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Jen McIntyre, New science documenting toxic impacts on salmon and other aquatic species
- 6. Adult coho pre-spawn mortality study 2015
โขโฏ What(is(the(pathophysiology(of(
coho(preXspawn(mortality?(
โขโฏ Hematology,(blood(chemistry(
โขโฏ Are(other(salmon(spawners(as(
sensi[ve(as(coho?(
โขโฏ Coho(vs(chum(
Goals(of(2015(Field(Season(
- 11. โขโฏ Behavioural(
โขโฏ Increased(gilling(
โขโฏ Surface(gaping(
โขโฏ Hematological(
โขโฏ !(HCT((Higher(RBC(counts(/(cell(swelling)(
โขโฏ Metabolic(acidosis((low(pH,(low(bicarb,(base(de๏ฌcit)(
โขโฏ Lactate(produc[on((anaerobic(cellular(respira[on)(
Evidence for Hypoxia in Adult Coho
- 14. Coho and chum exposures 2015
coho(
coho(
chum(
chum(
coho(
coho(
chum(
chum(
coho(
coho(
chum(
chum(
coho(
coho(
chum(
chum(
Each(storm:(
โขโฏ 4(coho(control(
โขโฏ 4(coho(runo๏ฌ(
โขโฏ 4(chum(control(
โขโฏ 4(chum(runo๏ฌ(
Total(of(5(storms(
SubXlethal(endpoints:(
โขโฏ Blood,([ssues((chemistry(+(qPCR)(
โขโฏ Monitored(temp,(DO,(pH,(conduc[vity(every(30(min(
โขโฏ Fish(behavior(assessed(every(30(min(star[ng(at(1(h(
โขโฏ Euthanized(if(showing(symptoms(
โขโฏ Control(sacri๏ฌced(for(every(runo๏ฌ(๏ฌsh(
โขโฏ Max(exposure(4(h(
- 17. Are chum as vulnerable as coho?
0(
1(
2(
3(
4(
5(
Coho( Chum(
Control(
Runo๏ฌ(
Chum(did(not(develop(preXspawn(mortality(behavioral(symptoms(
surfacing(
Symptom)Severity)(0K5))at)4)h)
immobile(
rolling(
normal(
mild(
medium(
lethargy(
- 20. 1 stack / treatment
3 trays / stack
9 cups / tray
100 eggs / cup
Control50% 100% 100% Filtered
4 treatments
Background: Flowing clean water
Exposures: 48 h recirculated runoff
10%
Episodic exposure of coho embryos
- 26. Embryo episodic exposure summary
50X100%(Runo๏ฌ(
(
โขโฏ Smaller(eyes(and(developmental(delay(
โขโฏ High(mortality(for(exposures(postXhatch(
(
100%(Filtered(
(
โขโฏ Some(indica[on(of(slight(eye(e๏ฌect(
โขโฏ No(mortality(vs(controls(
- 34. Upcoming projects runoff impacts to salmon
Rela[ve(species(sensi[vity(
โขโฏ Tes[ng(addi[onal(species((O.#mykiss)(
Coho(preXspawn(mortality(
โขโฏ Uncover(primary(source(of(hypoxia(
โขโฏ Phenotypic(anchoring(of(physiology(to(behaviour(in(
coho(
โขโฏ Valida[ng(juvenile(salmon(as(a(model(of(adult(preX
spawn(mortality(