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Articles 1501 - 1530 of 7528
Full-Text Articles in Entire DC Network
On The Genus Anchonus Schonherr In Florida (Coleoptera: Curculionidae), Michael C. Thomas
On The Genus Anchonus Schonherr In Florida (Coleoptera: Curculionidae), Michael C. Thomas
Insecta Mundi
Four species of Anchonus Schönherr occur in Florida: A. floridanus Schwarz, A. duryi Blatchley, A. blatchleyi Sleeper, and A. suillus (Fabricius), which is recorded from Florida and the continental United States for the first time. The species are distinguished in a key and illustrated. A lectotype is selected for A. floridanus.
Acmaeodera Pubiventris Horn (Coleoptera: Buprestidae): A Polytypic Species Or A Superspecies?, Richard L. Wescott
Acmaeodera Pubiventris Horn (Coleoptera: Buprestidae): A Polytypic Species Or A Superspecies?, Richard L. Wescott
Insecta Mundi
Acmaeodera pubiventris Horn was studied in detail and, without rejecting that it may be a superspecies, I concluded it is a polytypic species comprised of A. p. pubiuentris, A. p. lanata Horn, A. p. yumae Knull-these generally have been considered as full species-and a new subspecies, A. p. panocheae, described herein. It is suggested that A. p. yumae could be a megasubspecies. Detailed comparisons are made, variation is discussed, and biological and distributional data are provided. A. p. lanata is recorded from Mexico (Baja California) for the first time.
Notes On A New Mealybug (Hemiptera: Coccoidea: Pseudococcidae) Pest In Florida And The Caribbean: The Papaya Mealybug, Paracoccus Marginatus Williams And Granara De Willink, Douglass R. Miller, Douglas J. Williams, Avas B. Hamon
Notes On A New Mealybug (Hemiptera: Coccoidea: Pseudococcidae) Pest In Florida And The Caribbean: The Papaya Mealybug, Paracoccus Marginatus Williams And Granara De Willink, Douglass R. Miller, Douglas J. Williams, Avas B. Hamon
Insecta Mundi
Paracoccus marginatus Williams and Granara de Willink, here called the papaya mealybug, was first detected in the United States in Hollywood, Florida in 1998. By the end of 1998 it was found in four localities in the state and has since spread to nine localities in five counties. This mealybug appears to have moved through the Caribbean area since its 1994 detection in the Dominican Republic. The pest is reported to cause serious damage to tropical fruit, especially papaya, and has been detected most frequently, in Florida, on hibiscus. It is now known from Antigua, Belize, the British Virgin Islands, …
Termites Of The Genus Cryptotermes Banks (Isoptera: Kalotermitidae) From The West Indies, Rudolf H. Scheffrahn, Jan Krecek
Termites Of The Genus Cryptotermes Banks (Isoptera: Kalotermitidae) From The West Indies, Rudolf H. Scheffrahn, Jan Krecek
Insecta Mundi
A taxonomic revision of the genus Cryptotermes occurring in the West Indies is given based on recent collections from the Greater Antilles, Lesser Antilles, and the Bahamas. Seventeen indigenous and four nonindigenous species are described from external morphology of the soldier. The imago caste is also described for all but one species. The indigenous Cryptotermes comprise twelve new species, including C. aequacornis, C. cryptognathus, C. cylindroceps, C. cymatofrons, C. darlingtonae, C. juliani, C. maizgoldi, C. nitens, C. parvifroizs, C. rotundiceps, C. spathifrons, and C. undulans. Five indigenous species are redescribed, including C. cavifrons Banks, C. chasei Scheffrahn, C. …
Book Review: A World Catalogue Of Families And Genera Of Curculionoidea (Insecta: Coleoptera) (Excepting Scolytidae And Platypodidae) By Alonso-Zarazaga, M. A. And C. H. C. Lyal 1999., Charles W. O'Brien
Insecta Mundi
The authors of this superb catalogue deserve accolades for the splendid job they have performed in recording this list of all genus and family group names of all weevils, excluding only Scolytidae and Platypodidae, treated recently by others. Included are 5444 valid genera and 64 1 valid subgenera, with all of their synonyms. The fact that this work covers the World is unique in itself and the accuracy of the spelling and citations make it a pleasure to use. The bibliography includes more than three thousand citations. Type species are cited for all genera, and both type species and genera …
Identification Of The Pink Hibiscus Mealybug, Maconellicoccus Hirsutus (Green) (Hemiptera: Sternorrhyncha: Pseudococcidae, Douglass R. Miller
Identification Of The Pink Hibiscus Mealybug, Maconellicoccus Hirsutus (Green) (Hemiptera: Sternorrhyncha: Pseudococcidae, Douglass R. Miller
Insecta Mundi
The pink hibiscus mealybug, Maconellicoccus hirsutus (Green), has spread rapidly in the tropical and subtropical areas of the New World especially throughout the Caribbean Islands, and has recently been discovered in California, Mexico, and Belize. All instars of the pink hibiscus mealybug are described and illustrated to facilitate discovery of infestations. Comparisons with other common pest species are provided for most of the 8 instars, and a table is included that distinguishes the pink hibiscus mealybug from other pest species in the field.
