Current Search: Marine animals (x)
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Pages
- Title
- Ultrastructural differences in the eggs and ovarian follicle cells of Capitella (Polychaeta) sibling species.
- Creator
- Eckelbarger, Kevin J., Grassle, J. P., Harbor Branch Oceanographic Institute
- Date Issued
- 1983
- PURL
- http://purl.flvc.org/FCLA/DT/3171584
- Subject Headings
- Polychaeta, Marine animals --Eggs, Annelida --Eggs, Fertilization, Larvae
- Format
- Document (PDF)
- Title
- Biology: Fish.
- Creator
- Gilmore, R. G., Harbor Branch Oceanographic Institute
- Date Issued
- 1990
- PURL
- http://purl.flvc.org/FCLA/DT/3343813
- Subject Headings
- Fishes, Biology, Indian River (Fla. : Lagoon), Marine animals
- Format
- Document (PDF)
- Title
- Reply to Schoenberg.
- Creator
- Gerritsen, Jeroen, Orcutt, John D., Jr., Porter, Karen G., Harbor Branch Oceanographic Institute
- Date Issued
- 1985
- PURL
- http://purl.flvc.org/FCLA/DT/3172810
- Subject Headings
- Chlamydomonas, Chlamydomonas reinhardtii, Eutrophication, Phytoplankton, Marine animals --Food
- Format
- Document (PDF)
- Title
- Motile epifauna of marine macrophytes in the Indian River Lagoon, Florida. I. Comparisons among three species of seagrasses from adjacent beds.
- Creator
- Virnstein, Robert W., Howard, Robert K., Harbor Branch Oceanographic Institute
- Date Issued
- 1987
- PURL
- http://purl.flvc.org/FCLA/DT/3172769
- Subject Headings
- Seagrasses --Habitat, Benthic animals, Marine invertebrates, Aquatic plants, Biomass
- Format
- Document (PDF)
- Title
- Motile epifauna of marine macrophytes in the Indian River Lagoon, Florida. II. Comparisons between drift algae and three species of seagrasses.
- Creator
- Virnstein, Robert W., Howard, Robert K., Harbor Branch Oceanographic Institute
- Date Issued
- 1987
- PURL
- http://purl.flvc.org/FCLA/DT/3172772
- Subject Headings
- Seagrasses --Habitat, Benthic animals, Marine invertebrates, Aquatic plants, Biomass, Algae
- Format
- Document (PDF)
- Title
- The role of seagrass biomass in the organization of benthic macrofaunal assemblages.
- Creator
- Stoner, Allan W., Harbor Branch Oceanographic Institute
- Date Issued
- 1980
- PURL
- http://purl.flvc.org/FCLA/DT/3174446
- Subject Headings
- Seagrasses, Benthos --Ecology, Amphipoda, Polychaeta, Marine animals --Food
- Format
- Document (PDF)
- Title
- Quantitative assessment of marine sponge cells in vitro: Development of improved growth medium.
- Creator
- Willoughby, Robin, Pomponi, Shirley A.
- Date Issued
- 2000
- PURL
- http://purl.flvc.org/FCLA/DT/2795606
- Subject Headings
- Animal cell biotechnology, Marine biology, Cell culture --Technique
- Format
- Document (PDF)
- Title
- In situ feeding rates of the ctenophore Mnemiopsis mccradyi.
- Creator
- Larson, R. J., Harbor Branch Oceanographic Institute
- Date Issued
- 1987
- PURL
- http://purl.flvc.org/FCLA/DT/3174017
- Subject Headings
- Ctenophora, Animal feeding, Predation (Biology), Copepoda, Marine zooplankton
- Format
- Document (PDF)
- Title
- South Atlantic MPAs and deepwater coral HAPCs: Characterization of benthic habitat and fauna.
- Creator
- Harter, Stacey, David, Andrew, Reed, John K.
