Open AccessEffect of Temperature on Acute Toxicity of Nitrite to Meagre, Argyrosomus regius (Asso, 1801)
Author(s) -
Kir Mehmet,
Topuz Havva,
Sunar Murat Can,
Topuz Mustafa
Publication year - 2015
Publication title -
journal of the world aquaculture society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.655
H-Index - 60
eISSN - 1749-7345
pISSN - 0893-8849
DOI - 10.1111/jwas.12214
Subject(s) - biology , nitrite , juvenile , aquaculture , zoology , fishery , fish <actinopterygii> , ecology , nitrate
Meagre, Argyrosomus regius , is a candidate marine fish species for aquaculture diversification, presenting a high economic value in the Mediterranean. Tolerance of juvenile meagre to nitrite ( NO 2 ‐N) was determined relating to temperature. Fish (3.2 ± 0.6 g and 5.4 ± 0.9 cm) were exposed to different NO 2 ‐N concentrations in a series of acute toxicity tests by the static renewal method at three temperatures (18, 22, and 26 C) at a pH of 8.0. Low temperature clearly increased tolerance to NO 2 ‐N ( P < 0.05). The 96‐h median lethal concentration ( LC 50 ) values of NO 2 ‐N were 177.63, 139.55, and 49.61 mg/L, at 18, 22, and 26 C, respectively. The safe levels of NO 2 ‐N for juvenile meagre were estimated to be 17.7, 13.9, and 4.9 mg/L at 18, 22, and 26 C, respectively ( P < 0.05). This study indicates A. regius is more sensitive to nitrite than other marine fish species cultured in the Mediterranean.