Diet Preference, Competition And Learning In A Cloud Forest Hummingbird Community, September 1999, Meg Seifert, Ambrose Tuscano
Diet Preference, Competition And Learning In A Cloud Forest Hummingbird Community, September 1999, Meg Seifert, Ambrose Tuscano
Monteverde Institute: Tropical Ecology and Conservation
The purpose of this study was to determine hummingbird preference between protein and higher sugar concentrations, and how any preference affects competition and memory. We hung three sets of three feeders in triangular patterns and observed hummingbird visits and interactions. We also, noted solitary feedings on the days directly following both site establishment and feeder rotation. Our results showed that there was an overall preference for the feeder with higher sugar concentration, that larger species and newcomers were generally dominant and that birds did not take longer to learn the values of established leaders that had been rotated than feeders …
Edge Effects On Tropical Bird Nest Predation In Monteverde, Costa Rica, September 1999, Kristin C. Young
Edge Effects On Tropical Bird Nest Predation In Monteverde, Costa Rica, September 1999, Kristin C. Young
Monteverde Institute: Tropical Ecology and Conservation
Disturbances to continuous forest such as roads or cleared patches of land often cause forest fragmentation. Resulting tracts of forest are often too small to support populations of top predators. As a result of this, mesopredators populations are left unchecked and increase to unnatural abundances. One consequence of this is increased predation on tropical bird nests, which may put them at risk for extinction. I constructed 120 artificial bird nests and placed two quail eggs in each nest. Nests were situated along 12 transect lines that ran into the forest, perpendicular to a road in Monteverde, Costa Rica. Predation was …
Reproductive Strategies Of A Population Of Besleria Princeps In The Monteverde Cloud Forest, September 1999, Katie Obegi
Reproductive Strategies Of A Population Of Besleria Princeps In The Monteverde Cloud Forest, September 1999, Katie Obegi
Monteverde Institute: Tropical Ecology and Conservation
In this study I looked at reproductive strategies of Besleria princeps (Gesneriaceae). I took population sex ratios from 100 randomly chosen plants over a nine day period and found that individual flowers as well as the population as a whole were protandrous. There was a significant difference in the ratios of males to females from day one to day two. This protandrous system promotes outbreeding thereby reducing the negative effects of inbreeding. In a separate group of plants, I bagged 94 individuals including 162 buds. When the buds opened, I noted their sex and separated them into groups in which …
Structural And Chemical Changes In Leaves Of Cecropia (Cecropiaceae) With Plant Age, September 1999, James J. Garnsey
Structural And Chemical Changes In Leaves Of Cecropia (Cecropiaceae) With Plant Age, September 1999, James J. Garnsey
Monteverde Institute: Tropical Ecology and Conservation
Many tropical plants show age-related morphological and chemical changes that are adaptive to a particular environment. Generally, leaves of young plants have drip tips and increased secondary compounds while leaves of mature plants lack drip tips and are tougher. Cecropia polyphlebia and Cecropia obtusifolia are common pioneer tree species in Monteverde, Costa Rica that exhibit morphological and chemical changes with age. Here, I study how water content, herbivory, toughness and concentration of alkaloids change in the leaves of Cecropia as the plants age. Leaves from young, medium and mature aged plants were collected from gaps near the Estación Biológica Monteverde …
Vertical Niche Partitioning Between Gray-Breasted Wood-Wrens (Henicorhina-Leucophrys) And Ochraceous Wrens (Troglodytes Ochraceus), September 1999, Margaret Cronholm
Vertical Niche Partitioning Between Gray-Breasted Wood-Wrens (Henicorhina-Leucophrys) And Ochraceous Wrens (Troglodytes Ochraceus), September 1999, Margaret Cronholm
