Zoology Commons^™

Effects Of Methylxanthines On Newborn Rat Respiration, Craig Gatto

Masters Theses

Methylxanthines (MX), such as theophylline, are commonly used in the treatment of recurrent apnea due to their stimulant effects on the respiratory center. Structure-activity studies have demonstrated that substitution of alkyl groups on the 3-position of the xanthine nucleus results in increased bronchodilator potency, while substitution on the 1-position is important for adenosine antagonism and CNS stimulation. Three different alkylxanthines were studied to determine the structural requirements for respiratory stimulation. Respiratory rates and volumes were determined in 4- to 7-day-old rats using a volume displacement body plethysmograph. Measurements were made before and at 5 minute intervals after subcutaneous (s.c.) injection …

1988 Fall Field Day

Nebraska Bird Review

There were 65 people who attended part or all of the 1988 Fall Meeting at Halsey Forest 8-9 October. This included Dr. Jan Skoudin, of Prague, Czechoslovakia. Saturday night Dr. Julie Ann Savidge spoke on “The Extinction of an Island Forest Avifauna by an Introduced Snake”, a summary of her investigation of the brown tree snake’s effect on Guam’s avifauna. There was also a short slide show. The rest of the time was available for birding. A few NOU members came early enough on Friday to work with members of the US Forest Service on a butterfly and hummingbird garden …

"Index To Volume 56," From Nebraska Bird Review (December 1988) 56(4).

Nebraska Bird Review

Index to Volume 56

9 pages

"Notes," From Nebraska Bird Review (December 1988) 56(4)

Nebraska Bird Review

ADDITIONAL REPORTS FROM THOMAS COUNTY, SPRING 1988. Mike Dwyer, then working on a grouse telemetry project at Halsey Forest for the Game and Parks Commission, reported a Northern Saw-whet Owl 10 May. Mr. Dwyer's comments were: Most likely territorial male. Constant repetitions whistle. First vocalizations heard at 2345 h. in mixed hardwood/conifers. On 13 June he reported a Chuck-will's-widow, with these remarks: Was close enough to detect the "chuck" syllable of the call. Calling occurred at dusk in mixed hardwoods/conifers.

"Book Reviews," From Nebraska Bird Review (December 1988) 56(4).

Nebraska Bird Review

The Collins Guide to the Birds of Britian and Europe, with North Africa and the Middle East, Hermann Heinzel, Richard Fitter, and John Parslow, 326 pp., 4 1/2 x 7 1/2, index. The Stephen Greene Press, Lexing ton, Mass., softbound $15.95.

The Collins Field Guide to the Birds of West Africa, William Serle and Gerard J. Morel, 352 pp., 5 x 8, index. The Stephen Greene Press, Lexington, Mass., hardbound $21.95.

Announcement About The 20th International Ornithological Congress In Nebraska Bird Review (December 1988) 56(4)

Nebraska Bird Review

THE 20TH INTERNATIONAL ORNITHOLOGICAL CONGRESS will take place in Christchurch, New Zealand, on 2-9 December 1990. The Congress programme will include 7 plenary lectures, 48 symposia, contributed papers (spoken and poster), workshops, round-table discussions and films. There will be a mid-Congress excursion, day. Longer tours are planned to interesting ornithological sites in New Zealand before anc.' after the Congress, including the post Congress cruises to sub-antarctic islands.

The Official List Of The Birds Of Nebraska

Nebraska Bird Review

The following is a list of species of birds whose occurrence in Nebraska has been proven to the satisfaction of the Nebraska Ornithologists' Union Records Committee. It includes records considered through 31 Dec. 1987. The sequence and nomenclature follow that used in the A.O.U. Checklist of North American Birds, 6th ed., 1983, and its supplements through the 36th.

