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Articles 31 - 56 of 56
Full-Text Articles in Marine Biology
Identification Of Shark Species In Commercial Products Using Dna Barcoding, Rosalee S. Hellberg, Rachel B. Isaacs, Eduardo L. Hernandez
Identification Of Shark Species In Commercial Products Using Dna Barcoding, Rosalee S. Hellberg, Rachel B. Isaacs, Eduardo L. Hernandez
Food Science Faculty Articles and Research
Sharks are harvested globally and sold in a variety of commercial products. However, they are particularly vulnerable to overfishing and many species are considered protected or endangered. The objective of this study was to identify species in various commercial shark products and to assess the effectiveness of three different DNA barcoding primer sets. Thirty-five products were collected for this study, including fillets, jerky, soup, and cartilage pills. DNA barcoding of these products was undertaken using two full-length primer sets and one mini-barcode primer set within the cytochrome c oxidase subunit (COI) gene. Successfully sequenced samples were then analyzed and identified …
What Can Computational Modeling Tell Us About The Diversity Of Odor-Capture Structures In The Pancrustacea?, Lindsay D. Waldrop, Yanyan He, Shilpa Khatri
What Can Computational Modeling Tell Us About The Diversity Of Odor-Capture Structures In The Pancrustacea?, Lindsay D. Waldrop, Yanyan He, Shilpa Khatri
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
A major transition in the history of the Pancrustacea was the invasion of several lineages of these animals onto land. We investigated the functional performance of odor-capture organs, antennae with olfactory sensilla arrays, through the use of a computational model of advection and diffusion of odorants to olfactory sensilla while varying three parameters thought to be important to odor capture (Reynolds number, gap-width-to-sensillum-diameter ratio, and angle of the sensilla array with respect to oncoming flow). We also performed a sensitivity analysis on these parameters using uncertainty quantification to analyze their relative contributions to odor-capture performance. The results of this analysis …
Cellular Mechanisms Of Slime Gland Refilling In Pacific Hagfish (Eptatretus Stoutii), Sarah Schorno, Todd E. Gillis, Douglas S. Fudge
Cellular Mechanisms Of Slime Gland Refilling In Pacific Hagfish (Eptatretus Stoutii), Sarah Schorno, Todd E. Gillis, Douglas S. Fudge
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
Hagfishes use their defensive slime to ward off gill-breathing predators. Slime gland refilling is a surprisingly slow process, and previous research has shown that the composition of the slime exudate changes significantly during refilling, which likely has consequences for the functionality of the slime. This study set out to expand our understanding of slime gland refilling by examining the cellular processes involved in refilling of the glands, as well as determining where in the gland the main slime cells – the gland thread cells and gland mucous cells – arise. Slime glands were electro-stimulated to exhaust their slime stores, left …
Prototype Of A Fish Inspired Swimming Silk Robot, Cassandra M. Donatelli, Sarah A. Bradner, Juanita Mathews, Erin Sanders, Casey R. Culligan, David Kaplan, Eric D. Tytell
Prototype Of A Fish Inspired Swimming Silk Robot, Cassandra M. Donatelli, Sarah A. Bradner, Juanita Mathews, Erin Sanders, Casey R. Culligan, David Kaplan, Eric D. Tytell
Engineering Faculty Articles and Research
Elongate fishes have evolved hundreds of times throughout the tree of life. They occupy many aquatic environments, from streams and ponds to the deepest parts of the ocean. Due to their long body and numerous vertebrae, they are also highly flexible animals, which makes them useful as bioinspiration for designs in the field of soft robotics. We present a biodegradable soft robot prototype, inspired by elongate fishes. The robot's body is primarily composed of a silk hydrogel with embedded fibers to mimic the structure of natural fish skin. When actuated at the front, the flexible gel prototype mimics the undulatory …
Emptying And Refilling Of Slime Glands In Atlantic (Myxine Glutinosa) And Pacific (Eptatretus Stoutii) Hagfishes, Sarah Schorno, Todd E. Gillis, Douglas S. Fudge
Emptying And Refilling Of Slime Glands In Atlantic (Myxine Glutinosa) And Pacific (Eptatretus Stoutii) Hagfishes, Sarah Schorno, Todd E. Gillis, Douglas S. Fudge
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