- Date Issued
- 2013
- PURL
- http://purl.flvc.org/fcla/dt/3359866
- Subject Headings
- Marine protected areas, Benthos--Habitat, Benthic animals
- Format
- Document (PDF)
- Title
- Functional aspects of behavior and morphology in the decorator crab Microphrys Bicornutus (Latreille, 1825) (Crustacea: Brachyura: Mithracidae).
- Creator
- Salazar, Monique Alexandra, Brooks, W. Randy, Charles E. Schmidt College of Science, Department of Biological Sciences
- Abstract/Description
-
Masking or decorator crabs, conceal themselves partially through camouflage, by selecting or indiscriminately attaching materials from their environment to their exoskeleton. Functional aspects of decorating behavior and morphology in this group have not been documented. Using Microphrys bicornutus as a model species, this dissertation demonstrates clearly that decorating is an advantageous phenotype that has evolved to serve several functions. Decorating is a complex behavior that begins...
Show moreMasking or decorator crabs, conceal themselves partially through camouflage, by selecting or indiscriminately attaching materials from their environment to their exoskeleton. Functional aspects of decorating behavior and morphology in this group have not been documented. Using Microphrys bicornutus as a model species, this dissertation demonstrates clearly that decorating is an advantageous phenotype that has evolved to serve several functions. Decorating is a complex behavior that begins when a crab approaches an algal substrate and results in the attachment of algae to hooked setae on the exoskeleton. Once decorated, crabs remain motionless on the substrate until disturbed or until another behavior is initiated. This was confirmed for M. bicornutus, as crabs spent a significant amount of time feeding, remaining motionless, picking, and walking when compared to decorating. Crabs displayed agonistic behaviors during encounters with conspecifics conspecifics. These included both active aggressive behavior and display behavior. Crabs showed a decrease in motility during these encounters, helping maintain dispersed distributions, thereby decreasing intrsapecific encounters in the field. Trials were done to determine the effect of conspecifics, predators and feeding preferences on algal utilization. M. bicornutus showed a significant decrease in the amount of algae used for decoration in the highest density trials (i.e., 4 and 8 crabs). Agonistic displays and aggressive behavior between these crabs likely affected the time available for decorating. Decorated crabs isolated from an algal substrate were more likely to survive in the presence of either of two sympatric fish predators. Thus, being protected by the algal decoration on their exoskeletons. Trials also showed a parallel between algal consumption and algal materials used for decoration. In addition to its protective function, algae used by M. bicornutus for decoration simultaneously serve as short term food supplies for the crabs. Eleven morphologically complex structures were identified and mapped on the exoskeleton. Hooked setae were the primary structures used to attach algae to the crab’s body. Ten additional setal structures were present, including two novel types of setae. On the basis of location and morphological variation exhibited among these latter structures, a primary sensory function may be inferred.
Show less - Date Issued
- 2013
- PURL
- http://purl.flvc.org/fau/fd/FA0004056
- Subject Headings
- Animal behavior, Camouflage (Biology), Crabs -- Behavior, Marine ecology, Predation (Biology)
- Format
- Document (PDF)
- Title
- A comparison of stability in swimming loggerhead (Caretta caretta) and green (Chelonia mydas) sea turtle posthatchlings.
- Creator
- Dougherty, Erin., Charles E. Schmidt College of Science, Department of Biological Sciences
- Abstract/Description
-
Posthatchling green (Chelonia mydas) and loggerhead (Caretta caretta) turtles overlap ecologically but differ morphologically. This study compared hydrodynamic stability between the two species during swimming to test for functional differences in body shape. Flipper movement paths, four stability measures (yaw, pitch, heave, and sideslip), and the relative positions of the centers of buoyancy and gravity were compared between species. Both centers of buoyancy and gravity lie in the anterior...
