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Articles 2461 - 2490 of 2491

Full-Text Articles in Animal Sciences

Harvest Mice (Genus Reithrodontomys) Of Nicaragua, J. Knox Jones Jr., Hugh H. Genoways Jul 1970

Harvest Mice (Genus Reithrodontomys) Of Nicaragua, J. Knox Jones Jr., Hugh H. Genoways

University of Nebraska State Museum: Mammalogy Papers

Harvest mice of the genus Reithrodontomys first were reported from Nicaragua by Oldfield Thomas (1907), who originally described Reithrodontomys sumichrasti modestus based on a single specimen from Jinotega. J. A. Allen (1908, 1910) recorded additional specimens of R. s. modestus, which still was the only species known from the country when A. H. Howell (1914) revised the genus Reithrodontomys. In his thorough review of Latin American harvest mice, Hooper (1952) added a second species, Reithrodontomys mexicanus lucifrons, to the Nicaraguan fauna, and Englert (1959) and Anderson and Jones (1960) recorded three additional kinds. The present report treats …


Some Ecological Relations Of Fairy Shrimps In Alkaline Habitats Of Nebraska, D. B. Mccarraher Jan 1970

Some Ecological Relations Of Fairy Shrimps In Alkaline Habitats Of Nebraska, D. B. Mccarraher

Nebraska Game and Parks Commission: Staff Research Publications

Ecological studies on the distribution of fairy shrimps have been made from 246 sites in the sandhills region of Nebraska. New records for Nebraska have been established for Artemia salina, Branchinecta campestris, B. lindahli, B. mackini and Cyzicus mexicanus. Seasonal populations of shrimp have been located in habitats containing permanent fish populations. Water mineralization was the dominant environmental condition related to the distribution of phyllopods with sodium and potassium compounds predominating in the strongly alkaline lakes. Several of the Artemia lakes were classified as hydroxide sites. Many of the alkaline ponds, where B. lindahli and B. campestris flourish, are …


Chiropteran Systematics, J. Knox Jones Jr., Hugh H. Genoways Jan 1970

Chiropteran Systematics, J. Knox Jones Jr., Hugh H. Genoways

University of Nebraska State Museum: Mammalogy Papers

Provides an overview of the field of chiropteran systematics in a way that will introduce the non-chiropterologist to the subject. By way of example, we have alluded to several aspects of taxonomic research at different levels in the hierarchy. Recourse to the publications cited at the appropriate places in the text will amplify our remarks and provide a solid background in the current work of the discipline.

Basically, taxonomic characters are where the taxonomist finds them; some, but not all, will prove useful also in elucidating relationships and evolutionary descent of taxa. Much remains to be done in these areas, …


Phlyctainophora Squali Sp. Nov. (Nematoda, Philometridae) From The Spiny Dogfish, Squalis Acanthias, Dwight R. Mudry, Murray D. Dailey Jul 1969

Phlyctainophora Squali Sp. Nov. (Nematoda, Philometridae) From The Spiny Dogfish, Squalis Acanthias, Dwight R. Mudry, Murray D. Dailey

Harold W. Manter Laboratory: Library Materials

Summary

Phlyctainophora squali sp. nov. is described from 23 female specimens recovered from the subcutaneous tissue of one of 440 Squalis acanthias caught off Los Angeles, California. This finding represents a new host and distribution for this genus. Phlyctainophora is placed in the family Philometridae on the basis of atrophication of vulva and anus, simple mouth, viviparity and location in tissue of fishes. The family diagnosis for Philometridae is amended to include Phlyctainophora which lacks an anterior ovary.


Introduction Of The Red-Browed Finch To Western Australia, John L. Long Jan 1969

Introduction Of The Red-Browed Finch To Western Australia, John L. Long

Journal of the Department of Agriculture, Western Australia, Series 4

THE Red-browed Finch (Estrilda temporalis) has been established probably since 1958 in orchard clearings in Darling Range gullies east of Perth.

