Animal Sciences Commons^™

Movement And Habitat Use Of Two Aquatic Turtles (Graptemys Geographic And Trachemys Scripta) In An Urban Landscape, Travis J. Ryan, C A. Conner, B A. Douthitt, S C. Sterrett, Carmen M. Salsbury

Travis J. Ryan

Our study focuses on the spatial ecology and seasonal habitat use of two aquatic turtles in order to understand the manner in which upland habitat use by humans shapes the aquatic activity, movement, and habitat selection of these species in an urban setting. We used radiotelemetry to follow 15 female Graptemys geographica (common map turtle) and each of ten male and female Trachemys scripta (red-eared slider) living in a man-made canal within a highly urbanized region of Indianapolis, IN, USA. During the active season (between May and September) of 2002, we located 33 of the 35 individuals a total of …

Extrusion Of Aquafeeds Containing Corn Distillers Dried Grains With Solubles (Ddgs) For Nile Tilapia, Kurt A. Rosentrater, Mehmet C. Tulbek

Kurt A. Rosentrater

As the global population grows, there is an increasing need to produce food; aquaculture can help meet some of this growing demand. The majority of protein for aquafeeds is fish meal. But due to growing costs and potential scarcity of fish meal supplies in coming years, there is an impending need to find alternative protein sources. DDGS, a coproduct of the fuel ethanol industry, may be suitable for this purpose. The objective of this study was to examine the effect of extrusion processing conditions on two feed blends containing DDGS and other ingredients. Based on previous research, two optimized aquafeeds …

Movement And Habitat Use Of Two Aquatic Turtles (Graptemys Geographica And Trachemys Scripta) In An Urban Landscape, Travis J. Ryan, Christopher A. Conner, Brooke A. Douthitt, Sean C. Sterrett, Carmen M. Salsbury

Carmen M. Salsbury

Our study focuses on the spatial ecology and seasonal habitat use of two aquatic turtles in order to understand the manner in which upland habitat use by humans shapes the aquatic activity, movement, and habitat selection of these species in an urban setting. We used radiotelemetry to follow 15 female Graptemys geographica (common map turtle) and each of ten male and female Trachemys scripta (red-eared slider) living in a man-made canal within a highly urbanized region of Indianapolis, IN, USA. During the active season (between May and September) of 2002, we located 33 of the 35 individuals a total of …

Reproductive Energetics Of Adult Male Yellow- Bellied Marmots (Marmota Flaviventris), Carmen M. Salsbury, K. B. Armitage

Carmen M. Salsbury

We examined the energy expenditure of adult male yellow-bellied marmots and its relationship to various female-defense characteristics critical to male reproductive success. Resting metabolic rates of males were estimated in the laboratory via oxygen-consumption analysis, and field metabolic rates were estimated using a doubly Labeled water technique. Male home-range size, number of females defended by males, dispersion of females in the habitat, and date into the active season were considered to be predictors of male energy expenditure in excess of maintenance costs (field metabolic rate minus resting metabolic rate). Energy expenditure was best explained by a defensibility index based on …

Effects Of Processing Conditions On Single Screw Extrusion Of Feed Ingredients Containing Ddgs, Nehru Chevanan, Kurt A. Rosentrater, Kasiviswanathan Muthukumarappan

Kurt A. Rosentrater

Distillers dried grains with solubles (DDGS), a feed coproduct from the fuel ethanol industry, has been shown to be a viable potential alternative protein source for aquaculture feeds. To investigate this, three isocaloric (3.5kcal/g) ingredient blends containing 20, 30, and 40% DDGS, with a net protein adjusted to 28% (wet basis, wb), were prepared for use as Nile tilapia feed. Extrusion processing was then conducted using three DDGS contents (20, 30, and 40%, wb), three moisture contents (15, 20, and 25%, wb), three barrel temperature gradients (90–100–100°C, 90–130–130°C, and 90–160–160°C), and five screw speeds (80, 100, 120, 140, and 160rpm) …

Twin Screw Extrusion Of Ddgs-Based Aquaculture Feeds, S. Kannadhason, Kurt A. Rosentrater, Kasiviswanathan Muthukumarappan, Michael L. Brown

