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2003 Status & Trends Triennial Fish Monitoring Update to RMP Technical Review Committee Jennifer Hunt, Ben K. Greenfield, Jay A. Davis SFEI Marco Sigala,

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Presentation on theme: "2003 Status & Trends Triennial Fish Monitoring Update to RMP Technical Review Committee Jennifer Hunt, Ben K. Greenfield, Jay A. Davis SFEI Marco Sigala,"— Presentation transcript:

1 2003 Status & Trends Triennial Fish Monitoring Update to RMP Technical Review Committee Jennifer Hunt, Ben K. Greenfield, Jay A. Davis SFEI Marco Sigala, Cassandra Roberts, Rusty Fairey Moss Landing Marine Labs Dave Crane, Kathleen Regalado, L.Nguyen, Gary Ichikawa CDFG

2 2003 Status & Trends Triennial Fish Monitoring Status and Trends –7 species –Added PBDE analysis for S&T species –Looked at As in 5 individual leopard sharks & 3 smoothound sharks –Looked at MeHg in 9 individual leopard sharks and 9 individual smoothound sharks –We now have a time series - data from

3 Fish Tissue Analysis by Analyte Fish Species OC Analyses (PCBs, Pesticides)PBDEsHg - totalMeHgSeAs # of composites White Croaker11 Leopard Shark Striped Bass77 24 CA Halibut22 6 Shiner Surfperch14 Jacksmelt444 White Sturgeon447 7

4 2003 Results - Status All S&T fish below the SV (30 ng/g ww) for chlordanes Dieldrin SV (2.0 ng/g ww) only exceeded for white croaker (45%) and white sturgeon (50%)

5 Hg (ug/g ww) 2003 SV=0.3 ug/g ww

6 Aroclors (ng/g ww) 2003 SV=20 ng/g ww ND=6ND=1

7 DDTs (ng/g ww) 2003 SV=100 ng/g ww ND=8ND=2

8 PBDEs (ng/g ww) 2003 ND=7ND=2 ND=1

9 PBDEs PBDE 47 was the dominant congener PBDE 47>PBDE 100>PBDE 99>PBDE 153>PBDE 154 BDE-47, BDE-99, and BDE-100 are the most bioaccumulative congeners from the commercial Penta-BDE mixture (Oros 2005) Same order of magnitude found in RMP transplanted bivalves in 2003

10 Pilot Study Status Brown smoothhound, Chinook Salmon, walleye surfperch, black surfperch, brown rockfish Analyzed for PCBs and Hg 3 bycatch species (anchovy, sardine and herring) analyzed for PCBs, PBDEs and Hg Anchovy composite from South Bay had the 3 rd highest PBDE (total) concentration of all fish measured (64.5 ng/g ww)

11 Fish Tissue Analysis by Analyte Fish Species OC Analyses PCBs & PesticidePBDEsPCBs onlyHg - totalMeHgAs # of composites Brown Smoothhound Chinook Salmon 22 Walleye Surfperch 22 Black Surfperch 33 Rockfish 33 Anchovy - bycatch 222 Herring - bycatch1 11

12 Aroclors (ng/g ww) 2003 SV=20 ng/g ww 9.36% lipid

13 Hg (ug/g ww) 2003 SV= 0.3 ug/g ww

14 Trends RMP/BPTCP 4 sampling periods –1994, 1997, 2000, 2003 –White croaker, shiner surfperch, leopard shark, striped bass RMP plus previous programs –Hg in striped bass: , –Selenium in sturgeon: –Organics in sturgeon:

15 DDTs Wet Weight

16 Chlordanes Wet Weight

17 Lipid Content vs. Contaminants

18 DDTs Lipid Weight

19 Chlordanes Lipid Weight

20 PCB Aroclors Lipid Wt.

21 Data are standardized to a 55 cm fish Hg in Striped Bass

22 Selenium in White Sturgeon

23 Aroclors in Sturgeon

24 DDTs in Sturgeon

25 Chlordanes in Sturgeon

26 2003 Sturgeon Samples High in Lipid

27 Trends Summary Evidence of decline in lipid weight concentrations for DDTs and Chlordanes in most fish species PCB decline since 1994? White sturgeon organics - unusually elevated samples in 2003 No long-term trend in striped bass Hg No long-term trend in sturgeon Se

28 Trends Summary * = Lipid wt. - = Negative trend

29 Study Participants Jen Hunt, Ben Greenfield, Jay Davis, SFEI Rusty Fairey, Cassandra Roberts, Marco Sigala and crew, MLML Dave Crane and crew, CDFG - MPSL Gary Ichikawa and crew, CDFG RMP Fish Work Group


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