Although some concern has been shown at the introduction of a new species to Western Australia, it appears to be of little economic importance.


Notes On Spotted Skunks (Genus Spilogale) From Western Mexico, Hugh H. Genoways, J. Knox Jones Jr. Jan 1968

Notes On Spotted Skunks (Genus Spilogale) From Western Mexico, Hugh H. Genoways, J. Knox Jones Jr.

University of Nebraska State Museum: Mammalogy Papers

Specimens of spotted skunks acquired from western Mexico by the Museum of Natural History at the University of Kansas in the past two decades add substantially to the knowledge of the species occurring in that region. Two specimens of the rare Spilogale pygmaea (one from Sinaloa and one from Oaxaca) are reported for the first time. Two subspecies of pygmy spotted skunk are recognized - S. p. pygmaea Thomas with type locality at Rosario, Sinaloa, and S. p. australis Hall with type locality at Acapulco, Guerrero.

The large spotted skunk, Spilogalepusorius, varies clinally in size form north (larger) to …


A New Species Of Shrew (Genus Cryptotis) From Jalisco, Mexico (Mammalia: Insectivora), Hugh H. Genoways, Jerry R. Choate Dec 1967

A New Species Of Shrew (Genus Cryptotis) From Jalisco, Mexico (Mammalia: Insectivora), Hugh H. Genoways, Jerry R. Choate

University of Nebraska State Museum: Mammalogy Papers

From July 6 to 11, 1966, vertebrates were collected on Volcan de Fuego, Jalisco, for the Museum of Natural History,the University of Kansas, by Hugh H. Genoways and Percy L. Clifton. On July 10, a shrew of the genus Cryptotis was obtained on a steep slope across the valley to the north of the active cone of the volcano. The specimen was caught in a steel trap placed in the tunnel of a pocket gopher; because the opening had not been covered after the trap was set, it could not be determined whether the shrew was using the tunnel as …


A New Subspecies Of The Fringe-Tailed Bat, Myotis Thysanodes, From The Black Hills Of South Dakota And Wyoming, J. Knox Jones Jr., Hugh H. Genoways May 1967

A New Subspecies Of The Fringe-Tailed Bat, Myotis Thysanodes, From The Black Hills Of South Dakota And Wyoming, J. Knox Jones Jr., Hugh H. Genoways

University of Nebraska State Museum: Mammalogy Papers

A new subspecies of Myotis thysanodes, possibly representing a disjunct population, is described from the Black Hills of South Dakota and Wyoming. The new race is compared with M. t. thysanodes and also with Myotis evotis evotis, which it superficially resembles.


Factors Affecting Nesting Success Of The Canvasback In The Aspen Parklands, Jerome H. Stoudt Dec 1965

Factors Affecting Nesting Success Of The Canvasback In The Aspen Parklands, Jerome H. Stoudt

USGS Northern Prairie Wildlife Research Center

The Minnedosa study area is located in the southwestern portion of Manitoba just south of the town of Minnedosa. It is 90 square miles in size and roughly square in shape. The Aspen Parkland, in which the study area is located, is characterized by gently rolling terrain and black soils. Mixed farming is the rule with emphasis on small grain production consisting of wheat, barley, and oats. Roughly 50 percent of the water areas in the parkland are ringed with aspen, Populus tremuloides, and large blocks of aspen are interspersed throughout the area. The Minnedosa area differs because of …


The Coccidian Parasites (Protozoa, Sporozoa) Of Rodents, Norman D. Levine, Virginia Ivens Sep 1965

The Coccidian Parasites (Protozoa, Sporozoa) Of Rodents, Norman D. Levine, Virginia Ivens

Harold W. Manter Laboratory: Library Materials

This monograph summarizes the known information on taxonomy, morphology, life cycle, hosts, location in the host, pathogenicity, geographic distribution, and cross-transmission studies of the 196 named species of coccidia of rodents. These include 176 species of Eimeria, 9 of Isospora, 3 of Wenyonella, 2 each of Cryptosporidium and Klossiella, and 1 each of Dorisiella, Caryospora, Tyzzeria, and Klossia. In addition, similar data are given for those forms for which insufficient information is available to justify assigning them names.

