Premium
Response of juvenile tench Tinca tinca (L.) to the anaesthetic 2‐phenoxyethanol
Author(s) -
Myszkowski L.,
Kamiński R.,
Wolnicki J.
Publication year - 2003
Publication title -
journal of applied ichthyology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.392
H-Index - 62
eISSN - 1439-0426
pISSN - 0175-8659
DOI - 10.1046/j.1439-0426.2003.00460.x
Subject(s) - juvenile , fish <actinopterygii> , biology , zoology , toxicology , juvenile fish , fishery , ecology
Summary The response of tench Tinca tinca aged 40–171 days post‐hatch (22–49 mm TL) to the anaesthetic 2‐phenoxyethanol was studied at 25°C. The lowest effective concentration of 2‐phenoxyethanol increased with age, while the highest safe concentration decreased. The fish aged 40 days post‐hatch required a significantly (P ≤ 0.05) shorter time to become anaesthetized than did older fish. The recovery time after 15 min of exposure to 2‐phenoxyethanol at 0.45 g dm −3 was significantly shorter in the 40‐day‐old fish than in older fish. In juveniles of the same age, induction time or recovery time did not depend on their size or condition (Fulton's coefficient). At 25°C, 2‐phenoxyethanol at 0.5 g dm −3 may be used to efficiently and safely anaesthetize T. tinca juveniles.