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2001

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Articles 121 - 150 of 584

Full-Text Articles in Animal Sciences

Response Of The Threatened Sand Skink (Neoseps Reynolds!) And Other Herpetofaunal Species To Burning And Clearcutting In The Florida Sand Pine Scrub Habitat, Kristie D. Gianopulos Apr 2001

Response Of The Threatened Sand Skink (Neoseps Reynolds!) And Other Herpetofaunal Species To Burning And Clearcutting In The Florida Sand Pine Scrub Habitat, Kristie D. Gianopulos

USF Tampa Graduate Theses and Dissertations

Florida scrub habitat is a naturally fire maintained habitat that is highly endangered because of great demand for land for agriculture and real estate. Maintenance of remaining patches ofFlorida scrub habitat requires active management. We experimentally investigated the effects of clearcutting and burning on sand skink populations in three patches of sand pine scrub. Each patch included a clearcut plot, a burned plot, and an undisturbed plot. Treatment plot boundaries were drawn in 1995 such that each plot was no different from any other plot in sand skink densities. The responses of sand skink and other herpetofauna populations were monitored …


Capitalism And The Value Of Life: Foot-And-Mouth And The Culling Of Herds, Ibpp Editor Apr 2001

Capitalism And The Value Of Life: Foot-And-Mouth And The Culling Of Herds, Ibpp Editor

International Bulletin of Political Psychology

This article describes some psychological implications of culling as an intervention to help combat the spread of foot-and-mouth disease.


The Mannose-Sensitive Hemagglutinin Of Vibrio Cholerae Promotes Adherence To Zooplankton, Deborah A. Chiavelli, Jane W. Marsh, Ronald K. Taylor Apr 2001

The Mannose-Sensitive Hemagglutinin Of Vibrio Cholerae Promotes Adherence To Zooplankton, Deborah A. Chiavelli, Jane W. Marsh, Ronald K. Taylor

Dartmouth Scholarship

The bacterium Vibrio cholerae, the etiological agent of cholera, is often found attached to plankton, a property that is thought to contribute to its environmental persistence in aquatic habitats. The V. cholerae O1 El Tor biotype and V. cholerae O139 strains produce a surface pilus termed the mannose-sensitive hemagglutinin (MSHA), whereas V. cholerae O1 classical biotype strains do not. Although V. cholerae O1 classical does not elaborate MSHA, the gene is present and expressed at a level comparable to that of the other strains. Since V. cholerae O1 El Tor and V. cholerae O139 have displaced V. cholerae O1 classical …


For The Birds Apr 2001

For The Birds

United States Fish and Wildlife Service: Publications

As you learn to enjoy the beauty of birdlife around their home, you may wish to improve the “habitat” in your yard so that more birds will visit your property. You can attract birds by placing bird feeders, nest boxes, and bird baths in your yard, and by planting a variety of trees, shrubs, and flowers. These can provide good nesting sites, winter shelter, places to hide from predators and natural food supplies that are available year-round.

Backyard bird feeding is a convenient way to enjoy wildlife. More than 65 million Americans of all ages watch, feed and landscape for …


Heeding The Call Of The Sandhill Cranes, Malcolm G. Scully, Paul A. Johnsgard Apr 2001

Heeding The Call Of The Sandhill Cranes, Malcolm G. Scully, Paul A. Johnsgard

Paul Johnsgard Collection

Paul A. Johnsgard has made this trip almost 200 times—as many as five times each March for the past 40 years. He leaves Interstate 80 near this central-Nebraska city and follows Platte River Road along the southern banks of the braided river toward Kearney, some 40 miles to the west. On one such trip this year, the ornithologist and professor of zoology at the University of Nebraska at Lincoln talks about a career that began in 1961 and has produced an average of a book a year ever since.


Draft Plan Of Management For The Cottesloe Reef Proposed Fish Habitat Protection Area., Fisheries Western Australia Apr 2001

Draft Plan Of Management For The Cottesloe Reef Proposed Fish Habitat Protection Area., Fisheries Western Australia

Fisheries Management Papers

The aim of this management plan is to promote and encourage the protection and rehabilitation of the aquatic habitat at Cottesloe Reef and to involve the community in its management.


