Fish Residues

Page No. Source Quotes from Decision Documents
325 2 Agency App. B “fluoroacetae is readily distributed around the body, between vascular compartments and within tissues”
359 7 Agency App. C “residues [in crayfish and eels] decline significantly over a short period of time (8-9 days)”
360 2 Agency App. C “the Agency was not able to locate, any data on the aquatic toxicity of the metabolite fluorocitrate in water or soil”
360 5 Agency App. C “96-hour [exposure of Rainbow trout, half of individuals dead at] 54 mg/l, sub-lethal effects on survivors – not specified”
360 7 Agency App. C “[24 hour study] no ‘ill-effects’ [on rainbow trout] at 580 mg/ further information available”
361 1 Agency App. C “Fingerling bream and signs of toxicity at 370 mg/ further information available”
361 2 Agency App. C “Fingerling trout (species not identified) ‘ill effects’ at 500 and further information..NZ Wildlife Service report”
363 1 Agency App. C “1080..measured in 5 of 8 eels which consumed muscle tissue..[was] 0.003-0.32mg/kg ..9 days after the last feed..low residues were measured in 1 of the 3 eels which had consumed contaminated gut”
363 2 Agency App. C “Crayfish were observed..consuming the baits..there were no mortalities [in 8 days..highest residues were] 3.3 mg/kg in viscera and 5mg/kg in tail muscle..7.1 mg/kg total concentration [viscera & muscle]was measured in a larger bodied crayfish 4 days after exposure”
363 3 Agency App. C “Concentrations in [freshwater crayfish] muscle decreased significantly  between days 4 and 8 (from mean ~1.2 mg/kg to ~0.2 mg/kg, data presented graphically only)”
364 1 Agency App. C “8 individuals of 3 species (long-finned eels)..koaro..upland bullies [held in cages in streams with 1080 baits in mesh bags 10 or 100m upstream or downstream]..3 cages..were stolen..mortalities [occurred] as a result of high mortalities could be attributed to [tissue] sampling was undertaken..the fish did not have access [to baits]..bullies and koaro it is unlikely they would consume baits..[eels were [not observed to consume baits when given access]”
472 4 Agency App. E “the expected number of baits deposited in a stream cannot be assessed from stream size or bait application rate”
705 1 Agency App. M “[In freshwater crayfish] tail muscle analysis gave ~ 1.5 mg/kg at Day 1 and ~0.25 mg/kg at Day 8, while for viscera analysis gave ~1.2 mg/kg at Day 1 and ~0.2 mg/kg at Day 8”
705 2 Agency App. M “If a child consumed [200g of contaminated koura] unacceptable risk level..might be possible”
706 1 Agency App. M “[calculations suggest] the risk from meat consumption for freshwater species may be higher than for terrestrial meat sources. The Agency considers this conclusion misleading. A prime aim of 1080 operations is to avoid deposition of baits into waterways”
707 2 Agency App. M “The highest plant tissue level [of 4 plants] reported was Day 3 in rye grass..Possibly this sampling time is a bit long after exposure, but it has been used in the absence of other data to reflect possible residues”
724 2 Agency App. N “No effects [on aquatic biota] are likely based on the number of baits that have been recorded falling into streams” (no consideration of small streams, ponds, 1080 loss during sample storage, poor data)
67 1 Applicants’ references “Acute toxicity to fish and aquatic invertebrates appears to be relatively low” (Fisher & Eason, 2003)
68 1 Applicants’ references “Data from aerial 1080 operations for the control of..possums in NZ show that estimates of the bait size and toxic concentration..derived from the mean parameters..will not be accurate” (Frampton et al., 1999)
99 1 Applicants’ references “We were certainly surprised to find that fingerling bream and bass would survive in 370 ppm for an indefinite period” (King & Penfound, 1946)
111 1 Applicants’ references “Wild-sourced eels were acclimatised for 21 days in a wet-laboratory before being exposed to 1080 [32 eels used in Trial 1 and 48 used in Trial 2]” (Lyver et al., 2004)
112 1 Applicants’ references “The detection of 1080 in the muscle of an eel 9 days after it last consumed possum gut tissue..suggests that the..excretion of sublethal doses..may be slower than in mammals and in-depth study should be undertaken..other scavenging aquatic fauna..also..should be considered” (Lyver et al., 2004)
192 2 Applicants’ references “The fact that detritus was also present in the cages suggested that pollard baits may [be a] more favourable food item to crayfish than detritus” (Suren & Bonnet, 2004)
193 1 Applicants’ references “The highest total concentration of 1080 found within a particular crayfish (7.7 mg kg -1) suggested that c. 80% of a pollard bait had been consumed by this is, however..possible that crayfish in natural streams would encounter more than one..bait..and consume them” (Suren & Bonnet, 2004)