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Full-Text Articles in Life Sciences
Causes Of Mortality Of Wild Birds Submitted To The Charles Darwin Research Station, Santa Cruz, Galápagos, Ecuador From 2002-2004, Patricia Parker, Nicole Gottdenker, Timothy Walsh, Gustavo Jiménez-Uzcátegui, Franklin Betancourt, Marilyn Cruz, Catherine Soos, R. Miller
Causes Of Mortality Of Wild Birds Submitted To The Charles Darwin Research Station, Santa Cruz, Galápagos, Ecuador From 2002-2004, Patricia Parker, Nicole Gottdenker, Timothy Walsh, Gustavo Jiménez-Uzcátegui, Franklin Betancourt, Marilyn Cruz, Catherine Soos, R. Miller
Biology Department Faculty Works
Necropsy findings were reviewed from wild birds submitted to the Charles Darwin Research Station, Santa Cruz Island, Galápagos Archipelago between 2004 and 2006. One hundred and ninety cases from 27 different species were submitted, and 178 of these cases were evaluated grossly or histologically. Trauma and trauma-related deaths (n=141) dominated necropsy submissions. Infectious causes of avian mortality included myiasis due to Philornis sp. (n=6), avian pox (n=1), and schistosomosis (n=1).
Computational Design Of Orthogonal Ribosomes, Lon Chubiz, Christopher Rao
Computational Design Of Orthogonal Ribosomes, Lon Chubiz, Christopher Rao
Biology Department Faculty Works
Orthogonal ribosomes (o-ribosomes), also known as specialized ribosomes, are able to selectively translate mRNA not recognized by host ribosomes. As a result, they are powerful tools for investigating translational regulation and probing ribosome structure. To date, efforts directed towards engineering o-ribosomes have involved random mutagenesisbased approaches. As an alternative, we present here a computational method for rationally designing o-ribosomes in bacteria. Working under the assumption that base-pair interactions between the 16S rRNA and mRNA serve as the primary mode for ribosome binding and translational initiation, the algorithm enumerates all possible extended recognition sequences for 16S rRNA and then chooses those …
Heritability Of Longevity In Captive Populations Of Nondomesticated Mammals And Birds, Robert Ricklefs, Carlos Cadena
Heritability Of Longevity In Captive Populations Of Nondomesticated Mammals And Birds, Robert Ricklefs, Carlos Cadena
Biology Department Faculty Works
We used variance components analysis and offspring–parent regression to estimate the heritability of age at death in zoo populations of several species of mammals and birds. A meta-analysis over 14 species of mammals indicated a variance–component heritability of 0.53. More conservative regression estimates of heritability for the same species averaged 0.17. Offspring–parent regressions were not significant for any of eight species of birds. Heritabilities for data simulated with frailty and age-at-death models showed that sources of variation in age at death cannot be distinguished from observed heritabilities. The CVA in age at death in six mammal species, based on parent–offspring …
Phospholipase Dα3 Is Involved In The Hyperosmotic Response In Arabidopsis, Xuemin Wang, Yueyun Hong, Xiangqing Pan, Ruth Welti
Phospholipase Dα3 Is Involved In The Hyperosmotic Response In Arabidopsis, Xuemin Wang, Yueyun Hong, Xiangqing Pan, Ruth Welti
Biology Department Faculty Works
Rapid activation of phospholipase D (PLD), which hydrolyzes membrane lipids to generate phosphatidic acid (PA), occurs under various hyperosmotic conditions, including salinity and water deficiency. The Arabidopsis thaliana PLD family has 12 members, and the function of PLD activation in hyperosmotic stress responses has remained elusive. Here, we show that knockout (KO) and overexpression (OE) of previously uncharacterized PLDα3 alter plant response to salinity and water deficit. PLDα3 uses multiple phospholipids as substrates with distinguishable preferences, and alterations of PLDα3 result in changes in PA level and membrane lipid composition. PLDα3-KO plants display increased sensitivities to salinity and water deficiency …
First Male Sperm Precedence In Multiply-Mated Females Of The Cooperative Spider Anelosimus Studiosus (Araneae, Theridiidae), Thomas Jones, Patricia Parker
First Male Sperm Precedence In Multiply-Mated Females Of The Cooperative Spider Anelosimus Studiosus (Araneae, Theridiidae), Thomas Jones, Patricia Parker
Biology Department Faculty Works
No abstract provided.
