Effects of habitat geometry on territorial defence costs in a damselfish

Article Abstract:

A study has been conducted to examine the effects of habitat geometry in territory defence costs in the Caribbean threespot damselfish, Stegastes planifrons, using the 'hard edge' and 'soft-edge with reserve' models. Threespots have been observed to move in short, round-trip forays to nearby areas from one patch of the reef cluster, with the intruders roaming around the patch at random. This suggests that the damselfish have already established known mutual boundaries and that there is little variation in defence costs in the damselfish.

Predation (Biology)

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Communication in coral reef fish: The role of ultraviolet colour patterns in damselfish territorial behaviour

Article Abstract:

The response of males, in natural territories on the reef and in aquaria, to two conspecific intruders, one presented in a ultraviolet (UV)-transmitting (UV+) container and the other in a UV-absorbing (UV-) one is studied to test the potential behavioral significance of the UV patterns. Pomacentrus amboinensis males attacked conspecific stimulus fish lacking their UV patterns significantly less often and for shorter periods than conspecific stimulus fish displaying their UV patterns.

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Territory revisits reduce intrusion during spawning trips by female yellowtail damselfish, Microspathodon chrysurus

Article Abstract:

Research on female yellowtail damselfish indicates that revisiting territory is a plastic trait that may be varied by females in response to pressure by intruders. Data are given for both single- and multiple-trip females.

Comparative analysis, Spawning

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