Hagfishes are known for their unique defensive slime, which they use toward off gill-breathing predators. Although much is known about the slime cells (gland thread cells and gland mucous cells), little is known about how long slime gland refilling takes, or how slime composition changes with refilling or repeated stimulation of the same gland. Slime glands can be individually electrostimulated to release slime, and this technique was used to measure slime gland refilling times for Atlantic and Pacific hagfish. The amount of exudate produced, the composition of the exudate and the morphometrics of slime cells were analyzed during refilling, and …
Synergistic Use Of Remote Sensing And Modeling To Assess An Anomalously High Chlorophyll-A Event During Summer 2015 In The South Central Red Sea, Wenzhao Li, Hesham El-Askary, K. P. Manikandan, Mohamed A. Qurban, Michael J. Garay, Olga V. Kalishnikova
Synergistic Use Of Remote Sensing And Modeling To Assess An Anomalously High Chlorophyll-A Event During Summer 2015 In The South Central Red Sea, Wenzhao Li, Hesham El-Askary, K. P. Manikandan, Mohamed A. Qurban, Michael J. Garay, Olga V. Kalishnikova
Mathematics, Physics, and Computer Science Faculty Articles and Research
An anomalously high chlorophyll-a (Chl-a) event (>2 mg/m3) during June 2015 in the South Central Red Sea (17.5° to 22°N, 37° to 42°E) was observed using Moderate Resolution Imaging Spectroradiometer (MODIS) data from the Terra and Aqua satellite platforms. This differs from the low Chl-a values (<0.5 mg/m3) usually encountered over the same region during summertime. To assess this anomaly and possible causes, we used a wide range of oceanographical and meteorological datasets, including Chl-a concentrations, sea surface temperature (SST), sea surface height (SSH), mixed layer depth (MLD), ocean current velocity and aerosol optical depth (AOD) obtained from different sensors and models. Findings confirmed this anomalous behavior in the spatial domain using Hovmöller data analysis techniques, while a time series analysis addressed monthly and daily variability. Our analysis suggests that a combination of factors controlling nutrient supply contributed to the anomalous phytoplankton growth. These factors include horizontal transfer of upwelling water through eddy circulation and possible mineral fertilization from atmospheric dust deposition. Coral reefs might have provided extra nutrient supply, yet this is out of the scope of our analysis. We thought that dust deposition from a coastal dust jet event in late June, coinciding with the phytoplankton blooms in the area under investigation, might have also contributed as shown by our AOD findings. However, a lag cross correlation showed a two- month lag between strong dust outbreak and the high Chl-a anomaly. The high Chl-a concentration at the edge of the eddy emphasizes the importance of horizontal advection in fertilizing oligotrophic (nutrient poor) Red Sea waters.
Skeletal Stiffening In An Amphibious Fish Out Of Water Is A Response To Increased Body Weight, Andy J. Turko, Dietmar KüLtz, Douglas S. Fudge, Roger P. Croll, Frank M. Smith, Matthew R. Stoyek, Patricia A. Wright
Skeletal Stiffening In An Amphibious Fish Out Of Water Is A Response To Increased Body Weight, Andy J. Turko, Dietmar KüLtz, Douglas S. Fudge, Roger P. Croll, Frank M. Smith, Matthew R. Stoyek, Patricia A. Wright
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
Terrestrial animals must support their bodies against gravity, while aquatic animals are effectively weightless because of buoyant support from water. Given this evolutionary history of minimal gravitational loading of fishes in water, it has been hypothesized that weight-responsive musculoskeletal systems evolved during the tetrapod invasion of land and are thus absent in fishes. Amphibious fishes, however, experience increased effective weight when out of water – are these fishes responsive to gravitational loading? Contrary to the tetrapod-origin hypothesis, we found that terrestrial acclimation reversibly increased gill arch stiffness (∼60% increase) in the amphibious fish Kryptolebias marmoratus when loaded normally by gravity, …
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. …
Temporal Variation In Optical Properties Of Chromophoric Dissolved Organic Matter (Cdom) In Southern California Coastal Waters With Nearshore Kelp And Seagrass, Catherine D. Clark, Warren J. De Bruyn, Paige Aiona
Temporal Variation In Optical Properties Of Chromophoric Dissolved Organic Matter (Cdom) In Southern California Coastal Waters With Nearshore Kelp And Seagrass, Catherine D. Clark, Warren J. De Bruyn, Paige Aiona
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
