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1997

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Articles 121 - 150 of 382

Full-Text Articles in Animal Sciences

Mark-Recapture Creel Survey And Survival Models, Shampa Saha Jul 1997

Mark-Recapture Creel Survey And Survival Models, Shampa Saha

Mathematics & Statistics Theses & Dissertations

In this dissertation, we consider a model based approach to the estimation of exploitation rate of a fish population by combining mark-recapture procedures with a creel survey. We also consider the analysis of a proportional hazards survival model for randomly censored observations, known as the Koziol-Green model. The model assumes that the lifetime survivor function is a power of the censored time survivor function.

In Chapter 2, we introduce the model based approach to the estimation of the exploitation rate of a fish population by combining mark-recapture procedures with a creel survey. We assume that in the beginning of a …


Systematics Of The Freshwater Amphipod Genus Crangonyx (Crangonyctidae) In North America, Jun Zhang Jul 1997

Systematics Of The Freshwater Amphipod Genus Crangonyx (Crangonyctidae) In North America, Jun Zhang

Biological Sciences Theses & Dissertations

The systematics of the amphipod genus Crangonyx of North America (north of Mexico) is revised, based on available collections (ca. 2240) and literature dealing with the genus. A grand total of 42 North America species of Crangonyx are recognized in the present study, 24 of them new to science. All species are described or redescribed and figured, utilizing external morphological features. Keys to both species groups and individual species are given. Phylogenetic trees are built using computer programs (PAUP, Hennig86, MacClade) based on 26 characters. Wagner parsimony produced 18 parsimonious trees and Fitch parsimony produced 45 trees. The consensus tree …


Swiss Cheese Consortium Project Report, Various Authors Jun 1997

Swiss Cheese Consortium Project Report, Various Authors

Other Documents

No abstract provided.


Twenty-Five Years Of The Shadle Fellowship, Hugh H. Genoways, Patricia W. Freeman Jun 1997

Twenty-Five Years Of The Shadle Fellowship, Hugh H. Genoways, Patricia W. Freeman

University of Nebraska State Museum: Mammalogy Papers

Over the past 25 years, Albert R. and Alma Shadle Fellowships have been awarded to 26 young mammalogists. Of the 26 Shadle Fellows, 20 are men and six are women. Twenty-five of the 26 Fellows remain active in science and are still members of the American Society of Mammalogists. Shadle Fellows have been selected from 15 academic institutions and 17 professors have served as academic advisors for awardees. Shadle Fellows have already made significant contributions to the American Society of Mammalogists and to their home institutions. Awardees have published an average of 3.2 scientific articles per year per Fellow since …


The Mayfly Newsletter, Peter M. Grant Jun 1997

The Mayfly Newsletter, Peter M. Grant

The Mayfly Newsletter

The Mayfly Newsletter is the official newsletter of the Permanent Committee of the International Conferences on Ephemeroptera.


The Aquaculture Of Non-Endemic Species In Western Australia, Tina Thorne Jun 1997

The Aquaculture Of Non-Endemic Species In Western Australia, Tina Thorne

Fisheries Management Papers

This Management Paper has been drafted in liaison with the Department of Environmental Protection in accordance with the principles of risk assessment and taking into account translocation issues of non-endemic species such as redclaw (Cheras quadricarninatus). It is considered that the implementation of this policy will protect the natural environment and native crayfish species. It will also allow for the development of a redclaw industry, and provide the first step towards self regulation of that industry.


Ministerial Policy Guideline No.5: The Aquaculture And Recreational Fishing Stock Enhancement Of Non-Endemic Species In Western Australia, Department Of Fisheries Wa Jun 1997

Ministerial Policy Guideline No.5: The Aquaculture And Recreational Fishing Stock Enhancement Of Non-Endemic Species In Western Australia, Department Of Fisheries Wa

Fisheries Administrative Guidelines

Issued Pursuant to Section 246 of the Fish Resources Management Act 1994.

