Life Sciences Commons^™

Cytotypes And Morphometrics Of Two Phyllostomatid Bats, Micronycteris Hirsuta And Vampyressa Pusilla, Robert J. Baker, Hugh H. Genoways, William J. Bleier, Jerry W. Warner

University of Nebraska State Museum: Mammalogy Papers

Jackson and Patton stated that the key to understanding mechanisms of chromosomal evolution lies in studies of chromosomal variation within populations that can hybridize. Hybrids between cytotypes contain the answer to problems of meiotic pairing and reduced fertility, as well as information concerning the nature of zones of contact. However, before detailed studies can be initiated, chromosomal races and hybrid zones must be located. Few chromosomal races have been described for bats. Within the family Vespertilionidae, five species are known to have such races and races have been reported in two species of the family Phyllostomatidae.

Described are chromosomal races …

Cytotypes And Morphometrics Of Two Phyllostomatid Bats, Micronycteris Hirsuta And Vampyressa Pusilla, Robert J. Baker, Hugh H. Genoways, William J. Bleier, Jerry W. Warner

University of Nebraska State Museum: Mammalogy Papers

As pointed out by Jackson (1971) and Patton (1972), the key to understanding mechanisms of chromosomal evolution lies in studies of chromosomal variation within populations that can hybridize. Hybrids between cytotypes contain the answer to problems of meiotic pairing and reduced fertility, as well as information concerning the nature of zones of contact. However, before detailed studies can be initiated, chromosomal races and hybrid zones must be located. Few chromosomal races have been described for bats (Baker, 1970a). Within the family Vespertilionidae, five species are known to have such races (Baker, 1970a) and races have been reported in two species …

Natural And Unnatural Selection In A Wild Goose, Paul A. Johnsgard

Papers in Ornithology

Blue goose and snow goose color phases enable the species to reproduce efficiently in the harsh Canadian climate. But hunters, more eager than sporting, are upsetting this finely tuned pattern of survival.

How Many Cranes Make A Skyful?, Paul A. Johnsgard

Paul Johnsgard Collection

Every year thousands of lesser sandhills congregate along the Platte River in Nebraska on their spring migration northwards. Mainly because of local damage caused by the birds during their fall migration, they have been legally hunted since 1961. Can the population survive such persistent destruction?

One may ask the question “How many cranes are enough?” This is perhaps analogous to the rhetorical question as to how many redwood trees are needed to make a viable forest; for a remnant crane population is not only unimpressive but also seemingly does not survive or reproduce well, judging from population trends in the …

Whole Issue Nebraska Bird Review (December 1973) 41(4)

Nebraska Bird Review

TABLE OF CONTENTS

Recent Mammals of Crescent Lake National Wildlife Refuge, Garden County, Nebraska................ 71

A Bald Eagle Nest in Nebraska................ 76

Vertical Stratification among Selected Species of Birds ................77

Notes ................79

Index of Volume XXXXI ................81

Heligmosomoides Johnsoni Sp. Nov. (Nematoda: Heligmosomatidae) From The Heather Vole, Phenacomys Intermedius Merriam, Virginia R. Rausch, Robert L. Rausch

Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications

Heligmosomoides johnsoni sp. noy. is described from the cecum of the heather vole, Phenacomys intermedius Merriam, from the Olympic Mountains, Washington. The absence of longitudinal cuticular ridges dorsally separates H. johnsoni from species of Heligmosomoides other than H. hudsoni (Cameron, 1937), which occurs in varying lemmings, Dicrostonyx spp., and from which H. johnsoni is distinguished by its longer spicules, form of the dorsal ray, and other characters. Both Phenacomys and Dicrostonyx have a specialized cecum, with long villi around which the nematodes are found tightly coiled. The zoogeography of heligmosomid nematodes in Phenacomys is briefly discussed.