Optical properties of chromophoric dissolved organic matter (CDOM) were measured in surf zone waters in diurnal field studies at a Southern California beach with nearshore kelp and seagrass beds and intertidal plant wrack. Absorption coefficients (aCDOM(300 nm)) ranged from 0.35 m21 to 3.7 m21 with short-term variability<1 h, increases at ebb and flood tides and higher values (6 m21) during an offshore storm event. Spectral slopes (S) ranged from 0.0028 nm21 to 0.017 nm21, with higher values after the storm; S was generally inversely correlated with aCDOM(300 nm). 3-D excitation–emission matrix spectra (EEMs) for samples with lower S values had humic-type peaks associated with terrestrial material (A, C), marine microbial material (M) and protein peaks, characteristic of freshly produced organic material. Samples with high S values had no or reduced protein peaks, consistent with aged material. Fluorescent indexes (f450/f500 >2.5, BIX>1.1) were consistent with microbial aquatic sources. Leachates of senescent kelp and seagrass had protein and humic-type EEM peaks. After solar simulator irradiation (4 h), protein peaks rapidly photochemically degraded, humic-type peak C increased in intensity and peak M disappeared. Optical characteristics of kelp leachates were most similar to field samples, …
Flexibility Of Crab Chemosensory Hairs Enables Flicking Antennules To Sniff, Lindsay D. Waldrop, Matthew A. Reidenbach, M. A. R. Koehl
Flexibility Of Crab Chemosensory Hairs Enables Flicking Antennules To Sniff, Lindsay D. Waldrop, Matthew A. Reidenbach, M. A. R. Koehl
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
The first step in smelling is capture of odorant molecules from the surrounding fluid. We used lateral flagella of olfactory antennules of crabs Callinectes sapidus to study the physical process of odor capture by antennae bearing dense tufts of hair-like chemosensory sensilla (aesthetascs). Fluid flow around and through aesthetasc arrays on dynamically scaled models of lateral flagella of C. sapidus was measured by particle image velocimetry to determine how antennules sample the surrounding water when they flick. Models enabled separate evaluation of the effects of flicking speed, aesthetasc spacing, and antennule orientation. We found that crab antennules, like those of …
Large Amplitude, Short Wave Peristalsis And Its Implications For Transport, Lindsay D. Waldrop, Laura A. Miller
Large Amplitude, Short Wave Peristalsis And Its Implications For Transport, Lindsay D. Waldrop, Laura A. Miller
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
Valveless, tubular pumps are widespread in the animal kingdom, but the mechanism by which these pumps generate fluid flow is often in dispute. Where the pumping mechanism of many organs was once described as peristalsis, other mechanisms, such as dynamic suction pumping, have been suggested as possible alternative mechanisms. Peristalsis is often evaluated using criteria established in a technical definition for mechanical pumps, but this definition is based on a small-amplitude, long-wave approximation which biological pumps often violate. In this study, we use a direct numerical simulation of large-amplitude, short-wave peristalsis to investigate the relationships between fluid flow, compression frequency, …
The Role Of The Pericardium In The Valveless, Tubular Heart Of The Tunicate, Ciona Savignyi, Lindsay D. Waldrop, Laura A. Miller
The Role Of The Pericardium In The Valveless, Tubular Heart Of The Tunicate, Ciona Savignyi, Lindsay D. Waldrop, Laura A. Miller
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
Tunicates, small invertebrates within the phylum Chordata, possess a robust tubular heart which pumps blood through their open circulatory systems without the use of valves. This heart consists of two major components: the tubular myocardium, a flexible layer of myocardial cells that actively contracts to drive fluid down the length of the tube; and the pericardium, a stiff, outer layer of cells that surrounds the myocardium and creates a fluid-filled space between the myocardium and the pericardium. We investigated the role of the pericardium through in vivo manipulations on tunicate hearts and computational simulations of the myocardium and pericardium using …
Shifts In Attack Behavior Of An Important Kelp Forest Predator Within Marine Reserves, J. S. Berriman, M. C. Kay, D. C. Reed, A. Rassweiler, D. A. Goldstein, William G. Wright
Shifts In Attack Behavior Of An Important Kelp Forest Predator Within Marine Reserves, J. S. Berriman, M. C. Kay, D. C. Reed, A. Rassweiler, D. A. Goldstein, William G. Wright
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
