Open Access. Powered by Scholars. Published by Universities.®
- Institution
- Keyword
-
- Brood parasitism (2)
- Molothrus ater (2)
- 4 - Evolutionary Biology & Paleontology (1)
- Bird repellent (1)
- Brown-headed Cowbird (1)
-
- Brown-headed Cowbirds (1)
- CO2 (1)
- Chemical Ecology, Sensory Biology (1)
- Chipping Sparrows (1)
- Common Grackle (1)
- Cydnidae (1)
- Denitrifier (1)
- Effective population size (1)
- Egg rejection (1)
- Egg removal (1)
- Evidence (1)
- Feeding preference (1)
- Genetics (1)
- Goldenrods, Herbivores, and Natural Enemies (1)
- Heterozygosity (1)
- Host selection (1)
- Inbreeding (1)
- Increase (1)
- Incubation efficiency (1)
- Insect parental care (1)
- Maternal behavior (1)
- Microsporogenesis (1)
- Nondisjunction (1)
- Oenothera (1)
- Parental behavior (1)
- Publication
-
- Gail Gasparich (3)
- Eric K. Bollinger (2)
- Frank E. Fish (2)
- Amy Sprenkle (1)
- Barbara S. Carlsward (1)
-
- Carl D. Anthony (1)
- David L. Mulcahy (1)
- Duncan J. Irschick (1)
- Elizabeth Jansen (1)
- Fatimah Linda Collier Jackson (1)
- Gretchen North (1)
- Jerald Dosch, PhD (1)
- Joel D Parker (1)
- John M. Stark (1)
- Kurt Olson (1)
- Larry Clark (1)
- Lawrence M. Schwartz (1)
- Marc Spingola (1)
- Roberta Pollock (1)
- Scott J. Meiners (1)
- Scott Kight (1)
- Warren G. Abrahamson, II (1)
- Winfried S. Peters (1)
- File Type
Articles 1 - 27 of 27
Full-Text Articles in Entire DC Network
Evolutionary Genetics And Genetic Variation Of Haplodiploids And X-Linked Genes, Philip W. Hedrick, Joel D. Parker
Evolutionary Genetics And Genetic Variation Of Haplodiploids And X-Linked Genes, Philip W. Hedrick, Joel D. Parker
Joel D Parker
The evolutionary genetics of haplodiploids and X-linked genes share many features and are different from diploid (autosomal) genes in many respects. For example, the conditions for a stable polymorphism, the amount of genetic load, and the effective population size are all expected to be quite different between haplodiploids or X-linked genes and diploids. From experimental data, the genetic load for X-linked genes is much less than autosomal genes and appears less for haplodiploids than for diploids. The observed amount of molecular variation for haplodiploids is much less than that for diploids, even more so than predicted from the differences in …
Egg Removal By Brown-Headed Cowbirds: A Field Test Of The Host Incubation Efficiency Hypothesis, Douglas R. Wood, Eric K. Bollinger
Egg Removal By Brown-Headed Cowbirds: A Field Test Of The Host Incubation Efficiency Hypothesis, Douglas R. Wood, Eric K. Bollinger
Eric K. Bollinger
Brown-headed Cowbirds (Molothrus ater) often remove host eggs, usually to the detriment of the host's reproductive success. We tested the hypothesis that host egg size and number influence the incubation efficiency of a parasitic egg. A single House Sparrow (Passer domesticus) or Brown-headed Cowbird egg was placed in each host nest (addition), and in some nests a host egg was removed as well (addition/removal). Hatching success and incubation length were measured to determine whether host-egg removal conferred an advantage in incubation efficiency compared to simple addition of a parasitic egg. Redwinged Blackbirds (Agelaius phoeniceus) and Chipping Sparrows (Spizella passerina) served …
Reinvigorating Introductory Biology: A Theme-Based, Investigative Approach To Teaching Biology Majors, Cynthia Norton, Lynne H. Gildensoph, Martha Phillips, Deborah Wygal, Kurt Olson, John Pellegrini, Kathleen Tweeten
Reinvigorating Introductory Biology: A Theme-Based, Investigative Approach To Teaching Biology Majors, Cynthia Norton, Lynne H. Gildensoph, Martha Phillips, Deborah Wygal, Kurt Olson, John Pellegrini, Kathleen Tweeten
Kurt Olson
No abstract provided.