Monteverde Institute: Tropical Ecology and Conservation
The study of competition is important because the presence of one of the competing species reduces the fitness of the other; therefore, one of the species eventually will go extinct. This leads to the idea that all species must occupy different niches in order to coexist. Theories on niche partitioning in tropical forests have become important in order to explain their immense species richness and biodiversity. Two very similar species in the Monteverde area are the Gray-breasted Wood-Wren (Henicorhina leucophrys) and the Ochraceous Wren (Troglodytes ochraceus). These sympatric species are both foliage gleaners and are often found together in insectivorous …
Vertical Stratification In Color Complexes Of Ithomiine (Nymphalidae) Butterflies, September 1999, Elizabeth Levitt
Vertical Stratification In Color Complexes Of Ithomiine (Nymphalidae) Butterflies, September 1999, Elizabeth Levitt
Monteverde Institute: Tropical Ecology and Conservation
Ithomiine (Nymphalidae) butterflies are vertically stratified by color pattern in neotropical forests. Each of the five color patterns recognized represents a mimicry complex of several sympatric species. Vertical stratification between color complexes of Ithomiines has been attributed to crypticity and host plant stratification. Here, I study stratification between the clearwing and golden-translucent complexes in Monteverde, Costa Rica. As in other studies, clearwings tend to fly lower than golden-translucents. Host plants do not correspond well to flight heights for these species, however. Within complexes species are also vertically stratified with most similar species tending to separate, possibly to aid in mate …
Antillean Short-Eared Owls Invade Southern Florida, Wayne Hoffman, Glen E. Woolfenden, P. William Smith
Antillean Short-Eared Owls Invade Southern Florida, Wayne Hoffman, Glen E. Woolfenden, P. William Smith
Wilson Bulletin
No abstract provided.
Visual Communication And Sexual Selection In A Nocturnal Bird Species, Caprimulgus Ruficollis, A Balance Between Crypsis And Conspicuousness, Juan Aragones, Luis Arias Reyna, Pilar Recuerda
Visual Communication And Sexual Selection In A Nocturnal Bird Species, Caprimulgus Ruficollis, A Balance Between Crypsis And Conspicuousness, Juan Aragones, Luis Arias Reyna, Pilar Recuerda
Wilson Bulletin
No abstract provided.
Effects Of Prior Residence And Age On Breeding Performance In Yellow Warblers, G. A. Lozano, R. E. Lemon
Effects Of Prior Residence And Age On Breeding Performance In Yellow Warblers, G. A. Lozano, R. E. Lemon
Wilson Bulletin
No abstract provided.
Do Mammalian Nest Predators Follow Human Scent Trails In The Shortgrass Prairie?, Susan K. Skagen, Thomas R. Stanley, M. Beth Dillon
Do Mammalian Nest Predators Follow Human Scent Trails In The Shortgrass Prairie?, Susan K. Skagen, Thomas R. Stanley, M. Beth Dillon
Wilson Bulletin
No abstract provided.
The Paint-Billed Crake Breeding In Costa Rica, David M. Watson, Brett W. Benz
The Paint-Billed Crake Breeding In Costa Rica, David M. Watson, Brett W. Benz
Wilson Bulletin
No abstract provided.
Additional Records Of Fall And Winter Nesting By Killdeer In Southern United States, Kimberly G. Smith, W. Marvin Davis, Thomas E. Kienzle, William Post, Robert W. Chinn
Additional Records Of Fall And Winter Nesting By Killdeer In Southern United States, Kimberly G. Smith, W. Marvin Davis, Thomas E. Kienzle, William Post, Robert W. Chinn
Wilson Bulletin
No abstract provided.
Post-Migration Weight Gain Of Swainson's Hawks In Argentina, Michael I. Goldstein, Peter H. Bloom, Jose H. Sarasola, Thomas E. Lacher
Post-Migration Weight Gain Of Swainson's Hawks In Argentina, Michael I. Goldstein, Peter H. Bloom, Jose H. Sarasola, Thomas E. Lacher
Wilson Bulletin
No abstract provided.
Siblicide At Northern Goshawk Nests: Does Food Play A Role?, Wendy A. Estes, Sarah R. Dewey, Patricia L. Kennedy
Siblicide At Northern Goshawk Nests: Does Food Play A Role?, Wendy A. Estes, Sarah R. Dewey, Patricia L. Kennedy
Wilson Bulletin
No abstract provided.
