Figure 4 | Scientific Reports

Figure 4

From: Polycyclic aromatic hydrocarbon (PAH) source identification and a maternal transfer case study in threatened killer whales (Orcinus orca) of British Columbia, Canada

Figure 4

In-utero maternal transfer ratios (MTR) in J32 Mother and J32 Fetus Southern Resident killer whales (SRKW; O. orca). MTRs calculated based on skeletal muscle (SM) polycyclic aromatic hydrocarbon (PAH) concentrations (ng/g lipid weight) in AHC 14–5855 (J32) (J32 Mother) and her calf, AHC 14-5856 (J32 Fetus). MTR > 1 indicate the fetus was efficiently and preferentially exposed to the given contaminant while contaminants with MTR < 1 indicates they were not. The dashed red line indicates MTR = 1, representing equal partitioning of contaminant concentrations between fetus and mother.

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