Eimeria, which is the most common genus, has been described from only 15% …


Review Of Echinococcus Species In South Africa, Anna Johanna Maria Verster Jan 1965

Review Of Echinococcus Species In South Africa, Anna Johanna Maria Verster

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

1. The nominate subspecies of E. granulosus (Batsch, 1786) is redesignated from the type locality, Europe.

2. Five subspecies of E. granulosus are described from South African carnivores: E. g. granulosus, E. g. africanus, E. g. felidis, E. g. lycaontis and E. g. ortleppi.

3. E. g. granulosus has so far only been recovered from the Transvaal; E. g. ortleppi appears to be restricted to the Transvaal; E. g. africanus occurs in the Orange Free State and the Transvaal; E. g. lycaontis and E. g. felidis like their definitive hosts are restricted to the Transvaal.

4. …


Distribution And Taxonomy Of Mammals Of Nebraska, J. Knox Jones Jr Jan 1964

Distribution And Taxonomy Of Mammals Of Nebraska, J. Knox Jones Jr

Nebraskiana Publications

Contents

Introduction

Environment

Climate

Soils

Geology and Physiography

Vegetation

Effects of Man on The Envmonment

Factors Influencing Distribution And Speciation

Wisconsin Glaciation And Post-Wisconsin Climates

Emigration of Recent Mammals To Nebraska

Some Effects of The Environment

The Missouri River as a Barrier to Dispersal

Geographic Varlatlon and Speciation

Mammalian Distributional Areas

Summary

Treatment and Acknowledgments

Checklist (with page references) of Mammals of Nebraska

Accounts of Species

Introduced Mammals

Species of Unverified occurrence

Type Localities

Literature Cited

● Order MARSUPIALIA-Marsupials ● ● Family DIDELPHIDAE-Opossums ● Didelphis marsupialis virginiana Kerr (Opossum) ● Order INSECTIVORA-Insectivores ● Family SORICIDAE-Shrews ● Sorex cinereus haydeni Baird …


Malaysian Parasites Xxxv-Xlix, W. W. Macdonald Jan 1960

Malaysian Parasites Xxxv-Xlix, W. W. Macdonald

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

This is the third Study of the series from this Institute on the external and internal parasites and the biting insects of the Malaysian region. The earlier two volumes were planned and edited by Dr. J.R. Audy, and on his departure from Malaya in the middle of 1959 Mr. W. W. Macdonald continued the work which had been begun and collated and edited the papers in this present Study.

In the two previous volumes (Study No. 26, 1954 and No. 28, 1957) the emphasis was on the taxonomy of Trombiculid mites. In the present volume the emphasis has changed, and …


Notes On Scottsbluff, Nebraska, Tornadoes, 27 June 1955, Robert G. Beebe Mar 1959

Notes On Scottsbluff, Nebraska, Tornadoes, 27 June 1955, Robert G. Beebe

NOAA Technical Reports and Related Materials

Some general characteristics of thirteen tornadoes that occurred on the afternoon of June 27, 1955 in Scottsbluff County, Nebraska, are related. Two of these caused widespread attention due to their size and their proximity to the cities of Scottsbluff and Mitchell, Nebraska. These two were photographed extensively by residents near their paths. The experience of two men directly beneath one of the two large tornadoes is related.


