A5083637339- Cephalopods and Marine Biology
- Neurobiology and Insect Physiology Research
- Photoreceptor and optogenetics research
- Coral and Marine Ecosystems Studies
- Retinal Development and Disorders
- Animal Behavior and Reproduction
- Marine Biology and Ecology Research
- Circadian rhythm and melatonin
- Crustacean biology and ecology
- Visual perception and processing mechanisms
- Fish biology, ecology, and behavior
- Olfactory and Sensory Function Studies
- Combustion and Detonation Processes
- Marine Ecology and Invasive Species
- Paleontology and Stratigraphy of Fossils
- Traumatic Ocular and Foreign Body Injuries
- Marine and coastal ecosystems
- Ichthyology and Marine Biology
- Plant and animal studies
- Marine and fisheries research
- Ocular and Laser Science Research
- Disaster Response and Management
- Insect and Arachnid Ecology and Behavior
University of Tulsa
2021-2023
University of South Carolina Sumter
2019-2022
University of South Carolina
2017-2021
University of Maryland, Baltimore County
2014-2016
Arizona State University
2013
ABSTRACT Cephalopod mollusks are renowned for their colorful and dynamic body patterns, produced by an assemblage of skin components that interact with light. These may include iridophores, leucophores, chromatophores (in some species) photophores. Here, we present molecular evidence suggesting cephalopod – small dermal pigmentary organs reflect various colors light photosensitive. RT-PCR revealed the presence transcripts encoding rhodopsin retinochrome within retinas squid Doryteuthis...
Shock waves are supersonic high-amplitude pressure that cause barotrauma when they transfer kinetic energy to the tissues of animals.1-4 Snapping shrimp (Alpheidae) produce shock and exposed them frequently, so we asked if these animals have evolved mechanisms physical protection against them. generate by closing their snapping claws rapidly enough form cavitation bubbles release as an audible "snap" a wave collapse.5-8 We tested protected from helmet-like extension exoskeleton termed...
Cephalopods are famous for their ability to change color and pattern rapidly signaling camouflage. They have keen eyes remarkable vision, made possible by photoreceptors in retinas. External the eyes, also exist parolfactory vesicles some light organs, where they function using a rhodopsin protein that is identical expressed retina. Furthermore, dermal chromatophore organs contain other components of phototransduction (including retinochrome, photoisomerase first found retina), suggesting...
To better understand relationships between the structures and functions of distributed visual systems chitons, we are comparing how morphological differences light-sensing these animals relate to their visually-guided behaviors. All chitons have sensory organs – termed aesthetes embedded within protective shell plates. In some species, interspersed with small, image-forming eyes. other paired pigmented eyespots. Previously, compared visually-influenced behaviors those both Here, characterize...
Abstract Vision has been investigated in many species of birds, but few studies have considered the visual systems large birds and particular implications eyes long-life spans on system capabilities. To address these issues we whooping crane, Grus americana (Gruiformes: Gruidae). G. (an endangered species) is one only two North American crane represents a large, long-lived bird where ultraviolet sensitivity may be degraded by chromatic aberrations entrance light into eye could detrimental to...
A multitude of image-forming eyes are spread across the bodies certain invertebrates. Recent efforts have characterized how these function, but less progress has been made toward describing neural structures associated with them. Scallops, for example, a distributed visual system that includes dozens whose optic nerves project to lateral lobes parietovisceral ganglion (PVG). To identify sensory receptors and chemical synapses scallop system, we studied expression four G protein α subunits...
Animals use their sensory systems to sample information from environments. The physiological properties of differ, leading animals perceive environments in different ways. For example, eyes have temporal sampling rates, with faster-sampling able resolve faster-moving scenes. Eyes can also dynamic ranges. every eye, there is a light level below which vision unreliable because an insufficient signal-to-noise ratio and above the photoreceptors are saturated. Here, we report that snapping shrimp...
Snapping shrimp engage in heterospecific behavioral associations which their partners, such as goby fish, help them avoid predators. It has been argued that snapping these partnerships because vision is impaired by orbital hood, an extension of carapace covers eyes. To examine this idea, we assessed the visual abilities shrimp. We found big claw shrimp, Alpheus heterochaelis, spatial provided compound eyes with reflecting superposition optics. These view world through hood 80-90% transparent...
Abstract Teratological specimens deviate from the conserved form of their species. In doing so, they serve as natural experiments that refine our knowledge developmental mechanisms and limits phenotypes. Here, we describe a specimen West Indian Fuzzy Chiton Acanthopleura granulata (Gmelin, 1791) with fifth valve split into two halves. Using micro‐CT to non‐invasively visualize external internal morphology this specimen, find half valves are symmetrical independent each other any valves. The...
The bay scallop Argopecten irradians (Mollusca: Bivalvia) has dozens of iridescent blue eyes that focus light using mirror-based optics. Here, we test the hypothesis these appear because photonic nanostructures preferentially scatter short-wavelength light. Using transmission electron microscopy, found epithelial cells covering A. have three distinct layers: an outer layer microvilli, a middle random close-packed nanospheres and inner pigment granules. are approximately 180 nm in diameter...
Less than two decades ago a research on the light sensitive skin cells of Xenopus laevis led to discovery visual pigment known as melanopsin. Now, it's that melanopsin is expressed in vertebrate retina, well brain and certain species. The presence has been studied several fish In fact, zebrafish have five genes. Paralichthys dentatus (Summer flounder) commonly found ocean water off east coast North America. A flat where adult form bilaterally asymmetrical, this flounder uses dynamic...