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Articles 1 - 30 of 74
Full-Text Articles in Animal Sciences
Revised Checklist Of North American Mammals North Of Mexico, 1979, J. Knox Jones Jr., Dilford C. Carter, Hugh H. Genoways
Revised Checklist Of North American Mammals North Of Mexico, 1979, J. Knox Jones Jr., Dilford C. Carter, Hugh H. Genoways
University of Nebraska State Museum: Mammalogy Papers
Faunal checklists provide useful ready references for many kinds of endeavors, both in the laboratory and in the field, and are particularly helpful to students. Since publication more than four years ago of a "Revised checklist of North American mammals north of Mexico" (Jones et al., 1975), demand for that list has exceeded the supply set aside for general distribution; additionally, systematic studies of mammals published since 1974 necessitate changes in the list. Primarily for these reasons, a newly revised checklist of mammalian species occurring in the Nearctic to the north of Mexico is here presented. As in this and …
Variation In Pappogeomys Castanops (Geomyidae) On The Llano Estacado Of Texas And New Mexico, Robert C. Dowler, Hugh H. Genoways
Variation In Pappogeomys Castanops (Geomyidae) On The Llano Estacado Of Texas And New Mexico, Robert C. Dowler, Hugh H. Genoways
University of Nebraska State Museum: Mammalogy Papers
Nongeographic and geographic variation in the yellow-cheeked pocket gopher, Pappogeomys castanops, were analyzed in specimens collected in northwestern Texas and eastern New Mexico. Univariate and multivariate methods of analysis were utilized to assess variation in morphometric characters among 12 samples of P. castanops. Because of significant variation with age, only adult specimens were used in analyses. Adult males were significantly larger than females in all 13 characters studied. Our analyses of geographic variation reveal that those specimens previously assigned to the subspecies P. c. simulans are not sufficiently distinct to warrant subspecific designation.
Whole Issue Nebraska Bird Review (December 1979) 47(4)
Whole Issue Nebraska Bird Review (December 1979) 47(4)
Nebraska Bird Review
Table of Contents
Great Gray Owl Distribution, Winter 1977-78 ....................................... 62
Book Reviews .................................................................. 65
Notes ......................................................................... 66
Index of Volume 47 ............................................................. 70
Concurrent Drinking By Pigeons On Fixed-Interval Reinforcement Schedules, Robert H.I. Dale
Concurrent Drinking By Pigeons On Fixed-Interval Reinforcement Schedules, Robert H.I. Dale
Scholarship and Professional Work - LAS
Three experienced pigeons were exposed to at least ten consecutive 100-min sessions on each of three food-reinforced fixed-interval (FI) schedules: FI 50-sec, FI 100-sec and FI 200-sec. Water was freely available. Drinking was largely confined to the first third of each fixed interval, and the mean sessional water intake was directly related to the food-reinforcement rate for each animal. The animals drank very quickly, i.e., 3-4 ml/sec, but the drinking bouts were brief, i.e., 0.8-1.4 sec, and infrequent, i.e., 2-5/hr. The parameters describing concurrent drinking in the pigeon are strikingly different from those describing rats’ drinking under similar reinforcement schedules, …
Dragonflies At The Uwm Cedar-Sauk Field Station, Tom Pleyte
Dragonflies At The Uwm Cedar-Sauk Field Station, Tom Pleyte
Field Station Bulletins
When visitors and classes utilize the Field Station facilities during the summer months, they seldom fail to notice dragonflies coursing the old fields or hawking mosquitoes over the little ponds. Their beauty and strong powers of flight have long fascinated observers, but few casual on-lookers are aware of the number of species present at the Field Station and the complexity of their behavior and annual cycles. This report will attempt to familiarize the reader with some aspects of the biology of dragonflies, the species of dragonflies present at the UWM Field Station and the times of the year when each …
Leachable Phosphorus Levels Of Urban Street Trees: Contributions To Urban Runoff, John R. Dorney
Leachable Phosphorus Levels Of Urban Street Trees: Contributions To Urban Runoff, John R. Dorney
Field Station Bulletins
Intelligent environmental management of urban areas depends upon a thorough understanding of urban ecosystem properties, such as structure, energy flow and materials cycles. This report examines the phosphorous cycle in urban runoff - a portion of the urban phosphorous cycle - which is involved in diffuse (non-point) source pollution from urban areas. The goals of my research were to determine if street tree leaves and seeds are a source of phosphorous in urban runoff and if so, how these levels varied between tree species.
