Search Results - "Karr, T L"

A Newly Discovered Bacterium Associated with Parthenogenesis and a Change in Host Selection Behavior in Parasitoid Wasps by Zchori-Fein, E., Gottlieb, Y., Kelly, S. E., Brown, J. K., Wilson, J. M., Karr, T. L., Hunter, M. S.

“…The symbiotic bacterium Wolbachia pipientis has been considered unique in its ability to cause multiple reproductive anomalies in its arthropod hosts. Here we…”
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Application of proteomics to ecology and population biology by Karr, T L

“…Proteomics is a relatively new scientific discipline that merges protein biochemistry, genome biology and bioinformatics to determine the spatial and temporal…”
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Gametic incompatibilities between races of Drosophila melanogaster by Alipaz, J. A., Wu, C., Karr, T. L.

“…Reproductive–isolating mechanisms between nascent species may involve sperm–egg recognition and have been best described in externally fertilizing organisms…”
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Interspecific and intraspecific horizontal transfer of Wolbachia in Drosophila by Boyle, L, O'Neill, S.L, Robertson, H.M, Karr, T.L

“…Cytoplasmic incompatibility (Cl) in Drosophila simulans is related to infection of the germ line by a rickettsial endosymbiont (genus Wolbachia). Wolbachia…”
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Organization of the Cytoskeleton in Early Drosophila Embryos by Karr, Timothy L., Alberts, Bruce M.

“…The cytoskeleton of early, non-cellularized Drosophila embryos has been examined by indirect immunofluorescence techniques, using whole mounts to visualize the…”
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Reduced Variation in Drosophila simulans Mitochondrial DNA by Ballard, JWO, Hatzidakis, J, Karr, T. L, Kreitman, M

“…We investigated the evolutionary dynamics of infection of a Drosophila simulans population by a maternally inherited insect bacterial parasite, Wolbachia, by…”
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Overcoming cytoplasmic incompatibility in Drosophila by Karr, T.L, Yang, W, Feder, M.E

“…Drosophila simulans…”
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Paternal products and by-products in Drosophila development by Pitnick, S, Karr, T.L

“…Tails of fertilizing spermatozoa persist throughout embryogenesis in…”
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Bidirectional incompatibility between conspecific populations of Drosophila simulans by O'Neill, S.L, Karr, T.L

“…Cytoplasmic incompatibility (CI) describes the phenomenon whereby eggs fertilized by sperm from insects infected with a rickettsial endosymbiont fail to hatch…”
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The Drosophila l(1)zw10 gene product, required for accurate mitotic chromosome segregation, is redistributed at anaphase onset by Williams, B.C. (Cornell University, Ithaca, NY), Karr, T.L, Montgomery, J.M, Goldberg, M.L

“…Mutations in the gene l(l)zw10 disrupt the accuracy of chromosome segregation in a variety of cell types during the course of Drosophila development…”
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The ins and outs of fertilization by Karr, Timothy L, Pitnick, Scott

“…Sperm gigantism in the genus Drosophila challenges our current understanding of the evolution of anisogamy. We have suggested previously that provisioning of…”
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Functional nonequivalence of sperm in Drosophila pseudoobscura by Snook, R.R, Markow, T.A, Karr, T.L

“…We report on a form of sperm polymorphism, termed polymegaly, that occurs in species of the Drosophila obscura group. Individual males of species in this group…”
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Virtual biology in the CAVE by Karr, T L, Brady, R

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Cytoplasmic Incompatibility and Sperm Cyst Infection in Different Drosophila-Wolbachia Associations by Veneti, Zoe, Clark, Michael E, Zabalou, Sofia, Karr, Timothy L, Savakis, Charalambos, Bourtzis, Kostas

“…Wolbachia are a group of maternally transmitted obligatory intracellular alpha-proteobacteria that infect a wide range of arthropod and nematode species…”
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Offsetting effects of Wolbachia infection and heat shock on sperm production in Drosophila simulans: analyses of fecundity, fertility and accessory gland proteins by Snook, R R, Cleland, S Y, Wolfner, M F, Karr, T L

“…Infection in Drosophila simulans with the endocellular symbiont Wolbachia pipientis results in egg lethality caused by failure to properly initiate diploid…”
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Biochemical characterization of related microtubule proteins in Drosophila melanogaster and adult rat brain by Srinivasan, Shaila, Karr, Timothy L.

“…We describe the biochemical characteristics of three proteins isolated from Drosophila embryos and the rat brain. We refer to these proteins as DMAPs…”
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Parasites in Drosophila embryos by GLOVER, D. M, RAFF, J, KARR, T. L, O'NEILL, S. L, LIN, H, WOLFNER, M. F

“…Sir-We wish to alert people studying early embryonic development in the fruitfly Drosophila melanogaster of the possible presence of commensal parasites in…”
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Genetic analysis of viable Hsp90 alleles reveals a critical role in Drosophila spermatogenesis by Yue, L. (SmithKline Beecham Pharmaceutical, Inc., King of Prussia, PA.), Karr, T.L, Nathan, D.F, Swift, H, Srinivasan, S, Lindquist, S

“…The Hsp90 chaperone protein maintains the activities of a remarkable variety of signal transducers, but its most critical functions in the context of the whole…”
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Only long sperm are fertilization-competent in six sperm-heteromorphic Drosophila species by Snook, Rhonda R., Karr, Timothy L.

“…Males of many species exhibit sperm heteromorphism, in which multiple morphologies of sperm are produced in a common testis (see references in [1])…”
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Biochemical and cytological characterization of DROP-1: a widely distributed proteoglycan in Drosophila by Graner, M, Stupka, K, Karr, T L

“…Using Drosophila testis as a source of antigen, 12 monoclonal antibodies were isolated that all recognize a set of three high molecular weight molecules…”
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