Differential Degradation Of Extraplastidic And Plastidic Lipids During Freezing And Post-Freezing Recovery In Arabidopsis Thaliana, Xuemin Wang, Weiqi Li, Ruiping Wang, Maoyin Li, Lixia Li, Chuanming Wang, Ruth Welti
Differential Degradation Of Extraplastidic And Plastidic Lipids During Freezing And Post-Freezing Recovery In Arabidopsis Thaliana, Xuemin Wang, Weiqi Li, Ruiping Wang, Maoyin Li, Lixia Li, Chuanming Wang, Ruth Welti
Biology Department Faculty Works
Changes in membrane lipid composition play important roles in plant adaptation to and survival after freezing. Plant response to cold and freezing involves three distinct phases: cold acclimation, freezing, and post-freezing recovery. Considerable progress has been made toward understanding lipid changes during cold acclimation and freezing, but little is known about lipid alteration during post-freezing recovery. We previously showed that phospholipase D (PLD) is involved in lipid hydrolysis and Arabidopsis thaliana freezing tolerance. This study was undertaken to determine how lipid species change during post-freezing recovery and to determine the effect of two PLDs, PLDδ1 and PLD, on lipid changes …
The Plant Ontology Database: A Community Resource For Plant Structure And Developmental Stages Controlled Vocabulary And Annotations, Shulamit Avraham, Chih-Wei Tung, Katica Ilic, Pankaj Jaiswal, Elizabeth Kellogg, Susan Mccouch, Anuradha Pujar, Leonore Reiser, Seung Rhee, Martin Sachs, Mary Schaeffer, Lincoln Stein, Peter Stevens, Leszek Vincent, Felipe Zapata, Doreen Ware
The Plant Ontology Database: A Community Resource For Plant Structure And Developmental Stages Controlled Vocabulary And Annotations, Shulamit Avraham, Chih-Wei Tung, Katica Ilic, Pankaj Jaiswal, Elizabeth Kellogg, Susan Mccouch, Anuradha Pujar, Leonore Reiser, Seung Rhee, Martin Sachs, Mary Schaeffer, Lincoln Stein, Peter Stevens, Leszek Vincent, Felipe Zapata, Doreen Ware
Biology Department Faculty Works
The Plant Ontology Consortium (POC, http://www.plantontology.org ) is a collaborative effort among model plant genome databases and plant researchers that aims to create, maintain and facilitate the use of a controlled vocabulary (ontology) for plants. The ontology allows users to ascribe attributes of plant structure (anatomy and morphology) and developmental stages to data types, such as genes and phenotypes, to provide a semantic framework to make meaningful cross-species and database comparisons. The POC builds upon groundbreaking work by the Gene Ontology Consortium (GOC) by adopting and extending the GOC's principles, existing software and database structure. Over the past year, POC …
Puf1p Acts In Combination With Other Yeast Puf Proteins To Control Mrna Stability, Wendy Olivas, Randi Ulbricht
Puf1p Acts In Combination With Other Yeast Puf Proteins To Control Mrna Stability, Wendy Olivas, Randi Ulbricht
Biology Department Faculty Works
The eukaryotic Puf proteins bind 3′ untranslated region (UTR) sequence elements to regulate the stability and translation of their target transcripts, and such regulatory events are critical for cell growth and development. Several global genome analyses have identified hundreds of potential mRNA targets of the Saccharomyces cerevisiae Puf proteins; however, only three mRNA targets for these proteins have been characterized thus far. After direct testing of nearly 40 candidate mRNAs, we established two of these as true mRNA targets of Puf-mediated decay in yeast, HXK1 and TIF1. In a novel finding, multiple Puf proteins, including Puf1p, regulate both of these …
The Dynamic Evolutionary History Of The Bananaquit (Coereba Flaveola) In The Caribbean Revealed By A Multigene Analysis, Eva Bellemain, Eldredge Bermingham, Robert Ricklefs
The Dynamic Evolutionary History Of The Bananaquit (Coereba Flaveola) In The Caribbean Revealed By A Multigene Analysis, Eva Bellemain, Eldredge Bermingham, Robert Ricklefs
Biology Department Faculty Works
BackgroundThe bananaquit (Coereba flaveola) is a small nectivorous and frugivorous emberizine bird (order Passeriformes) that is an abundant resident throughout the Caribbean region. We used multi-gene analyses to investigate the evolutionary history of this species throughout its distribution in the West Indies and in South and Middle America. We sequenced six mitochondrial genes (3744 base pairs) and three nuclear genes (2049 base pairs) for forty-four bananaquits and three outgroup species. We infer the ancestral area of the present-day bananaquit populations, report on the species' phylogenetic, biogeographic and evolutionary history, and propose scenarios for its diversification and range expansion.ResultsPhylogenetic concordance between …