Introduction

The Executive Director of the Fisheries Department of Western Australia performs many functions under the provisions of the Fish Resources Management Act 1994 ('the Act'). These functions often include decisions on whether to grant an authorisation in a particular case. This decision may involve consideration of the factors of what constitutes a 'fit and proper person' to hold an authorisation and in the circumstances whether the grant of ari authority is 'in the better interests of industry.' It is my function as Minister to provide policy guidelines …


Live Sheep Trade From Australia Summary Information For 1996, R T. Norris, G J. Norman Jun 1997

Live Sheep Trade From Australia Summary Information For 1996, R T. Norris, G J. Norman

Agriculture reports

This report provide summary information about mortalities in sheep and cattle during sea transport.


Nou Fall Count 1996; Namc Count In Two Counties 10 May 1997 Jun 1997

Nou Fall Count 1996; Namc Count In Two Counties 10 May 1997

Nebraska Bird Review

The NOU count during Fall Field Days 27-28 September 1996 was centered at the Nebraska National Forest (NNF) , which is mostly in Thomas County, and also included Thomas outside the forest and three other counties: Cherry, Brown, and Blaine (see Table 1). The total number of species was 116 compared to 103 for the same area about 10 days later in 1995. Twelve species seen in 1995 were absent in 1996, and 22 species seen in 1996 were absent in 1995.

North American Migration Counts (NAMC) for Boone and Sarpy Counties on 10 May 1997 are included in Table …


Relationships Between In Situ Protein Degradability And Grass Developmental Morphology, R. B. Mitchell, D. D. Redfearn, Lowell E. Moser, R. J. Grant, K. J. Moore, B. H. Kirch Jun 1997

Relationships Between In Situ Protein Degradability And Grass Developmental Morphology, R. B. Mitchell, D. D. Redfearn, Lowell E. Moser, R. J. Grant, K. J. Moore, B. H. Kirch

Department of Animal Science: Faculty Publications

The objective of this research was to determine the relationships between the morphological development and in situ ruminally degradable protein (RDP), ruminally undegradable protein (RUP), and microbial protein of two cool season grasses (intermediate wheatgrass and smooth bromegrass) and two warm season grasses (switchgrass and big bluestem). The initial growth of grass tillers grown near Mead, Nebraska was clipped at ground level six times during the 1992 growing season and morphologically classified. Mean stage was calculated. Forage was ground to pass a 2-mm screen and was incubated in ruminally fistulated steers for 16 h. The RUP was adjusted for microbial …


Nebraska Bird Review (June 1997) 65(2), Whole Issue Jun 1997

Nebraska Bird Review (June 1997) 65(2), Whole Issue

Nebraska Bird Review

A George Miksch Sutton Bibliography … 46

Birds of the Lake Ogallala State Recreation Area … 59

NOU Fall Count 1996; NAMC Count in Two Counties 10 May 1997 … 67

Table for NOU Fall Count and NAMC Spring Count … 68

Notes on Bird Sightings in Nebraska … 73

Spring Field Report, March-May 1997 … 74

Observers for Spring Field Report … 99

Red-necked Grebe at Sutherland Reservoir … 99


Birds Of The Lake Ogallala State Recreation Area, Timothy M. Bergin Jun 1997

Birds Of The Lake Ogallala State Recreation Area, Timothy M. Bergin

Nebraska Bird Review

The Lake Ogallala State Recreation Area (LOSRA) is located immediately downstream from Lake McConaughy, which was formed by the construction of Kingsley Dam across the North Platte River, and includes riparian woodland, shrubland, grassland, marsh, sandbeach, rivers, ponds, and lakes. Birds were surveyed in LOSRA from 1988 to 1992 and censused in the southwest campground of LOSRA from late May to mid-July during the 1991 and 1992 breeding seasons. Seventy-five bird species (56 terrestrial and 19 aquatic) were observed, including several hybridizing species. Thirty-one terrestrial species inhabited the southwest campground, but only 60% of these were counted during biweekly censuses; …