French abstract: On décrit …

Agricultural Experiment Station News December 1973

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTOR'S OFFICE
Production of Agricultural Research and Extension
PERSONNEL ACTIONS
GRANTS AND CONTRACTS
GENERAL NOTES
AGRICULTURAL EXPERIMENT STATION PUBLICATIONS – NOVEMBER 1973
BULLETINS PRINTED

Nsca - Asc - National Plan For Biological Collections, Asc Committee

Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications

American systematics collections: A national plan. Developed by a stellar group of biologists including David Wake and Peter Raven, this plan called for action by the systematics community. The estimate of needs in 1973 called for about 63 million USD for the next five years just to keep the US National Collections from disintegrating and to get them in shape to mount the huge effort needed to fully inventory the biota of the earth (a plan that was not even dreamed of until about the year 1995).

A report to the nation's systematics collections community, and includes a National Plan …

The Prairie Naturalist Volume 5, No.4. December 1973

The Prairie Naturalist

REESTABLISHMENT OF PRAIRIE IN EASTERN NORTH DAKOTA ▪ O. A. Stevens

THE AGE DISTRIBUTION OF ENVIRONMENTAL PERIODICALS ▪ D. H. Johnson

SOME OBSERVATIONS ON THE ECOLOGY OF PLUMATELLA REPENS (L.) (BRYOZOA: PLUMATELLIDAE) IN NORTHEASTERN NORTH DAKOTA ▪ R. D. Stoaks

CHRISTMAS BIRD COUNTS FOR NORTH DAKOTA - 1973 ▪ R. N. Randall 61

NOTE: Red-bellied Woodpecker in Rolette, County, North Dakota ▪ D. T. Disrud 52

Index to Volume 5

Morphological And Physiological Factors Related To Yield Of Alfalfa, A. L. Foutz, Wallace Wilhelm, A. K. Dobrenz

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Several morphological and physiological factors were measured on clones of alfalfa (Medicago sativa L. ‘Mesa- Sirsa’) which displayed a wide range in SLW, leaflet weight and leaflet area. Apparent photosynthesis, dark respiration and post-illumination burst expressed as mg C0₂ dm^-2hr^-1 were not related to yield. However, when the rate of each factor was expressed on a whole plant basis (rate x leaf area per plant) , significant relationships were found with yield. Correlation coefficients between total apparent photosynthesis, total dark respiration, total post-illumination C0₂ burst and yield were r = .71*, r = .77* …

Systematics And Evolutionary Relationships Of Spiny Pocket Mice, Genus Liomys, Hugh H. Genoways

University of Nebraska State Museum: Mammalogy Papers

Introduction

Spiny pocket mice of the genus Liomys are members of the rodent family Heteromyidae and together with the genus Heteromys form the subfamily Heteromyinae. Their geographic range extends from northern Sonora, in western Mexico, and southern Texas southward to the vicinity of the Panama Canal Zone. Within this area, members of the genus occur mainly in dry to arid situations being replaced in areas of rain forest and cloud forest by members of the genus Heteromys. The vernacular name for Liomys is based on the fact that many of their hairs have been modified in the form of …

Results Of The Third International Winter Wheat Performance Nursery, J. E. Stroike, V. A. Johnson, J. W. Schmidt, P. J. Mattern, K. D. Wilhelmi

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

This is the third report of results from an International Winter Wheat Performance Nursery (IWWPN) organized in 1968 by the Nebraska Agricultural Experiment Station and the Agricultural Research Service, U.S. Department of Agriculture, under a contract with the Agency for International Development, U.S. Department of State. The nursery was designed to (1) test the adaptation of winter wheat varieties in a range of latitudes, daylengths, fertility conditions, water management, and disease complexes; (2) identify superior winter varieties to serve as recipient genotypes for high protein and high lysine genes, and (3) test the degree of expression and stability of the …

Diphyllobothrium Ursi From Man In British Columbia--First Report Of This Tapeworm In Canada, Leo Margolis, Robert L. Rausch, E. Robertson

Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications

A case of human infection in British Columbia by the tapeworm Diphyllobothrium ursi is reported and the likely source of infection is discussed. This is the first report of D. ursi in Canada and the third from humans.

Results Of Systematic Analyses For Protein And Lysine Composition Of Common Wheats (Triticum Aestivum L.) In The Usda World Collection, K. P. Vogel, V. A. Johnson, P. J. Mattern

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

Protein and lysine contents of 12,613 common wheats of the USDA World Wheat Collection were determined in order to identify wheats that may be sources of genes for high protein and high lysine. Results indicate that significant genetic differences in protein and lysine content probably exist among world collection common wheats. Selection criteria have been developed for further evaluation of World Collection lines high in protein and lysine content.

