Strains of Anopheles Quadrimaculatus

Inheritance of Color Patterns in the Larvae of Anopheles quadrim aculatus

L. T. Coggeshall,Laboratories of the International Health Division of The Rockefeller Foundation, New York

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Summary and Conclusions

  1. 1. By mass selection it was possible to obtain two separate colonies of Anopheles quadrimaculatus mosquitoes which appeared morphologically identical but whose larval and pupal offspring maintained distinctly different color patterns.
  2. 2. The color pattern which was selected as a character and proved to be inheritable was a broad white stripe on the dorsal surfaces of larvae and pupae.
  3. 3. Experiments showed that the ratio of striped to nonstriped larvae and pupae was not influenced by alterations in light, food, or temperature.
  4. 4. Preliminary experiments to determine if the two strains of artificially selected A. quadrimaculatus could be separated on the basis of their susceptibility to experimental malaria were negative in that they seem equally susceptible.