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Direct and ecological costs of resistance to herbivory
Trends in Ecology & Evolution, 2002Herbivores can consume significant amounts of plant biomass in many environments. Yet plants are not defenseless against such attack. Although defenses might benefit plants in the presence of herbivores, herbivore attack varies both spatially and temporally, and the expression of plant resistance to herbivores can be costly in the absence of plant ...
Jennifer A. Rudgers +3 more
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Economic and Ecological Values of Resistant Plants
2019As a sole method, resistant cultivars help keep the population of key pests under check. Resistant cultivars under field conditions can obviate the need for application of insecticides. Resistant cultivars can well combine with natural enemies, cultural practices, mechanical and physical devices/barriers, microbial, insecticides, and molecular and ...
A. K. Chakravarthy +3 more
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Ecological and Evolutionary Aspects of Insecticide Resistance.
Ecology, 1997An evolution and ecological framework the genetic basis of insecticide resistance factors influencing selection for insecticide resistance selection against resistance pheno-types the biochemical and molecular bases of resistance: applications to ecological and evolutionary questions apply-ing the theory: the better management of resistance and pests ...
Michael A. Caprio, John A. McKenzie
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Unravelling the Ecology of Antibiotic Resistant Bacteria in the Nasopharynx
2010To study the dynamics and diversity of pneumococcal carriage and antibiotic resistance, a more thorough and systematic approach has been employed compared with routine surveillance of serotype and anti-biotic resistance. Up to ten pneumococcal isolates from pernasal (nose) and oropharyngeal (throat) sites are isolated and characterised.
Bambos M. Charalambous, Ndeky M. Oriyo
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Ecological Significance of Resistance to High Temperature [PDF]
, 1981 Heat as a stress factor limiting the survival of plants has been recognized for some time, and reports about plants in hot environments were already critically discussed by Sachs (1864). At first plant response to heat was treated as a physiological problem (Bělehradek 1935, and cf. Chap. 12, this Vol.).
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The ecology of mercury-resistant bacteria in Chesapeake Bay
Microbial Ecology, 1974Total ambient mercury concentrations and numbers of mercury resistant, aerobic heterotrophic bacteria at six locations in Chesapeake Bay were monitored over a 17 month period. Mercury resistance expressed as the proportion of the total, viable, aerobic, heterotrophic bacterial population reached a reproducible maximum in spring and was positively ...
J. D. Nelson, Rita R. Colwell
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The evolutionary ecology of insect resistance to plant chemicals
Trends in Ecology & Evolution, 2007Understanding the diversity of insect responses to chemical pressures (e.g. plant allelochemicals and pesticides) in their local ecological context represents a key challenge in developing durable pest control strategies. To what extent do the resistance mechanisms evolved by insects to deal with the chemical defences of plants differ from those that ...
Jean-Philippe David +3 more
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The ecology and evolution of host-plant resistance to insects
Trends in Ecology & Evolution, 1990Genetic techniques have yielded new insights into plant-herbivore coevolution. Quantitative genetic tests of herbivory theory reveal that in some cases insect herbivores impose selection on resistance traits. Also, some resistance traits are costly while others appear not to be, and genetic models can explain these results.
Ellen L. Simms, Robert S. Fritz
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Resistance and Pathogenicity: Epidemiological and Ecological Mechanisms
1985Resistance in host plants and pathogenicity in the organisms causing disease are inseparable and defining attributes of the disease interaction. These matching attributes have been intensively studied in two major contexts: to meet the often pragmatic needs of plant breeders; and to understand the host-pathogen relationship, perhaps the most subtle and
M. J. Jeger, J. V. Groth
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Ecological Sensitivity and Resistance of Cultures in Asia
Behavior Science Research, 1978Ecological influences on culture have been demonstrated by several in vestigators. Many such studies have been done in Asia where two ecological niches extend over vast areas. One of these is the highland or mountainous territory 500 meters above sea level; the other consists of plains and pla teaus under 500 meters.
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