Indirect defense of plants via ants

Many plant species produce extrafloral nectar on organs such as leaves, stems, and buds to attract ants, which then defend them against herbivores. We clarified the significance of extrafloral nectar for plants on the oceanic Ogasawara Islands.

Seed dispersal by ants

Ants play a crucial role in seed dispersal, a process known as myrmecochory. Myrmecochorous plants typically produce seeds with elaiosomes, which attract ants. We found the seed dispersal of an ericaceous species by ants.

Publications

Sugiura, S. (2010) Species interactions–area relationships: biological invasions and network structure in relation to island area. Proceedings of the Royal Society B: Biological Sciences, 277: 1807–1815.

Sugiura, S., Abe, T. & Makino, S. (2006) Loss of extrafloral nectary on an oceanic island plant and its consequences for herbivory. American Journal of Botany, 93 (3): 491–495. 

Sugiura, S. & Yamazaki, K. (2005) Seed dispersal of Epigaea asiatica(Ericaceae) by ants. Bulletin of the Forestry and Forest Products Research Institute, 4(3): 201–206. (PDF)