Determining Differences In The Spatial Distribution Of Forest Structure On The Kaibab Plateau: Implications For Forest Management And The Northern Goshawk, Ryan S. Miller Apr 2001

Determining Differences In The Spatial Distribution Of Forest Structure On The Kaibab Plateau: Implications For Forest Management And The Northern Goshawk, Ryan S. Miller

Other Publications in Wildlife Management

The Kaibab Plateau, in North Central Arizona, has undergone extensive change in the last 100 years due to land management practices such as logging, road building, and fire suppression. The northern goshawk (Accipiter gentilis) has been a center of controversy, due to the potential effects of silvicultural practices on goshawk breeding habitat (Reynolds-1983, Bloom et al 1986, Kennedy 1989, Crocker-Bedford 1990). Current and past research efforts on the Kaibab Plateau have mapped Goshawk nesting territories and temporal change in nesting behavior and success. However, these research efforts have not determined how long-term spatial changes in land-use activities that have influenced …


Fish & Wildlife News: April/May/June 2001 Apr 2001

Fish & Wildlife News: April/May/June 2001

Fish and Wildlife News

Contents:
Proposal Brings Whoopers Back to East 2
Calling All Photographers! 5
Convictions, Fines in Caviar Case 6
Recarpeting a Bay 7
Students Become Refuge Biologists 8
Special Section: Native Americans 10
Apaches Join in Wolf Recovery Efforts 16
Mythical Condors Returning to West 16
The Day of the “Duck In” 20
Cooking Up Conservation 23
Spontaneity at Government Meeting 27
Fish and Wildlife...In Brief 35


Canine And Feline Parvoviruses Can Use Human Or Feline Transferrin Receptors To Bind, Enter, And Infect Cells, John S. L. Parker, William J. Murphy, Dai Wang, Stephen J. O'Brien, Colin R. Parrish Apr 2001

Canine And Feline Parvoviruses Can Use Human Or Feline Transferrin Receptors To Bind, Enter, And Infect Cells, John S. L. Parker, William J. Murphy, Dai Wang, Stephen J. O'Brien, Colin R. Parrish

Biology Faculty Articles

Canine parvovirus (CPV) enters and infects cells by a dynamin-dependent, clathrin-mediated endocytic pathway, and viral capsids colocalize with transferrin in perinuclear vesicles of cells shortly after entry (J. S. L. Parker and C. R. Parrish, J. Virol. 74:1919–1930, 2000). Here we report that CPV and feline panleukopenia virus (FPV), a closely related parvovirus, bind to the human and feline transferrin receptors (TfRs) and use these receptors to enter and infect cells. Capsids did not detectably bind or enter quail QT35 cells or a Chinese hamster ovary (CHO) cell-derived cell line that lacks any TfR (TRVb cells). However, capsids bound and …


Effects Of Human Disturbances On The Behavior Of Dabbling Ducks, Melissa Lynn Pease Apr 2001

Effects Of Human Disturbances On The Behavior Of Dabbling Ducks, Melissa Lynn Pease

Biological Sciences Theses & Dissertations

Disturbance of wintering and migrating birds by human activities can cause birds to expend energy in avoidance of humans and reduces the time available for resting and feeding at a time in the annual cycle when fat deposition and energy conservation are important. Also, human disturbances can effectively cause habitat loss by displacing birds from feeding or resting habitat. Managers of natural resources are increasingly faced with decisions about the types and amounts of public use that should be allowed without lowering the value of the resource for wildlife. In order for managers to make decisions about how to minimize …


In Support Of A Rationally Managed Fishery: Age And Growth In Patagonian Toothfish (Dissostichus Eleginoides), Julian R. Ashford Apr 2001

In Support Of A Rationally Managed Fishery: Age And Growth In Patagonian Toothfish (Dissostichus Eleginoides), Julian R. Ashford

