flvc.org/fau/fd/FA00004826, http://purl.flvc.org/fau/fd/FA00004826
Subject Headings: Wave-motion, Theory of., Sound production by animals., Fishes--Vocalization., Bioacoustics., Animal communication., Underwater acoustics., Acoustic surface waves.
Format: Document (PDF)

Title: Assessment of a nearshore and an offshore queen conch (Strombus gigas) habitat in the Florida Keys using field and laboratory techniques.
Creator: Kowalik, Gretchen A., Davis, Megan, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Biological Sciences
Abstract/Description: Queen conch in the Florida Keys are slowly recovering from overfishing. This study assessed habitat characteristics, metamorphosis and postlarval growth of queen conch in a nearshore and an offshore habitat. The nearshore habitat was dominated by macroalgae while the offshore habitat was dominated by areas of open coarse sediment and seagrass. There was a significant difference among the top six diatom families at each habitat (p 0.05). Larvae metamorphosed when exposed to sediment from...
Show moreQueen conch in the Florida Keys are slowly recovering from overfishing. This study assessed habitat characteristics, metamorphosis and postlarval growth of queen conch in a nearshore and an offshore habitat. The nearshore habitat was dominated by macroalgae while the offshore habitat was dominated by areas of open coarse sediment and seagrass. There was a significant difference among the top six diatom families at each habitat (p < 0.001). The diatom family Naviculaceae was dominant at both sites. No difference in microbial populations was observed (p>0.05). Larvae metamorphosed when exposed to sediment from nearshore and offshore locations (10-40%). Larvae exposed to offshore sediment at 27°C exhibited the highest metamorphic response (~40%). There was no significant difference in growth rate of post larvae fed the food present in the sediment from nearshore and offshore locations. This study may help explain aggregation differences between a nearshore and an offshore queen conch habitat.
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Date Issued: 2007
PURL: http://purl.flvc.org/fau/fd/FA00000783
Subject Headings: Fisheries--Environmental aspects, Fish habitat improvement--Florida Keys, Conservation biology--Research, Gastropoda--Habitat--Florida Keys
Format: Document (PDF)

Title: Markers of Hypoxic Stress in Fishes of the Kissimmee River.
Creator: Dirk, Lynda J., Milton, Sarah L., Florida Atlantic University
Abstract/Description: The channelized Kissimmee River experiences seasonally low dissolved oxygen levels which have changed the ecosystem to favor air-breathing species, while gamefish populations have declined greatly. In 2001 , the central portion of the river (Pool C) was physically restored. To evaluate the usefulness of various stress markers and assess the success of the partial restoration, the stress responses were analyzed (brain monoamines, heat shock proteins, and plasma cortisol) of air-breathing fish ...
Show moreThe channelized Kissimmee River experiences seasonally low dissolved oxygen levels which have changed the ecosystem to favor air-breathing species, while gamefish populations have declined greatly. In 2001 , the central portion of the river (Pool C) was physically restored. To evaluate the usefulness of various stress markers and assess the success of the partial restoration, the stress responses were analyzed (brain monoamines, heat shock proteins, and plasma cortisol) of air-breathing fish (bowfin, Florida gar), versus gamefish (largemouth bass and bluegill sunfish). Fish were collected from hypoxic and normoxic water at three sites in the Kissimmee River. Statistical analysis (MANOV A) showed overall significantly higher stress response in hypoxic gamefish than those in normoxia, with higher hsp72 levels, DOPAC, and Dopamine turnover (DOPAC:DA). Hsp60 and cortisol was significantly higher only in hypoxic bass while serotonin and 5-HIAA were significantly higher in hypoxic bluegill sunfish. Air-breathers did not show higher stress levels during hypoxia.
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Date Issued: 2006
PURL: http://purl.flvc.org/fau/fd/FA00000747
Subject Headings: Kissimmee River (Fla )--Ecology, Restoration ecology--Florida--Kissimmee River Watershed, Adaptation (Biology), Fishes--Effect of stress on
Format: Document (PDF)

