Genetic Control of Insect Populations

Smith, Roger H.; Borstel, R. C. von

doi:10.1126/science.178.4066.1164

Cited by 47 publications

(3 citation statements)

References 69 publications

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“…Nous avons .donc tout intérêt à savoir de manière précise comment la régulation ou le maintien des populations s'effectue, non seulement à cause de l'importance intellectuelle intrinsèque du problème, mais aussi parce qu'une théorie générale permettra peut-être (ou sans doute) d'abor der les problèmes pratiques posés par la lutte contre les ravageurs (Levins, 1969 ;Smith et von Borstel, 1972) ou contre les parasites (Cohen, 1970), l'utilisation systématique et rationnelle par l'homme, pour des besoins de nourriture ou autres, de n'importe quelle espèce naturelle (pêcheries au sens large du terme), et l'aménagement du territoire sans les lamen tables et coûteux tâtonnements qui caractérisent nos approches actuelles.…”

Section: Energétique éCologique Et Croissance Des Populationsunclassified

Rapports entre l'écologie et la génétique des populations

Vuilleumier¹

1973

revec

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There is little doubt that a better understanding of biological phenomena taking place within natural populations must integrate the genetic and ecological approaches. In this essay, intended primarily for ecologists, I first reviewed the most usual models in population ecology based on the logistic equation and on the Lotka-Volterra models describing the dynamics, either of a single species population, or of a two-species system (competition or predator-prey), or else a multi-species system at equilibrium, that is when N = K. Then I mentioned some models used in population genetics to describe changes in allele frequencies and to define darwinian fitness. That way the origin of parameters that are fundamental to population ecology (r and K) and to population genetics (W) was reviewed. A fusion of these two disciplines is possible through the introduction of the concepts of r-and /(-selection. The latter selection mode is especially interesting because it permits one to develop models of density dependent selection, in which fitness is defined by ecological parameters (mostly K) that have different properties depending upon the genotype carrying them. In that view I cited several models of density dependent selection and discussed some of their actual or potential applications to important problems in population biology. So, topics apparently as diverse as isozyme polymorphism, random effects on colonizing populations, ecological energetics, and cyclic fluctuations may be examined both from a genetic and an ecological framework, thus demonstrating the validity of the suggestion made at the beginning of this paragraph. These first attempts at integration indicate the direction of the current that carries along the evolution of our ecological science. The vigorous renewal being operated at present started chiefly from theoretical considerations, and this must make it necessary for those who still consider theoretical models to be futile exercises when compared to gathering field data, to re-think their approach. As Levins (1966, 1968) has shown, there is no more dichotomy between theory and empiricism than between genetics and ecology when the goal of research is to explain how ecological systems work. It is of interest to note in passing that, when taken separately, genetics and ecology already possess an advanced theoretical structure, when compared with some other biological sciences. All one needs to do to be convinced of this is to consult recent texts : in genetics those of Wright (1968, 1969), Ewens (1969), Crow and Kimura (1970), and Kimura and Ohta (1971) ; in ecology, those of D’Ancona (1954), Bartlett (1960), Cohen (1967), Margalef (1968), and Pielou (1969). Yet integration is made difficult by the scarcity of common concepts, by the apparent difference between short term and long term kinds of evolution, by the great heterogeneity of both genetic and ecological systems, and by the technical obstacles to elaborating mathematical models. I chose to present here density dependent selection in some detail rather than to dilute the analysis by a more complete review including other developments, such as the concept of fitness set of Levins (1962, 1968), the evolution of life cycles (see Istock, 1967, 1970 ; Lewontin, 1965 ; Gadgil and Bossert, 1970), or mimicry (see Wickler, 1968 ; Pasteur, 1972 ; Williamson and Nelson, 1972). This choice was made because it seems to me that the selective mode called density dependent is the hinge between population ecology and population genetics. The models I reviewed, or others that will surely be invented in the future, will certainly oblige us to re-examine many mechanisms that are basic to the organization of communities, especially the evolution of territorial behavior (Schoener, 1971, 1973), symbiosis (Roughgarden, 1971ft), the evolution of niche width (Roughgarden, 1972), and the significance of predation (S. A. Levin, 1972). Future work will have to combine increasingly the theoretical and empirical approaches of field experimentation. As these two sorts of talents are rarely found in a single individual, it is obvious that population biology will have to be done by researchers of diverse orientations acting as a team.

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Section: Energétique éCologique Et Croissance Des Populationsunclassified

Rapports entre l'écologie et la génétique des populations

Vuilleumier¹

1973

revec

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“…The mechanisms by which these mutations cause lethality in Diptera in the developing zygote are now well documented (Smith andvon Borstel 1972, LaChance 1967); they are illustrated in Figure 1. The primary lesion leading to a dominant lethal mutation is a break in the chromosome, in this case, induced by radiation.…”

Section: Dominant Lethal Mutationsmentioning

confidence: 98%

“…This very diverse class exhibits widely different sensitivities, both within and between orders, to the induction of dominant lethal mutations (IDIDAS 2004, Bakri et al 2005, and to the somatic effects of radiation (Willard and Cherry 1975). Probably there are many factors that contribute to these differences, including the centromere structure (Smith and von Borstel 1972), the degree of chromosome condensation (Israelewski 1978), radiation repair (Beatty and Beatty 1967), and the chromosome environment (Thoday and Read 1947). This is certainly not an exhaustive list, and other factors, as yet unidentified, could still be important.…”

Section: Dominant Lethals and Speciesmentioning

confidence: 99%

Genetic Basis of the Sterile Insect Technique

Robinson

Sterile Insect Technique

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The use of the sterile insect technique (SIT) for insect control relies on the introduction of sterility in the females of the wild population. This sterility is produced following the mating of these females with released males carrying, in their sperm, dominant lethal mutations that have been induced by ionizing radiation. The reasons why the SIT can only be effective when the induced sterility in the released males is in the form of dominant lethal mutations, and not some form of sperm inactivation, are discussed, together with the relationship of dominant lethal mutations to dose, sex, developmental stage and the L 95

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The Parasitoid Wasps, Habrobracon and Mormoniella

Cassidy¹

1975

Invertebrates of Genetic Interest

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Genetic Control of Insect Populations

Cited by 47 publications

References 69 publications

Rapports entre l'écologie et la génétique des populations

Rapports entre l'écologie et la génétique des populations

Genetic Basis of the Sterile Insect Technique

The Parasitoid Wasps, Habrobracon and Mormoniella

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