Nitrite toxicity to crayfish, Astacus leptodactylus, the effects of sublethal nitrite exposure on hemolymph nitrite, total hemocyte counts, and hemolymph glucose

Ecotoxicology and Environmental Safety
Hijran Yavuzcan Yildiz, Aysel Caglan Karasu Benli

Abstract

The 48-h acute toxicity range of nitrite to narrow-clawed crayfish, Astacus leptodactylus was within 22 and 70 mg L(-1) (mean 29.43 mg L(-1)). Environmental chloride (100 mg L(-1) chloride) increased the 48-h toxicity of nitrite to a range of 31 and 80 mg L(-1) (mean 49.20 mg L(-1)). Hemolymph nitrite, total hemocyte counts (THCs), and hemolymph glucose were examined in A. leptodactylus exposed to different sublethal nitrite concentrations. The same parameters were also determined for A. leptodactylus exposed to different sublethal nitrite concentrations with additional environmental chloride. Additionally, hemolymph nitrite and THCs were analyzed for crayfish exposed to nitrite-free water after 24 h following a 48-h exposure to nitrite. In the nitrite-exposed tests, hemolymph nitrite increased directly with water nitrite; however, after recovery, nitrite in hemolymph decreased. In the nitrite plus chloride-exposed tests, the accumulation of nitrite in hemolymph was relatively low compared to the nitrite-exposed tests. Thus, hemolymph to environment ratios of nitrite in the nitrite-exposed tests were higher than those of nitrite plus chloride-exposed tests. THCs decreased following nitrite exposure and, in general, increased af...Continue Reading

Citations

Oct 12, 2012·Environmental Monitoring and Assessment·Iryna KuklinaPavel Kozák
May 9, 2012·Comparative Biochemistry and Physiology. Toxicology & Pharmacology : CBP·Jian-An XianShao-An Liao
May 7, 2011·Marine Environmental Research·Valerio MatozzoMaria Gabriella Marin
Oct 28, 2008·Comparative Biochemistry and Physiology. Toxicology & Pharmacology : CBP·Meiling HongNa Yu
Dec 30, 2016·Arhiv za higijenu rada i toksikologiju·A Çağlan Karasu BenliAylin Sepici Dinçel
May 20, 2021·Environmental Science and Pollution Research International·Aysel Çağlan GünalAylin Sepici Dinçel

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