Agricultural Experiment Station News November 1973

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTOR'S DESK
NOTICE
PERSONNEL ACTIONS
GRANTS AND CONTRACTS
GENERAL NOTES
NEBRASKA AGRICULTURAL EXPERIMENT STATION PUBLICATIONS - October 1973
FEATURE ARTICLES

Polyperiod Analyses Of Investment Strategy For Nebraska Grain-Livestock Farms, Glenn A. Helmers, Gary W. Lentz

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

This study is directed toward investment strategies farm firms in the Great Plains may utilize to achieve their individual goals. Farm firm growth is considered important to the extent that firm growth represents movement toward meeting the behavioral goals of farm operators.

Potential Insect-Control Applications For Microwaves, Stuart Nelson

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

The idea of using radiofrequency (RF) electric energy for controlling insects is not new. Experiments in the United States to control insects with high-frequency electric fields date back at least 45 years, and reports indicate development of similar interests in Europe during the same period. Many researchers have explored the possibilities since then, and their findings have been reviewed in several publications (Thomas, 1952; Frings, 1952; Peredel'skii, 1956; van den Bruel et al., 1960; Watters, 1962; Nelson, 1966, 1967, 1972, 1973). The purposes in preparing this paper are to summarize these findings in a general way, to discuss some of …

Sweetclover Weevil: Adenosine As A Feeding Stimulant, G. L. Beland, Francis A. Haskins, G. R. Manglitz, Herman J. Gorz

Department of Agronomy and Horticulture: Faculty Publications

Adult Sitona cylindricoIlis Fåhraeus responded to adenosine in bioassays for feeding-stimulant activity. The molar concentration of adenosine which elicited maximum feeding in the bioassay was less than 1/10 of the sucrose concentration required for maximum feeding. Various purines, pyrimidines, nucleosides, nucleotides, and related compounds were compared with adenosine in bioassays for weevil-feeding stimulant activity. Of all compounds tested, only adenosine triphosphate and adenosine monophosphate appeared to act as feeding stimulants; at the concentrations used, their activities were substantially lower than that of adenosine. Free adenosine was isolated from leaf extracts of weevil-susceptible Melilotus officinalis (L.) Lam. by ion-exchange and paper …

Agricultural Experiment Station News October 1973

Agricultural Research Division: News and Annual Reports

CONTENTS:
PROGRESS REPORT ON OPERATION STAR
1973-1974 ENROLLMENTS
PERSONNEL ACTIONS
GRANTS AND CONTRACTS
GENERAL NOTES
AGRICULTURAL EXPERIMENT STATION PUBLICATIONS - September 1973
BULLETINS PRINTED

The Effects Of Soil Salinity And Meloidoflyne Javanica On Tomato, Armand R. Maggenti, Adnan Hardan

Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications

A non-sodic, non-saline sandy loam soil was salinized to anion-cation ratios similar to those naturally occurring in Iraq and California. The interactions of saline soils (conductivities 4, 8, 12 and 16 mmhos/cm) with a moderately salt-tolerant plant (Lycopersicon esculentum 'Marimond') and a plant parasitic nematode (Meloidogyne favanica) were investigated. Plant parasitic nematodes were shown to be an important modifying influence within the plant environment, either accentuating or ameliorating salinity stress effects.

The Other Side Of Biology, John J. Janovy Jr.

John Janovy Publications

Discusses biology as increasingly multidisciplinary.

