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Shape of water son of aquadine4/29/2023 Fish were treated for 3 h (cobalt chloride or sham) and placed back in the experimental tank to recover for ∼18 h prior to behavioral testing. (A) Two dominant males acclimated on either side of an opaque barrier for 2 days with a quarter of a terracotta pot to serve as a territory. To our knowledge, this is the first study to implicate the lateral line system as a mode of social communication necessary for assessment during agonistic interactions.Įxperimental tank set-up for territorial interactions between dominant male Astatotilapia burtoni and verification of lateral line ablation treatments. In addition to a role in prey detection, the diversity of lateral line morphology in cichlids may have also enabled the expansion of their social behavioral repertoire. Our data suggest that the lateral line system facilitates the use of non-contact assessment and fight behaviors as a protective mechanism against physical damage. By chemically and physically ablating the lateral line system prior to forced territorial interactions, we showed that the lateral line system is necessary for mutual assessment of opponents and the use of non-contact fight behaviors. Astatotilapia burtoni males defend their territories from other males using aggressive behaviors that we classified as non-contact or contact. burtoni lateral line system is similar to that of many other cichlid fishes, containing lines of superficial neuromasts on the head, trunk and caudal fin, and narrow canals. The aim of this study was first to characterize the lateral line system of the African cichlid fish Astatotilapia burtoni and second to determine the role of mechanoreception during agonistic interactions. Visual, acoustic and chemosensory cues provide contextual information during social interactions, but the role of mechanosensory signals detected by the lateral line system during aggressive behaviors is unknown. Fish must integrate information from multiple sensory systems to mediate adaptive behaviors.
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