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Articles 1081 - 1110 of 1158

Full-Text Articles in Population Biology

Observaciones Sobre La Biología De Phyllomedusa Iheringi Boulenger, 1885, (Anura, Hylidae), Rafael O. De Sá, Annelise Gerhau Jan 1983

Observaciones Sobre La Biología De Phyllomedusa Iheringi Boulenger, 1885, (Anura, Hylidae), Rafael O. De Sá, Annelise Gerhau

Biology Faculty Publications

RESUMEN:

Se presentan las características que permiten diferenciar las larvas de Phyllomedusa iheringi de las de otros anuros que habitan en nuestro territorio, junto con algunas observaciones sobre la biología de esta especie poco conocida en el Uruguay.

SUMMARY:

The characteristics that differentiate the larvae of Phyllomedusa iheringi from other anurans that live in Uruguay are presented here. Some observations on the biology of this species are also recorded.


Mice Of The Genus Peromyscus In Guadalupe Mountains National Park, Texas, John E. Cornely, David J. Schmidly, Hugh H. Genoways, Robert J. Baker Oct 1981

Mice Of The Genus Peromyscus In Guadalupe Mountains National Park, Texas, John E. Cornely, David J. Schmidly, Hugh H. Genoways, Robert J. Baker

University of Nebraska State Museum: Mammalogy Papers

Mice of the genus Peromyscus are found in virtually every habitat type in Guadalupe Mountains National Park in West Texas. Because of their abundance and wide distribution, they comprise an important component of the park's ecosystem. The first known specimens of Peromyscus from the area now included in the park were collected by Vernon Bailey in 1901 (Bailey, 1905). He collected specimens of Peromyscus boyIii in Dog and McKittrick canyons. Davis (1940) collected P. leucopus at Frijole in 1938 and P. boylii in The Bowl in 1938 and 1939. Davis and Robertson (1944) reported collecting P. pectoralis from along Bell …


An Evaluation Of Small Rodent Populations In Four Dismal Swamp Plant Communities, Fiona Elizabeth Breidling Oct 1980

An Evaluation Of Small Rodent Populations In Four Dismal Swamp Plant Communities, Fiona Elizabeth Breidling

Biological Sciences Theses & Dissertations

Diversity and density of small rodents in the Dismal Swamp are believed to be low. Reasons for this may be excessive predation, heavy interspecific pressure from larger rodents, lack of suitable habitat, low food availability or flooding.

Rodent populations were evaluated using live-traps and pitfall traps in four different Dismal Swamp plant communities. Habitat was compared on the basis of phytomass studies previously reported. Flood levels were recorded during live-trapping sessions. Mast from trees was collected in modified mast collectors, and fed to Peromyscus leucopus in the laboratory. Mast was analyzed for caloric value and nutrient content.

Only two …


Demographic And Reproductive Parameters Of The Yellow-Cheeked Pocket Gopher (Pappogeomys Castanops), Michael J. Smolen, Hugh H. Genoways, Robert J. Baker May 1980

Demographic And Reproductive Parameters Of The Yellow-Cheeked Pocket Gopher (Pappogeomys Castanops), Michael J. Smolen, Hugh H. Genoways, Robert J. Baker

University of Nebraska State Museum: Mammalogy Papers

A population of Pappogeomys castanops simulans was live-trapped on a 3.5-ha study area in Lubbock, Texas, from September 1971 to September 1973. Seasonal and annual differences in population size were observed, with the population fluctuating between 20 and 25 gophers. Female reproductive activity began in January and continued until October, with an obvious period of recruitment lacking; however, a peak was observed in March and April. Females produced as many as three litters per reproductive season. Females born early in the year were sexually mature within the reproductive season of their birth. Females had an average survival rate of 56 …


Nebraska Trapping, George Schildman, Frank Andelt, Jim Brunner Jan 1980

Nebraska Trapping, George Schildman, Frank Andelt, Jim Brunner

Nebraska Game and Parks Commission: Publications

Fur bearers and trapping played an important role in the exploration and development of Nebraska. The harvest of our fur-bearer resource is part of every Nebraskan's heritage. Wise use of the resource and consideration for other people's property and personal rights can insure that trapping will remain a part of the heritage of future generations. The purpose of this publication is to help insure this heritage ... through the educational process. Knowledge of and respect for the resource, as well as consideration for other people, are the keys to perpetuating trapping as an outdoor activity. While primarily designed to assist …


Variation In Pappogeomys Castanops (Geomyidae) On The Llano Estacado Of Texas And New Mexico, Robert C. Dowler, Hugh H. Genoways Dec 1979

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.


