Figure 3
From: Behavioral traits and territoriality in the symbiotic scaleworm Ophthalmonoe pettiboneae
Sequence of a territorial interaction, with resident Ophthalmonoe pettiboneae intimidating an intruder, leading to the latter leaving the tube without being attacked by the former. (A) Progressive approach of the resident towards the intruder, with no reaction from the intruder. (B,C) Resident still approaching and intruder with part of its body outside the tube. (D) Resident at the tube opening and intruder swimming outside the tube. White arrows indicate the resident’s head; red arrows indicate the intruder’s head. Time course indicated in seconds.
