Colony dispersal and the evolution of queen morphology in social Hymenoptera.
This work focuses on the characteristics of fission in the phylogenetically primitive ants Ponerinae in which both ergatoid queens and gamergates occur.
Fragmentation or Transportation: Mode of Large-Prey Retrieval in Arboreal and Ground Nesting Ants
This work investigated the behavioral response against large prey for 44 ant species of 34 genera belonging to eight subfamilies in Japan, Malaysia and Indonesia to investigate the mode of prey retrieval and factors affecting it.
Widespread occurrence of the microorganism Wolbachia in ants
- T. Wenseleers, F. Ito, S. van Borm, R. Huybrechts, F. Volckaert, J. Billen
- BiologyProceedings of the Royal Society of London…
- 7 August 1998
A first PCR–based Wolbachia screening in ants is reported on, finding that out of 50 Indo–Australian species, 50% screened positive for an A–group strain, and one of these species also harboured a B-group strain in a double infection.
Adaptive advantages of ant-dispersed seeds in the myrmecochorous plant Trillium tschonoskii (Liliaceae)
The relatively short-distance dispersal of T. tschonoskii seeds by ants is sufficient to reduce seedling mortality, by reducing competition between seedlings; and that this is the primary advantage of myrmecochory in this species.
Recent range expansion of the Argentine ant in Japan
- M. N. Inoue, E. Sunamura, Elissa L. Suhr, F. Ito, S. Tatsuki, K. Goka
- Environmental Science
- 1 January 2013
The large number of haplotypes found in Japan likely reflects the strong propagule pressure of L. humile resulting from the fact that the country is one of the top five importers of trade commodities world-wide and could explain the maintenance of genetic diversity of each independent introduction.
Ant Species Diversity in the Bogor Botanic Garden , West Java , Indonesia , with Descriptions of Two New Species of the Genus Leptanilla ( Hymenoptera , Formicidae )
- F. Ito
- Environmental Science
Ant fauna was investigated in the Bogor Botanic Garden (Kebun Raya Bogor), West Java, Indonesia, by the following sampling methods: (1) collection of ants on tree trunks, (2) collection of litter…
Seasonal cycle of colony structure in the Ponerine ant Pachycondyla chinensis in western Japan (Hymenoptera, Formicidae)
This work investigated the seasonal cycle of changes in the colony structure of Pachycondyla chinensis reproduced by alate queens in western Japan, and found the following novel biological characteristics of this species.
Colony composition and specialized predation on millipedes in the enigmatic ponerine ant genus Probolomyrmex (Hymenoptera, Formicidae)
- F. Ito
- BiologyInsectes Sociaux
- 1 February 1998
Colonies of Probolomyrmex dammermani Wheeler were collected in West Java, Indonesia and laboratory experiments showed that the ants fed only on polyxenids.
Queen-worker differences in spermatheca reservoir of phylogenetically basal ants
Compared the histological organization of spermathecae in 25 poneromorph species exhibiting various degrees of queen-worker dimorphism, a single difference shows the importance of a columnar epithelium in the reservoir for sperm storage inAnt queens.
Production and reproductive function of intercastes inMyrmecina gvaminicola nipponica colonies (Hymenoptera: Formicidae)
The ratio of polygynous colonies to monogynous colonies was lowest in July and highest in September, suggesting that polygyny results from newly inseminated intercastes remaining in their natal nests, although they leave those nests in the season of colonial budding.