Results 101 to 110 of about 328 (135)

Acidic allomones in marine organisms

Journal of the Marine Biological Association of the United Kingdom, 1988
The phenomenon of acid secretion has arisen independently many times, for feeding, for penetrating calcareous material to make a shelter or to pursue prey, or for defence. This last category contains examples from many groups of marine organisms, in which acidic allomones may serve to deter fouling by epibionts or predation by teleost fish ...
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An ant-diversionary secretion of ticks: First demonstration of an acarine allomone

Journal of Insect Physiology, 1993
Abstract To determine whether the secretion of the large wax glands of ticks deters predators, we examined the responses of predatory ants to diverse ticks, to their secretions and to analogs of these secretions. Large wax glands ornament the surface of metastriate, but not Ixodes ticks, and secrete copiously when the tick is disturbed.
Jay A. Yoder, Richard J. Pollack, Andrew Spielman   +2 more
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Defensive allomones in three species ofHypselodoris (gastropoda: Nudibranchia) from the Cantabrian sea

Journal of Chemical Ecology, 1993
ThreeHypselodoris species,H. villafranca, H. cantabrica, and H. tricolor, have been studied in order to further investigate the defensive strategies of Chromodorididae mollusks from Iberian coasts. All animals possess large amounts of furanosesquiterpenoids, probably derived from their diet of sponges.
A, Fontana, C, Avila, E, Martinez, J, Ortea, E, Trivellone, G, Cimino   +5 more
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Pathogen-induced Release of Plant Allomone Manipulates Vector Insect Behavior

Journal of Chemical Ecology, 2008
Infochemicals mediate communication within and between different trophic levels. In this study, we identified a new type of plant allomone induced by a plant pathogen and perceived by its vector insect Cacopsylla picta. This phloem-feeding psyllid is the main vector of Candidatus Phytoplasma mali, a cell wall-lacking bacterium that causes the so-called
Christoph J, Mayer, Andreas, Vilcinskas, Jürgen, Gross   +2 more
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The potential role of web-based putrescine as a prey-attracting allomone

Animal Behaviour, 2017
The use of prey-attracting allomones is likely to be an effective foraging strategy for sit-and-wait predators. Despite this, the production and efficacy of such allomones have rarely been documented. Previous investigations into the chemical composition of spider silk have revealed the presence of a number of potential allomone chemicals such as the ...
Jessica Henneken, Jason Q.D. Goodger, Therèsa M. Jones, Mark A. Elgar   +3 more
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Defense Allomones of the Nudibranch Phyllidia varicosa Lamarck 1801

Helvetica Chimica Acta, 1979
AbstractThe defensive secretion of the nudibranch Phyllidia varicosa consists of two isocyanosesquiterpenes: the previously described 9‐isocyanopupukeanane (1), and its 2‐isomer (4), for which we report the structure and properties. The mixture originates with a sponge, Hymeniacidon sp., where it is produced in varying proportions. CD. measurements and
Mark R. Hagadone, B. Jay Burreson, Paul J. Scheuer, Janet S. Finer, Jon Clardy   +4 more
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Identification of ant repellent allomone produced by social waspPolistes fuscatus (Hymenoptera: Vespidae)

Journal of Chemical Ecology, 1984
Two active components were isolated from the ant repellent secretion produced by glandular cells on the sixth (terminal) gastral sternite ofPolistes fuscatus (F.) females. One of the components was identified as methyl palmitate. Field bioassays with synthetic methyl palmitate showed it had repellent activity againstSolenopsis geminata (F.)Forelius ...
D C, Posy, M A, Mohamed, H C, Coppel, R L, Jeanne   +3 more
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Defensive Allomones Function as Aggregation Pheromones in Diapausing Ladybird Beetles, Hippodamia convergens

Journal of Chemical Ecology, 2013
Identification of the stimuli responsible for the formation of an aggregation can be used to distinguish between social and non-social aggregations and help in the process of identifying the adaptive benefits of the gregarious behavior. The convergent ladybird beetle, Hippodamia convergens, forms dense aggregations during winter diapause.
Christopher A, Wheeler, Ring T, Cardé
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Pheromonal attraction and allomonal interruption ofIps pini in California by the two enantiomers of ipsdienol

Journal of Chemical Ecology, 1980
Air containing volatile compounds from around maleIps pini boring in ponderosa pine logs from California was condensed, fractionated by GC, and assayed in the laboratory and field. The only fraction that showed consistent activity in laboratory assays contained a single compound identified as ipsdienol (2-methyl-6-methylene-2,7-octadien-4-ol ...
M. C. Birch, D. M. Light, D. L. Wood, L. E. Browne, R. M. Silverstein, B. J. Bergot, G. Ohloff, J. R. West, J. C. Young   +8 more
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Synthesis of ?-lactonic pheromones ofXylocopa hirsutissima andVespa orientalis and an allomone of some ants of genusCamponotus

Journal of Chemical Ecology, 1983
Simple preparations ofcis-3,6-dimethyltetrahydro-2-pyrone, VII,6-n-undecyltetrahydro-2-pyrone, XVIIb, and 6-n-pentyl-5,6-dihydro-2-pyrone, XVIa, have been achieved. Products VII and XVIIb, respectively, are the major constituent of the pheromonal blend of a carpenter bee (Xylocopa hirsutissima) and the pheromone of the queens of the Oriental hornet ...
R, Bacardit, M, Moreno-Mañas
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