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Substances antiappétantes pour insectes phytophages
Biochemical Systematics and Ecology, 1986Abstract Twenty-two diversely substituted butadiynes have been tested for their insect antifeeding activity against Mythimna unipuncta, Spodoptera littoralis and Leptinotarsa decemlineata . The results in form of PA 50 (50% feeding of reference test) were submitted to Hansch linear regression analysis.
Muckensturm, B. +4 more
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Ecological speciation in phytophagous insects
Entomologia Experimentalis et Applicata, 2009AbstractDivergent natural selection has been shown to promote speciation in a wide range of taxa. For example, adaptation to different ecological environments, via divergent selection, can result in the evolution of reproductive incompatibility between populations.
Kei W. Matsubayashi +2 more
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Nutritional Methods for Phytophagous Insects
The Canadian Entomologist, 1964In biochemical studies of resistance of plants to insects knowledge of the nutritional needs of the insect is required. Some methods that have been developed or were adapted from studies with large animals are displayed.Larvae of the pale western cutworm, Agrotis orthogonia Morr., have been reared on diets prepared from wheat sprouts that have been ...
A. J. McGinnis, R. Kasting
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Host Specialization In Phytophagous Insects
Annual Review of Ecology and Systematics, 1990Insects are by far the most diverse group of organisms on Earth; estimates of their current diversity range as high as 30 million species (58). A large fraction of these species feed on plants (154, 214), and Mitter et al (134) have shown that plant-feeding clades are consistently much more diverse than their nonphytophagous sister groups.
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Host Odor Perception in Phytophagous Insects
Annual Review of Entomology, 1986Phytophagous insects show specialized feeding habits. In general, each species feeds on a restricted range of taxonomically related plant species and in addition limits its feeding to particular plant parts. Most studies on insect-plant rela tionships concern pest species in agricultural systems, which do not show the stability of the insect's ...
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On optimal oviposition behavior in phytophagous insects
Theoretical Population Biology, 1978Abstract A model is developed that predicts when an insect should oviposit on a potential larval host plant when it is encountered. Optimal behavior depends upon the suitability of this plant for larval development and on the probability of finding a more suitable host in the available time.
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Adaptive genetic structure in phytophagous insect populations
Trends in Ecology & Evolution, 1996Genetic variation in insect populations is frequently structured into discrete groups, or demes, that form in response to stochastic forces or natural selection. Because host-plant populations are often highly heterogeneous, phytophagous insects may form demes that are adapted to the unique traits of individual plants. Recent field experiments indicate
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Phytophagic or Biological Races in Insects
Nature, 1927I HAD no desire to enter into any controversial discussion with Dr. Heslop Harrison (whose letter in NATURE of April 16, p. 562, 1 regret not to have seen earlier), either in regard to his experiments or the conclusions he draws from them; I sought only to obtain some explanation of an alleged new principle in evolution, since anything that deserved ...
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