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Articles 9811 - 9840 of 10517
Full-Text Articles in Zoology
End Matter, Vol. 16 No. 4
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
New World Polyctenidae (Hemiptera), With Special Reference To Venezuelan Species, Norihiro Ueshima
New World Polyctenidae (Hemiptera), With Special Reference To Venezuelan Species, Norihiro Ueshima
Brigham Young University Science Bulletin, Biological Series
There are seven species of the polyctenid genus Hesperoctenes which occur in Venezuela. Six of these species are reported in this paper. H. longiceps (Waterhouse) is redescribed. Data on distribution and hosts and a key to the 15 species of the genus Hesperoctenes are given.
End Matter, Vol. 17 No. 4
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
End Matter, Vol. 17 No. 5
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Ticks Of Venezuela (Acarina: Ixodoidea) With A Key To The Species Of Amblyomma In The Western Hemisphere, Eleanor K. Jones, Carleton M. Clifford, James E. Keirans, Glen M. Kohls
Ticks Of Venezuela (Acarina: Ixodoidea) With A Key To The Species Of Amblyomma In The Western Hemisphere, Eleanor K. Jones, Carleton M. Clifford, James E. Keirans, Glen M. Kohls
Brigham Young University Science Bulletin, Biological Series
Forty-nine species in 2 families and 10 genera are recorded for Venezuela. A key to the species of Amblyomma in the Western Hemisphere is given. Host and locality records are provided for each species. No new species are reported but the following 17 species are new for the fauna of Venezuela: Autricola silvai Cerný, 1967, Ornithodoros boliviensisO. brodyi Matheson, 1935, O. puertoricensis Fox, 1947, O. rossi Kohls, Sonenshine and Clifford, 1965, O. stageri Cooley and Kohls, 1941, O. yumatensis Cooley and Kohls, 1941, O. marinkellei Kohls and Clifford, 1969, O. viguerasi Cooley and Kohls, 1941, Amhblyomma extraoculatum Neumann, 1899, A. …
End Matter, Vol. 17 No. 6
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Venezuelan Nycteribiid Batflies (Diptera: Nycteribiidae), Lindolpho R. Guimarães
Venezuelan Nycteribiid Batflies (Diptera: Nycteribiidae), Lindolpho R. Guimarães
Brigham Young University Science Bulletin, Biological Series
Eleven species of Nycteribiidae, all belonging to the genus Basilia, are reported from Venezuela. Of these, two (tuttlei and typhlops) are described as new and four (anomala, dubia, juquiensis, and tiptoni) are recorded for the first time. B. anomala is the first species with three tergal plates to be found in South America. Synonymies, previous localities, and host records are given for all species, as well as new records and comments. Geographical distribution and host-parasite associations are discussed. Field parties of the Smithsonian Venezuelan Project obtained the material on which this paper is based.
Whole Issue Nebraska Bird Review (September 1972) 40(3)
Whole Issue Nebraska Bird Review (September 1972) 40(3)
Nebraska Bird Review
TABLE OF CONTENTS
Traill's Flycatcher Breeding Biology ..................50
Front Matter, Vol. 17 No. 5
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Front Matter, Vol. 16 No. 4
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
The Boraginaceae Of Utah, Larry C. Higgins
The Boraginaceae Of Utah, Larry C. Higgins
Brigham Young University Science Bulletin, Biological Series
This paper presents a revision of the family Boraginaceae for the state of Utah. Ninety-three species in seventeen genera are recognized. The treatment includes keys, synonymy, descriptions, and citations of representative specimens found in the various herbaria in the state of Utah. The new combination Lappula occidentalis (Wats.) Greene var. cupulata (Gray) Higgins is presented.
