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Articles 391 - 420 of 992
Full-Text Articles in Biology
To Feed Or Not To Feed: Examining The Effects Of Provisioning Tourism On Nurse Sharks In Caye Caulker, Belize, Carlee Jackson
To Feed Or Not To Feed: Examining The Effects Of Provisioning Tourism On Nurse Sharks In Caye Caulker, Belize, Carlee Jackson
All HCAS Student Capstones, Theses, and Dissertations
Wildlife tourism is increasing in popularity around the world, creating the need to understand alterations in animal behavior and spatial distributions that may occur due to associated anthropogenic disturbances. Nurse sharks (Ginglymostoma cirratum, Bonnaterre 1788) are commonly used for wildlife tourism within the Caye Caulker Marine Reserve in Belize. Shark and Ray Village (SRV) is a site within the reserve where nurse sharks are consistently fed by tour/snorkel boats to create an interactive experience with tourists, termed provisioning tourism. Prior to this experiment, no studies had been conducted in SRV to evaluate the impact of provisioning tourism (tourism …
Fish Community Composition And Structure Near A Freshwater River Diversion In Southeastern Louisiana, Rachel L. Snider
Fish Community Composition And Structure Near A Freshwater River Diversion In Southeastern Louisiana, Rachel L. Snider
LSU Master's Theses
Gulf of Mexico estuaries, particularly in Louisiana, are among the world’s most productive, with landings of commercially- and recreationally-important species exceeding all other contiguous US states. Coastal wetlands are disappearing at an alarming rate because they have been impounded from Mississippi River water and sediment. Although controversial, one proposed solution is to re-route the Mississippi River through diversions and siphons to supply the freshwater and sediments necessary to rebuild vanishing wetlands, particularly in Barataria Bay and Breton Sound, LA. This strategy is one approach outlined in the Louisiana Coastal Master Plan. This project aimed to describe the composition and structure …
Comparative Study Of Spectral Sensitivity, Irradiance Sensitivity, Spatial Resolution And Temporal Resolution In The Visual Systems Of Aratus Pisonii And Ocypode Quadrata, Ruchao Qian
All HCAS Student Capstones, Theses, and Dissertations
Autrum’s studies (1950, 1958) on terrestrial arthropods first revealed that the visual systems of arthropods reflected their lifestyles and habitats, demonstrating that rapidly moving predatory diurnal species tend to have better temporal resolution than slower moving nocturnal species. In order to test Autrum’s hypothesis that visual adaptions are driven by predator/prey interactions, the visual physiology of a nocturnal fast-moving predatory crab, the Atlantic ghost crab (Ocypode quadrata), and a diurnal herbivorous crab, the mangrove tree crab (Aratus pisonii), was examined and compared. Spectral sensitivity, irradiance sensitivity, and temporal resolution of the crabs were quantified using the …
Steady Heartbeat: Field And Laboratory Studies Indicate Unexpected Resilience To High Temperatures For The Ribbed Mussel Geukensia Demissa, Ashlyn N. Smith Ms.
Steady Heartbeat: Field And Laboratory Studies Indicate Unexpected Resilience To High Temperatures For The Ribbed Mussel Geukensia Demissa, Ashlyn N. Smith Ms.
Honors College Theses
Salt marshes are important ecosystems found along the coast of Georgia. Salt marshes are hosts to diverse organisms that interact with each other to promote many ecosystem services, such as storm buffering and flooding, and absorption of excess nutrients. Among these diverse organisms is the ribbed mussel, Geukensia demissa. Mussels are a foundation species in this intertidal landscape, and without them the whole salt marsh would be negatively affected. The purpose of this investigation was to explore the thermal stress response of G. demissa to rising temperatures. Mussels were collected from three locations that were landlocked, close to a …
Pismo Clams (Tivela Stultorum) In Califorina: Population Status, Habitat Associations, Reproduction, And Growth, Alexandria R. Marquardt
Pismo Clams (Tivela Stultorum) In Califorina: Population Status, Habitat Associations, Reproduction, And Growth, Alexandria R. Marquardt
Master's Theses
Marine shellfish play a vital role in intertidal ecosystems and coastal communities, but many of these fisheries are small-scale and lack the necessary monitoring to ensure long-term sustainability. Effective management often requires information on key demographic parameters, such as population status, reproduction and growth. Pismo clams (Tivela stultorum) are a culturally important and iconic species in California, which supported a thriving commercial and recreational fishery throughout much of the 1900’s. However, Pismo clam populations have declined statewide in recent decades and are attributed to human harvest and predation by California sea otters (Enhydra lutris); However, no …
How Can We Change Gut Microbiota For Healthy Lives?, Elizaveta Shmakova
How Can We Change Gut Microbiota For Healthy Lives?, Elizaveta Shmakova
Scientific Communication News
No abstract provided.