Biological Sciences Theses & Dissertations

Patagonian toothfish (Dissostichus eleginoides) occur on the continental shelves and shelf breaks of southern South America and the Southern Ocean. Stock structure, critical to good fisheries management, can be inferred from growth differences between areas, but available growth data are compromised by inconsistencies in age estimation methods, sampling and sample sizes, and techniques used to derive estimates. I asked the scientific question: how is growth in Patagonian toothfish structured spatially within the Southern Ocean? I developed a multi-stage randomized design to sample fish caught by commercial longline, and an age estimation methodology. Because toothfish are difficult to age, …


Investigations Into The Innate Resistance Of The Tick, Dermacentor Variabilis, When Challenged With The Bacterium, Escherichia Coli, Shane Michael Ceraul Apr 2001

Investigations Into The Innate Resistance Of The Tick, Dermacentor Variabilis, When Challenged With The Bacterium, Escherichia Coli, Shane Michael Ceraul

Biological Sciences Theses & Dissertations

In addition to the soluble response, many invertebrates control bacterial infections by means of phagocytosis or melanotic encapsulation. In some insects, Escherichia coli growth is reported to be inhibited by aggregation/encapsulation. Soluble and phagocytic responses to bacterial challenge have been reported in ticks, but evidence of an aggregation/encapsulation response was reported only for inanimate (araldite) implants. This study was done to determine how ticks control infection by E. coli. Ticks were challenged by direct inoculation of bacteria into the hemocoel cavity. Using plate counts, no viable E. coli were detected I hour post-inoculation. A direct fluorescence assay (DF A) …


Trends. The Psycho-Politics Of Foot In Mouth On Foot In Mouth: Pigs, Sheep, Cows, Politicians On The Animal Farm, Ibpp Editor Mar 2001

Trends. The Psycho-Politics Of Foot In Mouth On Foot In Mouth: Pigs, Sheep, Cows, Politicians On The Animal Farm, Ibpp Editor

International Bulletin of Political Psychology

This article discusses agricultural policy in the United Kingdom regarding foot and mouth disease of cloven-hoofed animals.


2001 Little International Agricultural Exposition Catalog, Little International Agricultural Exposition South Dakota State University Mar 2001

2001 Little International Agricultural Exposition Catalog, Little International Agricultural Exposition South Dakota State University

Little International "Little I" Agricultural Exposition Catalogs

No abstract provided.


Review Of Antillean Bats Of The Genus Ariteus, Hugh H. Genoways Mar 2001

Review Of Antillean Bats Of The Genus Ariteus, Hugh H. Genoways

University of Nebraska State Museum: Mammalogy Papers

The genus Ariteus as currently understood is represented by a single species Ariteus flavescens, which is confined to island of Jamaica in the Greater Antilles. It is surprising given the restricted distribution of the species that it was among the first of the New World bats to be described (Gray, 183 1). Philip Henry Gosse (1851) was the first to publish on the natural history of this bat, but he described it under the name of two new species, which subsequently have been treated as junior synonyms of A. flavescens. Until the 1970s, less than 50 recent specimens …


Usefulness Of Subjective Ovine Milk Scores: I. Associations With Range Ewe Characteristics And Lamb Production, G. D. Snowder, A.D. Knight, L. Dale Van Vleck, C. M. Bromley, T. R. Kellom Mar 2001

Usefulness Of Subjective Ovine Milk Scores: I. Associations With Range Ewe Characteristics And Lamb Production, G. D. Snowder, A.D. Knight, L. Dale Van Vleck, C. M. Bromley, T. R. Kellom

Department of Animal Science: Faculty Publications

Range ewes are commonly evaluated for milking ability by producers to determine the ewe’s ability to rear lamb(s). The U.S. Sheep Experiment Station has subjectively scored (low, average, high) a ewe’s milking ability within 24 h of lambing for many years. The relationship of subjective milk scores with lamb production was investigated using lambing records of Columbia (n = 1,731), Polypay (n = 1,129), Rambouillet (n = 1,704), and Targhee (n = 1,638) ewes. The incidence of high milk scores increased from less than 10% at first parity to 29 to 40% at second and greater parities. At maturity, Columbia …


