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Evaluation Of A Pilot Land-Based Marine Integrated Aquaculture System, Suzanne Boxman Jan 2013

Evaluation Of A Pilot Land-Based Marine Integrated Aquaculture System, Suzanne Boxman

USF Tampa Graduate Theses and Dissertations

Recirculating aquaculture systems (RAS) produce aquaculture products on land with minimal discharge of waste products and minimal water loss. High costs associated with waste treatment for RAS have triggered the growth of integrated aquaculture systems (IAS) which incorporate macrophytes (aquatic plants) into the treatment train. The objective of this research was to examine a pilot scale inland marine IAS with three different methods for solids treatment: a sand filter followed by a plant bed, only a plant bed, and geotextile bags. Florida Pompano (Trachinotus carolinus) were grown along with Smooth Cordgrass (Spartina alterniflora), Black Needle Rush …

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Sustainable Production Of Swine: Putting Lipstick On A Pig?, Michelle B. Nowlin Jan 2013

Sustainable Production Of Swine: Putting Lipstick On A Pig?, Michelle B. Nowlin

Faculty Scholarship

No abstract provided.

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Physiological Level Production Of Antigen-Specific Human Immunoglobulin In Cloned Transchromosomic Cattle, A. Sano, H. Matsushita, H. Wu, J. Jiao, P. Kasinathan, E. J. Sullivan, Z. Wang, Y. Kuroiwa Jan 2013

Physiological Level Production Of Antigen-Specific Human Immunoglobulin In Cloned Transchromosomic Cattle, A. Sano, H. Matsushita, H. Wu, J. Jiao, P. Kasinathan, E. J. Sullivan, Z. Wang, Y. Kuroiwa

Animal, Dairy, and Veterinary Science Faculty Publications

Therapeutic human polyclonal antibodies (hpAbs) derived from pooled plasma from human donors are Food and Drug Administration approved biologics used in the treatment of a variety of human diseases. Powered by the natural diversity of immune response, hpAbs are effective in treating diseases caused by complex or quickly-evolving antigens such as viruses. We previously showed that transchromosomic (Tc) cattle carrying a human artificial chromosome (HAC) comprising the entire unrearranged human immunoglobulin heavy-chain (hIGH) and kappa-chain (hIGK) germline loci (named as κHAC) are capable of producing functional hpAbs when both of the bovine immunoglobulin mu heavy-chains, bIGHM and bIGHML1, are homozygously …

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Effect Of Laser Ablation Depth In Otolith Life History Scans, Renée R. Hoover, Cynthia M. Jones Jan 2013

Effect Of Laser Ablation Depth In Otolith Life History Scans, Renée R. Hoover, Cynthia M. Jones

OES Faculty Publications

Life history scans of fish otoliths are bringing new insight into the structure, connectivity, and movement of fish populations. Data obtained from such scans, however, possess in-herent limitations that have not yet been fully addressed or understood. For example, several investigators have noted delays in otolith elemental uptake that do not appear to reflect habitat exposure. We hypothesized that the 3-dimensional structure of otoliths may produce sampling artifacts in the results obtained from laser ablation scans. To test this hypothesis, we sampled sagittal otoliths from juvenile Atlantic croaker Micropogonias undulatus with laser ablation inductively coupled plasma mass spectrometry to obtain …

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The Influence Of Different Cover Types On American Robin Nest Success In Organic Agroecosystems, John E. Quinn, Amy Oden, James R. Brandle Jan 2013

The Influence Of Different Cover Types On American Robin Nest Success In Organic Agroecosystems, John E. Quinn, Amy Oden, James R. Brandle

Biology Publications

There are many opportunities for biodiversity conservation in organic farm systems. Successful and sustainable conservation efforts in organic systems, however, need to measure appropriate outcomes. In particular, data are needed on the breeding success of associated wildlife species. We measured nesting success of the American Robin (Turdus migratorius) in woodlands embedded within eight organic farms in eastern Nebraska. We modeled daily nest survival rate to identify land use and land cover patterns that optimize conservation of birds in organic farm systems. The percentage of a crop in the fields adjacent to linear woodlands best predicted daily survival rate. …