Field Techniques For Sexing And Aging Game Animals, Donald R. Thompson Jan 1958

Field Techniques For Sexing And Aging Game Animals, Donald R. Thompson

Nebraska Game and Parks Commission: Publications

The purpose of this booklet is to provide a ready field reference for identification, sexing and aging of common game species. It has purposely been kept in simplified form, presenting only those techniques which can commonly be applied in the field and avoiding those which would require special equipment and skills. Untrained personnel should be given demonstrations of the techniques, and thereafter this reference should serve as a reminder. It is not expected that the reference could successfully be used without such demonstration. Certain of the techniques such as cloaca! examination of waterfowl may require considerable practice by the individual. …


Nebraska Deer, William Bailey Jr., George Schildman, Phillip Agee, C. G. Pritchard Jan 1957

Nebraska Deer, William Bailey Jr., George Schildman, Phillip Agee, C. G. Pritchard

Nebraska Game and Parks Commission: Publications

IN COMMON with the experience of most states, Nebraska's deer herds were reduced to a very low level by excessive harvests in our early history. Most American big-game animals were overharvested in the early history of this nation because of commercialization. Buffalo were killed for their hides, deer for their meat. This slaughter continued as long as the hunter (or poacher) could sell his take at a profit. Modem game management and public opinion reversed this trend. Deer are on the way back all over America, and in some states the protection-complex was so strong that deer were restored to …


Nebraska Deer, William Bailey Jr., George Schildman, Phillip Agee, C. G. Pritchard Jan 1957

Nebraska Deer, William Bailey Jr., George Schildman, Phillip Agee, C. G. Pritchard

Nebraska Game and Parks Commission: Publications

IN COMMON with the experience of most states, Nebraska's deer herds were reduced to a very low level by excessive harvests in our early history. Most American big-game animals were overharvested in the early history of this nation because of commercialization. Buffalo were killed for their hides, deer for their meat. This slaughter continued as long as the hunter (or poacher) could sell his take at a profit. Modem game management and public opinion reversed this trend. Deer are on the way back all over America, and in some states the protection-complex was so strong that deer were restored to …


Key To The Genus Ornithodorus (Of Russia) (After Pavlovsky, 1955), I. G. Galuzo Dec 1956

Key To The Genus Ornithodorus (Of Russia) (After Pavlovsky, 1955), I. G. Galuzo

United States Naval Medical Research Unit 3: Publications

English translation from Russian of pp. 83-85 of Galuzo (1957) Argasid ticks and their epizootological significance. Alma-Ata (Acad. Sci. Kazakh SSR).

Females and Males

Ornithodoros papillipes (Birula, 1895)

O. verrucosus (Sas, Fen. 1934)

O. tartakovskyi (Olenev, 1931)

O. nereensis (Pavlovsky, 1941)

O. alactagalis (Issaakjan, 1936)

O. canestrini (Birula, 1895)

O. lahorensis (Neumann, 1908)


(Summary) Of Variation In Pasture Ticks (Acarina, Ixodidae) And Its Significance For Systematics, G. S. Pervomaisky Jan 1954

(Summary) Of Variation In Pasture Ticks (Acarina, Ixodidae) And Its Significance For Systematics, G. S. Pervomaisky

United States Naval Medical Research Unit 3: Publications

First paragraph:

1) Pasture ticks (Ixodidae) have a great significance as specific vectors and stimulators of many infectious diseases of man and cattle.


Experiments In Transmission Of Theileriasis And Anaplasmosis Of Sheep Through Ticks Ornithodoros Lahorensis And Haemaphysalis Sulcata, P. A. Bitukov Jan 1953

Experiments In Transmission Of Theileriasis And Anaplasmosis Of Sheep Through Ticks Ornithodoros Lahorensis And Haemaphysalis Sulcata, P. A. Bitukov

United States Naval Medical Research Unit 3: Publications

First paragraph:

In conducting inspection of sheep on haemosporidiosis in some districts of South-Kazakhstankoi region, we repeatedly observed theileriasis and anaplasmosis of sheep.

Note: Numerous other experimental data in this paper are omitted from the present translation. This report is of special interest because it establishes the role of an argasid tick as a vector of blood protozoa. Translation made and distributed by Medical Zoology Department, U. S. Naval Medical Research Unit no. 3, Cairo, Egypt.


