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Articles 31 - 60 of 260
Full-Text Articles in Life Sciences
New Species Of American Bark Beetles (Scolytidae, Coleoptera), Stephen L. Wood
New Species Of American Bark Beetles (Scolytidae, Coleoptera), Stephen L. Wood
Brigham Young University Science Bulletin, Biological Series
The following 156 species of American Scolytidae are described as new to science: Cnesinus reticulus (Venezuela), C. beaveri (Brazil), C. teretis (Venezuela), C. alienus (Venezuela), C. deperditus (Colombia), C. fulgens (Venezuela), C. fulgidus (Colombia), C. lucaris (Venezuela), C. triangularis (Colombia), C. brighti (Mexico), C. coracinus (Mexico), Bothrosternus lucidus (Brazil), Hylastes niger (Mexico), Xylechinus mexicanus (Mexico), Phloeotribus nanus (Brazil), Chramesus corniger (Mexico), Ch. disparilis (Mexico), Ch. variabilis (Mexico), Ch. microporosus (Mexico), Ch. aquilus (Mexico), Ch. wisteriae (Mississippi), Ch. marginatus (Mexico), Carphoborus piceae (Oregon), Carphobius cupressi (Guatemala), Cladoctonus atrocis (Brazil), Scolytodes canalis (Mexico), S. costabilis (Mexico), Pseudothysanoes contrarius (Mexico), P. recavus (Mexico), …
Front Matter, Vol. 19 No. 1
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
End Matter, Vol. 19 No. 1
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Effects Of A Nuclear Detonation On Arthropods At The Nevada Test Site, Dorald M. Allred
Effects Of A Nuclear Detonation On Arthropods At The Nevada Test Site, Dorald M. Allred
Brigham Young University Science Bulletin, Biological Series
Fifty-three arthropod species were studied in an area affected by an underground nuclear detonation. These were represented by 10 species of ants, 17 beetles, 5 orthopterans, 4 scorpions, 6 solpugids, and 11 spiders (Table 16). Relative populations were determined prior to the detonation and at three periods after the detonation–(1) one and two months after (August and September 1962), (2) 11 months after (June 1963), and (3) 13 months after (August 1963). One and two months after the detonation, the number of species was reduced from the expected by 48 percent, by 52 percent after 11 months, and by 66 …
Front Matter, Vol. 18 No. 4
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
End Matter, Vol. 18 No. 4
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
An Ecological Survey Of The Algae Of Huntington Canyon, Utah, Lorin E. Squires, Samuel R. Rushforth, Carol J. Endsley
An Ecological Survey Of The Algae Of Huntington Canyon, Utah, Lorin E. Squires, Samuel R. Rushforth, Carol J. Endsley
Brigham Young University Science Bulletin, Biological Series
A quantitative and ecological study of the algae of Huntington Canyon, Emery County, Utah, was conducted from March 1971 to April 1972. Net plankton, nannoplankton, periphyton, and visible attached algae were studied. Certain physical and chemical parameters in the waters of Huntington Creek and a small pond along its course were also measured.
Huntington Creek contains a wide diversity of genera and species of algae. Diatoms are the main constituent of the flora of this stream throughout the year. Hydrurus foetidus is prevalent in Huntington Creek from late winter to early summer, and filamentous blue green algae abound in the …
Breeding Ecology Of Raptors In The Eastern Great Basin Of Utah, Dwight G. Smith, Joseph R. Murphy
Breeding Ecology Of Raptors In The Eastern Great Basin Of Utah, Dwight G. Smith, Joseph R. Murphy
Brigham Young University Science Bulletin, Biological Series
A comparative study of the breeding ecology of 12 raptor species was conducted in the eastern Great Basin from 1967-1970. The project was designed to determine the composition and densities, habitat selection, territoriality and predatory habits of raptorial birds in a semiarid environment. All topics were analyzed comparatively, relating the requirements and activities of the 12 raptor species.
Average yearly population densities of all species approximated 0.5 pairs per square mile, but much of the available habitat was not utilized. Predominant raptors were the Ferruginous Hawk and Great Horned Owl. Other important raptors included the Golden Eagle, Red-tailed Hawk and …
The Peregrine Falcon In Utah, Emphasizing Ecology And Competition With The Prairie Falcon, Richard D. Porter, Clayton M. White
The Peregrine Falcon In Utah, Emphasizing Ecology And Competition With The Prairie Falcon, Richard D. Porter, Clayton M. White
Brigham Young University Science Bulletin, Biological Series
This study was undertaken to record the known history of the Peregrine Falcon (Falco peregrinus) in Utah as we have been able to construct it from both the literature and from our original research that extends over about a 30-year period in the state. The present total population of the peregrine in Utah is possibly only 10 percent of what it has been in historic times. In an effort to find explanations for the decline, we have explored hypotheses of climatic changes, impact of pesticides, disease, and human disturbances. We conclude that pesticide contamination and climatic changes may …
Front Matter, Vol. 18 No. 3
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Front Matter, Vol. 18 No. 2
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Front Matter, Vol. 18 No. 1
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
End Matter, Vol. 18 No. 3
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
End Matter, Vol. 18 No. 1
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
End Matter, Vol. 18 No. 2
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.
Contributions To The Study Of The Genus Eriastrum: Ii. Notes Concerning The Type Specimens And Descriptions Of The Species, H. Keith Harrison
Contributions To The Study Of The Genus Eriastrum: Ii. Notes Concerning The Type Specimens And Descriptions Of The Species, H. Keith Harrison
Brigham Young University Science Bulletin, Biological Series
The species of the genus Eriastrum are described. Keys to the species and subspecies and the geographic ranges are provided. Discussions with regard to the type specimens or lectotypes and interspecific relationships are presented.