Energetics Of Swimming By The Platypus Ornithorhynchus Anatinus: Metabolic Effort Associated With Rowing, Frank E. Fish, R V. Baudinette, P B. Frappell, M P. Sarre
Energetics Of Swimming By The Platypus Ornithorhynchus Anatinus: Metabolic Effort Associated With Rowing, Frank E. Fish, R V. Baudinette, P B. Frappell, M P. Sarre
Frank E. Fish
The metabolism of swimming in the platypus Ornithorhynchus anatinus Shaw was studied by measurement of oxygen consumption in a recirculating water flume. Platypuses swam against a constant water current of 0.45-1.0ms(-1). Animals used a rowing stroke and alternated bouts of surface and submerged swimming. Metabolic rate remained constant over the range of swimming speeds tested. The cost of transport decreased with increasing velocity to a minimum of 0.51 at 1.0ms(-1) Metabolic rate and cost of transport for the platypus were lower than values for semiaquatic mammals that swim at the water surface using a paddling mode. However, relative to transport …
Spiroplasma Lineolae Sp. Nov., From The Horsefly Tabanus Lineola (Diptera : Tabanidae), Frank E. French, Robert F. Whitcomb, Joseph G. Tully, Patricia Carle, Joseph M. Bové, Roberta B. Henegar, Jean R. Adams, Gail E. Gasparich, David L. Williamson
Spiroplasma Lineolae Sp. Nov., From The Horsefly Tabanus Lineola (Diptera : Tabanidae), Frank E. French, Robert F. Whitcomb, Joseph G. Tully, Patricia Carle, Joseph M. Bové, Roberta B. Henegar, Jean R. Adams, Gail E. Gasparich, David L. Williamson
Gail Gasparich
Collaborative Roles For C-Jun N-Terminal Kinase, C-Jun, Serum Response Factor, And Sp1 In Calcium-Regulated Myocardial Gene Expression, Patrick M. Mcdonough, Deanna S. Hanford, Amy B. Sprenkle, Noel R. Mellon, Christopher C. Glembotski
Collaborative Roles For C-Jun N-Terminal Kinase, C-Jun, Serum Response Factor, And Sp1 In Calcium-Regulated Myocardial Gene Expression, Patrick M. Mcdonough, Deanna S. Hanford, Amy B. Sprenkle, Noel R. Mellon, Christopher C. Glembotski
Amy Sprenkle
Ms2 Coat Protein Mutants Which Bind Qβ Rna, Marc Spingola, David S. Peabody
Ms2 Coat Protein Mutants Which Bind Qβ Rna, Marc Spingola, David S. Peabody
Marc Spingola
Spiroplasma Chrysopicola Sp. Nov., Spiroplasma Gladiatoris Sp. Nov., Spiroplasma Helicoides Sp. Nov., And Spiroplasma Tabanidicola Sp. Nov., From Tabanid (Diptera: Tabanidae) Flies, Robert F. Whitcomb, Frank E. French, Joseph G. Tully, Gail E. Gasparich, David L. Rose, Patricia Carle, Joseph M. Bove, Roberta B. Henegar, Meghnad Konai, Kevin J. Hackett, Jean R. Adams, Truman B. Clark, David L. Williamson
Spiroplasma Chrysopicola Sp. Nov., Spiroplasma Gladiatoris Sp. Nov., Spiroplasma Helicoides Sp. Nov., And Spiroplasma Tabanidicola Sp. Nov., From Tabanid (Diptera: Tabanidae) Flies, Robert F. Whitcomb, Frank E. French, Joseph G. Tully, Gail E. Gasparich, David L. Rose, Patricia Carle, Joseph M. Bove, Roberta B. Henegar, Meghnad Konai, Kevin J. Hackett, Jean R. Adams, Truman B. Clark, David L. Williamson
Gail Gasparich
Opercular Jetting During Fast-Starts By Flatfishes, E L. Brainerd, B N. Page, Frank E. Fish
Opercular Jetting During Fast-Starts By Flatfishes, E L. Brainerd, B N. Page, Frank E. Fish
Frank E. Fish
When attacked by predators, flatfishes perform fast-starts that result in a rapid take-off from the ocean bottom on which they lie. High-speed video recordings of the blind side of flatfishes indicate that they expel a coherent jet of water from the blind-side opercular valve during take-off. Buccal pressure recordings in winter flounder (Pseudopleuronectes americanus) show that a buccal pressure pulse begins 0-20 ms before the beginning of the fast-start and has a range of mean magnitudes for three individuals of 1.6-10.7 kPa. We hypothesize that one function of the opercular jet in flatfishes may be to reduce the effects of …
Explanations For The Infrequent Cowbird Parasitism On Common Grackles, Brian D. Peer, Eric K. Bollinger
Explanations For The Infrequent Cowbird Parasitism On Common Grackles, Brian D. Peer, Eric K. Bollinger
Eric K. Bollinger