The list includes 406 species; several other species are currently under review. The list also indicates how frequently each species has been acceptably reported in the past decade (1977-1987) to give some idea of current status. Frequency of occurrence is indicated …

Nebraska Bird Review (December 1988) 56(4), Whole Issue

Nebraska Bird Review

Table of Contents

The Official List of the Birds of Nebraska.................86

1988 Fall Field Day.................97

Book Reviews.................97

Notes.................99

Index to Volume 56 .................100

Coccidia (Apicomplexa: Eimeriidae) From The Subterranean Rodent Ctenomys Opimus Wagner (Ctenomyidae) From Bolivia, South America, Christine R. Lambert, Scott Lyell Gardner, Donald W. Duszynski

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Of 35 tuco-tucos (Ctenomys opimus) collected in Bolivia, South America, 31 (88%) had eimerian oocysts in their feces at the time they were examined. Eighteen (58%) of the 31 infected animals were concurrently infected with 2 or 3 eimerian species. Four species of Eimeria were recovered and are described as new species based on the characteristics of sporulated oocysts. Oocysts of E. granifera n. sp. were ellipsoidal, 21.1 x 17.2 (15-26 x 11-20), μm with sporocysts ovoidal, 11.3 x 7.1 (8-14 x 5-9), μm. Oocysts of Eimeria montuosi n. sp. were spheroidal, 24.2 x 22.0 (21-28 x …

Cestodes Of The Genus Hymenolepis Weinland, 1858 Sensu Stricto From Pocket Gophers Geomys And Thomomys Spp. (Rodentia: Geomyidae) In Colorado And Oregon, With A Discriminant Analysis Of Four Species Of Hymenolepis, Scott Lyell Gardner, Gerald D. Schmidt

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Cestodes found to represent previously undescribed members of the genus Hymenolepis s. str. (Yamaguti, 1959) were recovered from pocket gophers, Geomys bursarius (Shaw), in northeastern Colorado. Hymenolepis weldensis n. sp. and H. geomydis n. sp., not occurring together in any individual host, were found in 3 and 8%, respectively, of pocket gophers examined for helminths. The life cycle of H. weldensis was completed in the laboratory using beetles, Tenebrio molitor (L.), as intermediate hosts, and pocket gophers of three genera (Geomys, Thomomys, and Pappogeomys) as definitive hosts. Development of H. weldensis did not …

Full Issue, Vol. 12

Great Basin Naturalist Memoirs

No abstract provided.

End Matter, Vol. 12

Great Basin Naturalist Memoirs

No abstract provided.

The Development And Comparative Morphology Of The Mandibular Symphysis In Salamanders, Jennifer Lorenz Elwood

Biological Sciences Theses & Dissertations

Despite the extensive literature on salamander cranial morphology, few authors mention the structure or development of the mandibular symphysis. Adult specimens representing eight caudate families and larval Ambystoma opacum, representing nine developmental stages, were evaluated histologically to determine the structure and development of the mandibular symphysis.

From this analysis it was determined that early in the ontogeny of the mandibular symphysis Meckel's cartilages are separated by a band of undifferentiated cartilage. As development progresses, this band of undifferentiated cartilage gradually transforms into a wedge of fibrocartilage which fuses to Meckel's cartilages.

Symphyseal morphologies of the adult caudates could be broken …

End Matter, Vol. 12, Index

Great Basin Naturalist Memoirs

No abstract provided.

Front Matter, Vol. 12

Great Basin Naturalist Memoirs

No abstract provided.

Masthead From Nebraska Bird Review (September 1988) 56(3).

Nebraska Bird Review

Published quarterly in March, June, September, and December, by the Nebraska Ornithologists' Union Inc. as its official journal and sent to all members who are not in arrears for dues. Subscriptions (on a calendar year basis only) are $10.00 per year in the United States, $12.00 per year in Canada and Mexico, and $12.50 per year in all other countries, payable in advance. Single copies are $3.00 each, postpaid, in the United States; $3.50 elsewhere.

"Notes" From Nebraska Bird Review (Sept 1988) 56(3).