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.
Venezuelan Amblyopinini (Insecta: Coleoptera; Staphylinidae), C. E. Machado-Allison, Alfredo Barrera
Venezuelan Amblyopinini (Insecta: Coleoptera; Staphylinidae), C. E. Machado-Allison, Alfredo Barrera
Brigham Young University Science Bulletin, Biological Series
Eight species of the tribe Amblyopinini are known from Venezuela. The descriptions of five species (Amblyopinus proximus, A. intermedius and A. metasternalis plus Amblyopinodes major and A. venezolanus) are given in this paper. Megamblyopinus seeversi Machado-Allison and Barrera is placed in the genus Amblyopinus and A. bolivari Barrera, Machado-Allison and Muñiz is reduced to a subspecies of A. schmidti Seevers. Data on hosts and distribution are given for the new species as well as A. emarginatus Seevers and A. waterhousei Fauvel.
Labidocarpid Bat-Mites Of Venezuela (Listrophoroidea: Labidocarpidae), Burruss Mcdaniel
Labidocarpid Bat-Mites Of Venezuela (Listrophoroidea: Labidocarpidae), Burruss Mcdaniel
Brigham Young University Science Bulletin, Biological Series
Nine species of bat-mites representing six genera of the family Labidocarpidae are recorded from Venezuela. The genus Pseudoalabidocarpus is described as new and contains a single species, P. secus, new species, collected from Phyllostomus elongatus and P. discolor. Two other new species are described: Lawrenceocarpus phyllostomus, new species, collected from Phyllostomus elongatus and Micronycteris hirsuta; and Labidocarpus dossuarius, new species, collected from Molossus major. New distribution and host records from Venezuela include: Alabidocarpus furmani on Glossophaga longirostris, Carollia perspicillata, C. brevicauda, Vampyrops helleri, Anoura caudifera and Pteronotus parnellii; A. nicaraguae on Uroderma magnirostrum; A. jonesi on Vampyrops helleri; Parakosa tadarida …
Sucking Lice Of Venezuelan Rodents With Remarks On Related Species (Anoplura), Phyllis T. Johnson
Sucking Lice Of Venezuelan Rodents With Remarks On Related Species (Anoplura), Phyllis T. Johnson
Brigham Young University Science Bulletin, Biological Series
The paper includes discussions and descriptions of species of Anoplura known to occur on Venezuelan rodents, and of certain other taxa related to Venezuelan forms. Five genera are represented: Enderleinellus Fahrenholz—2 species: insularis Werneck and venezuelae Ferris; Hoplopleura Enderlein—19 species, 11 of them new: sciuricola Ferris; arizonensis Stojanovich and Pratt; aitkeni, new species; travassosi Werneck; abeli, new species; rimae, new species; angulata Ferris; indiscreta, new species; tiptoni, new species; handleyi, new species; eximia, new species; quadridentata (Neumann); contigua, new species; nesoryzomydis Ferris; oryzomydis Pratt and Lane; multilobata Werneck; splendida, new species; inusitata, new species; and orinocoi …
Fleas Of Venezuela, Vernon J. Tipton, Carlos E. Machado-Allison
Fleas Of Venezuela, Vernon J. Tipton, Carlos E. Machado-Allison
Brigham Young University Science Bulletin, Biological Series
Forty-three species of fleas were collected in Venezuela by personnel of the Smithsonian Venezuelan Project. Currently there are fifty-two species of fleas known from Venezuela. Four new taxa are described: Hormopsylla cryptica, Ctenidiosomus perplexus, Adoratopsylla antiquorum rara and Adoratopsylla antiquorum recta. The females of Adoratopsylla antiquorum discreta Jordan and Rothschildopsylla noctilionis (Costa Lima) are described. The families Stephanocircidae (Cleopsylla, Craneopsylla, Plocopsylla, Sphinctopsylla) and Pygiopsyllidae (Ctenidiosomus) are reported from Venezuela for the first time. Two male specimens of the genus Orchopeas constitute the first record of this genus in South America and records of species of the …
Mites Of The Family Laelapidae In Venezuela (Acarina: Laelapidae), Deane P. Furman
Mites Of The Family Laelapidae In Venezuela (Acarina: Laelapidae), Deane P. Furman
Brigham Young University Science Bulletin, Biological Series
This publication presents the results of an extensive survey of symbiotic laelapid mites of vertebrates from Venezuela. Over 40,000 vertebrates were examined from a wide variety of life zones and localities. The laelapid fauna represented includes 1 new genus, Hymenolaelpas, and 7 genera previously described: Laelaps, Mysolaelaps, Tur, Steptolaelaps, Neoparalaelaps, Gigantolaelaps, and Androlaelaps. The genera are represented by 51 species and subspecies, of which 8 are described as new. Previously unknown males and immatures of several species are described. Gigantolaelaps versteegi ( Oudemans ) is redescribed from type material; G. wolffsohni (Oudemans) is redescribed from Oudemans’ original material; G. peruviana …
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. …
Front Matter, Vol. 16 No. 4
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Front Matter, Vol. 17 No. 1
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Front Matter, Vol. 17 No. 3
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Front Matter, Vol. 17 No. 2
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Front Matter, Vol. 17 No. 4
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
End Matter, Vol. 16 No. 4
Brigham Young University Science Bulletin, Biological Series
No abstract provided.