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Influence Of Latitude On The Winter Abundance Of Red-Tailed Hawks (Buteo Jamaicensis) And American Kestrels (Falco Sparverius) In Illinois, Given Harper, Anna Groves, Vic Berardi, Paul Sweet, Jance Sweet, Angelo Capparella Jan 2013

Influence Of Latitude On The Winter Abundance Of Red-Tailed Hawks (Buteo Jamaicensis) And American Kestrels (Falco Sparverius) In Illinois, Given Harper, Anna Groves, Vic Berardi, Paul Sweet, Jance Sweet, Angelo Capparella

Scholarship

We use five years of data from 18 routes surveyed to determine the temporal stability of a first reported 100 years pattern, and reconfirmed that the abundance of winter 50 years ago tailed Hawk and American Kestrel decreases with increasing latitude, being more high in the central regions of Illinos in the northern regions. Trained volunteers conducted sampling ( n  = 143) a month driving along selected routes from December to February, from 2004-2005 to 2008-2009. We found significant increases in the abundance of both species from the northern regions to the central regions of Illinois. No significant effects of …

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Exploring The Sulfide Tolerance Of Ectosymbiotic Niphargus Amphipods From The Frasassi Caves, Central Italy, Jan Bauermeister, Karoline Assig, Sharmishtha Dattagupta Jan 2013

Exploring The Sulfide Tolerance Of Ectosymbiotic Niphargus Amphipods From The Frasassi Caves, Central Italy, Jan Bauermeister, Karoline Assig, Sharmishtha Dattagupta

International Journal of Speleology

Two species of the crustacean amphipod genus Niphargus inhabit the sulfidic groundwaters of the Frasassi caves in central Italy, and both harbor filamentous, sulfide-oxidizing Thiothrix ectosymbionts. As sulfide is toxic to most aerobic organisms, it appeared possible that the ectosymbionts could help their Niphargus hosts with detoxification processes. In this study, mortality due to sulfide was compared between Niphargus individuals with ectosymbionts and individuals whose ectosymbionts had been killed by antibiotic treatment. Both Frasassi-dwelling Niphargus species revealed exceptionally high tolerances to sulfide compared to other amphipod species studied so far. Niphargus individuals without viable ectosymbionts tolerated sulfide levels exceeding those …

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Yogurt Cultured Milk Powder As A Substitute For Yogurt Powder, Lijie Song Jan 2013

Yogurt Cultured Milk Powder As A Substitute For Yogurt Powder, Lijie Song

LSU Master's Theses

Commercial yogurt powder has to go through drying process which kills the yogurt culture, so the health benefit of the yogurt culture bacteria are lost. Also, upon reconstitution commercial yogurt powder does not taste like yogurt, it is sour and off flavored. The hypothesis of this study was that yogurt cultured milk powder would have better culture bacterial counts, better physico-chemical and sensory characteristics than commercial yogurt powder currently available. Commercial yogurt powder (CYP) was the control and yogurt cultured milk powder (YCMP) was the treatment. Freeze-dried yogurt starter culture (Lactobacillus bulgaricus and Streptococcus thermophilus at ratio 1:1) was added …

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Influence Of Various Health Beneficial Spices On Some Characteristics Of Yogurt Culture Bacteria Lactobacillus Acidophilus, And Sensor Acceptability Of Spicy Probiotic Yogurt, Margie Michelle Sanchez-Vega Jan 2013

Influence Of Various Health Beneficial Spices On Some Characteristics Of Yogurt Culture Bacteria Lactobacillus Acidophilus, And Sensor Acceptability Of Spicy Probiotic Yogurt, Margie Michelle Sanchez-Vega

