Results 251 to 260 of about 1,607,402 (303)

Host age and host selection byTrichogramma nubilale

Entomophaga, 1990
Selection byTrichogramma nubilale (Ertle & Davis) for different aged egg masses ofOstrinia nubilalis (Hubner) was examined by separating components of parasitism. FemaleT. nubilale were exposed to egg masses of 2 different ages (freshly laid egg masses versus 1, 2, 3 or 4 day old egg masses), and the age of the initial egg mass inspected, number and ...
J. L. Hintz, D. A. Andow
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Influenza evolution with little host selection

Nature Ecology & Evolution, 2019
Influenza viruses undergo rapid antigenic evolution. Analysis of a large dataset of influenza virus sequences, using host age as a proxy for immune experience, shows no evidence for immune positive selection driving antigenic evolution in individual infected humans.
Katarina M, Braun, Thomas C, Friedrich
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Selectivity in supramolecular host–guest complexes

Chem. Soc. Rev., 2008
The background of possible selectivity-affinity correlations and their limitations is reviewed, with typical crown ether and cryptand complexes, ionic associations, hydrogen bonded complexes and complexes driven by van der Waals, stacking or hydrophobic interactions, with some additional topics including associations based on metal coordination as ...
Hans-Jörg, Schneider, Anatoly K, Yatsimirsky   +1 more
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Host Plant Selection

2003
Generally, host plant selection of leaf-cutting ants and particularly the mechanisms of selective foraging in Atta ants have been extensively studied with laboratory colonies as well as with natural colonies in the field using pick-up assays as method for both (e.g., Cherrett 1972a,b; Hubbell and Wiemer 1983; Howard 1987, 1988; Vasconcelos and Cherrett
Rainer Wirth, Hubert Herz, Ronald J. Ryel, Wolfram Beyschlag, Bert Hölldobler   +4 more
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Host selection by a kleptobiotic spider

Naturwissenschaften, 2004
Why do kleptobiotic spiders of the genus Argyrodes seem to be associated with spiders of the genus Nephila worldwide? Observations following introduction of experimental insect prey of different sizes and weights on to host webs revealed that: (1) small prey are more effectively retained on the web of Nephila clavipes than on the web of another common ...
Yann, Hénaut, Juliette, Delme, Luc, Legal, Trevor, Williams   +3 more
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Bacterial Virulence and Host Selection

Journal of Burn Care & Rehabilitation, 1991
A clinically lethal strain of Pseudomonas aeruginosa was tested and its growth patterns in normal plasma and in normal whole blood clotted with thrombin were compared. Two stock cultures were used; one was maintained in liquid nitrogen and one was passed from plate to plate 24 times on blood agar plates at room temperature.
C G, Ward, J J, Bullen, P B, Spalding
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Parasites, Immunology of Hosts, and Host Sexual Selection

The Journal of Parasitology, 1994
Parasite-mediated sexual selection is reviewed with special emphasis on the bird literature. Choosy females may benefit from choosing parasite-free mates if such males provide better parental care, do not transmit contagious parasites, or provide resistance genes to offspring. There is evidence in support of each of these mechanisms.
Anders Pape Møller, Nicola Saino, Anders Pape Moller   +2 more
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Factors affecting host selection in an insect host–parasitoid interaction

Ecological Entomology, 1997
1. Many parasitoids can develop successfully in different stages of the same host but the costs of parasitism may vary between the stages. The stage of host attacked has generally been determined when there is no choice, giving a misleading impression of host selection or preference. 2. The rate of parasitism by a
Sait, S.M., Begon, M., Thompson, D.J., Harvey, J.A., Hails, R.S.   +4 more
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Selective molecular hosts for anions

Pure and Applied Chemistry, 1989
Abstract
F. P. Schmidtchen, Alexander Gleich, A. Schummer   +2 more
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Selective attention and host‐plant specialization

Entomologia Experimentalis et Applicata, 1996
AbstractThe importance of attentional processing is summarized, and the different ways in which selective attention is maintained, explained. Examples from arthropods are highlighted. The significance of selective attentiveness for insect herbivores is discussed.
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