Genotype and Competitive Ability of Tribolium Species

Lerner, I. Michael; Ho, Frank K.

doi:10.1086/282196

Cited by 84 publications

(54 citation statements)

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“…All of these experiments have identified considerable amounts of genetical variation with respect to competitive interactions (Eggleston, 1985;de Miranda and Eggleston, 1987) and this supports earlier evidence for the heritability of competitive ability in genetical mixtures of Drosophila (Mather and Cooke, 1962;Gale, 1964), Hordeum (Sakai and Gotoh, 1955) and Tribolium (Lerner and Ho, 1961). In addition, the results of competition experiments between D. melanogaster and D. simulans (Moore, 1952) and those between wild type and dumpy wing mutants of D.…”

Section: Introductionsupporting

confidence: 83%

Competitive interactions in Drosophila melanogaster: recurrent selection for aggression and response

Hemmat

Eggleston

1988

Heredity

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Recurrent selection programmes for both high response and low aggression have been employed in the Texas population of Drosophila melanogaster. Five main points have emerged from this investigation. First, the population exhibits extensive genetic variation for the aggression and response components of competitive interactions which take place in genetically heterogeneous cultures. Secondly, the two components of such interactions, namely aggression and response, can be adjusted by the selection of particular groups of genes. Thirdly, the rapid change in the selected components in the early generations suggests that a considerable amount of additive genetic variation is involved in the control of aggression and response. This is further supported by estimates of the realised heritability taken over the whole selection programme which amount to O•79 and O•74 for the low aggression and high response selections respectively. Fourthly, the rapidity with which changes in aggression and response approached plateaux suggests that such changes in the earlier generations are primarily due to the assortment of major chromosomes as units. Fifthiy, it was concluded that aggression and response do not behave entirely independently or dependently. The results suggest that a single array of genes might be responsible for the determination of both characters. The observed results would then be consistent with certain of these genes having a much larger effect on aggression than they do on response.

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Section: Introductionsupporting

confidence: 83%

Competitive interactions in Drosophila melanogaster: recurrent selection for aggression and response

Hemmat

Eggleston

1988

Heredity

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“…Secondly, it is not possible to presume that the ecological differences found between subpopulations are due only to environmental differences between the locations studied. Lerner and Ho (1961) showed marked differences in the competitive abilities of different strains of Tribolium spp., and detailed studies of rabbit subpopulations living in apparently similar habitats sometimes show large and unexplained differences in reproductive success (Daly 1979;Wood 1979). Whether these differences are due to subtle environmental differences between the locations or to 'strain' differences between the rabbit sUbpopulations is hard to determine.…”

Section: Discussionmentioning

confidence: 99%

Ecological Genetics of the Wild Rabbit in Australia. III. Comparison of the Microgeographical Distribution of Alleles in Two Different Environments

Richardson¹

1980

Aust. Jnl. Of Bio. Sci.

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The differences in distribution of gene frequencies at three polymorphic loci (adenosine deaminase, carboxylesterase-1 and phosphogluconate dehydrogenase) were determined for rabbit populations living in two markedly different environments. One, a highland population from Snowy Plains N.S.W., has low productivity and high survival rates, and the second, a dry plains population from Urana, N.S.W., has high productivity and low survival rates. The amount of sub population differentiation at each locus was distinctive, and was different in the two environments with significant differentiation occurring for phosphogluconate dehydrogenase at both areas, for carboxylesterase-1 at Snowy Plains and for adenosine deaminase at Urana. The general significance of these results was demonstrated by determining the distribution of the variation in a third population. This population was subject to the same historical climatic events as the Urana population and showed a similar pattern of variation. Various explanations of the data are considered and a combination of chance and selection, rather than either alone, seems to offer the most satisfactory explanation. The demographic differences between the populations seemed to play no part in explaining the patterns observed.

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“…A frequent observation in competition experiments is that the performance of an F1 hybrid is generally superior to that of both parents (Robertson, 1960; Lerner and Ho, 1961;Dawson, 1966), an effect that even extends to crosses between different outbred populations (Vetukhiv, 1953;Brncic, 1954).…”

Section: Introductionmentioning

confidence: 99%

Analysis of dominance for competitive ability in Drosophila melanogaster

Miranda

Eggleston

1989

Heredity

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In these experiments the genetic basis of larval competition in Drosophila melanogaster was investigated. Competitive ability was defined by a series of regression coefficients relating larval performance to their mono-and duo-culture densities. Sixteen inter-related F1 hybrids were individually compared with their parents, revealing the presence of large amounts of dominance and heterosis for the various competitive parameters, all directed towards improved competitive ability. Analysis of the F1 hybrids amongst themselves revealed that most of the heterosis was due to either interchromosomal interaction, or the complementing action of haploid autosomes and relatively little was due to any specific interaction between the homologues. The relevance of these results to the current understanding of heterosis is discussed.

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Genotype and Competitive Ability of Tribolium Species

Cited by 84 publications

References 0 publications

Competitive interactions in Drosophila melanogaster: recurrent selection for aggression and response

Competitive interactions in Drosophila melanogaster: recurrent selection for aggression and response

Ecological Genetics of the Wild Rabbit in Australia. III. Comparison of the Microgeographical Distribution of Alleles in Two Different Environments

Analysis of dominance for competitive ability in Drosophila melanogaster

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