Show morePosthatchling green (Chelonia mydas) and loggerhead (Caretta caretta) turtles overlap ecologically but differ morphologically. This study compared hydrodynamic stability between the two species during swimming to test for functional differences in body shape. Flipper movement paths, four stability measures (yaw, pitch, heave, and sideslip), and the relative positions of the centers of buoyancy and gravity were compared between species. Both centers of buoyancy and gravity lie in the anterior body; their positions relative to one another differed with species, but showed no functional consequences. Neither species demonstrated substantial yaw, sideslip, or pitch. Both experienced upward heave with the flippers' downstroke and downward heave with the upstroke; however phase relationships differed between these limb and body motions. No differences were found between the two species. Despite obvious morphological differences, loggerheads and green turtles were similarly stable during swimming, suggesting that the species use different mechanisms to achieve stability.
Show less - Date Issued
- 2009
- PURL
- http://purl.flvc.org/FAU/186689
- Subject Headings
- Sea turtles, Morphology, Sea turtles, Physiology, Animal locomotion, Marine ecology
- Format
- Document (PDF)
- Title
- Prey selectivity of the fishes Stephanolepis hispidus and Histrio histrio on the Sargassum shrimps Latreutes fucorum and Leander tenuicornis.
- Creator
- Hutchinson, Kimberly A., Florida Atlantic University, Brooks, W. Randy
- Abstract/Description
-
Predator-prey relationships were studied between the shrimps Latreutes fucorum and Leander tenuicornis and the predatory fishes Stephanolepis hispidus and Histrio histrio, all found within pelagic Sargassum communities. Average survival times of shrimps were compared in species, size/density, and habitat selection studies. The results showed that S. hispidus had a preference for prey species while H. histrio did not. 30 mm shrimp survived longer than the 10 mm shrimp for both S. hispidus and...
Show morePredator-prey relationships were studied between the shrimps Latreutes fucorum and Leander tenuicornis and the predatory fishes Stephanolepis hispidus and Histrio histrio, all found within pelagic Sargassum communities. Average survival times of shrimps were compared in species, size/density, and habitat selection studies. The results showed that S. hispidus had a preference for prey species while H. histrio did not. 30 mm shrimp survived longer than the 10 mm shrimp for both S. hispidus and H. histrio. Density was a factor in the survival times of the 20 mm shrimps with S. hispidus only. L. tenuicornis survived longer in artificial Sargassum habitats with H. histrio. The larger shrimps survived longer in the artificial habitats than the smaller shrimps with S. hispidus. Both fish predators employ optimal foraging strategies with similarities and differences, the latter of which are likely related to behavioral differences in the these predator and prey.
Show less - Date Issued
- 2004
- PURL
- http://purl.flvc.org/fcla/dt/13156
- Subject Headings
- Predation (Biology), Fishes--Ecology, Ocean bottom ecology, Marine animals
- Format
- Document (PDF)
- Title
- The role of chemical and visual cues by two Sargassum shrimps in locating and selecting habitats.
- Creator
- Jobe, Corrine F., Florida Atlantic University, Brooks, W. Randy, Charles E. Schmidt College of Science, Department of Biological Sciences
- Abstract/Description
-
The Sargassum community is comprised of a unique and diverse assemblage of organisms. Habitat detection by two of the most common invertebrates, Latreutes fucorum and Leander tenuicornis , was investigated. Results of this study do not support that either L. fucorum or L. tenuicornis respond to chemical cues released by the Sargassum habitat in the absence of other information. Habitat selection of both shrimp species was examined as well. Both L. fucorum and L. tenuicornis selected live...
Show moreThe Sargassum community is comprised of a unique and diverse assemblage of organisms. Habitat detection by two of the most common invertebrates, Latreutes fucorum and Leander tenuicornis , was investigated. Results of this study do not support that either L. fucorum or L. tenuicornis respond to chemical cues released by the Sargassum habitat in the absence of other information. Habitat selection of both shrimp species was examined as well. Both L. fucorum and L. tenuicornis selected live Sargassum over artificial Sargassum . Moreover, L. fucorum selected Sargassum natans over Sargassum fluitans when only visual cues were available, whereas large-sized L. tenuicornis selected S. fluitans under the same conditions. Conversely, habitat selection trials combining both chemical and visual cues resulted in no preference between the two Sargassum species by either shrimp species. Additional ecological factors that possibly influence habitat location and selection are discussed as well as the importance of Sargassum in terms of pelagic fisheries management.
