title: Activity patterns and time budgeting of Aplysia fasciata under field and laboratory conditions.
abstract: Activity patterns of Aplysia fasciata were observed in a protected port environment and in an aquarium. In both, major activities were feeding and mating, which collectively took up about 45% of the total time of the animals. Active behaviors occurred primarily at night; much of the day was spent in the inactive state. Activities were highly synchronized, with large numbers of animals performing the same behaviors simultaneously at a specific time. Mating and eating occurred primarily at different times; relatively few animals were observed performing these behaviors simultaneously. Many animals laying eggs were simultaneously mating as females.
mesh_terms: D000818:Animals; D001048:Aplysia; D002940:Circadian Rhythm; D005247:Feeding Behavior; D005260:Female; D008297:Male; D009043:Motor Activity; D012726:Sexual Behavior, Animal; D012931:Social Environment