LSU Doctoral Dissertations

There is a pronounced public awareness about herbal remedies. Garlic and ginger have antibacterial properties and prevent cardiovascular diseases. Onion and turmeric decrease the risk of diabetes and like garlic, they have anticancer properties. Streptococcus thermophilus, Lactobacillus bulgaricus and Lactobacillus acidophilus are lactic acid bacteria that produce lactase and reduce the symptoms of malabsorption. Earlier work has shown the influence of spice extracts but the influence of pure spice juice on yogurt culture bacteria is not known. Characteristics of yogurt culture bacteria were measured by suspending freshly thawed cultures in 0.1% peptone water (growth), acidified MRS broth (acid tolerance), MRS-Thio …

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Influence Of "Added" Whey Protein Isolate On Probiotic Properties Of Yogurt Culture Bacteria And Yogurt Characteristics, Luis Alfonso Vargas Lopez Jan 2013

Influence Of "Added" Whey Protein Isolate On Probiotic Properties Of Yogurt Culture Bacteria And Yogurt Characteristics, Luis Alfonso Vargas Lopez

LSU Master's Theses

Consumers are becoming conscious of their diet, increasing protein intake and avoiding carbohydrates and fats. Whey proteins have branch chain amino acids responsible for muscle building. Whey protein isolate (WPI) contains more than 90% protein. The effect of incremental addition of WPI on probiotic characteristics of pure cultures and cultures in yogurt and yogurt characteristics are not known. The hypothesis was that “added” WPI will influence the characteristics of yogurt culture bacteria in pure form and in yogurt. The objectives were: to determine the influence of added WPI on (1) acid and bile tolerance, growth and protease activity of pure …

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Investigation Of Condition Effects On Batch Fecundity Of The Common Snook, Centropomus Undecimalis, In Tampa Bay, Florida, Catherine Michelle Bruger Hayslip Jan 2013

Investigation Of Condition Effects On Batch Fecundity Of The Common Snook, Centropomus Undecimalis, In Tampa Bay, Florida, Catherine Michelle Bruger Hayslip

USF Tampa Graduate Theses and Dissertations

Common snook, Centropomus undecimalis, is a popular game fish species that occurs throughout central and southern Florida, yet many questions remain unanswered regarding their reproductive strategies, including estimates of fecundity with relation to size, age, and condition of the female. These relationships are critical to improving stock assessments and fundamental to estimating spawning potential ratio, the measure by which snook are managed. Spawning snook were collected from a known spawning site, Rattlesnake Key, Tampa Bay, Florida, during three consecutive spawning seasons (2009-2011) and batch fecundity for snook was reported for the first time. Of the 43 females suitable for fecundity …

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A Genomic And Quantitative Evaluation Of Modern Charolais Sired Calves Versus Multigenerational Angus Sired Calves For Growth And Carcass Quality And Compostion Traits, Jennifer Lynn Bailey Jan 2013

A Genomic And Quantitative Evaluation Of Modern Charolais Sired Calves Versus Multigenerational Angus Sired Calves For Growth And Carcass Quality And Compostion Traits, Jennifer Lynn Bailey

LSU Master's Theses

The objective of this study is to evaluate the association of single nucleotide polymorphisms with growth, performance, and carcass quality and composition characteristics in a population of cattle consisting of multigenerational Angus sired calves and modern characteristic Charolais sired calves. A total of 132 calves were evaluated. Due to a limited sample population statistical difference was set at p ˂ 0.05 and statistical trends were set at p ˂ 0.1. Mean birth weights were significantly higher for Charolais sired calves as compared to Angus sired calves. Significant differences were observed between the two breed types for mean weaning weights with …

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Vitrification Of Equine Expanded Blastocysts, Fabian Andres Diaz Jan 2013