Marine reserves have become increasingly valuable tools with which to manage ecosystems. These reserves consistently restore populations of top predators, often reducing availability of their favored prey. We hypothesized that such prey reduction in reserves causes protected predators to alter their attack behavior to include less palatable prey, potentially amplifying top-down effects on community structure. To test this hypothesis, we presented the relatively unpalatable sea hare Aplysia californica to freely foraging spiny lobsters Panulirus interruptus in 4 marine no-take reserves, each paired with an adjacent fished area. We found that lobsters only attacked sea hares inside reserves, where lobster density …
A Dna Mini-Barcoding System For Authentication Of Processed Fish Products, Shadi Shokralla, Rosalee S. Hellberg, Sara M. Handy, Ian King, Mehrdad Hajibabaei
A Dna Mini-Barcoding System For Authentication Of Processed Fish Products, Shadi Shokralla, Rosalee S. Hellberg, Sara M. Handy, Ian King, Mehrdad Hajibabaei
Food Science Faculty Articles and Research
Species substitution is a form of seafood fraud for the purpose of economic gain. DNA barcoding utilizes species-specific DNA sequence information for specimen identification. Previous work has established the usability of short DNA sequences—mini-barcodes—for identification of specimens harboring degraded DNA. This study aims at establishing a DNA mini-barcoding system for all fish species commonly used in processed fish products in North America. Six mini-barcode primer pairs targeting short (127–314 bp) fragments of the cytochrome c oxidase I (CO1) DNA barcode region were developed by examining over 8,000 DNA barcodes from species in the U.S. Food and Drug Administration …
Scaling Of Olfactory Antennae Of The Terrestrial Hermit Crabs Coenobita Rugosus And Coenobita Perlatus During Ontogeny, Lindsay D. Waldrop, Roxanne M. Bantay, Quang V. Nguyen
Scaling Of Olfactory Antennae Of The Terrestrial Hermit Crabs Coenobita Rugosus And Coenobita Perlatus During Ontogeny, Lindsay D. Waldrop, Roxanne M. Bantay, Quang V. Nguyen
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
Although many lineages of terrestrial crustaceans have poor olfactory capabilities, crabs in the family Coenobitidae, including the terrestrial hermit crabs in the genus Coenobita, are able to locate food and water using olfactory antennae (antennules) to capture odors from the surrounding air. Terrestrial hermit crabs begin their lives as small marine larvae and must find a suitable place to undergo metamorphosis into a juvenile form, which initiates their transition to land. Juveniles increase in size by more than an order of magnitude to reach adult size. Since odor capture is a process heavily dependent on the size and speed …
Ontogenetic Scaling Of The Olfactory Antennae And Flicking Behavior Of The Shore Crab, Hemigrapsus Oregonensis, Lindsay D. Waldrop
Ontogenetic Scaling Of The Olfactory Antennae And Flicking Behavior Of The Shore Crab, Hemigrapsus Oregonensis, Lindsay D. Waldrop
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
Malacostracan crustaceans such as crabs flick antennae with arrays of olfactory sensilla called aesthetascs through the water to sense odors. Flicking by crabs consists of a quick downstroke, in which aesthetascs are deflected laterally (splayed), and a slower, reversed return stroke, in which aesthetascs clump together. This motion causes water to be flushed within and then held in between aesthetascs to deliver odor molecules to olfactory receptors. Although this odor sampling method relies on a narrow range of speeds, sizes, and specific arrangements of aesthetascs, most crabs dramatically change these during ontogeny. In this study, the morphometrics of the aesthetascs, …
A Fish Out Of Water: Gill And Skin Remodeling Promotes Osmo- And Ionoregulation In The Mangrove Killifish Kryptolebias Marmoratus, Danielle M. Leblanc, Chris M. Wood, Douglas S. Fudge, Patricia A. Wright
A Fish Out Of Water: Gill And Skin Remodeling Promotes Osmo- And Ionoregulation In The Mangrove Killifish Kryptolebias Marmoratus, Danielle M. Leblanc, Chris M. Wood, Douglas S. Fudge, Patricia A. Wright
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
The euryhaline, amphibious mangrove killifish Kryptolebias marmoratus is known to survive weeks out of water in moist environments. We tested the hypothesis that the skin is a site of osmo- and ionoregulation in K. marmoratus. We predicted that under terrestrial conditions, gill and skin remodeling would result in an enhanced role for skin and a diminished role for the gills in osmo- and ionoregulation. Fish were exposed to water—either freshwater (FW, 1‰) or hypersaline water (saltwater [SW], 45‰)—or air over a moist surface of FW or SW for 9 d and then recovered in water. When fish were emersed …
