Animal Sciences Commons^™

Miedo, Amor, Ternura ... ¿Qué Sienten Los Animales? Emociones A Lo Bestia, Eva NúÑEz-MéNdez

World Languages and Literatures Faculty Publications and Presentations

A brief inquiry into the question of whether or not animals have feelings, emotions, or possess consciousness. Reviews the current state of scientific research and how it attempts to answer this question.

Addressing The Decline In Reproductive Performance Of Lactating Dairy Cows: A Researcher’S Perspective, William J. Silvia

Animal and Food Sciences Faculty Publications

No abstract provided.

Conjugated Linoleic Acids In Dairy Products: Effect Of Lactic Acid Cultures, Fat Concentration And Heat, Julian E. Nixon

All Theses

No abstract provided.

Fluctuations In Chinook Salmon (Oncorhynchus Tshawytscha) Counts At Three Lower Columbia River Spawning Sites, Eric Michael Loomis

UNLV Theses, Dissertations, Professional Papers, and Capstones

Several hypotheses were developed to explore the pronounced increase in Chinook salmon (Oncorhynchus tshawytscha) returning to spawning grounds at the Cowlitz, Kalama, and Lewis Rivers, three tributaries of the lower Columbia River. The study was conducted using data compiled over a ten-year span from 1991-2001. Preliminary indications are that trends in climate are linked to these increases, with the absence of El Niño events and fluctuations in winter precipitation as likely explanations of these phenomena. The unique nature of Chinook life cycles causes them to utilize a variety of habitats that require ideal conditions for maximum survival rates. Correlations between …

Modeling Habitat Quality For American Martens In Western Newfoundland, Canada, William A. Adair

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The "Den Mother" marten habitat quality models were created to provide insight into American marten habitat selection behavior and to promote the recovery of the Newfoundland marten (Martes americana atrata) population. Although these objectives are typical of most wildlife habitat modeling projects, the marten's idiosyncratic habitat ecology and apparently intractable conflicts associated with timber harvesting motivated a unique, process-oriented approach to appraising landscapes. The Den Mother models used optimal decision-making principles to synthesize critical resources (den sites and foraging opportunities) and constraints (adverse thermal situations and exposure to predations) into a single hierarchical framework. The resulting spatially explicit, …

Breeding Bird Communities Of Major Mainland Rivers Of Southeastern Alaska, Jim A. Johnson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Because of the scarcity of information for bird communities at the major mainland rivers of southeastern Alaska, the main objective of this study was to provide baseline information including distribution, status, and habitat associations of breeding birds.

I conducted a meta-analysis of all known reports (including the current study) conducted at major mainland rivers during the breeding season. I described bird species composition, distribution, abundance estimates, status, habitat associations, and guild membership for all birds recorded at 11 major mainland rivers. Based on incidental observations, 170 species were recorded by all studies. Of these, 134 species were known or suspected …

Foraging Behavior And Habitat Use Patterns Of Brown Bears (Ursus Arctos) In Relation To Human Activity And Salmon Abundance On A Coastal Alaskan Salmon Stream, Anthony P. Crupi Jr.

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Over the past decade, demand for recreation has increased as part of Alaska's doubling growth in tourism. Along the Chilkoot River, near Haines, fishing and bear viewing have become increasingly popular. I investigated the ecological and behavioral interactions there between brown bears, salmon, and humans between 2000 and 2002. My objectives were to: (1) determine if specific human activities differentially influenced bear activity and foraging behavior, (2) identify temporal and spatial habitat use patterns, (3) evaluate brown bear response to natural and human disturbances and quantify related flight distances, (4) investigate changes in bear foraging behaviors in response to prey …

Comparison Of Native Brushland, Replanted, And Unaided Secondary Succession Plant Communities In The Lower Rio Grande Valley Of Texas, Mitchell Allen Sternberg

School of Integrative Biological & Chemical Sciences (Formerly Dept. of Biology)

Agriculture and urban development have destroyed 95% of native brushland habitat in the Lower Rio Grande Valley (LRGV) of south Texas. Therefore, habitat restoration is an important issue in the LRGV. Since 1982, the U.S. Fish and Wildlife Service has been replanting areas in the LRGV to native brushland species to establish a wildlife corridor along the lower reach of the Rio Grande. Vegetation composition of a mature brushland, a replanted habitat and an unaided secondary succession site (fallow field) were examined at one locale in the LRGV in 1999. The mature brushland edge plot had the highest species richness …

Rapid Effects Of 25-Hydroxyvitamin D3 On Calcium Uptake In Isolated Chick Enterocytes, Ruta Phadnis

