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TSQAP Risk Management: Catchment runoff & Biotoxins Shellfish Futures – Smithton 2014
10

Tsqap risk management tools shellfish futures 2014

Aug 05, 2015

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Page 1: Tsqap risk management tools   shellfish futures 2014

TSQAP Risk Management: Catchment runoff & Biotoxins

Shellfish Futures – Smithton 2014

Page 2: Tsqap risk management tools   shellfish futures 2014

Management of catchment risks• ID potential sources of pollution

• Find relationships – between environmental conditions and pollution

• Produce management plans – showing when it is safe to harvest

Page 3: Tsqap risk management tools   shellfish futures 2014

Identify pollution sources

Page 4: Tsqap risk management tools   shellfish futures 2014

Bacterial water sampling

30cm

surface25

30

35

Salinity

Vertical gradient of bacteria

Page 5: Tsqap risk management tools   shellfish futures 2014

Find Predictable relationshipsZone 5

0

20

40

60

80

100

120

140

160

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29 30 31 32 33 34 35 36 37

Salinity (PSU)

Th

erm

o-t

ole

ran

t co

lifo

rms p

er

10

0m

l

Site 3

Site 4

Site 10

ASQAP operations manual APC sampling:•TC >21 cfu/100ml (not >10%)•TC>14 cfu/100ml (not >median or 50%)

Page 6: Tsqap risk management tools   shellfish futures 2014

BOM & CSIRO (Sense-T)

Page 7: Tsqap risk management tools   shellfish futures 2014

OTHER ToolsWhole shellfish meat E.coli

Page 8: Tsqap risk management tools   shellfish futures 2014

Management of biotoxin risks• 2013 Biotoxin Management Plan (version 2.2)

• Meat sampling (primary tool)– Weekly in high & medium risk areas– Less in low risk & relay only areas

• Algal sampling (additional information)– Monthly

Page 9: Tsqap risk management tools   shellfish futures 2014

Biotoxin - Algal samplingIntegrated tube or Surface bottle

Biotoxin Meat samples

Page 10: Tsqap risk management tools   shellfish futures 2014

Summary• Thermo-tolerant coliforms in water– Indication within 24 hours (PRESUMPTIVE)– 2 days for full analysis (CONFIRMED)

• E. coli in meats– Rapid 24 hour test (e.g. Public Health Lab)

• BIOTOXINS Meat samples~ 3 days (CONFIRMED)

• BIOTOXINS Algal identification (Full counts)~5 days