Results 211 to 220 of about 461,085 (255)

Nutritional Methods for Phytophagous Insects

The Canadian Entomologist, 1964
In 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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Adaptive genetic structure in phytophagous insect populations

Trends in Ecology & Evolution, 1996
Genetic 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, 1927
I 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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Interactions between chilean matorral shrubs and phytophagous insects

Oecologia, 1980
Lithraea caustica (Mol.) H. et Arn. and Colliguaya odorifera Mol. are two sclerophyllous shrubs of the scrub vegetation in Central Chile. These two species commonly grow in close association on equator-facing slopes. Leaves of L. caustica are severely predated upon by phytophagous insects while those of C. odorifera are rarely attacked.
Montenegro Rizzardini, Gloria, Jordán Zimmerman, Miguel, Aljaro M.E.   +2 more
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PHYTOPHAGOUS INSECT–MICROBE MUTUALISMS AND ADAPTIVE EVOLUTIONARY DIVERSIFICATION

Evolution, 2008
Adaptive diversification is a process intrinsically tied to species interactions. Yet, the influence of most types of interspecific interactions on adaptive evolutionary diversification remains poorly understood. In particular, the role of mutualistic interactions in shaping adaptive radiations has been largely unexplored, despite the ubiquity of ...
Janson, Eric M., Stireman, John O., III, Singer, Michael S., Abbot, Patrick   +3 more
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Mechanisms for regulating oxygen toxicity in phytophagous insects

Free Radical Biology and Medicine, 1990
The antioxidant enzymatic defense of insects for the regulation of oxygen toxicity was investigated. Insect species examined were lepidopterous larvae of the cabbage looper (Trichoplusia ni), southern armyworm (Spodoptera eridania), and black swallowtail (Papilio polyxenes).
S, Ahmad, R S, Pardini
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The Sympatric Origin of Phytophagous Insects

1997
Global estimates of the number of insect species now range from 10 to 30 million and the tally keeps growing. This means that roughly 75–95% of all living eukaryotic organisms are insects. No matter which figure you care to choose, the numbers are impressively large.
Guy L. Bush, James J. Smith
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Four invasive alien phytophagous insects new to Armenia

Phytoparasitica, 2020
A. I. Gubin
semanticscholar   +1 more source

Elevage et nutrition des insectes phytophages

1976
National ...
Feron, M., Guennelon, G.
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Sympatric Speciation in Phytophagous Parasitic Insects

1975
The appearance of new insect pests on economically important plants is a well-known phenomenon to many applied biologists. In addition, populations of introduced or native insects are frequently encountered which exhibit different host preferences, but which are morphologically indistinguishable from one another (Brues 1924, Simms 1931, Mayr 1942 ...
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