Title: Spatial, temporal, and dietary overlap of leatherback sea turtles (Dermochelys coriacea) and ocean sunfishes (family Molidae).
Creator: Desjardin, Nicole A., Florida Atlantic University, Wyneken, Jeanette
Abstract/Description: Investigation of the spatio-temporal movements of leatherback sea turtles (Dermochelys coriacea) and ocean sunfishes (family Molidae), as well as analyses of their prey, support the hypothesis that they may occupy similar ecological niches. This study examined the spatial and temporal occurrences of sunfishes (Mola mola and Masturus lanceolatus) and leatherbacks in the western Atlantic Ocean and assessed dietary overlap. Analyses of leatherback and sunfish distributions, estimated from aerial...
Show moreInvestigation of the spatio-temporal movements of leatherback sea turtles (Dermochelys coriacea) and ocean sunfishes (family Molidae), as well as analyses of their prey, support the hypothesis that they may occupy similar ecological niches. This study examined the spatial and temporal occurrences of sunfishes (Mola mola and Masturus lanceolatus) and leatherbacks in the western Atlantic Ocean and assessed dietary overlap. Analyses of leatherback and sunfish distributions, estimated from aerial surveys, showed greater spatial and temporal overlap along the Northeast coast of North America than in the Gulf of Mexico. Both species co-occur more often during warmer months. Pelagic longline fisheries bycatch data and aerial survey data revealed slightly different trends in spatio-temporal distributions. Nematocysts found within gastrointestinal tract contents of stranded animals indicate that they may feed on similar prey, including cnidarians in the classes Scyphozoa, Hydrozoa, and Cubozoa.
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Date Issued: 2005
PURL: http://purl.flvc.org/fcla/dt/13225
Subject Headings: Freshwater fishes--Atlantic Coast (U S )--Geographical distribution, Sea turtles--Atlantic Coast (U S )--Geographical distribution, Animal behavior
Format: Document (PDF)

Title: Feeding behavior of loggerhead and leatherback sea turtles:a study to better understand longline bycatch.
Creator: Warraich, Natasha, Wyneken, Jeanette, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Biological Sciences
Abstract/Description: Two species of sea turtle, loggerheads (Caretta caretta) and leatherbacks (Dermochelys coriacea) are caught frequently as bycatch in longline fisheries. These fisheries use hooks baited with fish or squid. Yet, leatherbacks feed on gelatinous prey while loggerheads are carnivores. I investigated the responses of these two species to bait odors in controlled laboratory experiments to better understand their feeding behavior and why they interact with longlines. Both species initiated feeding...
Show moreTwo species of sea turtle, loggerheads (Caretta caretta) and leatherbacks (Dermochelys coriacea) are caught frequently as bycatch in longline fisheries. These fisheries use hooks baited with fish or squid. Yet, leatherbacks feed on gelatinous prey while loggerheads are carnivores. I investigated the responses of these two species to bait odors in controlled laboratory experiments to better understand their feeding behavior and why they interact with longlines. Both species initiated feeding behavior in the presence of squid bait odors and just C. caretta showed feeding behavior with sardine odors; neither responded to mackerel odors. The turtles are hooked differently on longlines. Loggerheads are usually hooked in the mouth while leatherbacks are usually hooked in the shoulder or flippers. Comparisons of prey attack behavior and accuracy in apprehending a stimulus in the presence of waterborne food odors identified speciesspecific differences that may predispose the turtles to particular kinds of hooking.
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Date Issued: 2014
PURL: http://purl.flvc.org/fau/fd/FA00004171, http://purl.flvc.org/fau/fd/FA00004171
Subject Headings: Bycatches (Fisheries) -- Prevention, Longlining (Fisheries) -- Bycatches -- Prevention, Longlining (Fisheries) -- Environmental aspects, Sea turtles -- Effect of fishing on, Sea turtles -- Habitat -- Conservation, Sea turtles -- Mortality, Wildlife conservation
Format: Document (PDF)

Title: Population distribution, habitat selection, and life history of the slough crayfish (Procambarus fallax) in the ridge-slough landscape of the central Everglades.
Creator: Van der Heiden, Craig., Charles E. Schmidt College of Science, Department of Biological Sciences
Abstract/Description: Understanding where and why organisms are distributed in the environment are central themes in ecology. Animals live in environments in which they are subject to competing demands, such as the need to forage, to find mates, to reproduce, and to avoid predation. Optimal habitats for these various activities are usually distributed heterogeneously in the landscape and may vary both spatially and temporally, causing animals to adjust their locations in space and time to balance these conflicting...
Show moreUnderstanding where and why organisms are distributed in the environment are central themes in ecology. Animals live in environments in which they are subject to competing demands, such as the need to forage, to find mates, to reproduce, and to avoid predation. Optimal habitats for these various activities are usually distributed heterogeneously in the landscape and may vary both spatially and temporally, causing animals to adjust their locations in space and time to balance these conflicting demands. In this dissertation, I outline three studies of Procambarus fallax in the ridge-slough landscape of Water conservation Area 3A (WCS-3A). The first section outlines an observational sampling study of crayfish population distribution in a four hectare plot, where I statistically model the density distribution at two spatial scales. ... Secondly, I use radio telemetry to study individual adult crayfish movements at two study sites and evaluate habitat selection using Resource Selection Functions. In the third section, I test the habitat selection theory, ideal free distribution, by assessing performance measures (growth and mortality) of crayfish in the two major vegetation types in a late wet season (November 2007) and early wet season (August 2009).
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Date Issued: 2012
PURL: http://purl.flvc.org/FAU/3356890
Subject Headings: Habitat selection, Statistical methods, Fish habitat improvement, Crayfish, Life cycles, Wetland ecology, Habitat (Ecology)
Format: Document (PDF)

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