Cannibalism and Predation by Aphids
نویسندگان
چکیده
منابع مشابه
Predation, Cannibalism, and the Dynamics of Tuna Populations
(continued on page 2) Introduction The unmistakable trend toward ecosystem approaches to fisheries management is documented in a wide range of official declarations, national and international guidelines, and national-level legislation. The central motivation for this movement is the view that a more holistic ecological perspective on fisheries can lead to more robust management strategies. Eco...
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Predatory behavior, a property associated with ecosystems, is not commonly observed in microorganisms. However, cannibalistic tendencies have been observed in microorganisms under stress. For example, pure culture of Bacillus subtilis exhibits cannibalism under nutrient limitation. It has been proposed that a fraction of cells in the population produce Spo0A, a regulatory protein that is respon...
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Aphids are major pests in apple orchards, debilitating the crop and spreading disease. We investigated whether early-season predation by canopy spiders may be effectively controlling aphid numbers in three organic orchards. For this purpose, we monitored the aphid population dynamics from the winter eggs to colony stages and compared this to spider abundances and rates of predation on aphids de...
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Effects of gunshot and human settlement on black bear numbers and range are well documented, but effects of natural factors are less well known. In this paper, effects of food supply, predation, cannibalism, and health problems on black bear populations are evaluated using information in the literature and data obtained in Minnesota during 1969-1978 from 119 radiocollared black bears and their ...
متن کاملDoes Tribolium brevicornis Cuticular Chemistry Deter Cannibalism and Predation of Pupae?
The cuticular hydrocarbons of insects are species-specific and often function as semiochemicals. The activity of Tribolium brevicornis cuticular hydrocarbons as feeding deterrents that ostensibly function to prevent pupal cannibalism and predation was evaluated. The cuticular hydrocarbons of T. brevicornis pupae were characterized and flour disk bioassays conducted with individual and combined ...
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ژورنال
عنوان ژورنال: Nature
سال: 1968
ISSN: 0028-0836,1476-4687
DOI: 10.1038/218491a0