Distribution Of Allatostatin C-Like Immunoreactivity In The Central Nervous System Of The Copepod Crustacean Calanus Finmarchicus, Caroline H. Wilson, Andrew E. Christie
Distribution Of Allatostatin C-Like Immunoreactivity In The Central Nervous System Of The Copepod Crustacean Calanus Finmarchicus, Caroline H. Wilson, Andrew E. Christie
Health Sciences and Kinesiology Faculty Articles
The C-type allatostatins (C-ASTs) are a family of highly pleiotropic arthropod neuropeptides. In crustaceans, transcriptomic/mass spectral studies have identified C-ASTs in the nervous systems of many species; the cellular distributions of these peptides remain unknown. Here, the distribution of C-AST was mapped in the nervous system of the copepod Calanus finmarchicus, the major contributor to the North Atlantic’s zooplanktonic biomass; C-AST-immunopositive neurons were identified in the protocerebrum, in several peripheral ganglia associated with feeding appendages, and in the ganglia controlling the swimming legs, with immunopositive axons present throughout the ventral nerve cord. In addition, axons innervating the dorsal longitudinal …
Interspecific Variation In Palatability Suggests Cospecialization Of Antipredator Defenses In Sea Hares, Kimberly K. Takagi, Nadia N. Ono, William G. Wright
Interspecific Variation In Palatability Suggests Cospecialization Of Antipredator Defenses In Sea Hares, Kimberly K. Takagi, Nadia N. Ono, William G. Wright
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
Prey species often deploy different kinds of antipredator defenses, which can interact with each other in ways that are not yet completely understood. Much research into these interactions has utilized gastropod mollusks, usually focusing (in part) on the protective utility of the gastropod shell. This makes the evolutionary reduction of the shell in the opisthobranch gastropods (marine slugs) particularly interesting. This loss of protective function of the shell is associated with the evolution of alternative defenses. Particularly well studied are chemical defenses, especially those using secondary metabolites derived from food resources. As a first step toward understanding interspecific variation in …
Effect Of Wave Action On Movement In The Owl Limpet, Lottia Gigantea, In Santa Cruz, California, William G. Wright, James W. Nybakken
Effect Of Wave Action On Movement In The Owl Limpet, Lottia Gigantea, In Santa Cruz, California, William G. Wright, James W. Nybakken
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
The critical role of wave energy in the ecology of nearshore organisms is widely accepted, based primarily on biotic correlations over large scales of time and space. Much less is known about how large waves impact the behavioral ecology of individual organisms. Theoretical considerations and measurements of tenacity predict that intertidal gastropods should minimize the chances of dislodgement during periods of high waves by remaining stationary. We tested this prediction by observing a population of the owl limpet, Lottia gigantea G. B. Sowerby I, 1834, in a range of sea conditions. We found the proportion of the population moving during …
Inside The Rainforests Of The Sea: Coral Reefs And Their Endangerment, Roxanne Greitz Miller
Inside The Rainforests Of The Sea: Coral Reefs And Their Endangerment, Roxanne Greitz Miller
Education Faculty Articles and Research
This article focuses on coral reefs and their endangerment.
The Visceral Retia Mirabilia Of Tuna And Sharks: An Annotated Translation And Discussion Of The Eschricht And Müller 1835 Paper And Related Papers, Douglas S. Fudge, E. Don Stevens
The Visceral Retia Mirabilia Of Tuna And Sharks: An Annotated Translation And Discussion Of The Eschricht And Müller 1835 Paper And Related Papers, Douglas S. Fudge, E. Don Stevens
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
The focus of this volume is an annotated translation of the classic work by J. Müller and D.F. Eschricht on the visceral anatomy of the bluefin tuna, Thunnus thynnus, published in 1835. This text, with its outstanding figures, is to this day the definitive work on the anatomy of the bluefin viscera and especially on the circulation to and from the viscera. In addition, the text is historically important in that it represents the first comprehensive description of visceral relia mirabilia in a fish. In this work, Eschricht & Müller meticulously elucidate the pattern of blood flow to, within, …