Vitrification Of Equine Expanded Blastocysts, Fabian Andres Diaz

LSU Master's Theses

The cryopreservation of equine expanded blastocysts (>300 um) has been largely unsuccessful primarily due to the low permeability to cryoprotectants and the large size of the equine embryo. Mechanical alternatives may provide means to overcome the capsule barrier and the relative large embryo size. In this regard, multiple experiments were performed in this study to evaluate different approaches of capsule puncture and blastocoele fluid extraction with the objective to develop a cryopreservation protocol for Day 8 equine expanded blastocysts. In the first experiment, twenty-four Day 8 expanded blastocysts were exposed to standard equine embryo vitrification solutions following one- or …

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Effects Of Meal Timing On Growth Hormones, Ghrelin, And Insulin Sensitivity In Male Holstein Calves, Erica Lynn Chartier Jan 2013

Effects Of Meal Timing On Growth Hormones, Ghrelin, And Insulin Sensitivity In Male Holstein Calves, Erica Lynn Chartier

LSU Master's Theses

Eighteen neonatal Holstein bull calves (38.85 ± 4.71 kg) were assigned to one of two treatments at birth to determine the effect of feeding time on growth, nutrient intake, metabolic hormone secretion, and energy metabolism. Regularly fed calves (n = 9) were fed MR daily at 0630 h, and irregularly fed calves (n = 9) at 1030, 0800, 0630, 0830, 0530, 0930, and 0730 Monday through Sunday. Body weights were measured weekly from birth to 9 weeks. Water intake, fecal scores, and starter intake were measured daily. Serial blood collections were conducted at 2, 4, 6, and 8 weeks for …

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The Debate On Marine Mammals In Captivity, Lorna C. Scribner Dec 2012

The Debate On Marine Mammals In Captivity, Lorna C. Scribner

Honors Theses

Are marine mammal species better off today because of captivity? Is captivity ethical and should it be continued? As this debate grows stronger, both of these sides of the argument offer substantial evidence in their favor. In this paper, I discuss data for both sides and evaluate the justifications of marine mammal captivity. Ideally, no matter the outcome, this research will educate the public on influential factors of wild and captive populations.

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Transcriptome And Methylation Analysis Of Gossypium Petal Tissue, Aditi Rambani Dec 2012

Transcriptome And Methylation Analysis Of Gossypium Petal Tissue, Aditi Rambani

Theses and Dissertations

Polyploidization instantly doubles all genome content by combining two genomes that have markedly different methylation and gene expression levels. This process may be accompanied by genetic and epigenetic changes in each genome. Sequencing of the transcriptome (RNA-seq) and the methylome (bisulfite treated libraries whole genome libraries) were used to measure gene expression and methylation levels of genic regions of allopolyploid cotton petals and petals of their diploid relatives. Many differentially expressed genes detected by RNA-seq were consistent with expression levels previously detected by microarrays. RNA-seq results also reconfirmed the presence of general polyploid gene expression trends like expression level dominance …

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Transcriptome Analysis Of Drought Induced Stress In Chenopodium Quinoa, Joshua Arthur Raney Dec 2012

Transcriptome Analysis Of Drought Induced Stress In Chenopodium Quinoa, Joshua Arthur Raney

Theses and Dissertations

RNA-seq transcriptome analysis of Chenopodium quinoa at different water treatment levels was conducted in a greenhouse study using four water treatments (field capacity to drought) on a valley ecotype quinoa (variety Ingapirca) and an Altiplano Salares ecotype quinoa (variety Ollague). Physiological results support the earlier findings that the Salares ecotypes display greater tolerance to drought-like stress conditions than the valley ecotypes (as determined by growth rate, photosynthetic rate, stomatal conductance, and stem water potential). cDNA libraries from root tissue sample for each treatment x variety combination were sequenced using Illumina Hi-Seq technology in an RNA-seq experiment. De novo assembly of …

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Thin Soils And Sacbes: The Soil Resources Of Uci, Yucatan, Mexico, Zachary S. Larsen Dec 2012