A George Miksch Sutton Bibliography, Paul A. Johnsgard Jun 1997

A George Miksch Sutton Bibliography, Paul A. Johnsgard

Nebraska Bird Review

Members of the Nebraska ornithologists' Union often do not realize that the reason a George Miksch Sutton sketch of a burrowing owl is used as the logo of our organization, and also appears on the cover of every issue of The Nebraska Bird Review, is because Dr. Sutton was a native Nebraskan. He was born in Bethany (now part of northeastern Lincoln) in 1898, and several years of his childhood were spent there before the family left the state permanently. In spite of Dr. Sutton's great influence on American ornithology and bird art, no bibliography of his writings has …


Red-Necked Grebe At Sutherland Reservoir, Stephen J. Dinsmore, Joel G. Jorgensen Jun 1997

Red-Necked Grebe At Sutherland Reservoir, Stephen J. Dinsmore, Joel G. Jorgensen

Nebraska Bird Review

On 26 September 1996, we saw and photographed a Red-necked Grebe at Sutherland Reservoir in Lincoln County. When we arrived at the northwest end of the lake, Dinsmore noticed a slightly smaller, bigger-headed grebe resting with a couple of Western Grebes. Both of us immediately recognized the bird as a Red-necked grebe. We studied it at close range from 2:43-3:17 p.m. CST. Compared to a Western Grebe, in addition to the size differences mentioned above, this bird was shorter-necked. The mantle was dark gray with some brown flecking. The flanks were grayish. The foreneck was very buffy, almost reddish in …


"Notes On Nebraska Bird Sightings," From Nebraska Bird Review (June 1997) 65(2)., John Dinan Jun 1997

"Notes On Nebraska Bird Sightings," From Nebraska Bird Review (June 1997) 65(2)., John Dinan

Nebraska Bird Review

Lapland Longspurs Road Kill. The 10 April 1997 snowstorm had some devastating effects on Lapland Longspurs in northeast Nebraska. Tom Welstead, Wildlife Biologist in Norfolk, reported counting 103 dead birds in 0.6 miles on Highway 121 south of Battle Creek. Other unconfirmed reports of numerous dead birds on the roads were suspected to be longspurs also. While the extent of the kill was unknown, it may have been widespread. Tom also reported seeing dead birds in the parking lot of a Quick Shop in Burwell days later, apparently deposited by falling from the grilles of vehicles after they had …


Spring Field Report, March-May 1997, W. Ross Silcock Jun 1997

Spring Field Report, March-May 1997, W. Ross Silcock

Nebraska Bird Review

First a correction: in the Fall Seasonal Report (NBR 63:101) the account on Whooping Crane listed 2 reports 25 November; these should have been 25 October.

This report includes observations, designated (B), reported to the Nebraska Birdline (402-292-5325), operated by Loren and Babs Padelford. While these are anonymous submissions, many are reported to us subsequently by the original observers; those which are not but are significant but unsubstantiated, are indicated herein as such by a phrase like "no details submitted". We have also used this phrase for other unsubstantiated reports herein. Hopefully, observers involved will send us a few …


Masthead From Nebraska Bird Review (June 1997) 65(2) Jun 1997

Masthead From Nebraska Bird Review (June 1997) 65(2)

Nebraska Bird Review

The Nebraska Bird Review is pUblished quarterly in Marc~ June, September, and December by the Nebraska Ornithologists1 Union, Inc., as its official journal, and is sent to members not in arrears for dues. Annual sUbscription rates (on a calendar-ye~ basis only): $12.50 in the united states, $15.00 in Canada and Mexico, and $17.50 for all other 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 H. Pritchard, NOU Librarian, University of Nebraska State Museum, Lincoln, NE 68588-0514.


The Effect Of Color On The Feed Preferences Of Chickens, Danny Paul Pino Jr May 1997

The Effect Of Color On The Feed Preferences Of Chickens, Danny Paul Pino Jr

Honors Capstones

No abstract provided.