Usefulness Of Subjective Ovine Milk Scores: Ii. Genetic Parameter Estimates, G. D. Snowder, L. Dale Van Vleck, A. D. Knight, T. R. Kellom, C. M. Bromley Mar 2001

Usefulness Of Subjective Ovine Milk Scores: Ii. Genetic Parameter Estimates, G. D. Snowder, L. Dale Van Vleck, A. D. Knight, T. R. Kellom, C. M. Bromley

Department of Animal Science: Faculty Publications

Genetic parameters for a subjective milk score given to ewes within 24 h of parturition were estimated to determine the usefulness of milk score as a selection trait to improve milk production, which influences total litter weight weaned. Heritability of milk score and the genetic correlation of milk score with litter weight weaned were estimated by REML separately for four sheep breeds, Rambouillet (n = 1,731), Targhee (n = 1,638), Columbia (n = 1,731), and Polypay (n = 1,129). Litter weight weaned was the total weight of lambs weaned at approximately 120 d of age under a western range production …


Fisheries Research Report No. 125 - A History Of Foreign Fishing Activities And Fishery-Independent Surveys Of The Demersal Finfish Resources In The Kimberley Region Of Western Australia, G Nowara, Stephen J. Newman Mar 2001

Fisheries Research Report No. 125 - A History Of Foreign Fishing Activities And Fishery-Independent Surveys Of The Demersal Finfish Resources In The Kimberley Region Of Western Australia, G Nowara, Stephen J. Newman

Fisheries Research Reports

The aim of this project was to collate all historical information regarding fishing activities relevant to the Northern Demersal Scalefish Fishery. Three primary sources of information were identified; foreign Taiwanese pair-trawl fishing activities; traditional Indonesian fishing activities; and fishery-independent (CSIRO) survey data.

The Taiwanese pair-trawl fishing catch and effort from 1980 to 1990 was concentrated into two main regions, the Broome area (120°-122°E) and the Holothuria Banks area (124°-126°E) in the north. The majority of trawls were undertaken in the mid-continental shelf region (60-100 m). The total catch of these vessels reached a peak of 4,394 tonnes in 1985. Effort …


Size Matters: Impact Of Item Size And Quantity On Array Choice By Chimpanzees (Pan Troglodytes), Sarah T. Boysen, Gary G. Berntson, Kimberly L. Mukobi Mar 2001

Size Matters: Impact Of Item Size And Quantity On Array Choice By Chimpanzees (Pan Troglodytes), Sarah T. Boysen, Gary G. Berntson, Kimberly L. Mukobi

Sentience Collection

The authors previously reported that chimpanzees (Pan troglodytes) showed a striking bias to select the larger of 2 candy arrays, despite a reversed reward contingency in which the animals received the smaller, nonselected array as a reward, except when Arabic numerals were used as stimuli. A perceptual or incentive-based interference occurred that was overcome by symbolic stimuli. The authors of the present study examined the impact of element size in choice arrays, using 1 to 5 large and small candies. Five test-sophisticated chimpanzees selected an array from the 2 presented during each trial. Their responses were not optimal, as animals …


Final Plan Of Management For The Lancelin Island Lagoon Fish Habitat Protection Area., Fisheries Western Australia, Australian Marine Conservation Society Friends Of Lancelin Island. Mar 2001

Final Plan Of Management For The Lancelin Island Lagoon Fish Habitat Protection Area., Fisheries Western Australia, Australian Marine Conservation Society Friends Of Lancelin Island.

