The Evolutionary Significance of Genetic Diversity: Ecological, Demographic and Life History Correlates

Nevo, Eviatar; Beiles, Avigdor; Ben‐Shlomo, Rachel

doi:10.1007/978-3-642-51588-0_2

Cited by 675 publications

(399 citation statements)

References 320 publications

Supporting

Mentioning

333

Contrasting

Unclassified

Order By: Relevance

“…Pierce and Mitton (1980) similarly found a very strong and significant negative correlation between H (and particularly P) and the total amount of nuclear DNA in various species of salamander. This finding is in line with Nevo's (1984) generalisation for numerous species, that genetic diversity (H and P) is higher in species with a smaller diploid chromosome number. Thus these data clearly indicate that where potential conditions exist for a high interlocus variability, the intralocus variability tends to be low.…”

Section: Interlocus Interaction and Genetic Diversity Level In Populasupporting

confidence: 87%

“…Indeed, the evidence indicates that these populations commonly possess elevated levels of heterozygosity in comparison with cross-fertilised populations of the same species (Saura et aL, 1977;Lokki and Saura, 1980;Vrijenhoek and Lerman, 1982). In general, parthenogenetic species exhibit a significantly higher heterozygosity level than do primary outcrossing (i.e., sexual) species (H=0.301 vs. 0069; p <001) (Nevo et a!., 1984). The parthenogenetic species as a rule are polyploids, but even diploid parthenogenetic races have a higher H than do bisexuals.…”

Section: Interlocus Interaction and Genetic Diversity Level In Populamentioning

confidence: 99%

“…The explanation of genetic polymorphism in natural populations is a controversial issue among proponents of the neutral theory of protein evolution as opposed to those who favour the selection hypothesis (for review, see Nei, 1984;Nevo et aL, 1984). The neutral mutation hypothesis argues that the degree of heterozygosity (H) at steady state is proportional to the effective population size (N) and mutation rate per locus (u): H = 1-[1/(4Nu+1)] (Kimura and Crow, 1964).…”

Section: Introductionmentioning

confidence: 99%

“…The neutral mutation hypothesis argues that the degree of heterozygosity (H) at steady state is proportional to the effective population size (N) and mutation rate per locus (u): H = 1-[1/(4Nu+1)] (Kimura and Crow, 1964). Yet the range of average heterozygosity per locus per individual among species which are numerically extremely different is surprisingly narrow, being 005-0-18 for the overwhelming majority of species and only exceptionally 000-026 (Nevo, 1978;Nevo et aL, 1984). To cite Lewontin (1974, p. 208): "Since there is no reason to suppose that mutation rate has been specially adjusted in evolution to be reciprocal of population size for higher organisms, we are required to believe that higher organisms including man, mouse, Drosophila and the horseshoe crab all have population sizes within a factor of 4 of each other".…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Lerner's concept of developmental homeostasis and the problem of heterozygosity level in natural populations

Livshits

Kobyliansky

1985

Heredity

View full text Add to dashboard Cite

In recent years adherents of the neutral mutation hypothesis have conducted a variety of statistical tests concerning the applicability of their theory to data of biochemical genetic polymorphism in natural populations. From the other side, the involvement of natural selection as a main evolutionary force responsible for the observed levels of polymorphism and heterozygosity have also been proposed in numerous field studies and theoretical considerations. However, none of these hypotheses completely and satisfactorily explains the collected data. We believe that one of the main causes of the discrepancy in theories is that the variability at each locus is considered independently in both of the abovementioned approaches. Yet, it was suggested long ago, and now there is an increasing amount of evidence indicating cooperation between different loci which can influence the variability at each of them. Thus we think that the use of models considering the genome as a suit of independent genes is a priori expected to decrease the efficacy of the approximation.In the present review we attempt to draw attention to findings of interdependence of the variability of different characters and its possible limiting action on the growth of genetic diversity in natural populations. We do not try to give a universal explanation for the processes acting in populations and determining levels of heterozygosity. However, to our mind, the solution of the discussed question requires consideration of genes in their interactions.

show abstract

Section: Interlocus Interaction and Genetic Diversity Level In Populasupporting

confidence: 87%

Section: Interlocus Interaction and Genetic Diversity Level In Populamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Lerner's concept of developmental homeostasis and the problem of heterozygosity level in natural populations

Livshits

Kobyliansky

1985

Heredity

View full text Add to dashboard Cite

show abstract

“…The low level of variability detected in the wild samples of the other two species, C. savastanoi and B. oleae, can be related to their narrow host specialization (Nevo et a!., 1984). For B. oleae high genetic similarity has been found among distant geographi- Fig.…”

Section: Discussionmentioning

confidence: 96%

Allozyme divergence and phylogenetic relationships among species of tephritid flies

et al. 1996

View full text Add to dashboard Cite

Multilocus enzyme electrophoresis data from 24 orthologous loci (212 alleles) were used to infer the genetic similarities between 11 Tephritidae pest species from the Ceratitis, Trirhithrum, Capparimyia, Bactrocera, Anastrepha and Rhagoletis genera. Within some of the considered species, different degrees of genetic variability were demonstrated, which appear to be related to zoogeography and to the biological traits peculiar to each species. Nei (1978) and Cavalli-Sforza & Edwards (1967) genetic distances were used to express the genetic divergence and to infer phylogenetic relationships among the species. The UPGMA clustering algorithm and the optimality criteria of Fitch & Margoliash (1967), with (KIT5cH) and without (FITCH) the tree constrained to have contemporary tips, were used. All the methods indicate the same clusters of species. One cluster is composed of Ceratitis capitata, Trirhithrum coffeae and Capparimyia savastanoi, another is composed of Rhagoletis cerasi, Bactrocera dorsalis and Bactrocera oleae. A further loose cluster is comprised of Ceratitis rosa and Anastrepha spp. The congruence between electrophoretic phylogeny and morphological classification is discussed. Our analysis also elucidated cases, within the Ceratitis and Bactrocera genera, of interest from the evolutionary point of view, where allozyme dendrograms do not correlate well with morphological taxonomic relationships.

show abstract

Molecular evolution and ecological stress at global, regional and local scales: The Israeli perspective

Nevo

1998

J. Exp. Zool.

View full text Add to dashboard Cite

The Evolutionary Significance of Genetic Diversity: Ecological, Demographic and Life History Correlates

Cited by 675 publications

References 320 publications

Lerner's concept of developmental homeostasis and the problem of heterozygosity level in natural populations

Lerner's concept of developmental homeostasis and the problem of heterozygosity level in natural populations

Allozyme divergence and phylogenetic relationships among species of tephritid flies

Molecular evolution and ecological stress at global, regional and local scales: The Israeli perspective

Contact Info

Product

Resources

About