Evidence For Quantitative Trait Loci Affecting Ovulation Rate In Pigs, Thomas A. Rathje, G. A. Rohrer, R. K. Johnson May 1997

Evidence For Quantitative Trait Loci Affecting Ovulation Rate In Pigs, Thomas A. Rathje, G. A. Rohrer, R. K. Johnson

Department of Animal Science: Faculty Publications

Fifty-five microsatellite markers were scored in an F2 population of pigs (n = 114 females) developed at the University of Nebraska. The population was produced by crossing a line previously selected for 10 generations using an index of ovulation rate and embryonal survival and a line selected at random. The lines were from a common base population and differed by 6.7 ovulations and 3.1 fetuses at 50 d of gestation. Ovulation rate and number of fully formed and mummified pigs were recorded for each female. Data were analyzed with regression models that included random animal effects. Likelihood-ratio tests were …


The Effect Of In Ovo Glucose Injections On Hatchability, Chick Weight, And Subsequent Body Weight, James Woodard Barr Iii May 1997

The Effect Of In Ovo Glucose Injections On Hatchability, Chick Weight, And Subsequent Body Weight, James Woodard Barr Iii

Honors Capstones

No abstract provided.


Density, Distribution, And Habitat Of Flammulated Owls In Idaho, Craig Groves, Terry Frederick, Glenn Frederick, Eric Atkinson, Melonie Atkinson, Jay Shepherd, Gregg Servheen May 1997

Density, Distribution, And Habitat Of Flammulated Owls In Idaho, Craig Groves, Terry Frederick, Glenn Frederick, Eric Atkinson, Melonie Atkinson, Jay Shepherd, Gregg Servheen

Great Basin Naturalist

From 1990 to 1992 we surveyed for Flammulated Owls (Otus flammeolus) in 3 areas in Idaho: Salmon National Forest (SNF), Payette National Forest and adjacent Hells Canyon National Recreation Area (PNF-HCNRA), and Nez Perce National Forest (NPNF). We also collected and summarized information on all historic and modern records of Flammulated Owls in Idaho. Flammulated Owls were detected on 65% of 68 routes (2–16 km in length) surveyed at densities ranging from 0.04 to 1.25 singing males/40 ha. Owls were detected on survey routes as early as 10 May and as late as 23 July. Mean percent canopy …


Diplostomiasis In Native And Introduced Fishes From Yellowstone Lake, Wyoming, Victor H. Inchausty, Michael Foutz, Richard A. Heckmann, Claudete Ruas, Paulo Ruas May 1997

Diplostomiasis In Native And Introduced Fishes From Yellowstone Lake, Wyoming, Victor H. Inchausty, Michael Foutz, Richard A. Heckmann, Claudete Ruas, Paulo Ruas

Great Basin Naturalist

Totals of 101 native Yellowstone cutthroat (Oncorhynchus clarki bouvieri), 27 introduced lake trout (Salvelinus namaycush), and 40 introduced longnose sucker (Catostomus catostomus) from Yellowstone Lake, Wyoming, USA, were examined for eye flukes. Metacercariae of the trematode fluke Diplostomum were in vitreous humor and/or lens of 94% of Yellowstone cutthroat trout, 92% of lake trout, and 78% of longnose sucker. Longnose sucker had 7% prevalence of infection in both lens and vitreous humor of metacercariae, while Yellowstone cutthroat trout had 3% and lake trout 8%. Diplostomum spathaceum was in lens tissue of 5% of infected …


Erratum May 1997

Erratum

Great Basin Naturalist

No abstract provided.


Wpa News 53 (1997), World Pheasant Association May 1997

Wpa News 53 (1997), World Pheasant Association

Galliformes Specialist Group and Affiliated Societies: Newsletters

WPA News (May 1997), number 53

Published by the World Pheasant Association


Kentucky Warbler (Vol. 73, No. 2), Kentucky Library Research Collections May 1997

Kentucky Warbler (Vol. 73, No. 2), Kentucky Library Research Collections

The Kentucky Warbler

No abstract provided.


Management Arrangements For The Western Rock Lobster Fishery For The 1997/98 Season, F. B. Prokop May 1997

Management Arrangements For The Western Rock Lobster Fishery For The 1997/98 Season, F. B. Prokop

Fisheries Management Papers

This paper deals with the proposed management strategies for the 1997/98 seasons. The purpose of this paper is to present the views of RLIAC on management arrangements for the 1997/98 rock lobster season and to indicate the strategic directions that long term management of this important fishery might take so as to ensure both its biological sustainability and the optimisation of product value for both the State and the participants in the fishery.


