Natural Selection and Social Behavior: Recent Research and by Richard D. Alexander, Donald W. Tinkle

By Richard D. Alexander, Donald W. Tinkle

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Extra resources for Natural Selection and Social Behavior: Recent Research and New Theory

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C. Williams. I thank N. C. Kays Smiley for preparing the figure. Support was provided by NIH grant 5 T32 GM 07126. ' 58 Eusociality in Insects REFERENCES Alexander, R. D. 1974. The evolution of social behavior. Ann. Rev. Ecol. Syst. 5:325-383. Blick, J. 1977. Selection for traits which lower individual reproduction. J. Theor. Biol. 67:597-601. Charlesworth, B. 1978. Some models of the evolution of altruistic behavior between siblings. J. Theor. Biol. 72:297-319. Dawkins, R. 1976. The Selfish Gene.

Two nests with queens formed unsuccessful worker satellites that were never joined by other workers. One nest had three worker satellites; another had one queen satellite and four worker satellites. Considering only the first satellite formed by a given nest, only 2 of 17 satellites were initiated by workers when the queen was alive; the rest were initiated by the queen herself. Again considering only the first satellites formed by nests, 5 of 7 worker satellites were formed after the queen had died.

008 1\ I I \ I ~ - I Q) c 0 fft \ ,' 30 I/) In 1978 most satellites were initiated during the second half of May and early June. In all, 16 queen satellites and 23 worker satellites were begun. Workers from six nests with queen-initiated satellites began satellites about three weeks after queen satellite initiation. Five nests lacking queens began worker satellites; two nests with queens formed worker satellites. Two nests with queens formed unsuccessful worker satellites that were never joined by other workers.

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