Fisheries Management Papers

The Lancelin Island Lagoon is a small area of reef habitat on the western side of Lancelin Island and a popular snorkelling and diving destination. Water depth ranges from less than 0.3 m on the intertidal reefs to less than 3 m on the sand or seagrass-covered bottom. The area has a diverse array of benthic marine habitat. During a marine survey of the area, over 200 flora and fauna species were positively identified, with many more remaining unidentified due to the diversity of species supported in this marine environment. The survey, which was facilitated by direct observations and photographs, …


Masthead From Nebraska Bird Review March 2001 Mar 2001

Masthead From Nebraska Bird Review March 2001

Nebraska Bird Review

The Nebraska Bird Review 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 everywhere else. 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 Active, $20.00; Family …


Winter Field Report, December 2000 To February 2001, W. Ross Silcock Mar 2001

Winter Field Report, December 2000 To February 2001, W. Ross Silcock

Nebraska Bird Review

What a difference a year makes! After all sorts of unusual midwinter reports last winter, this winter seemed more normal, as entire species actually left the state for a while. Although not extremely cold, the cool temperatures were persistent in November and December, flushing out many of the semi-hardy species and freezing most bodies of water.

There were, nevertheless, some notable tardies: a first Panhandle winter Wood Duck; a Spotted Sandpiper in December at Harlan County Res; a first December Eastern Phoebe; a third January Gray Catbird; a second December Pine Warbler; a 3rd overwintering Yellow-headed Blackbird; and the farthest …


The 2000-2001 Nebraska Christmas Bird Count, Stephen J. Dinsmore Mar 2001

The 2000-2001 Nebraska Christmas Bird Count, Stephen J. Dinsmore

Nebraska Bird Review

The 2000-2001 Christmas Bird Count (CBC) period included nine counts in Nebraska, down one from last year. New this year was the resurrected Crawford count while Kearney and Dakota-Dix were missing (Table 1). These counts reported a total of 117 species and nearly 138,000 individuals, which is not bad for such a cold count period. Counts were scattered statewide, but most effort was in the eastern half of the state where most of the birders are. The top count again this year was Lake McConaughy with 93 species. Other excellent totals included 71 at Harlan County and 65 at Branched …


First Record Of A Reddish Egret For Nebraska, Stephen J. Dinsmore Mar 2001

First Record Of A Reddish Egret For Nebraska, Stephen J. Dinsmore

Nebraska Bird Review

On 27 September 2000, I was birding the west end of Lake McConaughy from Marina Landing. At 2:15 p.m., I noticed a few egrets farther east off Cedar Vue. By 2:30 p.m. I had arrived at Cedar Vue and began looking over the egrets. The egrets were loosely scattered in a small area with numerous Great Blue Herons, approximately 400m from the north shore of the lake. There were six egrets present--4 Great Egrets, 1 Snowy Egret, and an intermediate-sized bird that I identified as a white morph Reddish Egret. The Reddish Egret foraged for about half an hour and …


First Confirmed Records Of Dusky Flycatcher For Nebraska, Stephen J. Dinsmore, W. Ross Silcock Mar 2001

First Confirmed Records Of Dusky Flycatcher For Nebraska, Stephen J. Dinsmore, W. Ross Silcock

Nebraska Bird Review

Prior to the fall of 2000, there were no accepted records of Dusky Flycatcher for Nebraska. With the exception of a single sight record by Silcock (17 May 1992) judged "Hypothetical" by the Nebraska Ornithologists' Union Records Committee, this species had been unreported in Nebraska. Dusky Flycatchers breed locally in the Black Hills of South Dakota (Peterson 1990) and were presumed to occur in western Nebraska. Here, we report the capture of three Dusky Flycatchers in Kimball County and three additional sight records from western Nebraska.

On 31 August 2000, we were mist netting below the dam of Oliver Reservoir …


Nebraska Bird Review Whole Issue- Volume 69 March 2001 Number 1 Mar 2001

Nebraska Bird Review Whole Issue- Volume 69 March 2001 Number 1

Nebraska Bird Review

Table of Contents

Winter Field Report, compiled by W. Ross Silcock.................................. 2

Species Accounts .................................. 3

2000-2001 Nebraska Christmas Bird Count Summary
by Stephen J. Dinsmore .................................. 19

First confirmed records of Dusky Flycatcher for Nebraska
Stephen J. Dinsmore and W. Ross Silcock .................................. 33

NOU Fall Field Days Count from Ogallala .................................. 36

First record of a Reddish Egret for Nebraska
Stephen J. Dinsmore.................................. 42


