Summary
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1.
Data on the natural occurrence of the microgyne form ofMyrmica rubra L. are given, showing it to be more common than previously suspected.
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2.
Morphometrics show that the microgynes are an isometric reduction of the normal queens.
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3.
Experimental evidence is given to show that microgynes tend to breed true and that they have a queen effect that is similar to normal queens.
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4.
The origin of the microgyne polymorphism is discussed and it is concluded that it is genetic, microgynes perhaps being an atavistic form of the species.
Résumé
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1o
Des données sur la fréquence naturelle de la forme microgyne deMyrmica rubra L. montrent que cette forme est plus commune qu'on ne le supposait.
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2o
Des données morphométriques montrent que les microgynes représentent une réduction isométrique des reines normales.
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3o
Des preuves expérimentales montrent que les microgynes tendent à se reproduire véritablement et qu'elles ont une action royale semblable à celle des reines normales.
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4o
L'origine du polymorphisme conduisant à la forme microgyne est discutée et l'auteur aboutit à l'idée d'un polymorphisme génétique, les microgynes étant peut-être une forme atavique de l'espèce.
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Elmes, G.W. Some observations on the microgyne form ofMyrmica rubra L. (Hymenoptera, Formicidae). Ins. Soc 23, 3–21 (1976). https://doi.org/10.1007/BF02283902
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DOI: https://doi.org/10.1007/BF02283902