End Matter, Vol. 16 No. 3
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Front Matter, Vol. 16 No. 3
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Whole Issue Nebraska Bird Review (June 1972) 40(2)
Whole Issue Nebraska Bird Review (June 1972) 40(2)
Nebraska Bird Review
TABLE OF CONTENTS
Immature Peregrine Falcon in Garden County ............................ 26
The Seventy-first Annual Meeting .............................................. 27
1971 (Fourteenth Fall Occurrence Report ....................................... 28
Book Review ................................................................ 41
A Preliminary Study of a Pair of Great Horned! Owls at Hay Springs, Nebraska .................................. 42
Prairie Falcon in Lancaster County ........................................ 44
Notes ............................................... 45
End Matter, Vol. 16 No. 1
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Front Matter, Vol. 16 No. 1
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
The Hyobranchium And Throat Myology Of The Adult Ambystomidae Of The United States And Northern Mexico, John E. Krogh, Wilmer W. Tanner
The Hyobranchium And Throat Myology Of The Adult Ambystomidae Of The United States And Northern Mexico, John E. Krogh, Wilmer W. Tanner
Brigham Young University Science Bulletin, Biological Series
The 16 species and subspecies of the Ambystomidae of the United States are placed into six groups according to their throat morphology as follows: The Dicamptodon group, the Rhyacotriton group, the A. Annulatum–A. cingulatum group, the A. gracile-A. jeffersonianum-A. mabeei-A. macrodactylum-A. maculatum group, the A. talpoideum group, the A. opacum-A. texanum group, and the A. rosaceum-A. t. tigrinum-A. t. melanostictum-A. t. nebulosum group. Dicamptodon appears to be the most primitive group and Rhyacotriton the most specialized. Based on the morphology of the throat region it is suggested that A. rosaceum be placed in the tiger salamander group as a subspecies …
The Effects Of Age And Induction On Cockroach Mixed Function Oxidase Activity And Cell Morphology, Richard L. Turnquist
The Effects Of Age And Induction On Cockroach Mixed Function Oxidase Activity And Cell Morphology, Richard L. Turnquist
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Female American cockroaches showed definite age-dependent changes in levels of activity of the microsomal mixed function oxidase chain. Cytochrome P-450 levels, EPN-detoxication, and p-nitroanisole O-demethylation activities were very low in young adult insects but increased steadily reaching a peak at about 100 days in fat body and at about 90 days in midgut and hindgut. The activities then declined rapidly reaching levels of young insects at about 130 to 140 days of age. NADPH-NT-reductase activity was high in young insects and declined during the first few weeks of adult life. This activity too showed a peak at about …
Ecology Of Aroga Websteri Clarke In Curlew Valley, Utah-Idaho, Reed L. Kirkland
Ecology Of Aroga Websteri Clarke In Curlew Valley, Utah-Idaho, Reed L. Kirkland
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The ecology, life history, and population dynamics of the sagebrush defoliator, Aroga websteri Clarke, were studied in the field and laboratory. The defoliator has one generation a year at the Curlew Valley site. It overwintered in the egg stage and passed through five larval instars. Ten parasite species attacked the defoliator at the study site. Four species, Orgilus ferus, Phaeogenes sp., Spilochalcis leptis, and Apanteles cacoeciae, contributed over 75 percent of the total incidence of parasitism. Parasitism ranged from 20 to 76 percent in 1971, but only ranged from 6 to 29 percent in 1972. This decrease …
Front Matter, Vol. 16 No. 2
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Understory Characteristics Related To Site Quality For Aspen In Utah, James H. Warner, Kimball T. Harper
Understory Characteristics Related To Site Quality For Aspen In Utah, James H. Warner, Kimball T. Harper
Brigham Young University Science Bulletin, Biological Series
An analysis has been made of the basic ecology of aspen forests of the mountainous areas of Utah and northern Arizona. Forty-nine study areas have been examined in respect to density, height and age of the tree cover, tree reproduction, and composition and biomass production of the understory. A graphic model of interspecific assocations among prevalent understory species has been prepared by a cluster-analysis procedure based on presence and absence of species in 1,225 small quadrats (0.25 m2) uniformly distributed among the 49 stands. The model separates species of relatively stable as opposed to rapidly seral aspen forests. …
End Matter, Vol. 16 No. 2
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
The Phyllostomatid Bat, Vampyressa Brocki, In Colombia, Robert J. Baker, Hugh H. Genoways, Alberto Cadena
The Phyllostomatid Bat, Vampyressa Brocki, In Colombia, Robert J. Baker, Hugh H. Genoways, Alberto Cadena
University of Nebraska State Museum: Mammalogy Papers
Between June 28 and July 1, 1969, while conducting studies on the karyotypes of phyllostomatid bats, the authors collected three specimens of Vampyressa brocki in mature tropical rainforest at Leticia, Amazonas. Colombia. Measurements and representative karyotypes are presented.