Thin Soils And Sacbes: The Soil Resources Of Uci, Yucatan, Mexico, Zachary S. Larsen

Theses and Dissertations

The objective of this study was to use pedological evidence in conjunction with Geographic Information Systems, and soil physical and chemical analyses as means to better understand the agricultural landscape surrounding the ancient Maya city of Uci. Specifically, the query of this thesis is to determine whether there is an association between settlement density and soil resources, and what relationship if any there is between the ancient sacbe of Uci and its surrounding agricultural potential. Stable carbon isotope analysis of the humin fraction of the soil organic matter was conducted on several profiles from karst depressions known as rejolladas near …

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Cultural Thinning Of Native Sagebrush Stands To Increase Seed Yields, Kurt David Elder Dec 2012

Cultural Thinning Of Native Sagebrush Stands To Increase Seed Yields, Kurt David Elder

Theses and Dissertations

Wyoming big sagebrush (Artemisia tridentata Nutt.) is an important native shrub in the Great Basin because of its wide distribution where it dominates over 60 million ha and provides essential habitat and forage for many varied species. The hand collection of sagebrush seed often results in seed scarcity and the available seed quantities are at times inadequate to revegetate large areas that have been disturbed, resulting in a demand for sagebrush seed. Study locations were selected near Scipio and Sahara sand dunes of Utah, and treatments were 1-) control, no treatment applied area left undisturbed 2-) general chemical strip …

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Five New Species Of Chaerilus Simon, 1877 From China, Indonesia, Malaysia, Philippines, Thailand, And Vietnam (Scorpiones: Chaerilidae), František Kovařík Dec 2012

Five New Species Of Chaerilus Simon, 1877 From China, Indonesia, Malaysia, Philippines, Thailand, And Vietnam (Scorpiones: Chaerilidae), František Kovařík

Euscorpius

Chaerilus cimrmani sp. n. from Thailand, C. seiteri sp. n. from Philippines (Negros Island), C. solegladi sp. n. from Indonesia and Malaysia (Borneo Island), C. terueli sp. n. from Vietnam (Côn Son Island), and C. wrzecionkoi sp. n. from China (Tibet) are described. A key to all species of the genus Chaerilus Simon, 1877 is also presented.

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Three New Species Of Compsobuthus Vachon, 1949 From Yemen, Jordan, Israel, And Somaliland (Scorpiones: Buthidae), František Kovařík Dec 2012

Three New Species Of Compsobuthus Vachon, 1949 From Yemen, Jordan, Israel, And Somaliland (Scorpiones: Buthidae), František Kovařík

Euscorpius

Compsobuthus krali sp. n. of the werneri group from Yemen, C. levyi sp. n. of the werneri group from Jordan and Israel, and C. somalilandus sp. n. of the acutecarinatus group from Somaliland are described. A key to all species of the genus Compsobuthus Vachon, 1949 is presented.

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Improving Phosphorus Use Efficiency Through Organically Bonded Phosphorus, Micheal W. Hill Dec 2012

Improving Phosphorus Use Efficiency Through Organically Bonded Phosphorus, Micheal W. Hill

Theses and Dissertations

Current maximum efficiency of phosphorus (P) fertilizers that is utilized by plants in the same year of application ranges from near zero to thirty percent. Despite low utilization of P in crop production, yields are often limited by P deficiencies. Innovative technology is requisite to achieve greater efficiency as fertilizer demands are increasing, while phosphorus mineral resources are rapidly being depleted. A growing environmental concern for nutrient pollution of surface waters also carries significant weight. A novel new product, Carbond® P, is promising technology to increase P use efficiency. Research is needed to understand its capabilities and the functioning mechanisms …

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A Survey Of Invasive Exotic Ants Found On Hawaiian Islands: Spatial Distributions And Patterns Of Association, Camie Frandsen Martin Dec 2012