A Reexamination Of The Freshwater Mussel Community Of The Little Miami River, Emily Davis
A Reexamination Of The Freshwater Mussel Community Of The Little Miami River, Emily Davis
Undergraduate Honors Thesis Projects
Understanding the changes in biodiversity and local freshwater mussel populations is critical to mitigate the risks to these populations. Freshwater ecosystems continue to degrade rapidly. The freshwater mussel community of the Little Miami River is degraded and has been in decline for many years. The biodiversity contained within freshwater ecosystems is lost at unprecedented rates influenced by human activity. Freshwater mussels play a key role in understanding the effects of human activity on freshwater ecosystems as well as maintaining the health of freshwater habitats. However, they are also sensitive to changes and disturbances, in their ecosystems. This study involved monitoring …
Diet Analysis Of Stranded Bottlenose Dolphins (Tursiops Truncatus) In Virginia, Kristen Marie Volker
Diet Analysis Of Stranded Bottlenose Dolphins (Tursiops Truncatus) In Virginia, Kristen Marie Volker
Biological Sciences Theses & Dissertations
This study describes the diet of bottlenose dolphins (Tursiops truncatus) stranded in Virginia via stomach content analysis and considers factors such as proportion of numerical abundance and reconstructed mass, frequency of occurrence, average reconstructed prey size, prey diversity and quantity, and otolith degradation code. Fish size was estimated via regression equations established from local fish collected during the study that derive wet weight directly from otolith length or width. Squid size is estimated from previously published equations. Soniferous fishes dominated the diet, especially Atlantic croaker, spot, and seatrout spp., adding evidence to the theory that bottlenose dolphins passively …
The Role Of Dislodgement In The Territorial Ecology Of The Owl Limpet, Lottia Gigantea, Ryan T. Kabala, Natalie Swinford, Maria J. Mason, William G. Wright
The Role Of Dislodgement In The Territorial Ecology Of The Owl Limpet, Lottia Gigantea, Ryan T. Kabala, Natalie Swinford, Maria J. Mason, William G. Wright
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
Ascertaining the risks and benefits of different behaviors is a central goal of research on territoriality. Although most territorial behavior is ritualized, with concomitant reduced risks for both residents and intruders, this ritualization is generally found to be underpinned by rare, highly consequential, interactions. The agonistic behavior of the intertidal owl limpet, Lottia gigantea, involves defense of a feeding territory, and includes a relatively explosive thrusting response by territory holders against intruding conspecifics. We here ask whether this thrusting behavior is capable of entirely dislodging intruders from their rocky wave-swept substratum, thereby ridding the resident of future challenges by …
Host Population Genetics And Biogeography Structure The Microbiome Of The Sponge Cliona Delitrix, Cole Easson, Andia Chaves-Fonnegra, Robert W. Thacker, Jose Lopez
Host Population Genetics And Biogeography Structure The Microbiome Of The Sponge Cliona Delitrix, Cole Easson, Andia Chaves-Fonnegra, Robert W. Thacker, Jose Lopez
Biology Faculty Articles
Sponges occur across diverse marine biomes and host internal microbial communities that can provide critical ecological functions. While strong patterns of host specificity have been observed consistently in sponge microbiomes, the precise ecological relationships between hosts and their symbiotic microbial communities remain to be fully delineated. In the current study, we investigate the relative roles of host population genetics and biogeography in structuring the microbial communities hosted by the excavating sponge Cliona delitrix. A total of 53 samples, previously used to demarcate the population genetic structure of C. delitrix, were selected from two locations in the Caribbean Sea and …
Discovery Of Bilaterian-Type Through-Guts In Cloudinomorphs From The Terminal Ediacaran Period, J. D. Schiffbauer, T. Selly, S. M. Jacquet, Rachel Merz, L. L. Nelson, M. A. Strange, Y. Cai, E. F. Smith
Discovery Of Bilaterian-Type Through-Guts In Cloudinomorphs From The Terminal Ediacaran Period, J. D. Schiffbauer, T. Selly, S. M. Jacquet, Rachel Merz, L. L. Nelson, M. A. Strange, Y. Cai, E. F. Smith
Biology Faculty Works
No abstract provided.
Feeding Behavior Fundamentally Affects Micro-Particle Intake In Mangrove Crabs, Rola Alsharif
Feeding Behavior Fundamentally Affects Micro-Particle Intake In Mangrove Crabs, Rola Alsharif
Scientific Communication News
No abstract provided.
