Supplement to manuscript

Supporting data to manuscript: Maternal transfer of persistent organic pollutants to sea turtle eggs: addressing knowledge and data gaps toward an improved synthesis of research outputs

Note: Bibliographic detalis of references cited in the tables can be found in the reference list of the original paper.

Table A1: Data extraction and conversions for the individual studies included in the systematic search.

Table A2: Overview of mean (± standard error, SE) concentrations of OCPs reported in the current study that were extracted and converted from the literature (when available) into ng/g wet mass in either yolk or whole eggs. Details include sampling year (Samp. Date), species (Chelonia mydas, Cm; Caretta caretta, Cc; Dermochelys coriacea, Dc and Eretmochelys imbricata Ei), locations (F.W.I.: French West Indies, Yuc: Yucatan State, Q. Roo: Quintana Roo State), tissue sampled (whole egg: yolk + albumen) and number of eggs sampled (when unclear, a the estimated minimum number of eggs was taken, as this value was used to convert standard deviations into SE).

Fig A3: Trends in mean concentrations of ƩPCB and individual PCB congeners (± standard error in red dotted line) extracted and converted from the literature (when available) into ng/g wet mass in either yolk (triangles) or whole eggs (circles) for Caretta caretta (black), Chelonia mydas (green), Demorchelys coriacea (blue) and Eretmochelys imbricata (red).

Table A4: Overview of mean (± standard error, SE) concentrations of ƩPCB and individual PCB congeners (when available), extracted and converted from the literature into ng/g wet mass in either yolk or whole eggs. sampling year (Samp. Date), species (Chelonia mydas, Cm; Caretta caretta, Cc; Dermochelys coriacea, Dc and Eretmochelys imbricata Ei), locations (FWI: French West Indies, Yuc: Yucatan State, Q. Roo: Quintana Roo State) and tissue sampled (whole egg: yolk + albumen). Concentrations for coeluted compounds are repeated for each of the individual congeners that coeluted. No measure of sample variance (e.g. standard deviation or standard error) were available for the studies of Guirlet et al. 2010 and De Andres et al. 2016.