Kurt A. Rosentrater

Six isocaloric (3.65 kcal/g), isonitrogenous (35% dry-basis [db] protein), ingredient blends were prepared with 0, 17.5, 20, 22.5, 25, and 27.5% distiller’s dried grains with solubles (DDGS) and other ingredients (soybean meal, corn, fish meal, whey, soybean oil, vitamin and mineral mix). The blends were moisture balanced to 15% db, then extruded in a twin screw extruder using a 2 mm die at 190 rpm, and a 3 mm die at 348 rpm. Analyses of the extrudates included moisture content, expansion ratio, unit density, bulk density, sinking velocity, color (L*, a*, and b*), water absorption, water solubility, and pellet durability …

Management Effects On Breeding And Foraging Numbers And Movements Of Double-Crested Cormorants In The Les Cheneaux Islands, Lake Huron, Michigan, Brian S. Dorr, Tony Aderman, Peter H. Butchko

Brian S Dorr

No abstract provided.

On Blushing, Lee T. Nutini

Lee T Nutini

Guided by Darwin's writing, an intensive look at one of the most interesting and inexplicable phenomenons of human emotion.

Evaluation Of Frontline Demonstration Of Greengram (Vigna Radiata L.) In Sundarbans, West Bengal, Ganesh Chandra

Ganesh Chandra

Green gram (mungbean) is one of the important pulse crop in India, which plays a major role in augmenting the income of small and marginal farmers of Sundarban. The prevalent farming situation in Sundarban areas being characterised by kharif season with paddy cultivation in rain-fed condition and water requirement for growing rabi and summer crops are met only through residual soil moisture and/or stored rain-water. The low production of traditional varieties of greengram was a cause of concern for the farmers at large. To overcome this problem of low yield, Krishi Vigyan Kendra of CIFRI has conducted frontline demonstration field …

Effects Of Vermicomposting Duration To Macronutrient Elements And Heavy Metals Concentrations In Vermicompost, Adi Ainurzaman Jamaludin, Noor Zalina Mahmood

Adi Ainurzaman Jamaludin

Vermicomposting using Lumbricus rubellus was conducted in two different durations, 10 and 30 weeks in the same plots. Three different of treatments combination were prepared with eight replicates for each treatment namely cow dung : kitchen waste in 30:70 ratio (T1), cow dung : coffee grounds in 30:70 ratio (T2), and cow dung : kitchen waste : coffee grounds in 30:35:35 ratio (T3). Macronutrients elements in the vermicompost from each treatment were measured in the tenth and thirtieth week. Comparatively longer duration of vermicomposting by using Lumbricus rubellus enhanced the quality of vermicompost by the increase of the macronutrient elements …

Farm Focus - Spring 2010, Brian K. Whitlock, Matt Welborn, Maria Prado, Amy Plummer

Brian K Whitlock, PhD, DVM, DACT

No abstract provided.

The Tick Saliva Protein, Salp15, Contributes To Th17-Induced Pathology During Experimental Autoimmune Encephalomyelitis, Juan Anguita, I.J. Juncadella, T.C. Bates, R. Suleiman, A. Monteagudo-Mera, C.M. Olson, N. Navasa, E.R. Olivera, C. Teuscher, B.A. Osborne

Juan Anguita

No abstract provided.

Early Cranial Patterning In The Direct-Developing Frog Eleutherodactylus Coqui Revealed Through Gene Expression, Ryan Kerney, Joshua Gross, James Hanken

Ryan Kerney

Genetic and developmental alterations associated with the evolution of amphibian direct development remain largely unexplored. Specifically, little is known of the underlying expression of skeletal regulatory genes, which may reveal early modifications to cranial ontogeny in direct-developing species. We describe expression patterns of three key skeletal regulators (runx2, sox9, and bmp4) along with the cartilage-dominant collagen 2a1 gene (col2a1) during cranial development in the direct- developing anuran, Eleutherodactylus coqui. Expression patterns of these regulators reveal transient skeletogenic anlagen that correspond to larval cartilages, but which never fully form in E. coqui. Suprarostral anlagen in the frontonasal processes are detected through …

Bees In America: How The Honey Bee Shaped A Nation, Tammy Horn

Tammy Horn

" Honey bees--and the qualities associated with them--have quietly influenced American values for four centuries. During every major period in the country's history, bees and beekeepers have represented order and stability in a country without a national religion, political party, or language. Bees in America is an enlightening cultural history of bees and beekeeping in the United States. Tammy Horn, herself a beekeeper, offers a varied social and technological history from the colonial period, when the British first introduced bees to the New World, to the present, when bees are being used by the American military to detect bombs. Early …

