Personality variation improves collective decision-making in cockroaches

摘要: Many animals live in groups and engage collective actions which can enhance their fitness. One common example is decision-making, mainly arises from social interactions that modify the individual behaviour. Despite widespread interest animal personalities on one hand effects (such as organisation, learning or anti-predator behaviour) other, question of how amount among-individual differences, coupled with interactions, influence group cohesion has rarely been addressed. For this purpose, I used a modelling approach based aggregation behaviour cockroaches to explore mechanisms underlying such context-dependent The results simulations considering different degrees (none, medium, high) personality variation non-social context were compared experimental patterns dynamics cockroaches. comparison between simulated data show only model considers differences individuals was able reproduce groups. In addition, models suggest some may play keystone role during dynamics, influencing others facilitating decision. Finally, amplifies inter-attractions, thus increasing speed aggregation, shedding light underpinning modification