We determined the factors responsible for the lack of parasitism on Common Grackles (Quiscalus quiscula) by Brown-headed Cowbirds (Molothrus ater). We found no evidence of parasitism on the 401 grackle nests we monitored in east-central Illinois. By the time cowbirds began laying eggs, 88.5% of all grackle nests were beyond the point of successful parasitism. Grackles rejected cowbird eggs more frequently during the prelaying stage of the nesting cycle (38.2%) compared to later stages (12.3%). Thirty-three cowbird eggs and nestlings were cross-fostered into grackle nests. Data were collected on 15 cowbird nestlings, of which three fledged. The cross-fostered cowbird eggs …
Methods Of Identifying The Avian Repellent Effects Of A Compound And Methods Of Repelling Birds From Materials Susceptible To Consumption By Birds, Larry Clark
Larry Clark
No abstract provided.
A Comparison Of Evolutionary Radiations In Mainland And West Indian Anolis Lizards. Ecology, Duncan J. Irschick, L. J. Vitt, P. Zani, J. B. Losos
A Comparison Of Evolutionary Radiations In Mainland And West Indian Anolis Lizards. Ecology, Duncan J. Irschick, L. J. Vitt, P. Zani, J. B. Losos
Duncan J. Irschick
Comparisons between closely related radiations in different environments provide a unique window into understanding how abiotic and biotic factors shape evolutionary pathways. Anolis lizards have radiated extensively in the West Indies, as well as mainland Central and South America. In the Caribbean, similar communities of anole species specialized for different habitats (ecomorphs) have evolved independently on each Greater Antillean island. We examined ecological and morphological data on 49 Anolis species (33 Caribbean, 16 mainland) to investigate whether the same set of ecomorphs has arisen in mainland regions. More generally, we investigated whether the relationship between ecology and morphology was similar …
Cooperative Functions Of The Reaper And Head Involution Defective Genes In The Programmed Cell Death Of Drosophila Central Nervous System Midline Cells, Lawrence M. Schwartz, L. Zhou, A. Schnitzler, J. Agapite, H. Steller, J. R. Nambu
Cooperative Functions Of The Reaper And Head Involution Defective Genes In The Programmed Cell Death Of Drosophila Central Nervous System Midline Cells, Lawrence M. Schwartz, L. Zhou, A. Schnitzler, J. Agapite, H. Steller, J. R. Nambu
Lawrence M. Schwartz
In Drosophila, the chromosomal region 75C1–2 contains at least three genes, reaper (rpr), head involution defective (hid), and grim, that have important functions in the activation of programmed cell death. To better understand how cells are killed by these genes, we have utilized a well defined set of embryonic central nervous system midline cells that normally exhibit a specific pattern of glial cell death. In this study we show that both rpr and hid are expressed in dying midline cells and that the normal pattern of midline cell death requires the function of multiple genes in the 75C1–2 interval. We …
Social Interactions In Two Sympatric Salamanders: Effectiveness Of A Highly Aggressive Strategy, Carl D. Anthony, Jill A. Wicknick, Robert G. Jaeger
Social Interactions In Two Sympatric Salamanders: Effectiveness Of A Highly Aggressive Strategy, Carl D. Anthony, Jill A. Wicknick, Robert G. Jaeger
Carl D. Anthony
In terrestrial plethodontid salamanders, aggressive behaviour is thought to function in the spacing of territorial residents among contested cover objects on the forest floor. Such behaviour, when exhibited toward heterospecifics, plays an important role in the competitive interactions between species. We compared levels of aggressive behaviour in intra- and interspecific contexts in two species of sympatric salamanders (Plethodon ouachitae and P. albagula) that have similar ecological requirements but differ in adult size. We also tested the effectiveness of such behaviour in holding cover objects (territorial foci) in the laboratory and on the forest floor. We predicted that if one species …
Evidence That Elevated Co2 Leveles And Indirectly Increase Rhizosphere Denitrifier Activity, D. Smart, K. Ritchie, John M. Stark, Bruce Bugbee
Evidence That Elevated Co2 Leveles And Indirectly Increase Rhizosphere Denitrifier Activity, D. Smart, K. Ritchie, John M. Stark, Bruce Bugbee
John M. Stark
No abstract provided.