Aquatic Macroinvertebrates Of Rio Grande Delta Ponds, Anna Maria Navarro May 1997

Aquatic Macroinvertebrates Of Rio Grande Delta Ponds, Anna Maria Navarro

Theses and Dissertations - UTB/UTPA

The purpose of this study was to identify aquatic macroinvertebrates living in the vegetated margins of local ponds, to determine their relative abundances, and to construct a rapid bioassessment model. I collected macroinvertebrates seasonally from seven ponds in the Lower Rio Grande Valley. Collection sites included: Moore Airfield, Santa Ana National Wildlife Refuge, and Olmito Fish Hatchery. Twenty-eight samples were sampled and preserved at the University of Texas-Pan American. Seventy-six taxa were identified and were stored as a reference collection. Cluster analysis of the taxa and their relative abundances showed three distinct geographic patterns or regions. These patterns were verified …


Habitat Selection, Population Density, And Home Range Of The Elf Owl, Micrathene Whitneyl, At Santa Ana National Wildlife Refuge, Texas, Christopher Michael Gamel May 1997

Habitat Selection, Population Density, And Home Range Of The Elf Owl, Micrathene Whitneyl, At Santa Ana National Wildlife Refuge, Texas, Christopher Michael Gamel

Theses and Dissertations - UTB/UTPA

The Elf Owl, Micrathene whitneyi, is a regular summer resident of the southwestern United States. My objectives were to collect information concerning habitat selection, home range size, and population density of M. w. idonea, the subspecies occurring in the Lower Rio Grande Valley of Texas. Nocturnal surveys indicated greater use of chaparral habitat (92%) compared to riparian woodlands (8%). Utilized habitat was characterized by highest foliage density at 2.5-3.0 m, with a partial canopy at 3.8 $\pm$ 0.36 m and a semi-open understory. Home range size ranged from 0.24 to 2.6 ha, with a mean of 1.05 $\pm$ 0.33 ha. …


Habitat Use And Activities Of The Piping Plover, Charadrius Melodus, Wintering On South Padre Island, Texas, Humberto Garza Jr. May 1997

Habitat Use And Activities Of The Piping Plover, Charadrius Melodus, Wintering On South Padre Island, Texas, Humberto Garza Jr.

Theses and Dissertations - UTB/UTPA

The Piping Plover, Charadrius melodus, is endangered in its breeding sites and threatened in its wintering sites. This migratory shorebird spends 3 to 4 months on northern U.S. and southern Canadian breeding sites and the remainder of the year in Gulf of Mexico, Caribbean, and southern U.S. wintering sites. Up to 2.4% of the estimated Piping Plover population remains for the 9 to 10 month non-breeding season on South Padre Island (S.P.I.). During the non-breeding season, I conducted censuses at 15 sites in the southern portion of South Padre Island to determine Piping Plover habitat preferences. Piping Plovers prefer bay …


Evaluation Of Translocation Criteria For Trumpeter Swans Reintroduced To Northern Utah: Habitat Quality And Interactions With Tundra Swans, Katharina A. M. Engelhardt May 1997

Evaluation Of Translocation Criteria For Trumpeter Swans Reintroduced To Northern Utah: Habitat Quality And Interactions With Tundra Swans, Katharina A. M. Engelhardt

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Fifty-seven Trumpeter swans (Cygnus buccinator) were translocated to the Bear River Migratory Bird Refuge and the Bear River Club Company in northern Utah. The purpose of this effort was to encourage dispersal of the Rocky Mountain population of Trumpeter swans during the winter, and to reestablish a migratory route to southern wintering grounds. I assessed the success of the translocation by evaluating 13 translocation criteria proposed in the literature. In this study I addressed two of these criteria in detail by evaluating habitat quality at the translocation sites and by analyzing potential competitive interactions with Tundra swans ( …