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

25-Hydroxyvitamin D₃[25(OH)D₃] is a metabolite of vitamin D₃ that has long been considered to be an inactive precursor of the hormonally active metabolite 1,25- dihydroxyvitamin D₃[l,25(OH)₂D₃]; consequently very few studies have addressed the potential biological activity of 25(OH)₂D₃. However, it is known that 100 nM 25(OH)₂D₃ increases calcium transport in the perfused duodenal loop of the chicken to 200% of controls within 20 minutes. The hypothesis of the current study is that 25(OH)₂D₃ may be a hormonally active metabolite …

A Simple Reason For A Big Difference: Wolves Do Not Look Back At Humans, But Dogs Do, Ádám Miklósi, Eniko Kubinyi, József Topál, Márta Gácsi, Zsófia Virányi, Vilmos Csányi

Communication Skills Collection

The present investigations were undertaken to compare interspecific communicative abilities of dogs and wolves, which were socialized to humans at comparable levels. The first study demonstrated that socialized wolves were able to locate the place of hidden food indicated by the touching and, to some extent, pointing cues provided by the familiar human experimenter, but their performance remained inferior to that of dogs. In the second study, we have found that, after undergoing training to solve a simple manipulation task, dogs that are faced with an insoluble version of the same problem look/gaze at the human, while socialized wolves do …

Utah Alert: West Nile Virus, Clell V. Bagley Dvm

All Archived Publications

West Nile Virus (WNV) has killed thousands of crows and caused human and equine deaths in North America since it first appeared in New York City in 1999. It has been detected in 144 species of birds, 22 species of mosquitoes, as well as in horses, bats, cats, rabbits and other animals. Birds carry the virus and mosquitoes spread it to other birds, animals or humans. Animals, other than horses and birds, rarely show any illness from the infection.

The Bold And The Shy: Individual Differences In Rainbow Trout, L. U. Sneddon

Aquaculture Collection

Boldness and shyness were investigated as ‘personality’ traits in hatchery-reared rainbow trout Oncorhynchus mykiss. Bold fish spent more time in an open area and were more active than shy fish and these behaviours could be used as indicators of boldness and shyness. These differences were related to learning ability in a simple conditioning task. Bold fish learned the task more quickly than shy fish.

Fisheries Research Report No. 140 - The Western Rock Lobster Fishery 1997/98 To 1998/99, C F. Chubb, E H. Barker

Fisheries Research Reports

This report is the latest in a series covering the West Coast Rock Lobster Managed Fishery (formerly the West Coast Rock Lobster Limited Entry Fishery), Western Australia’s largest and most valuable fishery. These reports form an historical record of fishery data and information documented season by season for use by industry and research personnel now and in the future. The reports provide information on catch, fishing effort and biology; value of the product and licences; input costs (fuel, bait, etc.); changes in fishing practices, gear, technology and boats and management/legislative changes. By necessity, the information contained herein is summarised from …

Mapping Of Porcine Ests Obtained From The Anterior Pituitary, G. R. Bertani, R. K. Johnson, A. Robic, Daniel Pomp

Department of Animal Science: Faculty Publications

We report the physical mapping of porcine expressed sequence tags (ESTs) from anterior pituitary clones isolated by differential display PCR in a study using lines selected for reproduction. These ESTs were mapped using a somatic cell hybrid panel (SCHP) and a radiation hybrid panel (IMpRH) as follows (SCHP position, nearest marker on the RH map): SPARCL1 (8q23–q27, SSP1); ATF4 (5p11–p15, AC02); MEF2C [2(1/2q21)– (1/2q22), SW2134]; FTH1 (2p14–p17, SWR783); FRAP1 (6q22–q23, SW1355); PBP (14, SW2508); LOC92004 [13q23-(1/2q41), CP]; and PGRMC1 [Xq22, SW1943]. All RH assignments were at LOD score >6.0 except for PGRMC1 at LOD score 5.4. ESTs TCP1 [12p11-(2/3p13)], SF3B1 …

Great Gathering On The Great Plains, Paul A. Johnsgard, Michael Forsberg

Paul Johnsgard Collection

Early spring along the Platte River is sheer magic. For more than a month migratory sandhill cranes pour into central Nebraska, attracted by the shallow river’s abundant roosting sites and nearby meadows and farms for feeding. Looking like legions of gray ghosts from a distance, the birds often cover wet meadows and cornfields from one end to the other. Flocks of a thousand or more fly low over the river, their voices rising and falling as they approach, pass overhead and disappear. With nearly a half-million cranes stopping here each spring, the placid Platte is transformed into the site of …

An Unusually Colored Red-Backed Salamander (Plethodon Cinerus) From Northern Virginia, Joseph C. Mitchell, Thomas K. Pauley, C. Todd Georgel

Virginia Journal of Science

We describe an orange-pink, patternless, translucent morph of the Red-backed Salamander (Plethodon cinereus) found in northern Virginia on 27 September 2001. This is the first description of this unusual phenotype in this terrestrial salamander.