Records Of Bats (Mammalia: Chiroptera) From Suriname, Hugh H. Genoways, Stephen L. Williams
Records Of Bats (Mammalia: Chiroptera) From Suriname, Hugh H. Genoways, Stephen L. Williams
University of Nebraska State Museum: Mammalogy Papers
Ten species are added to the 60 species of bats already known to occur in Suriname. The species added include Micronycteris minuta, M. nicefori, Phylloderma stenops, Tonatia bidens, T. brasiliense, Carollia brevicauda, Chiroderma trinitatum, Vampyressa bidens, Promops centralis, and P. nasutus. Additional information is presented on five species previously recorded from Suriname, including Pteronotus parnellii, Mimon crenulatum, Artibeus concolor, Chiroderma villosum, and Sturnira tildae.
Whole Issue Nebraska Bird Review (September 1979) 47(3)
Whole Issue Nebraska Bird Review (September 1979) 47(3)
Nebraska Bird Review
Table of Contents
1979 (Fifty-fourth) Spring Migration and Occurrence Report .......................... 42
The Seventy-eight Annual Meeting ................................................ 54
1979 Fall Field Day................................. 55
Book Reviews.............................................................. 56
Successful Golden Eagle Nest in Southwest Nebraska ............................... 57
Notes ......................................................................... 57
Distribution And Natural History Of Amphibians And Reptiles In Western Nebraska With Ecological Notes On The Herpetiles Of Arapaho Prairie, Royce E. Ballinger, John D. Lynch, Patrick H. Cole
Distribution And Natural History Of Amphibians And Reptiles In Western Nebraska With Ecological Notes On The Herpetiles Of Arapaho Prairie, Royce E. Ballinger, John D. Lynch, Patrick H. Cole
Papers in Herpetology
Introduction: The distribution and natural history of amphibians and reptiles have been little studied in the northern states of the great plains. Relative to other vertebrate groups, the herpetofauna of grasslands is depauperate particularly at higher latitudes where temperature becomes a limiting factor to poikilotherms. Nevertheless, certain species of amphibians and reptiles are common in specific habitats and thus form a conspicuous component of the prairie fauna. The purposes of the present study were to document the distributions of herpetiles in a specified region of western Nebraska and to describe general aspects of their natural history. We hope such information …
Specialized Insectivory: Beetle-Eatinga Nd Moth-Eating Molossid Bats, Patricia W. Freeman
Specialized Insectivory: Beetle-Eatinga Nd Moth-Eating Molossid Bats, Patricia W. Freeman
University of Nebraska State Museum: Mammalogy Papers
The structure and mechanics of insectivores have been little studied. An effort is made here to compare and contrast jaw characteristics of insectivorous bats with those of herbivores and carnivores. Further, in one particular family of bats (Molossidae) jaw modifications are such that animals that take hard-shelled insect prey can be distinguished from those that take soft-shelled insect prey. Beetle-eaters generally have thick jaws, well-developed cranial crests, and fewer but bigger teeth, whereas moth-eaters have thin jaws, little crest build-up, and more but smaller teeth.
Swimming As A Determinate To Immigration For Two Small Mammals In Coastal Virginia, Jeffrey Lewis Carter
Swimming As A Determinate To Immigration For Two Small Mammals In Coastal Virginia, Jeffrey Lewis Carter
Biological Sciences Theses & Dissertations
Small mammals were live trapped on the mainland and on an island located in the southeast corner of Virginia. The area was characterized by a mid-Atlantic coastal climate. White-footed mice (Perompsous fsucopus) were trapped on the mainland but not on the island, whereas meadow voles (Microtus psnnsylvimious) inhabited only the island. A series of swimming tests were performed in both the field and in the laboratory on both of these species to determine if swimming abilities could be the factor preventing Pszomysous from colonizing the island.
