More on Natural Selection for the Origin of Reproductive Isolation

@article{Ehrman1973MoreON,
  title={More on Natural Selection for the Origin of Reproductive Isolation},
  author={Lee Ehrman},
  journal={The American Naturalist},
  year={1973},
  volume={107},
  pages={318 - 319}
}
  • L. Ehrman
  • Published 1 March 1973
  • Biology
  • The American Naturalist
In a Letter to the Editor (Ehrman 1971), natural selection for the origin of reproductive isolation was studied via two chromosomally intersterile strains of Drosophila nmelanogaster. One replica, the B strain, had evolved a statistically significant degree of sexual isolation (isolation index 0.43 ? 0.08, where + 1.00 indicates no interstrain matings in multiple-choice direct observation tests) after 2 years of constant challenges to engage solely in intrastrain copulae. The data presented in… 

Speciation by Natural and Sexual Selection: Models and Experiments

It is shown that the geographical context of speciation can be viewed as a form of assortative mating and this provides a framework for interpreting results from laboratory experiments, which are found to agree generally with theoretical predictions about conditions that are favorable to the evolution of prezygotic isolation.

Artificial Selection in Drosophila simulans Males for Increased and Decreased Sexual Isolation from D. melanogaster Females

  • M. Eoff
  • Biology
    The American Naturalist
  • 1977
Crosses of homozygous yellow Drosophila melanogaster females with wild-type D. simulans males were studied, and it is clear that male isolation from foreign females has a genetic basis.

CHARACTER DISPLACEMENT FOR SEXUAL ISOLATION BETWEEN DROSOPHILA MOJAVENSIS AND DROSOPHILA ARIZONENSIS

Evidence for reproductive character displacement in natural populations is poor and controversial, and it is felt that many of these problems could be avoided if one could demonstrate character displacement for sexual isolation.

DISRUPTIVE SELECTION AND ASSORTATIVE MATING IN TRIBOLIUM CASTANEUM

Experimental studies of disruptive selection have shown that disruptive selection can increase phenotypic and genetic variability, and under what circumstances can disruptive selection lead to prezygotic reproductive isolation.

Still More on Natural Selection for the Origin of Reproductive Isolation

  • L. Ehrman
  • Biology, Environmental Science
    The American Naturalist
  • 1979
Odum, E. P. 1969. The strategy of ecosystem development. Science 164: 262-270. . 1977. The emergence of ecology as a new integrative discipline. Science 195:1289-1293. Simberloff, D. S., and E. 0.

LABORATORY EXPERIMENTS ON SPECIATION: WHAT HAVE WE LEARNED IN 40 YEARS?

The role of geographical separation in generating allopatry has been overemphasized in the past and its role in generating diminished gene flow in combination with strong, discontinuous, and multifarious divergent selection, has been largely unappreciated.

Some approaches to the question of Drosophila laterality

The results of courtship studies in D. paulistorum and melanogaster indicate that, although individual members of a strain may be entirely right or left dominant, the majority of individuals are ambidextrous.

Components of fitness in a compound chromosome strain of Drosophila melanogaster

The relative net fitness of a compound chromosome strain of Drosophila melanogaster was about 0.05, compared with the chromosomally normal strain from which it was derived, apparently due to assortative mating, in which normal females discriminated strongly against compound males.

Genotypic differences in larval olfactory discrimination in twoDrosophila melanogaster strains

The data suggested that the strains of larvae utilized here have the capacity for olfactory discrimination, and the strength of the stimulus necessary to elicit the response differed for the two strains.

SELECTION FOR SEXUAL ISOLATION BETWEEN GEOGRAPHIC FORMS OF DROSOPHILA MOJAVENSIS. I. INTERACTIONS BETWEEN THE SELECTED FORMS

  • H. R. Koepfer
  • Biology
    Evolution; international journal of organic evolution
  • 1987
Drosophila mojavensis comprises three geographic forms occurring in the United States, the Baja California peninsula, and mainland Mexico, and response to selection was highly asymmetrical in that isolation was very high between selected peninsular males and mainland females, but nonexistent between selected mainland males andPeninsular females.