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Articles 1 - 5 of 5
Full-Text Articles in Marine Biology
A Tale Of Two Antennules: The Performance Of Crab Odor-Capture Organs In Air And Water, Lindsay D. Waldrop, Laura A. Miller, Shilpa Khatri
A Tale Of Two Antennules: The Performance Of Crab Odor-Capture Organs In Air And Water, Lindsay D. Waldrop, Laura A. Miller, Shilpa Khatri
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
Odour capture is an important part of olfaction, where dissolved chemical cues (odours) are brought into contact with chemosensory structures. Antennule flicking by marine crabs is an example of discrete odour capture (sniffing) where an array of chemosensory hairs is waved through the water to create a flow–no flow pattern based on a narrow range of speeds, diameters of and spacings between hairs. Changing the speed of movement and spacing of hairs at this scale to manipulate flow represents a complicated fluid dynamics problem. In this study, we use numerical simulation of the advection and diffusion of a chemical gradient …
Covering Ground: A Look At Movement Patterns And Random Walk Behavior In Aquilonastra Sea Stars, Amanda C. Lohmann, Dennis Evangelista, Lindsay D. Waldrop, Christopher L. Mah, Tyson L. Hedrick
Covering Ground: A Look At Movement Patterns And Random Walk Behavior In Aquilonastra Sea Stars, Amanda C. Lohmann, Dennis Evangelista, Lindsay D. Waldrop, Christopher L. Mah, Tyson L. Hedrick
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
The paths animals take while moving through their environments affect their likelihood of encountering food and other resources; thus, models of foraging behavior abound. To collect movement data appropriate for comparison with these models, we used time-lapse photography to track movements of a small, hardy, and easy-to-obtain organism, Aquilonastra anomala sea stars. We recorded the sea stars in a tank over many hours, with and without a food cue. With food present, they covered less distance, as predicted by theory; this strategy would allow them to remain near food. We then compared the paths of the sea stars to three …
The Hagfish Gland Thread Cell: A Fiber-Producing Cell Involved In Predator Defense, Douglas S. Fudge, Sarah Schorno
The Hagfish Gland Thread Cell: A Fiber-Producing Cell Involved In Predator Defense, Douglas S. Fudge, Sarah Schorno
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
Fibers are ubiquitous in biology, and include tensile materials produced by specialized glands (such as silks), extracellular fibrils that reinforce exoskeletons and connective tissues (such as chitin and collagen), as well as intracellular filaments that make up the metazoan cytoskeleton (such as F-actin, microtubules, and intermediate filaments). Hagfish gland thread cells are unique in that they produce a high aspect ratio fiber from cytoskeletal building blocks within the confines of their cytoplasm. These threads are elaborately coiled into structures that readily unravel when they are ejected into seawater from the slime glands. In this review we summarize what is currently …
Ocean Acidification And Predator-Prey Relations: Correlating Disruption Of Predator Avoidance With Chemosensory Deficits, Alexandra Fw Sidun, William G. Wright
Ocean Acidification And Predator-Prey Relations: Correlating Disruption Of Predator Avoidance With Chemosensory Deficits, Alexandra Fw Sidun, William G. Wright
Student Scholar Symposium Abstracts and Posters
One of the most destructive effects of global climate change is the increased carbon sequestering and consequential acidification of our world’s oceans. The impacts of ocean acidification on marine organisms are still relatively unknown, especially effects on behavioral ecology. Avoiding predation has emerged from recent behavioral ecology literature as a critical feature in the life history of a wide array of animal species; experiments on marine fishes suggest acidic water compromises their predator-avoidance abilities. Recent assays in our lab suggest predator-induced behavior is reduced by weakly acidic water. These experiments do not address the potential factor of generalized malaise caused …
Connecting The Physiological And Behavioral Response To Heat Stress On A Warming Planet, Anastasia Kalyta
Connecting The Physiological And Behavioral Response To Heat Stress On A Warming Planet, Anastasia Kalyta
Student Scholar Symposium Abstracts and Posters
Intertidal communities are considered good models of the biological effects of climate change on ecosystems, as their resident organisms are subjected to heat spells during daytime low tides. The increasing heat exposure can elicit behavioral as well as physiological responses in intertidal organisms. We studied the relationship between these responses to heat stress in the blue-banded hermit crab, Pagurus samuelis, by inducing a “heat shock” with elevated water temperature of 29 °C for 2.5 h. The behavioral effect of heat-shock was quantified using a 30-minute feeding assay, measuring the mass of a standard squid pellet consumed by individual hermit crabs. …