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The Journal of Heredity 1978:69(1):11-18
© 1978 The American Genetic Association 69:11-18

research-article

Genetics of conspicuous markings of the Io moth

THOMAS R. MANLEY

The author is professor of biology at Bloomsburg State College, Bloomsburg, Pennsylvania 17815, and research affiliate in entomology, Peabody Museum, Yale University, New Haven, Connecticut 06520

Abstract

The dorsal hindwing eyespot of Auiomeris io and other conspicuous markings associated with it are characterized. Modifiers maintain size in proportion to wing surface sufficient to provide an effective display of color as a predator-startling mechanism. Its reduction in size affects viability and fitness. Behaviorally, as a startling mechanism, it is genetically protected from variants that affect the eyespot itself, as evidenced by lethality of the homozygous dominant in the broken-eye variant and the rapid lowering of fitness in eyespot reduction experi ments. It would appear that the behavior activities as sociated with the eyespot as a mechanism for survival can be substantiated genetically.


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