Fish And Shellfish Of The Middle Atlantic Coast, Rachel Carson Jun 1945

Fish And Shellfish Of The Middle Atlantic Coast, Rachel Carson

United States Fish and Wildlife: Staff Publications

Contents: Economics • Fishing gear • Fishing grounds • Conservation • Oysters (Ostrea virginica) • Blue crab (Callinectes sapidus) • Croaker (Micropogon undulatus) • Porgy (Stenotomus chrysops) • Striped bass (Roccus saxatilis) • Weakfish (Cynoscion regalis) • Summer flounder (Paralichthys dentatus) • Shad (Alosa sapidissima) • Butterfish (Poronotus triacanthus) • Spot (Leiostomus xanthurus) • Mackerel (Scomber scombrus) • Menhaden (Brevoortia spp) • River herring (Pornolobus spp) • Sea bass (Centropristes striatus) • …


Fish And Shellfish Of The South Atlantic And Gulf Coasts, Rachel L. Carson Oct 1944

Fish And Shellfish Of The South Atlantic And Gulf Coasts, Rachel L. Carson

United States Fish and Wildlife: Staff Publications

Contents
Introduction
The fisheries
The fishing grounds: The South Atlantic coast • The Gulf coast
Boats, men, and fishing gear
Marketing the catch
Biographies of the fish and shellfish of the region: Mullet • Spanish mackerel • Kingfish • Bluefish • Red snapper • Groupers • Sea trouts • Redfish • Black drum • Shrimp • The oyster • The blue crab • Other fish and shellfish • Menhaden • Shad • Pompano • Snook • Grunts • Sheepshead • Blue runner • Crevalle • Flounders • Sharks • Spiny lobster • Hard-shell clam • Bay scallop
Appendix
The nutritive …


The Relations Of Vegetative Composition And Cattle Grazing On Nebraska Range Land, T. E. Brinegar, F. D. Keim Mar 1942

The Relations Of Vegetative Composition And Cattle Grazing On Nebraska Range Land, T. E. Brinegar, F. D. Keim

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

The objectives of the studies reported in this paper were: (1) to obtain an analysis of the vegetation in tall and short grass range lands, (2) to observe the activities of cattle on the range, and (3) to determine the effects of grazing upon vegetation.


A Study Of Subspecific Variation In The Richardson Pocket-Gopher (Thomomys Talpoides) In Nebraska, With Descriptions Of Two New Subspecies, Myron H. Swenk Mar 1941

A Study Of Subspecific Variation In The Richardson Pocket-Gopher (Thomomys Talpoides) In Nebraska, With Descriptions Of Two New Subspecies, Myron H. Swenk

University of Nebraska State Museum: Mammalogy Papers

There has been little published evidence of the occurrence of pocket gophers of the genus Thomomys in Nebraska.

Thomomys talpoides pierreicolus subsp. nov

Pierre Richardson Pocket-Gopher

Thomomys talpoides cheyennensis subsp. nov.

Cheyenne Richardson Pocket-Gopher


A Study Of The Geographical And Ecological Distribution Of The Buffy Plains Pocket Mouse (Perognathus Flavescens Flavescens), With Description Of A New Subspecies From Nebraska, Myron H. Swenk Jun 1940

A Study Of The Geographical And Ecological Distribution Of The Buffy Plains Pocket Mouse (Perognathus Flavescens Flavescens), With Description Of A New Subspecies From Nebraska, Myron H. Swenk

University of Nebraska State Museum: Mammalogy Papers

The Buffy Plains Pocket-mouse (Perognathus flavescens flavescens) is a typical mammal of the Sandhill Region of Nebraska. Its home, like that of other species of pocket-mice, is a series of burrows in the ground, consisting of several entrance holes leading to the main 'burrow, in which is located the nest and the food storage chambers. In the Nebraska sandhills its burrows and nests are commonly placed beneath clumps of Spanish Bayonet or Prickly Pear Cactus, and the entrance holes usually are so distributed as to open from under the plant in all directions.