Nebraska Bird Review

BRANT AT FUNK LAGOON. Rick Peifer and I co-led a Bell Museum of Natural History (University of Minnesota) field trip to the Platte River ill March 1988. On 21 March about 25 of us went to Funk WPA (Phelps Co.) about 14:00, We found only a few thousand waterfowl, the remainder had apparently been driven off by USFWS personnel as a preventative measure against a further outbreak of fowl cholera. We were on the NI S road between sections 1 and 2, T6N, R17W, and saw only about 1,000 to 1,500 geese (mostly Canada’s, plus some White-fronted) plus a few …

1988 (Sixty-Third) Spring Occurrence Report

Nebraska Bird Review

Three hundred and six species (plus the possibilities that the Accipter and Empidonax species were ones that were not listed, and that a Louisiana Waterthrush was recorded in Nebraska) are listed in this report, from 15 locations, plus 13 "spot check" columns involving 34 counties. In 1987 there were 288 species from 13 locations and 6 "spot check" columns involving 9 counties; 1986 304 from 13 locations and 9 "spot check" columns involving 24 counties; 1985 296 from 13 locations and 9 "spot check" columns (plus additions on NBR 53: 70) involving 22 counties; and in 1984 293 from 12 …

"Book Review," In Nebraska Bird Review (September 1988) 56(3), Rick Wright

Nebraska Bird Review

Nebraska Birds: Breeding Status and Distribution, by James E. Ducey, maps by Remote Sensing Applications Laboratory, University of Nebraska at Omaha. Illustrated by Paul A. Johnsgard, xiii + 148 pp., 8½ x 11, Simmons-Boardman Books, Omaha, 1988, soft cover $19.95.

White-Winged Dove In Dawson County, Lloyd G. Kaufman, Paul Kaufman

Nebraska Bird Review

On 3 July 1988, my wile and I saw a dove south of Cozad, Nebraska. We were driving at road speed, and not really bird watching. I caught a glimpse of white on the dove's wings as it flew and by the time I got stopped the dove circled about 0.25 mile away. We never got our binoculars on the dove at all, but we both noted the white trailing edge of the wings and on the tail. We are not sure enough to claim anything. I have been by there 15 to 20 times since then and have not …

Nebraska Bird Review (September 1988) 56(3), Whole Issue

Nebraska Bird Review

Table of Contents

White-winged Dove in Dawson County? .............54

1988 (Sixty-third) Spring Occurrence Report .............55

Notes .............77

Book Review .............83

Computer Analysis Of Cross Sections Of Leaves Of Chrysothamnus Taxa And Their Relation To Environmental Conditions, J. Huang, W. M. Hess, D. J. Weber, E. D. Mcarthur, S. E. Meyer, R. Seegmiller

Great Basin Naturalist

Thirty-eight accessions of 20 taxa (species and subspecies) of Chrysothamnus from a range of environments were grown in a uniform garden. During mid-June, terminal and lateral leaves were removed, fixed, and processed for light-microscopy studies. Area and perimeter measurements of ink tracings of midleaf vein cross sections were measured using computer-scan techniques. Leaf area and perimeter were compared with vein perimeter and area measurements. Area and perimeter of these Chrysothamnus leaves varied in response to the environment at the collection location. Plants native to hot, dry conditions had small, thick leaves, whereas plants native to cooler, more mesic conditions had …

Gibbon Classification: The Issue Of Species And Subspecies, Erin Lee Osterud

Dissertations and Theses

Gibbon classification at the species and subspecies levels has been hotly debated for the last 200 years. This thesis explores the reasons for this debate. Authorities agree that siamang, concolor, kloss and hoolock are species, while there is complete lack of agreement on lar, agile, moloch, Mueller's and pileated. The disagreement results from the use and emphasis of different character traits, and from debate on the occurrence and importance of gene flow.

Comparative Analysis Of The Effects Of Visual And Auditory Stimuli On Avian Mobbing Behavior, C. Ray Chandler, Robert K. Rose

Biological Sciences Faculty Publications

Both visual and auditory stimuli elicit avian mobbing behavior, but there is little comparative information on their isolated and additive effects. Using three combinations of two experimental stimuli (mount and tape of an Eastern Screech-Owl, Otus asio) we tested the effects of stimuli on the frequency, intensity, and duration of avian mobbing behavior. Of 169 mount-only trials, only 11 (6.5%) were successful in attracting birds. Tape-only (n = 169) and mount-and-tape (n = 170) were equally successful in attracting birds (approximately 85% of all trials), but mount-and-tape trials were more likely to initiate mobbing behavior. Birds responding …

A Light And Electron Microscopic Study Of The Rat Olfactory Tubercle: Normal Morphology And Acetylcholinesterase Localization, James Curtis Woodley