3hsds1和17hsds7基因5'上游区转录活性研究.Pdf, Xinxing Dong, Yi Xin, Ying Bai, Yunzhou Yang, Jibin Zhang, Meiying Fang, Gang Chen

Jibin Zhang

Toward Genuine Rodent Welfare: Response To Reviewer Comments, Jonathan P. Balcombe

Jonathan Balcombe, Ph.D.

No abstract provided.

Regulatory Elements Of Xenopus Col2a1 Drive Cartilaginous Gene Expression In Transgenic Frogs, Ryan Kerney, Brian K. Hall, James Hanken

Ryan Kerney

This study characterizes regulatory elements of collagen 2α1 (col2a1) in Xenopus that enable transgene expression in cartilage-forming chondrocytes. The reporters described in this study drive strong cartilage-specific gene expression, which will be a valuable tool for further investigations of Xenopus skeletal development. While endogenous col2a1 mRNA is expressed in many embryonic tissues, its expression becomes restricted to tadpole and adult chondrocytes. This chondrocyte-specific expression is recapitulated by col2a1 reporter constructs, which were tested through I-SceI meganuclease-mediated transgenesis. These constructs contain a portion of the Xenopus tropicalis col2a1 intron, which aligns to a cartilage-specific intronic enhancer that has been well characterized …

Erau Aviation Wildlife Hazard Newsletter, Paul F. Eschenfelder

Paul F. Eschenfelder

No abstract provided.

Laboratory Rodent Welfare: Thinking Outside The Cage, Jonathan P. Balcombe

Jonathan Balcombe, Ph.D.

No abstract provided.

A Brief History Of The American Fish Culture Company 1877-1997., Michael A. Rice

Michael A Rice

The American Fish Culture Company operated for nearly 120 years from 1877-1997 in Carolina, Rhode Island growing three species of trout under the under the direction of several generations of the Hazard family of Peace Dale, Rhode Island. The company was one of the first trout producers in the United States, and was considered the largest fish farm in the country by the early 1920s. Major innovations of the company included early adoption of pelleted feeds, and the introduction of photoperiod manipulation to spawn fish out of season. The company ultimately failed due to intense competition from larger producers in …

Where The Tiger Survives, Biodiversity Thrives, Philip J. Nyhus, Ronald Tilson

Philip J. Nyhus

No abstract provided.

Assessing The Value Of Dna Barcodes And Other Priority Gene Regions For Molecular Phylogenetics Of Lepidoptera, John James Wilson

John James Wilson

Background: Despite apparently abundant amounts of observable variation and species diversity, the order Lepidoptera exhibits a morphological homogeneity that has provided only a limited number of taxonomic characters and led to widespread use of nucleotides for inferring relationships. This study aims to characterize and develop methods to quantify the value of priority gene regions designated for Lepidoptera molecular systematics. In particular, I assess how the DNA barcode segment of the mitochondrial COI gene performs across a broad temporal range given its number one position of priority, most sequenced status, and the conflicting opinions on its phylogenetic performance. Methodology/Principal Findings: Gene …

Airport Wildlife Hazard Control, Paul F. Eschenfelder

Paul F. Eschenfelder

No abstract provided.

Polyphyly Of The Pikeminnows (Teleostei: Cyprinidae) Inferred Using Mitochondrial Dna Sequences, T. Heath Ogden

T. Heath Ogden

The phylogenetic relationships of the Colorado pikeminnow Ptychocheilus lucius, northern pikeminnow P. oregonensis, Sacramento pikeminnow P. grandis, Umpqua pikeminnow P. umpquae, and hardhead Mylopharodon conocephalus were examined by using molecular data to investigate monophyly of the genus Ptychocheilus. Phylogenies generated using DNA sequence data from the cytochrome b and 16S ribosomal DNA genes of the mitochondrial genome reveal that Ptychocheilus is a polyphyletic genus and suggest that the taxonomy of the group is in need of further revision. These data yield insights into the evolution of the pikeminnows and help place the significant evolutionary events in context with the geological …