Both species of small mammals showed good swimming endurance in …
Seasonal Feeding Habits Of The River Otter (Lutra Canadensis) In Ditches Of The Great Dismal Swamp, Ronnie M. Pierce
Seasonal Feeding Habits Of The River Otter (Lutra Canadensis) In Ditches Of The Great Dismal Swamp, Ronnie M. Pierce
Biological Sciences Theses & Dissertations
To determine the seasonal feeding habits of the river otter (Lutra canadensis) in the Great Dismal Swamp 209 scats were collected, from May 1977 to May 1978, and analyzed for content. Remains of crayfish were found with a frequency of occurrence of 82% while fish remains occurred in 62% of the scat. This is in direct contrast to previous studies (from other areas) which found fish with a greater frequency than crayfish. Fish consumption was believed to increase during periods of low water or low temperatures. Sunfish were represented most frequently and may be the preferred fish. Amphiuma remains …
Whole Issue Nebraska Bird Review (June 1979) 47(2)
Whole Issue Nebraska Bird Review (June 1979) 47(2)
Nebraska Bird Review
Table of Contents
1978 (Twenty-first) Fall Occurrence Report ........................................ 22
Addition to 1978 Spring Migration Report .......................................... 33
1978 Christmas Count........................................................... 33
Some Comments on "The Breeding Birds of Nebraska”............................. 38
A Second Nesting Record for Merlins in Nebraska .................................. 39
Great Black-backed Gull near Omaha............................................. 39
Isolation Of Mycoplasma From The Genital Tracts Of Elephants, Harold W. Clark, Daniel C. Laughlin, Jack S. Bailey, Thomas Mcp Brown
Isolation Of Mycoplasma From The Genital Tracts Of Elephants, Harold W. Clark, Daniel C. Laughlin, Jack S. Bailey, Thomas Mcp Brown
Elephant
The authors report finding arthritogenic agents, mycoplasmas, for the first time in a large group of captive elephants that are frequently crippled with rheumatism.
The Addo Elephant Research Project: A Brief Introduction, Anthony Hall-Martin
The Addo Elephant Research Project: A Brief Introduction, Anthony Hall-Martin
Elephant
Description of "an intensive research programme on the ecology, population dynamics, and behaviour" of elephants in the Addo Bush area of Cape Province, South Africa, launched in May 1976.
Iucn Elephant Survey And Conservation Programme: Summary Of Interim Report On Elephants In Kenya, Alison K. K. Hillman
Iucn Elephant Survey And Conservation Programme: Summary Of Interim Report On Elephants In Kenya, Alison K. K. Hillman
Elephant
Preliminary summary of evidence on the status and population trends of elephants in Kenya, condensed from the original.
Observations Of Elephants In East And Southern Africa, Jeheskel Shoshani
Observations Of Elephants In East And Southern Africa, Jeheskel Shoshani
Elephant
Selected short observations on African elephants (Loxodonta africana) made during 1978 in East and Southern Africa.
The Elephants Of Interview Island, Romulus Whitaker
The Elephants Of Interview Island, Romulus Whitaker
Elephant
Report from survey work on elephants living on the Andaman Islands in the Bay of Bengal, June, 1977.
Errata And Comments For Elephant Newsletter No. 2, Elephant Editors
Errata And Comments For Elephant Newsletter No. 2, Elephant Editors
Elephant
Errata and comments for Elephant Newsletter No. 2
Iucn/Wwf Help Wanted, Elephant Editors
Iucn/Wwf Help Wanted, Elephant Editors
Elephant
A published plea from the IUCN/World Wildlife Fund Conservation Programme in Indonesia asking for information regarding endangered elephants in Sumatra.
Elephant Symposium And Related Activities, Elephant Editors
Elephant Symposium And Related Activities, Elephant Editors
Elephant
Agenda for the upcoming Elephant Symposium at the American Society of Mammalogists 59th Annual Meeting, June 20th, 1979.
A Note From The Editor, Jeheskel Shoshani
A Note From The Editor, Jeheskel Shoshani
Elephant
Dr. Shoshani introduces the newsletter and documents increasing interest and support.
Front Matter, Elephant Editors
Information From The Elephant Interest Group Questionnaire, Elephant Editors
Information From The Elephant Interest Group Questionnaire, Elephant Editors
Elephant
Elephant-related activities of answering respondents to the newsletter's questionnaire.
Known Elephant Distribution In Africa: An Updated Map, Iain Douglas-Hamilton, Alison K.K. Hillman
Known Elephant Distribution In Africa: An Updated Map, Iain Douglas-Hamilton, Alison K.K. Hillman
Elephant
Map depicting the elephant distribution in Africa as of Spring 1979.
Observations In Tsavo National Park, Kenya, Evans E. Mgaah
Observations In Tsavo National Park, Kenya, Evans E. Mgaah
Elephant
Personal observations from four years as a game ranger in Tsavo National Park, Kenya.