A Survey Of Invasive Exotic Ants Found On Hawaiian Islands: Spatial Distributions And Patterns Of Association, Camie Frandsen Martin

Theses and Dissertations

An intensive sampling of all ant species encountered on 6 Hawaiian Islands: Big Island, Maui, Oahu, Kauai, Molokai, and Lanai took place between 1988 and 1996. Species presence and absence was recorded at each site. Using remote sensing, variables were added insitu and used throughout my analysis. Species accumulation curves suggest that sampling was comprehensive. There is a significant trend between island area and species richness which validates the Theory of Island Biogeography for invasive species. Islands were found to be significantly nested by area, order, and tourism. Cluster analysis shows a link between elevation, land-use and island, and species …

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Summer Watering Patterns Of Mule Deer And Differential Use Of Water By Bighorn Sheep, Elk, Mule Deer, And Pronghorn In Utah, Andrew V. Shields Dec 2012

Summer Watering Patterns Of Mule Deer And Differential Use Of Water By Bighorn Sheep, Elk, Mule Deer, And Pronghorn In Utah, Andrew V. Shields

Theses and Dissertations

Changes in the abundance and distribution of free (drinking) water can influence wildlife in arid regions. In the western USA, free water is considered by wildlife managers to be important for bighorn sheep (Ovis canadensis), elk (Cervus elaphus), mule deer (Odocoileus hemionus), and pronghorn (Antilocapra americana). Nonetheless, we lack information on the influence of habitat and landscape features surrounding water sources, including wildlife water developments, and how these features may influence use of water by sexes differently. Consequently, a better understanding of differential use of water by the sexes could influence the conservation and management of those ungulates and water …

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Habitat Selection Of Greater Sage-Grouse Centrocercus Urophasianus And Northern River Otters Lontra Canadensis In Utah, Matthew D. Westover Dec 2012

Habitat Selection Of Greater Sage-Grouse Centrocercus Urophasianus And Northern River Otters Lontra Canadensis In Utah, Matthew D. Westover

Theses and Dissertations

Greater sage-grouse populations have decreased steadily since European settlement in western North America. Reduced availability of brood-rearing habitat has been identified as a limiting factor for many populations. We used radio-telemetry to acquire locations of sage-grouse broods from 1998 to 2012 in Strawberry Valley, Utah. Using these locations and remotely-sensed imagery, we proceeded to 1) determine which features of brood-rearing habitat could be identified using widely available, fine-scale imagery 2) assess the scale at which sage-grouse selected brood-rearing habitat in our study area, and 3) create a predictive habitat model that could be applied across our large study area to …

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Alteration Of Behavior By Desert Bighorn Sheep From Human Recreation And Desert Bighorn Sheep Survival In Canyonlands National Park: 2002 - 2010, Kanalu K. Sproat Dec 2012

Alteration Of Behavior By Desert Bighorn Sheep From Human Recreation And Desert Bighorn Sheep Survival In Canyonlands National Park: 2002 - 2010, Kanalu K. Sproat

Theses and Dissertations

Human encroachment into wilderness areas can influence the persistence of wildlife populations by decreasing and degrading habitat, displacement, and decreasing survival. For bighorn sheep (Ovis canadensis), some human activities are detrimental, causing both physiological stress and habitat abandonment. Between 1979 and 2000, human recreation has increased over 300% in areas occupied by desert bighorn sheep (O. c. nelsonii) in southeastern Utah. We investigated if an increase in human activity in areas used by bighorns affected their behavior. We observed 34 bighorn sheep using focal-animal sampling for >14 hrs to compare time spent grazing and scanning between areas of high and …

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Benchmarking Cow Comfort On North American Freestall Dairies: Lameness, Leg Injuries, Lying Time, Facility Design, And Management For High-Producing Holstein Dairy Cows, Marina A.G. Von Keyserlingk, A. K. Barrientos, K. Ito, E. Galo, Daniel M. Weary Dec 2012