Cooperative Foraging In The Mountain Caracara In Peru, Jason Jones
Cooperative Foraging In The Mountain Caracara In Peru, Jason Jones
Wilson Bulletin
No abstract provided.
Different Mechanisms Of C-Jun Nh2-Terminal Kinase-1 (Jnk1) Activation By Ultraviolet-B Radiation And By Oxidative Stressors, Mihail S. Iordanov, Bruce E. Magun
Different Mechanisms Of C-Jun Nh2-Terminal Kinase-1 (Jnk1) Activation By Ultraviolet-B Radiation And By Oxidative Stressors, Mihail S. Iordanov, Bruce E. Magun
CUP Faculty Research
Irradiation of mammalian cells with ultraviolet-B radiation (UV-B) triggers the activation of a group of stress-activated protein kinases known as c-Jun NH2-terminal kinases (JNKs). UV-B activates JNKs via UV-B-induced ribotoxic stress. Because oxidative stress also activates JNKs, we have addressed the question of whether the ribotoxic and the oxidative stress responses are mechanistically similar. The pro-oxidants sodium arsenite, cadmium chloride, and hydrogen peroxide activated JNK1 with slow kinetics, whereas UV-B potentiated the activity of JNK1 rapidly.N-acetyl cysteine (a scavenger of reactive oxygen intermediates) abolished the ability of all oxidative stressors tested to activate JNK1, but failed …
The Promethean, Volume 08, Number 01, Fall 1999, English Department, Concordia University-Portland
The Promethean, Volume 08, Number 01, Fall 1999, English Department, Concordia University-Portland
The Promethean
No abstract provided.
The Probe, Issue 204 - September 1999
The Probe, Issue 204 - September 1999
The Probe: Newsletter of the National Animal Damage Control Association
USFWS to Explore Canada Goose Management Strategies -- from a press release issued Aug. 3 by the US. Fish & Wildlife Service, written by Chris Tollefson.
Anti-Trapping Measure Passes House
Oregon Legislature Moves To Ensure Safety Of Its Citizens Against Cougars
Acord Promoted Away From Wildlife Services
New State Director US DA/APHIS in Mississippi is Kristina Godwin
BOOk R e v i e w : "Living With Wildlife: How to Enjoy, Cope With, and Protect North America's Wild Creatures Around Your Home and Theirs," The California Center for Wildlife, with Diana Landau and Shelley Stump. San Francisco: A Sierra Club …
Center For Sustainable Agricultural Systems Newsletter, September/October 1999
Center For Sustainable Agricultural Systems Newsletter, September/October 1999
Center for Sustainable Agricultural Systems: Newsletter (1993–2000)
Contents: New Energy in Farming Communities University Role in Biotechnology: How Do We Assess The Risks And Benefits? CSAS Director Receives Honorary Degree Sooby Now at OFRF NCR SARE Revised Web Site New Food Ethics Journal in 2000 DOE Announces New Wind Energy Initiative Conference Celebrates Sustainable Ag Coming of Age in 2000
September 1, 1999 Faculty Senate Minutes, University Of South Carolina
September 1, 1999 Faculty Senate Minutes, University Of South Carolina
Faculty Senate
No abstract provided.
News You Can Use, University Of Texas At Arlington Library
News You Can Use, University Of Texas At Arlington Library
News You Can Use
No abstract provided.
Northern Great Plains Region, Ron E. Martin
Northern Great Plains Region, Ron E. Martin
North American Birds
No abstract provided.
Wellness Center Healthletter - September 1999, Nova Southeastern University
Wellness Center Healthletter - September 1999, Nova Southeastern University
Wellness Center Healthletter
No abstract provided.
Mundos Subterráneos, No. 10, September 1999, José G. Palacios-Vargas
Mundos Subterráneos, No. 10, September 1999, José G. Palacios-Vargas
KIP Articles
Contents: Los Ciempiés y Milpiés -- Espeleolatría en la Ciudad de México -- Nuevos Registros de Colembolos ("Insecta") de Cuevas Venezolanas -- Factores de Riesgo para el Agua Subterránea en la Isla de Cozumel, Quintana Roo -- Lista Preliminar de la Espeleo-Fauna de la Isla Isabel Maria (Oaxaca, México) -- Rescate y Hallazgo Arqueológico de la Cueva de San Francisco, Trinitaria -- Notas de Información Bioespeleológica de América Latina y el Caribe, IX -- Directorios