Characteristics Of Deoxyribonucleic Acid Polymerase Isolated From Spores Of Rhizopus Stolonifer , Cheng-Shung Gong, Larry Dunkle, James L. Van Etten

Department of Plant Pathology: Faculty Publications

Deoxyribonucleic acid (DNA)-dependent DNA polymerase was purified several hundredfold from germinated and ungerminated spores of the fungus Rhizopus stolonifer. The partially purified enzymes from both spore stages exhibited identical characteristics; incorporation of [³H] deoxythymidine monophosphate into DNA required Mg²⁺, DNA, a reducing agent, and the simultaneous presence of deoxyguanosine triphosphate, deoxycytidine triphosphate, and deoxyadenosine triphosphate. Heat-denatured and activated DNAs were better templates than were native DNAs. The buoyant density of the radioactive product of the reaction was similar to that of the template DNA. The enzyme is probably composed of a single polypeptide chain with …

Rna Polymerase Activity Associated With Bacteriophage Φ6, James L. Van Etten, A. K. Vidaver, R. K. Koski, J. S. Semancik

Department of Plant Pathology: Faculty Publications

The Pseudomonas phaseolicola bacteriophage φ6 incorporated labeled UTP into an acid-insoluble precipitate. Incorporation was dependent on the presence of manganese acetate, ATP, GTP, CTP, and a short heat treatment of the phage; the reaction was stimulated by NH,Cl. The substitution of ¹⁴C-ATP, -CTP or -GTP for UTP, together with the appropriate unlabeled ribonucleoside triphosphates, disclosed that CMP was incorporated to the greatest extent followed by GMP, UMP, and AMP. Radioactive RNAs formed by the reaction were resistant to RNases A and T₁ in high salt but susceptible to these nucleases in low salt. The labeled RNA co-sedimented and …

Whole Issue Nebraska Bird Review (September 1973) 41(3)

Nebraska Bird Review

TABLE OF CONTENTS

1973 (Forty-eighth) Spring Migration and Occurrence Report ....................46

Eutrophication Field Trip.................... 66

Notes ....................66

Book Review ....................68

Agricultural Experiment Station News September 1973

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTORS OFFICE
DEAN E. F. FROLlK
PERSONNEL ACTIONS
GRANTS AND CONTRACTS
GENERAL NOTES
AGRICULTURAL EXPERIMENT STATION PUBLICATIONS – August 1973
BULLETINS PRINTED

The Prairie Naturalist Volume 5, No.3. September 1973

The Prairie Naturalist

PRELIMINARY LIST OF NATURAL AREAS IN NORTH DAKOTA ▪ Harold A. Kantrud

BREEDING BIRD POPULATIONS OF RIVERINE FORESTS IN EASTERN MONTANA ▪ Roger L. Kroodsma

Agricultural Experiment Station News August 1973

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTOR'S OFFICE
PERSONNEL ACTIONS
GRANTS AND CONTRACTS
GENERAL NOTES
NEBRASKA AGRICULTURAL EXPERIMENT STATION PUBLICATIONS - July 1973
BULLETINS PRINTED

Nongeographic Variation In The Long-Nosed Bat, Choeroniscus Intermedius, Hugh H. Genoways, Robert J. Baker, Bernard Wyatt

University of Nebraska State Museum: Mammalogy Papers

Of the 12 measurements analyzed, only length of tail exhibited enough individual variation to warrant its deletion in analysis of geographic or interspecific variation in the genus Choeroniscus. Also, because of the difficulty in consistently taking the measurement, we also suggest elimination of postorbital constriction.

Specimens of Choeroniscus intermedius were found to exhibit significant secondary sexual variation in five of the 12 measurements studied. Therefore, it is clear that males and females should be separated in analyses of variation within members of the genus. Females were found to be the larger in 10 of the 12 measurements--similar to the …

Beef Cattle - At What Weight Should They Be Sold?, Franz Schwarz, J. B. Hassler

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

Specific objectives of this study are: (1) To evaluate the recent historical price relationships of the beef sector indicative of profit and loss conditions caused by disorderly aggregate performance in production and marketing. (2) To analyze the risks involved at various positions in the chain of production and marketing activities. (3) To suggest information and action programs which could reduce the amount of disorderly production and marketing.

Location Of Grapevine Fanleaf And Yellow Mosaic Virus Particles In Xiphinema Index, D. J. Raski, Armand R. Maggenti, N. O. Jones

Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications

Particles of fanleaf and yellow mosaic viruses are reported in the lumen of the esophagus of Xiphinerna index. Differences in cuticular morphology suggest differences in charged receptor sites which may offer an explanation for virus location and orderly arrangement.