Benchmarking Cow Comfort On North American Freestall Dairies: Lameness, Leg Injuries, Lying Time, Facility Design, And Management For High-Producing Holstein Dairy Cows, Marina A.G. Von Keyserlingk, A. K. Barrientos, K. Ito, E. Galo, Daniel M. Weary

Housing and Confinement of Farm Animals Collection

In this paper, we describe a novel approach to corporate involvement in on-farm assessment, driven by the desire to provide a service for dairy producers and to create a vehicle for engagement on issues of dairy cow welfare. This program provides producers with feedback on animal-based (including gait score, leg injuries, and lying time) and facility-based (including freestall design, bedding practices, feed bunk design and management, and stocking density) measures that can be used to better address their management goals. The aim of this paper is to describe variation in the prevalence of lameness and leg injuries, lying behavior, facility …

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Winter Microhabitat Foraging Preferences Of Sympatric Boreal And Black-Capped Chickadees In Michigan's Upper Peninsula, Alec R. Lindsay Ph. D., Zach G. Gayk Dec 2012

Winter Microhabitat Foraging Preferences Of Sympatric Boreal And Black-Capped Chickadees In Michigan's Upper Peninsula, Alec R. Lindsay Ph. D., Zach G. Gayk

Faculty Works

We examined differences in microhab- itat use between Boreal (Poecile hudsonicus) and Black- capped chickadees (P. atricapillus) where they co-occur near Marquette, Michigan, USA. Twenty-four Boreal and 37 Black-capped chickadees were followed during 60 hrs of field observation. Boreal Chickadees foraged only in three conifer species, 76% of which were black spruce (Picea mariana), while Black-capped Chickadees foraged widely across six coniferous and three deciduous tree species. Analysis of foraging data categorized by zones within conifer trees indicated high niche overlap (0.676) between Boreal and Black-capped chickadees across all foraging zones. Individual comparisons on a zone-by-zone basis revealed a significant …

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Cues Used By The Black Fly, Simulium Annulus, For Attraction To The Common Loon (Gavia Immer), Meggin L. Weinandt, Michael W. Meyer, R. Mac Strand, Alec R. Lindsay Ph. D. Dec 2012

Cues Used By The Black Fly, Simulium Annulus, For Attraction To The Common Loon (Gavia Immer), Meggin L. Weinandt, Michael W. Meyer, R. Mac Strand, Alec R. Lindsay Ph. D.

Faculty Works

The parasitic relationship between a black fly, Simulium annulus, and the common loon (Gavia immer) has been considered one of the most exclusive relationships between any host species and a black fly species. To test the host specificity of this blood-feeding insect, we made a series of bird decoy presentations to black flies on loon-inhabited lakes in northern Wisconsin, U.S.A. To examine the importance of chemical and visual cues for black fly detection of and attraction to hosts, we made decoy presentations with and without chemical cues. Flies attracted to the decoys were collected, identified to species, and quantified. Results …

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Influences Of A Cladophora Bloom On The Diets Of Amblema Plicata And Elliptio Dilatata In The Upper Green River, Kentucky, Jennifer Maria Yates Dec 2012

Influences Of A Cladophora Bloom On The Diets Of Amblema Plicata And Elliptio Dilatata In The Upper Green River, Kentucky, Jennifer Maria Yates

Masters Theses & Specialist Projects

Freshwater mussels are the most imperiled group of freshwater invertebrates globally. Recent research suggests a better understanding of mussel feeding ecology may facilitate and improve conservation efforts. The use of stable isotopes is becoming an increasingly common method to study aquatic food webs. Carbon (C) and nitrogen (N) are two of the most frequently employed elements in food web studies. Differences in natural abundance of 13C/12C can indicate which food sources are the basal sources of carbon incorporated into a consumer’s tissue, while the ratio of 15N /14N provides a method of assessing trophic …

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