Show less - Date Issued
- 2006
- PURL
- http://purl.flvc.org/fcla/dt/13381
- Subject Headings
- Habitat (Ecology), Sargassum, Marine chemical ecology, Animal behavior
- Format
- Document (PDF)
- Title
- Larval predation by epifauna on temperate reefs: scale, power and the scarcity of measurable effects.
- Creator
- Young, Craig M., Harbor Branch Oceanographic Institute
- Date Issued
- 1990
- PURL
- http://purl.flvc.org/FCLA/DT/3343815
- Subject Headings
- Benthic animals, Suspension feeders, Larvae--Ecology, Predatory marine animals, Reefs
- Format
- Document (PDF)
- Title
- Habitat location and selection by the Sargassum crab Portunus sayi: the role of sensory cues.
- Creator
- West, Lorin E., Charles E. Schmidt College of Science, Department of Biological Sciences
- Abstract/Description
-
The Sargassum community consists of a unique and idverse assemblage of fauna critical to pelagic food chains. Associated organisms presumably have adaptations to assist in finding Sargassum. This study investigated cues used for habitat location and selection by the Sargassum crab, Portunus sayi. Chemical detection trials were conducted with a two-chamber choice apparatus with Sargassum spp. and Thalassia testudinum as source odors. Visual detection trials (devoid of chemical cues) and...
Show moreThe Sargassum community consists of a unique and idverse assemblage of fauna critical to pelagic food chains. Associated organisms presumably have adaptations to assist in finding Sargassum. This study investigated cues used for habitat location and selection by the Sargassum crab, Portunus sayi. Chemical detection trials were conducted with a two-chamber choice apparatus with Sargassum spp. and Thalassia testudinum as source odors. Visual detection trials (devoid of chemical cues) and habitat selection trials were conducted in which crabs were given a choice of habitats. Results showed that P. sayi respoded to chemical odors from Sargassum spp. Crabs visually located habitats but did not visually distinguish between different habitats. In habitat selection trials, crabs selected Sargassum spp. over artificial Sargassum and T. testudinum. These results suggest that crabs isolated from Sargassum likely use chemoreception from longer distances ; within visual proximity of a potential patch, crabs use both chemical and visual information.
Show less - Date Issued
- 2012
- PURL
- http://purl.flvc.org/FAU/3356901
- Subject Headings
- Habitat (Ecology), Sargassum, Ecology, Marine chemical ecology, Chemoreceptors, Animal behavior, Animal communication, Portunus sayi, Ecology
- Format
- Document (PDF)
- Title
- Jaws of significance: the conservationist's perception of the shark in South Florida.
- Creator
- Nason, Patrick., Dorothy F. Schmidt College of Arts and Letters, Department of Anthropology
- Abstract/Description
-
In examining the intentional relationship between the conservationist and the shark in South Florida, this thesis considers the latter as both a scarce natural resource - caught up in what Clifford Geertz citing Weber referred to as "webs of significance" (Geertz 1973:5) - and as a reflection of dynamic human conceptions of nature : a meta shark. This complex relationship is described by interpretations of conservation discourse recorded through ethnographic interviews that demonstrate how...
Show moreIn examining the intentional relationship between the conservationist and the shark in South Florida, this thesis considers the latter as both a scarce natural resource - caught up in what Clifford Geertz citing Weber referred to as "webs of significance" (Geertz 1973:5) - and as a reflection of dynamic human conceptions of nature : a meta shark. This complex relationship is described by interpretations of conservation discourse recorded through ethnographic interviews that demonstrate how these perceptions have been influenced by factors such as personal experiences, film and text, and broad changes in the relationship between humans and nature since the early days of the environmental movement. By linking these perceptual changes with changes in American shark conservation policy, this work not only explains a relationship between culture, perception, and policy, but also celebrates the emergence of a multispecies marine community.
