Psychology & Neuroscience, Vol 17(4), Dec 2024, 336-347; doi:10.1037/pne0000343Objective: In this study, we utilized guppy larvae and juveniles using the plus maze with ramp (PMR) to obtain data on behavior during the early stages of their lives. The goal was to assess the animals’ sensitivity to the aversive stimulus generated by the PMR on anxiety-like behavior. Method: To carry out the study, a total of 240 guppies in larval and juvenile stages were used. The animals were divided into 20 groups (n = 12): 10 groups consisted of 7-day-old larvae and 10 groups consisted of 28-day-old juveniles. In the first phase, test aquariums with different water column heights (1.1, 1.3, 1.5 cm) were tested for various durations (5, 10, 15 min) to establish experimental parameters. Measurements included time spent in compartments and arm entries. In phase II, each arm of the PMR was divided into three equal parts: proximal, medial, and distal. Assessments included time in each part and the number of transpositions, representing behavioral and locomotor variables. Results: Our results show that the PMR induces avoidance behavior in ramped arms and increased exploration of flat arms. The data indicate the validity of using the apparatus to study anxiety-like behavior in developing fish. Conclusions: The data underscore the validity of using the apparatus to investigate anxiety-like behavior in fish during the developmental phase, presenting a valuable tool for exploring this phenomenon throughout the life cycle. (PsycInfo Database Record (c) 2024 APA, all rights reserved)
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This post is Copyright: | August 22, 2024