论文信息 - Correlates of territory size in the butterflyfish Chaetodon austriacus (Rüppell)

Correlates of territory size in the butterflyfish Chaetodon austriacus (Rüppell)

Abstract Using an observational approach, the territorial behaviour of the coral feeding butterflyfish Chaetodon austriacus was investigated on three fringing reefs in the northern Red Sea. C. austriacus pairs defended exclusive feeding territories against conspecifics. Territories varied in area between 10 m 2 and 300 m 2 . Territory holders defended intrusions of territory borders by means of aggressive displays and chases, but rate of aggression was not related to either territory area or perimeter. However, movement rate and feeding rate were related to territory perimeter and area and may therefore be indicators of cost and benefit when considering the economics of territory defence.

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