Comparative Leaf Anatomy And Systematics In Dendrobium, Sections Aporum And Rhizobium (Orchidaceae), Barbara S. Carlsward, William Lois Stern, Walter S. Judd, Terence W. Lucansky
Comparative Leaf Anatomy And Systematics In Dendrobium, Sections Aporum And Rhizobium (Orchidaceae), Barbara S. Carlsward, William Lois Stern, Walter S. Judd, Terence W. Lucansky
Barbara S. Carlsward
The specialized leaf anatomy for species of Dendrobium within section Aporum is similar to that of species in section Rhizobium. In both sections leaves are characterized by a unifacial or nearly unifacial surface where the exposed surface is abaxial. However, leaves in section Rhizobium also feature a lacuna submerged in the mesophyll and surrounded by an adaxial epidermis. In contrast, leaves in section Aporum merely present an internal suture that divides the leaf into bilateral halves. These two sections of Dendrobium are hypothesized to be sister taxa because of synapomorphies in their foliar anatomy. A cladistic analysis performed with various …
Selective Predation On The Seeds Of Woody Plants, Scott J. Meiners, Edmund W. Stiles
Selective Predation On The Seeds Of Woody Plants, Scott J. Meiners, Edmund W. Stiles
Scott J. Meiners
Selective predation on the seeds of woody plants. J. Torrey Bot. Soc. 124: 67-70). 1997.-Seed predation may be an important factor influencing the structure of successional plant communities. We used a cafeteria-style experiment, placed in an old field and an early successional forest, to determine predator preferences for seeds of nine species of woody plants. Intensity of seed predation was equivalent in both sites. Seed predators preferred Acer saccharum, flex vertic illata, and Viburnum dentatum, but this was not related to seed mass. Predation intensity was more variable in the old field than in the forest, possibly related to the …
Root-Soil Contact For The Desert Succulent Agave Deserti Engelm. In Wet And Drying Soil, Gretchen North, P. Nobel
Root-Soil Contact For The Desert Succulent Agave Deserti Engelm. In Wet And Drying Soil, Gretchen North, P. Nobel
Gretchen North
To investigate the extent and size of root-soil air gaps that develop during soil drying, resin casts of roots of the desert succulent Agave deserti Engelm. were made in situ for container-grown plants and in the field. Plants that were droughted in containers for 7 and 14 d had 24 and 34% root shrinkage, respectively, leading to root-soil air gaps that would reduce the hydraulic conductivity at the root-soil interface by a factor of about 5. When containers were vibrated during drought, root-soil air gaps were greatly diminished, and the predicted conductivity at the interface was similar to that of …
Salt Tolerance Of Nestling Laughing Gulls: An Experimental Field Investigation, Jerald Dosch
Salt Tolerance Of Nestling Laughing Gulls: An Experimental Field Investigation, Jerald Dosch
Jerald Dosch, PhD
No abstract provided.
Evolutionary Ecology Across Three Trophic Levels: Goldenrods, Gallmakers, And Natural Enemies, Warren Abrahamson, A. Weis
Evolutionary Ecology Across Three Trophic Levels: Goldenrods, Gallmakers, And Natural Enemies, Warren Abrahamson, A. Weis
Warren G. Abrahamson, II
No abstract provided.