Effects On The Red-Cockaded Woodpecker From Various Spatial And Temporal Applications Of Management Practices, Chad F. Schroeder Mar 2001

Effects On The Red-Cockaded Woodpecker From Various Spatial And Temporal Applications Of Management Practices, Chad F. Schroeder

Theses and Dissertations

The Red-Cockaded Woodpecker (RCW) is an endangered species endemic to southeastern pine forests in the United States. RCWs are cooperative breeding birds that live together in clusters of old-growth pine trees in which they construct their nesting cavities. The cavities are constructed in living pines, which are predominantly longleaf pines. RCWs also forage upon older pines, preferably longleaf pine. The Endangered Species Act, along with other DoD regulations, requires DoD installations to protect the RCWs and restore their habitat. A popular management practice converts off-site (non-native) pines back to a region's indigenous pines. Conversion provides the best long term RCW …


Comparison Of Conventional And Two-Stage Reversible Flow, Static-Bed Biodenitrification Reactors, Bryan L. Woodbury, Mohamed F. Dahab Feb 2001

Comparison Of Conventional And Two-Stage Reversible Flow, Static-Bed Biodenitrification Reactors, Bryan L. Woodbury, Mohamed F. Dahab

Department of Animal Science: Faculty Publications

This paper compares the operation of a traditional single-stage system with a two-stage, reversible flow biodenitrification system for removing nitrates from drinking water. The purpose of this study was to investigate the ability of these two-stage systems to remove nitrate and residual organics from treated water as compared to single-stage units. In the reversible flow system, the second-stage (i.e. follow) reactor is operated in series with the first-stage (i.e. lead) reactor. After a given period of operation, the flow regime is reversed so that the follow reactor becomes the lead one and vice versa. The active solids remaining in the …


Bats Of The West Indian Island Of Dominica: Natural History, Areography, And Trophic Structure, Hugh H. Genoways, Carleton J. Phillips, Robert M. Timm, Duane A. Schlitter Feb 2001

Bats Of The West Indian Island Of Dominica: Natural History, Areography, And Trophic Structure, Hugh H. Genoways, Carleton J. Phillips, Robert M. Timm, Duane A. Schlitter

University of Nebraska State Museum: Mammalogy Papers

Because the islands in the Caribbean long have interested students of mammals and zoogeography, considerable information has been published concerning the biology of the Antillean mammalian fauna in the past three decades (Jones and Schwartz, 1967; Schwartz and Jones, 1967; Koopman, 1968, 1989; Jones and Phillips, 1970, 1976; Varona, 1974; Baker and Genoways, 1978; Baker et al., 1978; Swanepoel and Genoways, 1978; Jones and Baker, 1979; Silva Taboada, 1979; Baker et al., 1984; Eshelman and Morgan, 1985; Buden, 1986; Griffiths and Klingener, 1988; Jones, 1989; Masson et al., 1990; Pederson et al., 1996; Genoways et al., 1998). This increasing interest …


Identification Of Quantitative Trait Loci Affecting Reproduction In Pigs, J. P. Cassady, R. K. Johnson, Daniel Pomp, G. A. Rohrer, L. Dale Van Vleck, E. K. Spiegel, K. M. Gilson Feb 2001

Identification Of Quantitative Trait Loci Affecting Reproduction In Pigs, J. P. Cassady, R. K. Johnson, Daniel Pomp, G. A. Rohrer, L. Dale Van Vleck, E. K. Spiegel, K. M. Gilson

Department of Animal Science: Faculty Publications

The objective of this research was to identify chromosomal regions harboring QTL affecting reproduction in pigs. A three-generation resource population was developed by crossing low-indexing pigs from a randomly selected control line (C) with high-indexing pigs of a line selected for increased index of ovulation rate and embryonic survival (I). Differences between Lines I and C at Generation 10 were 6.7 ova and 3.3 fetuses at 50 d of gestation and 3.1 fully formed and 1.6 live pigs at birth. Phenotypic data were collected on F2 females, born in three replicates, for ovulation rate (n = 423), age at …