Records Of Bats (Mammalia: Chiroptera) From Suriname, Hugh H. Genoways, Stephen L. Williams Sep 1979

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.


Front Matter, Elephant Editors May 1979

Front Matter, Elephant Editors

Elephant

Table of Contents and Cover credits


Observations In Tsavo National Park, Kenya, Evans E. Mgaah May 1979

Observations In Tsavo National Park, Kenya, Evans E. Mgaah

Elephant

Personal observations from four years as a game ranger in Tsavo National Park, Kenya.


Captive Elephant Population Of North America: 1979 Update, Elephant Editors May 1979

Captive Elephant Population Of North America: 1979 Update, Elephant Editors

Elephant

Survey of elephants in captivity, 1979.


Observations Of Elephants In East And Southern Africa, Jeheskel Shoshani May 1979

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.


Iucn/Wwf Help Wanted, Elephant Editors May 1979

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 May 1979

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.


Information From The Elephant Interest Group Questionnaire, Elephant Editors May 1979

Information From The Elephant Interest Group Questionnaire, Elephant Editors

Elephant

Elephant-related activities of answering respondents to the newsletter's questionnaire.


Report On The Elephants Of Tongaland, Clive Walker May 1979

Report On The Elephants Of Tongaland, Clive Walker

Elephant

Report from a preliminary survey of elephants in Southern Africa by the Endangered Wildlife Trust Elephant Group.


Financial Report And Acknowledgments, Elephant Editors May 1979

Financial Report And Acknowledgments, Elephant Editors

Elephant

Accounting of the Elephant Interest Group for production of the journal.


Bibliography, Elephant Editors May 1979

Bibliography, Elephant Editors

Elephant

Updates to the selected bibliography covering references from 1970 - mid-1979.


Isolation Of Mycoplasma From The Genital Tracts Of Elephants, Harold W. Clark, Daniel C. Laughlin, Jack S. Bailey, Thomas Mcp Brown May 1979

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.


Iucn Elephant Survey And Conservation Programme: Summary Of Interim Report On Elephants In Kenya, Alison K. K. Hillman May 1979

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.


Klaserie Elephant Project: Progress Report, Clive Walker May 1979

Klaserie Elephant Project: Progress Report, Clive Walker

Elephant

Report from an aerial survey of elephant population in the Klaserie Private Nature Reserve in South Africa.


The Elephants Of Interview Island, Romulus Whitaker May 1979

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.


Known Elephant Distribution In Africa: An Updated Map, Iain Douglas-Hamilton, Alison K.K. Hillman May 1979

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.


Suggested Mechanical Model Of Elephant Trunk Muscle Tissue And Its Sheer Conjecture, Norris Whitehall May 1979

Suggested Mechanical Model Of Elephant Trunk Muscle Tissue And Its Sheer Conjecture, Norris Whitehall

Elephant

A detailed simile modeling elephant trunk muscle tissue.


The Addo Elephant Research Project: A Brief Introduction, Anthony Hall-Martin May 1979

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.


Ivory And Ivorine, Elephant Editors May 1979

Ivory And Ivorine, Elephant Editors

Elephant

Items from news and other reports relating to ivory and ivorine.


Iucn/Wwf Elephant Survey And Conservation Programme Questionnaire, Elephant Editors May 1979

Iucn/Wwf Elephant Survey And Conservation Programme Questionnaire, Elephant Editors

Elephant

A survey soliciting data from captive elephants.


Elephant Interest Group Questionnaire, Elephant Editors May 1979

Elephant Interest Group Questionnaire, Elephant Editors

Elephant

Form for consideration for the Elephant Interest Group.


A Note From The Editor, Jeheskel Shoshani May 1979

A Note From The Editor, Jeheskel Shoshani

Elephant

Dr. Shoshani introduces the newsletter and documents increasing interest and support.


Elephants In The News, Elephant Editors May 1979

Elephants In The News, Elephant Editors

Elephant

"Motty"-- Birth of an African/Asian elephant at Chester Zoo; Elephants at the Washington Park Zoo, Portland, Oregon, USA; Elephants at the Knoxville Zoo, Knoxville, Tennessee, USA; "Dima"--26,000-year-old baby mammoth tissues are being studied at the University of California and Wayne State University, USA


Recent Correspondence, Elephant Editors May 1979

Recent Correspondence, Elephant Editors

Elephant

Letters from Pieter deVilliers, Richard Lair, and Norris Whitehill