The Pax-5 Gene Is Alternatively Spliced During B-Cell Development, Patty Zwollo, Hector Arrieta, Kaleo Ede, Karen Molinder, Stephen Desiderio, Roberta Pollock
The Pax-5 Gene Is Alternatively Spliced During B-Cell Development, Patty Zwollo, Hector Arrieta, Kaleo Ede, Karen Molinder, Stephen Desiderio, Roberta Pollock
Roberta Pollock
The transcription factor Pax-5 is expressed during the early stages of B-cell differentiation and influences the expression of several B-cell-specific genes. In addition to the existing isoform (Pax-5, which we have named Pax-5a), we have isolated three new isoforms, Pax-5b, Pax-5d, and Pax-5e, from murine spleen and B-lymphoid cell lines using library screenings and polymerase chain reaction amplification. Isoforms Pax-5b and Pax-5e have spliced out their second exon, resulting in proteins with only a partial DNA-binding domain. Isoforms Pax-5d and Pax-5e have deleted the 3′-region, which encodes the transactivating domain, and replaced it with a novel sequence. The existence of …
Transplantation Of Fetal Neocortex Ameliorates Sensorimotor And Locomotor Deficits Following Neonatal Ischemic-Hypoxic Brain Injury In Rats, Elizabeth Jansen, Leah Solberg, Suzanne Underhill, Sarah Wilson, Constantino Cozzari, Boyd Hartman, Patricia Faris, Walter Low
Transplantation Of Fetal Neocortex Ameliorates Sensorimotor And Locomotor Deficits Following Neonatal Ischemic-Hypoxic Brain Injury In Rats, Elizabeth Jansen, Leah Solberg, Suzanne Underhill, Sarah Wilson, Constantino Cozzari, Boyd Hartman, Patricia Faris, Walter Low
Elizabeth Jansen
No abstract provided.
Anpassung - Kernpunkt Oder Mißverständnis Der Evolutionstheorie? [Adaptation - Essential Concept Or Misconception Of Evolutionary Biology?], Dieter Stefan Peters, Winfried Peters
Anpassung - Kernpunkt Oder Mißverständnis Der Evolutionstheorie? [Adaptation - Essential Concept Or Misconception Of Evolutionary Biology?], Dieter Stefan Peters, Winfried Peters
Winfried S. Peters
Concerns And Priorities In Genetic Studies: Insights From Recent African American Biohistory, Fatimah Linda Collier Jackson
Concerns And Priorities In Genetic Studies: Insights From Recent African American Biohistory, Fatimah Linda Collier Jackson
Fatimah Linda Collier Jackson
No abstract provided.
Effect Of Genome-Plastome Interaction On Meiosis And Pollen Development In Oenothera Species And Hybrids, Michael J. Chapman, David L. Mulcahy
Effect Of Genome-Plastome Interaction On Meiosis And Pollen Development In Oenothera Species And Hybrids, Michael J. Chapman, David L. Mulcahy
David L. Mulcahy
Oenothera villaricae Dietrich and Oe. picensis Dietrich, complete translocation heterozygotes, are fully interfertile, giving rise to six discrete classes of true breeding hybrids from a reciprocal cross. Associated with each parent and hybrid is a characteristic ab01tive non staining pollen fraction easily distinguished from fully developed pollen under the light microscope. Pollen abortion has been associated with translocation rings in other angiosperm species, and may characterize such sys tems. The abortive pollen fraction is significantly differ ent between reciprocal Oenothera hybrids, however (P<0.001), indicative of partial cytoplasmic control. Pol len abortion is most severe in the F 1 hybrid …
Factors Influencing Maternal Behaviour In A Burrower Bug, Sehirus Cinctus (Heteroptera: Cydnidae), Scott Kight
Factors Influencing Maternal Behaviour In A Burrower Bug, Sehirus Cinctus (Heteroptera: Cydnidae), Scott Kight
Scott Kight
The Spiroplasma Motility Inhibition Test, A New Method For Determining Intraspecific Variation Among Colorado Potato Beetle Spiroplasmas, Kevin J. Hackett, J. J. Lipa, G. E. Gasparich, D. E. Lynn, M. Konai, M. Camp, R. F. Whitcomb
The Spiroplasma Motility Inhibition Test, A New Method For Determining Intraspecific Variation Among Colorado Potato Beetle Spiroplasmas, Kevin J. Hackett, J. J. Lipa, G. E. Gasparich, D. E. Lynn, M. Konai, M. Camp, R. F. Whitcomb
Gail Gasparich