Keys To The Mammals And Mammal Skulls Of The Northern Coastal Plain Of Virginia, John F. Pagels, A. Scott Bellows, Joseph C. Mitchell

Virginia Journal of Science

This publication is designed to function as a tool for the identification of mammal species that occur on the Coastal Plain of northern Virginia. We provide whole-body and skull keys to the 40 species that occur in this region. Baseline data for this work were collected during several studies conducted on Fort A.P. Hill, Caroline County. The intended audience includes interested naturalists, teachers, students, field biologists, and natural resource managers.

An Analysis Of Materials Suitable For Use As A Pitfall Trap In A Desert Environment, R. Renee Brown

UNLV Theses, Dissertations, Professional Papers, and Capstones

The purpose of this study is to identify a type of pitfall trap container that can withstand the temperature extremes of the Mojave Desert in which the terrestrial, or above ground, drift fence with pitfall traps will be utilized for trapping reptiles. A pitfall trap is a container, such as a plastic bucket with a plastic lid, that is buried in the ground up to the lip of the bucket and used to catch small ground dwelling fauna that fall into the trap. Many different pitfall trap materials have been utilized in the trapping of small ground-dwelling fauna. Plastic has …

The Ecological Ramifications Of Disease And Density In The Caribbean Spiny Lobster, Panulirus Argus, Donald C. Behringer Jr.

Biological Sciences Theses & Dissertations

In 1999, I discovered the first virus known to be pathogenic to any species of lobster. HLV-PA is a pathogenic herpes-like virus that infects juvenile Caribbean spiny lobster, Panulirus argus, in the waters off south Florida (USA), and it alters the behavior and ecology of this species in fundamental ways. Gross signs of HLV-PA infection are lethargy, morbidity, cessation of molting, and discolored, “milky” hemolymph that does not clot. HLV-PA infects the hemocytes of host lobsters, specifically the hyalinocytes and semi-granulocytes, but not the granulocytes. When hemolymph from infected donors was injected into healthy juvenile lobsters, 90% of the …

Hybridization Between The Watersnakes Nerodia Sipedon And Nerodia Fasciata, In The Carolinas: A Morphological And Molecular Approach, Konrad Mebert

Biological Sciences Theses & Dissertations

A few traditionally applied diagnostic characters of color pattern were compared with an additional set of morphological and genetic characters to evaluate differences between Nerodia sipedon and N. fasciata and to study the dynamics across their hybrid zone in the Carolinas. Many of the morphological characters exhibited significant interspecific differences, although only the number of dorsally complete crossbands (CBa) was diagnostic by itself. A discriminant function analysis of morphological characters was successful in separating both taxa. Species-specific nuclear markers, identified by the AFLP (Amplified Fragment Length Polymorphism) technique were nearly fixed and served as diagnostic markers. They revealed extensive introgression …

Male Reproductive Dynamics In The Caribbean Spiny Lobster Panulirus Argus, Jamie S. Heisig

Biological Sciences Theses & Dissertations

The population size structure of the Caribbean Spiny Lobster, Panulirus argus, in the Florida Keys, Florida (USA) has undergone a dramatic shift as a result of fishing pressure on the large individuals of the population. Male lobsters are affected most by fishing because of sexual dimorphism in size and other studies have shown that male size has direct impacts on reproductive output (i.e., number of fertilized eggs/clutch) that are independent of female size. To assess more precisely the impact of male size on fertilization success, I conducted laboratory experiments and field observations to examine various male reproductive attributes over …

2003 Little International Agricultural Exposition Catalog, Little International Agricultural Exposition South Dakota State University

Little International "Little I" Agricultural Exposition Catalogs

No abstract provided.

