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Fig. 5. | BMC Biology

Fig. 5.

From: Stimulus-specific behavioral responses of zebrafish to a large range of odors exhibit individual variability

Fig. 5.

Behavior-based categorization of odors. a Dendrogram representing the hierarchical clustering based on Euclidean distances between odor-driven behaviors. b Pairwise Euclidean distances between behavioral responses to all odors using seven behavioral metrics (n = 10 fish; see the “Methods” section). Red indicates similar, and blue dissimilar, behavioral responses. c Representation of all odors with the first three principal components (PCs, see the “Methods” section). The percentage of behavioral variance explained by each PC is indicated between brackets. Gray lines indicate the distance of each odor to the water control (filled black dot). Food-related odors (food extract, histidine, nucleotides, methionine, phenylalanine, cysteine, and arginine) are represented by green circles. Social-related odors (bile acids, prostaglandin 2α, urea, and ammonium) are represented by blue squares. Decay odors (putrescine, spermine, cadaverine) are represented by magenta asterisks. Alarm odors (chondroitin sulfate, zebrafish blood, zebrafish skin extract) are represented by red crosses. df Respective contribution of all seven behavioral metrics to the three first principal components (PC1, PC2, and PC3)

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