Research Abstract


Role of Huge Geometric Circular Structures in the Reproduction of a Marine Pufferfish

2013年7月1日 Scientific Reports 3 : 2106 doi: 10.1038/srep02106


川瀬 裕司1, 大方 洋二2 & 伊藤 公昭3

  1. 千葉県立中央博物館 分館海の博物館
  2. 東京都墨田区東駒形
  3. マリンステイション奄美
We report that male pufferfishes (Torquigener sp., Tetraodontidae) constructed large geometric circular structures on the seabed that played an important role in female mate choice. Males dug valleys at various angles in a radial direction, constructing nests surrounded by radially aligned peaks and valleys. Furthermore, they created irregular patterns in the nest comprising fine sand particles. The circular structure not only influences female mate choice but also functions to gather fine sand particles in nests, which are important in female mate choice. Strangely enough, the males never reuse the nest, always constructing a new circular structure at the huge cost of construction. This is because the valleys may not contain sufficient fine sand particles for multiple reproductive cycles.