Human Vs. Bear: Who Needs Salmon More?, Brittany N. Savercool
Human Vs. Bear: Who Needs Salmon More?, Brittany N. Savercool
Scientific Communication News
No abstract provided.
How Corals Avoid Mating Between Different Species, Amanda Kempton
How Corals Avoid Mating Between Different Species, Amanda Kempton
Scientific Communication News
No abstract provided.
Microplastics Invade Manta Ray Feeding Grounds Giving Rise To The Effects Of Global Plastic Pollution, Meghan Ulmer
Microplastics Invade Manta Ray Feeding Grounds Giving Rise To The Effects Of Global Plastic Pollution, Meghan Ulmer
Scientific Communication News
No abstract provided.
Battle For The Top: Killer Whales Vs. White Sharks, Michael P. Mcdonough
Battle For The Top: Killer Whales Vs. White Sharks, Michael P. Mcdonough
Scientific Communication News
No abstract provided.
Can Ocean Modeling Help Predict Where Cold-Stunned Sea Turtles Wash Up?, Mikayla L. Twiss
Can Ocean Modeling Help Predict Where Cold-Stunned Sea Turtles Wash Up?, Mikayla L. Twiss
Scientific Communication News
No abstract provided.
White Sharks As A Novel Threat To Sea Otter Populations In California, Kimberly S. Schmutz
White Sharks As A Novel Threat To Sea Otter Populations In California, Kimberly S. Schmutz
Scientific Communication News
No abstract provided.
Feeding Ecology Of Invasive Lionfish In Southeast Florida, Ruchao Qian
Feeding Ecology Of Invasive Lionfish In Southeast Florida, Ruchao Qian
Scientific Communication News
No abstract provided.
Endangered Whale Species In A Pristine Environment: Pollutant Concentrations Indicative Of A Problem?, Briana R. Coulter
Endangered Whale Species In A Pristine Environment: Pollutant Concentrations Indicative Of A Problem?, Briana R. Coulter
Scientific Communication News
No abstract provided.
No Evidence Of Fine Scale Thermal Adaption In Green Turtles, Taylor Apter
No Evidence Of Fine Scale Thermal Adaption In Green Turtles, Taylor Apter
Scientific Communication News
No abstract provided.
New Intervention Method For Halting Stony Coral Tissue Loss Disease, Samantha Buckley
New Intervention Method For Halting Stony Coral Tissue Loss Disease, Samantha Buckley
Scientific Communication News
No abstract provided.
Machine Learning Provides A Much-Needed Solution For Marine Mammal Protection, Shaman Patel
Machine Learning Provides A Much-Needed Solution For Marine Mammal Protection, Shaman Patel
Scientific Communication News
No abstract provided.
Ghost Fishing In Coral Reef Ecosystems, Katherine E. Meurer
Ghost Fishing In Coral Reef Ecosystems, Katherine E. Meurer
Scientific Communication News
No abstract provided.
Climate Change Could Impact Narwhal Consumption By Killer Whales, Mykenzee L. Munaco
Climate Change Could Impact Narwhal Consumption By Killer Whales, Mykenzee L. Munaco
Scientific Communication News
No abstract provided.
Fishing Industry And Misidentification Leading To Angel Sharks Decline, Gretchen M. Spencer
Fishing Industry And Misidentification Leading To Angel Sharks Decline, Gretchen M. Spencer
Scientific Communication News
No abstract provided.
Flamboyant Cuttlefish: Camouflage Tactics And Colorful Behavior, Shaquilla M. Hamlett
Flamboyant Cuttlefish: Camouflage Tactics And Colorful Behavior, Shaquilla M. Hamlett
Scientific Communication News
No abstract provided.
Distribution Of Polar Bear Dens In The Canadian Arctic, Brice Schrenkel
Distribution Of Polar Bear Dens In The Canadian Arctic, Brice Schrenkel
Scientific Communication News
No abstract provided.
The Importance Of Understanding Trophic Transfer In Top Marine Predators Due To An Increase In Plastic Production, Annika M. Markovich
The Importance Of Understanding Trophic Transfer In Top Marine Predators Due To An Increase In Plastic Production, Annika M. Markovich
Scientific Communication News
No abstract provided.
Deep Sea Sediments Of The Arctic Central Basin: A Potential Sink For Microplastics, Colleen Mcmaken
Deep Sea Sediments Of The Arctic Central Basin: A Potential Sink For Microplastics, Colleen Mcmaken
Scientific Communication News
No abstract provided.