Biological Sciences Theses & Dissertations

A cytoarchitectural analysis of the rat olfactory tubercle using Nissl-stained coronal sections revealed that the dense cell layer (DCL) consisted of medium sized striatal cells in the cortical regions and small sized "granule" cells in the cap regions. Also delineated from this experiment was a rim of neuropil, nearly devoid of neurons as well as neuronal processes, outlining the islands of Calleja. Acetylcholinesterase (AChE) localization utilizing light microscopy revealed that the olfactory tubercles (OT) contained AChE-positive fibers that were orientated dorsoventrally in the molecular and multiform layers. The DCL consisted of only fibers en passant and putative terminals. Diisopropylfluorophosphate (DFP) …

A Second Bald Eagle Nest In Nebraska, Greg Wingfield

Nebraska Bird Review

The Bald Eagle (Haliaeetus leucocephalus) in Nebraska is considered an uncommon migrant and locally common winter resident. Formerly, the species was a common breeder in eastern Nebraska (Johnsgard, 1986). The only previously known modern (1900s) nesting attempt took place in 1973 in Cedar Co., northeast of Crofton, Nebraska (Lock and Shuckman, 1973). This nest occurred along the Missouri River, downstream of Lewis and Clark Reservoir. Between the latter part of January and 25 March 1973, a pair of Eagles was observed while building a nest, copulating, perching near the nest, and sitting on the completed nest. Eventually, the …

1987 Nebraska Nesting Survey, Esther V. Bennett

Nebraska Bird Review

Data on the 1987 nesting season in Nebraska were received from 32 observers and three organizations, reporting on 72 species from 46 counties. Counties on the tabulation are listed in a west to east order, with the northernmost of the approximately equal locations given first. Numbers represent Nest Record Cards; A (for aliment) represents carrying food; C represents colony for which no nest numbers were reported (but 15 individuals were reported); F represents feeding young; N represents nests observed for which no Nest Record Card was submitted; P represents brood patch; X represents a nest built and occupied for a …

Book Reviews Of Bird Navigation: The Solution Of A Mystery?, The Last Of The Curlews, A Naturalist's Sketchbook, Bird Walk Through The Bible, Life Histories Of North American Petrels And Pelicans And Their Allies And Love Of Loons, Thomas E. Labedz

Nebraska Bird Review

Bird Navigation: The Solution of a Mystery?, R. Robin Baker, 1984, Holmes & Meier Publishers, Inc., New York. vi + 256 pp., ISBN 0-340-33416-9, softcover, no price given. Originally published by Hodder & Stoughton Ltd. in Great Britain but handled in the United States by Holmes & Meier Publishers, Inc., Import Division, IUB Building, 30 Irving Place, New York, NY 10003.

R. Robin Baker, Reader in Zoology at the University of Manchester, is a noted authority on avian navigation. The word "solution" in the title of this book is somewhat misleading because this book does not solve the mystery of …

Notes- Nebraska Bird Review June 1988

Nebraska Bird Review

YOUNG GREAT HORNED OWLS On 5 April 1988 we banded two young Great Horned Owls that were in a nest near Laurel, in Cedar Co., Neb. An adult Owl was first seen on this nest 3 March. The nest was approximately 31 feet above the ground in a dead Siberian elm tree. One adult Owl was in the nest as we approached it at about 7:00 PM. The adult bird flew of the nest and remained about 200 meters away, in a small grove of trees. It took us about 35 minutes to set up our ladder, retrieve and band …

Occurrence Of Ross Geese (Chen Rossii) Detected From Avian Cholera Losses, Randy G. Stutheit

Nebraska Bird Review

During the annual spring waterfowl migration, an estimated 5-7 million ducks and geese pass through the Nebraska Rainwater Basins area. The Rainwater Basins area covers all or parts of 17 counties in south-central Nebraska, encompassing some 4,200 square miles. Wetlands of various size, depth, and water permanency are scattered throughout this area. These wetlands are important resting and feeding areas for ducks and geese on their migration north to the breeding grounds. Avian cholera, a highly infectious bacterial disease of waterfowl, has also been an annual visitor to the Rainwater Basins since 1975, killing from as many as an estimated …