In Exp I, 2 territorial pairs of convict cichlid fish per aquarium were observed over 12 days. Aggressive behavior waned, but there was considerable between-days variability that was linked to progression from one stage in the parental cycle to the next (i.e., from no spawn to eggs, to larvae, and to free-swimming fry). The size of territory increased as one or the other pair progressed to the next stage. In Exp II, aggression in isolated pairs was studied during progression through the parental cycle, with a short daily presentation of a conspecific used as the stimulus. This procedure permitted study of changes in aggression unconfounded by the habituation that occurred in Exp I. It was predicted from Exp I that aggression would show increases at each stage transition. The predictions were supported. In Exp III, pairs were allowed to progress into the parental cycle in visual isolation from each other. When the pairs satisfied the requirements of being at different stages in the cycle, they were allowed visual access to each other. The pair with the more advanced spawn was initially more aggressive, but the aggressive behaviors did habituate. Results support the general tenets of P. M. Groves and R. F. Thompson's dual-process theory of habituation. (20 ref)
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Parental factors in the sensitization and habituation of territorial aggression in the convict cichlid ( )
Peeke, Harman V.; Peeke, Shirley C.
Follow Journal of Comparative and Physiological Psychology
, Volume 96 (6): 955
PsycARTICLES® – Dec 1, 1982
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