Variation And Ecology In A Local Population Of The Vesper Mouse (Nyctomys Sumichrasti), Hugh H. Genoways, J. Knox Jones Jr.
Variation And Ecology In A Local Population Of The Vesper Mouse (Nyctomys Sumichrasti), Hugh H. Genoways, J. Knox Jones Jr.
University of Nebraska State Museum: Mammalogy Papers
Vesper mice of the genus Nyctomys are relatively rare, arboreal rodents restricted to Middle America (eastern Panama to southern Mexico). Little is known concerning the biology of these secretive animals. Studies of variation of the one species, Nyctomys sumichrasti, have been limited to descriptions of new taxa (for example, see Goldman, 1916, 1937, and Laurie, 1953) and ecological observations have been confined to faunal accounts of political units (Goodwin, 1934; Hall and Dalquest, 1963) or were made coincidental to studies of other species (Lawlor, 1969; Fleming, 1970). Birkenholz and Wirtz (1965) recorded observations on the behavior, reproduction, and early …
Whole Issue Nebraska Bird Review (March 1972) 40(1)
Whole Issue Nebraska Bird Review (March 1972) 40(1)
Nebraska Bird Review
TABLE OF CONTENTS
Treasurer's Report ..................2
Sightings of the Common Crane (European) in Nebraska in Spring 1972 ..................3
A Great Blue Heron Colony in Hitchcock County ..................7
Winter Meeting ..................8
1971 Nebraska Nesting Survey ..................9
1971 Christmas Count ..................15
Addition to 1970 Nebraska Nesting Survey ..................21
Notes ..................22
Blood Chemistry Values For Some Fishes Of The Upper Mississippi River, Joseph B. Hunn
Blood Chemistry Values For Some Fishes Of The Upper Mississippi River, Joseph B. Hunn
Journal of the Minnesota Academy of Science
Plasma concentrations of sodium, potassium, calcium, magnesium, chloride, inorganic phosphate, glucose, lactic acid and total carbon dioxide and whole blood pH and hematocrit were determined for nine species of fish from the Upper Mississippi River area. Most of the values obtained fall within the range of values published for other freshwater fishes, except that the plasma concentrations of potassium and chloride in sexually mature walleye pike were low. The chloride was compensated for by a high plasma total carbon dioxide. Further studies should establish whether these blood chemistry values may be considered of normal range. counties.
Front Matter, Vol. 15 No. 4
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Ecology Of Sceloporus Occidentalis Longipes Baird And Uta Stansburiana Stansburiana Baird And Girard On Rainier Mesa, Nevada Test Site, Nye County, Nevada, Wilmer W. Tanner, James M. Hopkin
Ecology Of Sceloporus Occidentalis Longipes Baird And Uta Stansburiana Stansburiana Baird And Girard On Rainier Mesa, Nevada Test Site, Nye County, Nevada, Wilmer W. Tanner, James M. Hopkin
Brigham Young University Science Bulletin, Biological Series
This paper constitutes the first in a series of terminal reports to the United States Atomic Energy Commission for Contract AT (11–1) 1496. It includes a major study on the ecology and life history of Sceloporus occidentalis longipes Hollowell and a comparative study of three populations of Uta s. stansburiana Baird and Girard with special emphasis given for the Uta population on Rainier Mesa.
The study plot of major concern in this report is located on Rainier Mesa of the Nevada Test Site. Reports for other study plots (Frenchman's Flat–four study areas–and Mercury Valley ) will follow in the near …
End Matter, Vol. 15 No. 4
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Trypanosoma Lewisi Kent (Protozoa: Mastigophora): Ultrastructure And Theory Of Locomotion, Christine Wen Chan, David A. Becker
Trypanosoma Lewisi Kent (Protozoa: Mastigophora): Ultrastructure And Theory Of Locomotion, Christine Wen Chan, David A. Becker
Journal of the Arkansas Academy of Science
Trypanosoma lewisi Kent is a nonpathogenic hemoflagellate of rats (Rattus spp.). After briefly reviewing its infrastructure, the writers postulate that inside the flagellum the change in shape of kinetosomal plate 1 may cause one of the central microtubules and the helical-like structure to contribute to flagellar movement. The energy to run this system may be transferred from the kinetoplast with its associated mitochondrion.