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Articles 1 - 5 of 5
Full-Text Articles in Life Sciences
Ecological Correlates Of Alligator Snapping Turtle Bite Performance, Ashley Herrin Gagnon
Ecological Correlates Of Alligator Snapping Turtle Bite Performance, Ashley Herrin Gagnon
MSU Graduate Theses
The Alligator Snapping Turtle (Macrochelys temminckii) is one of many turtle species facing conservation challenges. Nearly extirpated in the 1980s, it is currently the subject of a head-start initiative, of which, any lasting behavioral or physiological effects were—until now—unknown! To evaluate the ability of captive-reared individuals to excel in natural habitats, and to foresee any future research or conservation challenges regarding this animal, I explored a suite of variables that influence bite performance and behaviors including captive or free-ranging status, and environmental conditions including body temperature and season. My results indicated that free-ranging M. temminckii outperform those residing …
An Assessment Of Inp/Zns As Potential Anti-Cancer Therapy: Quantum Dot Treatment Induces Stress On Hela Cells, Victoria Grace Davenport
An Assessment Of Inp/Zns As Potential Anti-Cancer Therapy: Quantum Dot Treatment Induces Stress On Hela Cells, Victoria Grace Davenport
MSU Graduate Theses
Indium Phosphide/Zinc Sulfide (InP/ZnS) quantum dots (QDs) are an emerging option in QD technologies for uses of fluorescent imaging as well as targeted drug and anti-cancer therapies based on their customizable properties. In this study we explored effects of InP/ZnS when treated with HeLa cervical cancer cells. We employed XTT viability assays, reactive oxygen species (ROS) analysis, and apoptosis analysis to better understand cytotoxicity extents at different concentrations of InP/ZnS. In addition, we compared the transcriptome profile from the QDtreated HeLa cells with that of untreated HeLa cells to identify changes to the transcriptome in response to the QD. Intracellular …
Corbicula Fluminea Effects On Survival, Growth, And Drift Of Juvenile Lampsilis Siliquoidea In Laboratory Exposures, Allison Nicole Sieja
Corbicula Fluminea Effects On Survival, Growth, And Drift Of Juvenile Lampsilis Siliquoidea In Laboratory Exposures, Allison Nicole Sieja
MSU Graduate Theses
The Asian clam, Corbicula fluminea, is an invasive species that is abundant and often co-occurs with native freshwater mussels. Corbicula is widely suspected of having negative effects on native mussels, but few studies have empirically tested this hypothesis. I used laboratory experiments to evaluate how adult Corbicula affected the survivorship, growth, and drift of juvenile Lampsilis siliquoidea. Survival and growth of newly metamorphosed mussels were tested in downwelling flow-through chambers with glass-bead substrate. Treatments were control (no clams), small adult clams, or large adult clams. After 28 days, large clams slightly but significantly reduced the number of juveniles …
On The Rocks: Changes In Substrate Alter Antipredator Behavior In Benthic Stream Fish, Sarah White
On The Rocks: Changes In Substrate Alter Antipredator Behavior In Benthic Stream Fish, Sarah White
MSU Graduate Theses
Natural selection should strongly favor characteristics that make prey difficult for predators to distinguish from the background, including both morphological and behavioral crypsis. The Rainbow Darter (Etheostoma caeruleum) is a small, cryptic, benthic fish that inhabits gravel-bottomed streams and is preyed upon by predators such as the benthic Knobfin Sculpin (Cottus immaculatus) and the pelagic Longear Sunfish (Lepomis megalotis). In three experiments, I tested whether the behavior of darters was influenced by the opportunity for crypticity offered by their substrate and by the presence of cues from benthic and pelagic predators. First, darters in …
Effects Of Heavy Metal Pollution On The Antipredator Behavior Of Orangethroat Darters (Etheostoma Spectabile), Caleb S. O'Neal
Effects Of Heavy Metal Pollution On The Antipredator Behavior Of Orangethroat Darters (Etheostoma Spectabile), Caleb S. O'Neal
MSU Graduate Theses
Heavy metal pollution can have numerous negative impacts on stream fishes, including both lethal and sublethal effects. Because of the sensitivity of fishes to toxins, they are excellent environmental indicators of stream and watershed health. The Tri-State Mining District is a Superfund site located in parts of Missouri, Kansas and Oklahoma that offers a good opportunity to study sublethal effects of heavy metal pollutants on fish behavior. I observed the antipredator behavior of Orangethroat Darters (Etheostoma spectabile) from 3 streams that varied in the abundance of heavy metal pollutants. In the lab, darters from the most polluted site …