Table 4.

Interpretative approach of niche scenarios for Ae. albopictus and Ae. aegypti.

Indication	Mechanism		Aedes albopictus	Aedes aegypti
niche expansion	evolutionary changes		unlikely (no observed expansion)	unlikely (no observed expansion)
	changes in biotic interaction	absence of neg. interaction/presence of new pos. interaction	unlikely	unlikely
niche unfilling	dispersal limitation		likely (short time since invasion started but fast spreading velocity assumed)	unlikely (invasion process started long time ago)
	changes in biotic interaction	absence of pos. interaction/presence of new neg. interaction	unlikely	unlikely