Show less - Date Issued
- 2012
- PURL
- http://purl.flvc.org/FAU/3358755
- Subject Headings
- Sharks, Conservation, Predation (Biology), Wildlife conservation, Aquatic resources conservation, Marine animals, Ecology, Human-animal relationships
- Format
- Document (PDF)
- Title
- Effects of a decrease in downwelling irradiance on the daytime vertical distribution patterns of zooplankton and micronekton.
- Creator
- Frank, Tamara M., Harbor Branch Oceanographic Institute, Widder, Edith A.
- Date Issued
- 2002
- PURL
- http://purl.flvc.org/FCLA/DT/2783236
- Subject Headings
- Zooplankton --Ecology, Marine animals --Geographical distribution --Research, Light-- Physiological effect, Marine ecology, Irradiation
- Format
- Document (PDF)
- Title
- Ultrastructure of gametogenesis in a chemosynthetic mytilid bivalve (Bathymodiolus childressi) from a bathyal, methane seep environment (northern Gulf of Mexico).
- Creator
- Eckelbarger, Kevin J., Young, Craig M., Harbor Branch Oceanographic Institute
- Date Issued
- 1999
- PURL
- http://purl.flvc.org/FCLA/DT/2795602
- Subject Headings
- Gametogenesis, Mytilidae --Physiology, Marine biology --Mexico, Gulf of, Bivalves --Physiology, Marine animals --Embryos
- Format
- Document (PDF)
- Title
- Experimental culture of the estuarine ectoproct Conopeum tenuissimum from Chesapeake Bay.
- Creator
- Winston, Judith E., Harbor Branch Oceanographic Institute
- Date Issued
- 1976
- PURL
- http://purl.flvc.org/FCLA/DT/3171557
- Subject Headings
- Marine algae culture, Estuarine animals, Plankton, Red tide, Marine algae as feed
- Format
- Document (PDF)
- Title
- Consumptive effects of predatory fish reduce wetland crayfish (Procambarus spp.) recruitment and drive species turnover.
- Creator
- Kellogg, Christopher M., Charles E. Schmidt College of Science, Department of Biological Sciences
- Abstract/Description
-
Trade-offs in traits conferring success in permanent and ephemeral habitats are often at odds with few species being able to persist in both types of environments. I examined the effect of sunfish predators on two species of south Florida crayfish to establish the mechanism that limits one species, Procambarus alleni, to short-hydroperiod environments. The crayfish assemblage response to a gradient of sunfish predators and the effect of predation on P. fallax alone was examined. I also...
Show moreTrade-offs in traits conferring success in permanent and ephemeral habitats are often at odds with few species being able to persist in both types of environments. I examined the effect of sunfish predators on two species of south Florida crayfish to establish the mechanism that limits one species, Procambarus alleni, to short-hydroperiod environments. The crayfish assemblage response to a gradient of sunfish predators and the effect of predation on P. fallax alone was examined. I also examined the effects of sunfish on crayfish growth and quantified activity levels and risky behaviors of both crayfish species. P. alleni dominated at low sunfish densities but dominance shifted with increasing sunfish density. P. alleni was more active and likely to initiate risky behaviors, suggesting that sunfish predators remove the more active P. alleni, reducing their numbers disproportionally to those of P. fallax and allowing P. fallax to dominate crayfish assemblages in long-hydroperiod wetlands.
Show less - Date Issued
- 2011
- PURL
- http://purl.flvc.org/FAU/3171400
- Subject Headings
- Wetland ecology, Habitat selection, Marine ecosystem management, Predatory marine animals, Ecology
- Format
- Document (PDF)