アカヤマアリ類(Formica亜属)における二次的多女王制の出現機構

概要

論文の詳細を見る
The comparative studies between monogynous (F. pratensis, F. rufa) and polygynous Formica (F. polyctena, F. lugubris) were made in mating season in Switzerland. The main results are : 1. The mating season was altitudinally different : early to late June in the lowland (400 to 500 m above the sea), mid June to mid July at ca. 1,000 m, even in August near the timberline (1,800 to 2,000 m). 2. Compared with monogynous species, the polygynous ones had following characteristics : i) Many colonies preferred more closed habitats, ii) In the colonies inhabiting the dense forest, the flight time was not so synchronized as in the open habitats, iii) The colony producing both sexes evenly was abundant, iv) Intracolonial copulation frequently occurred. 3. Most of the queens who flew up were virgin. On the other hand, the queens inseminated by males before flying up were apt to return to the mother colony. 4. The intracolonial copulation was caused by the males who lost the sexual continence to the concolonial queens. The natural selection inhibiting the flight of queens of polygynous Formica, was considered in connection with their temporary social parasitism.
北海道大学の論文
1983-12-20