Empirical Orthogonal Function Analysis Of Avhrr Sea Surface Temperature Patterns In Taiwan Strait, Ming-An Lee, Ching-Dong Yeah, Chao-Hsiung Cheng, Jui-Wen Chan, Kuo-Tien Lee

Journal of Marine Science and Technology–Taiwan

Empirical orthogonal function (EOF) analysis was used to study a time-series of the Advanced Very High Resolution Radiometer (AVHRR) imageries from the waters of Taiwan Strait to examine the temporal and spatial characteristics and to determine the dominant pattern of sea surface temperature (SST) variability for 72 months from January 1996 to December 2001. The spatial variance was consistent with a quasi-permanent front at the Chang-Yuen Ridge in winter and associated with strong temperature contrast to the Kuroshio branch or the South China Sea Warm Current. It also displayed a cool water plume extending from the Peng-Hu Islands to Formosa …

The Xenarthrans Of Nicaragua, Hugh H. Genoways, Robert M. Timm

University of Nebraska State Museum: Mammalogy Papers

The mammalian fauna of Nicaragua includes seven species in the order Xenarthra, including the brown-throated three-toed sloth (Bradypus variegatus) in the family Bradypodidae, Hoffmann's two-toed sloth (Choloepus hoffmanni) in the family Megalonychidae, the northern naked-tailed armadillo (Cabassous centralis) and nine-banded armadillo (Dasypus novemcinctus) in the family Dasypodidae, and the silky anteater (Cyclopes didactylus) and northern tamandua (Tamandua mexicana) in the family Myrmecophagidae. Additionally, the giant anteater (Myrmecophaga tridactyla) in the family Myrmecophagidae is (or was) certainly part of the fauna of Nicaragua but has yet to …

Endangered Fish Passage Project At The Grand Valley Project Diversion Dam And Fish Screen In The Government Highline Canal, United State Department Of The Interior, Bureau Of Reclamation

All U.S. Government Documents (Utah Regional Depository)

No abstract provided.

Fisheries Research Report No. 144 - Frdc Project 1998/302 - Rock Lobster Enhancement And Aquaculture Subprogram: Towards Establishing Techniques For Large Scale Harvesting Of Pueruli And Obtaining A Better Understanding Of Mortality Rates, Bruce F. Phillips, Roy Melville-Smith, Mark Rossbach, Yuk W. Cheng, Nick Caputi, Adrian Thomson

Fisheries Research Reports

No abstract provided.

Winter Field Report, December 2002 To February 2003, W. Ross Silcock

Nebraska Bird Review

Overall, this winter season was pretty quiet. There were no major weather events, no major invasions Gust one minor incursion), and, with one big exception, no real rarities. Indeed, one observer (JJ) said: "I don't think I've ever had such a poor winter with bird sightings." Thus I stoop to the point of mentioning the presence of a kangaroo in Crawford, dutifully recorded on the CBC there on 28 December (BW). It was not identified to species, unfortunately.

On a more serious note, it is important to keep in mind that what we do as birders can make a significant …

Ecology Of The Missouri River: Missouri River Creel Survey, Bellevue Bridge To Camp Creek, 30 March Through 11 October 2002. Supplement I, Gerald Mestl

Nebraska Game and Parks Commission: White Papers, Conference Presentations, and Manuscripts

This report describes Missouri River activities and results related to a channelized Missouri River creel survey conducted from 30 March through 11 October 2002. This is the third of a planned annual creel survey to be conducted on alternating sections of the channelized Missouri River to measure changes in recreational fishing activity, especially those changes due to large scale habitat restoration efforts. Future reports will contain additional analyses of these data. Anglers spent over 42,000 hours fishing the Missouri River from Bellevue (rkm 967.7) to Camp Creek (rkm 883.5) during the survey period. Effort was steady from late spring (4/27 …

Masthead From Nebraska Bird Review March 2003

Nebraska Bird Review

The Nebraska Bird Review (http://rip.physics.unk.edu/NOUI) is published quarterly by the Nebraska Ornithologists' Union, Inc., as its official journal, and is sent to members not in arrears of dues. Annual subscription rates (on a calendar-year basis only): $ 14.00 in the United States; $ 18.00 for all foreign countries, payable in advance. Single copies are $4.00 each, postpaid, in the United States, and $5.00 elsewhere. Send orders for back issues to Mary Prichard, NOU Librarian, University of Nebraska State Museum, Lincoln, NE 68588-0514.

Memberships in NOU (on a calendar year basis only): Active, $ 15.00; Sustaining, $25.00; Student, $ 10.00; Family …

2002 Christmas Bird Counts

Nebraska Bird Review

2002 Christmas Bird Counts compiled by Janis Paseka

The 2002 Christmas Bird Count period included 11 counts, down one from the previous year, as no count was held in Harlan County. Ten of these counts took place in Nebraska, and one, which includes the DeSoto National Wildlife Refuge and Boyer Chute, straddles the Nebraska-Iowa border. A total of 237 counters participated in this year's count, 208 in the field and 29 at feeders.

The overall weather this year was balmy, with over half the counts ending their day in the 50's or 60's. The weather had also been mild in …