The writer had hoped to …


Vegetative Composition And Grazing Capacity Of A Typical Area Of Nebraska Sandhill Range Land, A. L. Frolik, W. O. Shepherd Mar 1940

Vegetative Composition And Grazing Capacity Of A Typical Area Of Nebraska Sandhill Range Land, A. L. Frolik, W. O. Shepherd

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

The sandhill area of Nebraska occupies approximately 20,000 square miles of the central portion of the state. Being unadapted to cultivation, the land is for the most part still covered with native vegetation. It is utilized primarily for the production of livestock, chiefly cattle. During the period 1931 to 1938 the sandhills carried annually an average of 1,041,000 cattle, which amounted to 31 per cent of the total number in the state. The management practices used in the Nebraska sandhills have gained national recognition as a good example of range conservation in the United States. The purpose of this study …


A Study Of Subspecific Variation In The Yellow Pocket-Gopher (Geomys Lutescens) In Nebraska, And Of The Geographical And Ecological Distribution Of The Variants, Myron H. Swenk Feb 1940

A Study Of Subspecific Variation In The Yellow Pocket-Gopher (Geomys Lutescens) In Nebraska, And Of The Geographical And Ecological Distribution Of The Variants, Myron H. Swenk

University of Nebraska State Museum: Mammalogy Papers

The Yellow Pocket-Gopher (Geomys lutescens) was described by Merriam (14) in 1890, as a paler and smaller subspecies of Geomys bursarius, based on "numerous specimens received from the Sand Hills of western Nebraska", and especially upon an adult Cjl type specimen (No. 23595, U. S. N. M.) collected in the sandhills along Birdwood Creek, Lincoln County, Nebraska, May 27, 1889, by A. B. Baker. Although even as late as 1931 Scheffer (17) classified Geomys lutescens as a subspecies of G. bursarius, it is without doubt specifically distinct from G. bursarius. In all of its variations …


A Study Of Local Size Variations In The Prairie Pocket-Gopher (Geomys Bursarius), With Description Of A New Subspecies From Nebraska, Myron H. Swenk Dec 1939

A Study Of Local Size Variations In The Prairie Pocket-Gopher (Geomys Bursarius), With Description Of A New Subspecies From Nebraska, Myron H. Swenk

University of Nebraska State Museum: Mammalogy Papers

Beginning in the fall of 1913, the writer has continuously been interested in accumulating accurate body measurements, taken in the flesh, of Nebraska pocket-gophers. As a result quite an assemblage of such data has been secured. In the case of Geomys bursarius, the bulk of these data relates to specimens trapped in the vicinity of Lincoln, Lancaster County, involving to date 48 adult and 38 immature males and 50 adult and 65 immature females. Recently these measurements have been tabulated and compared with such measurements of the species as have been recorded in the literature from other parts of …


Mammals Of Maine, Ralph S. Palmer Jan 1937

Mammals Of Maine, Ralph S. Palmer

Honors College

The present paper was undertaken in order that the compiler might gain a slight knowledge of Maine mammals and the literature pertaining to this branch of zoology. It was undertaken as a "major honors" course at the University of Maine for the school year of 1936-1937. It is possible that a perusal of this paper will reveal to others the striking scarcity of information on many of our mammalian forms. All the endemic forms known to have occurred in Maine within historic times are listed. Some of these forms are extirpated at the present time. Introduced species are not treated.


The Tapeworms Of The Rhinoceroses, A Study Based On Material From The Belgian Congo, Horace W. Stunkard Jan 1926

The Tapeworms Of The Rhinoceroses, A Study Based On Material From The Belgian Congo, Horace W. Stunkard

Harold W. Manter Laboratory: Library Materials

During the course of my study on the parasitic worms collected by the Lang-Chapin expedition of the American Museum to the Belgian Congo, I have had the good fortune to examine abundant material of Plagiotaenia gigantea (Peters). This interesting species, the first reported from the rhinoceros, has been confused with other cestodes from rhinoceros hosts, has been assigned to no less than three different genera in addition to the genus Taenia, to which it was originally referred, and has been the source of much discussion and difference of opinion during the past seventy years. A review of the literature …