title: Blood lactate loads of redthroat emperor Lethrinus miniatus associated with angling stress and exhaustive exercise.
abstract: Baseline, post-angling and maximum attainable blood lactate concentrations were measured for the fishery species redthroat emperor Lethrinus miniatus to gain insight into the condition of fish released following c. 30 s angling and <45 s air exposure. Mean ± S.D. baseline blood lactate was 1·5 ± 0·6 mmol l⁻¹, which increased and plateaued around 6 mmol l⁻¹ at 15-30 min post-angling. These values were significantly lower than those obtained from fish maximally exhausted with a prolonged chase and air exposure protocol following capture (10·9 ± 1·8 mmol l⁻¹), suggesting that L. miniatus is not maximally exhausted during standard angling practices.
authors.affiliation: AIMS@JCU, Townsville, Australia; Australian Institute of Marine Science, PMB No 3, Townsville, Australia; Centre for Sustainable Tropical Fisheries and Aquaculture, School of Earth and Environmental Sciences, James Cook University, Townsville, Australia.
authors.forename: L M
authors.initials: LM
authors.lastname: Currey
authors.forename: M R
authors.initials: MR
authors.lastname: Heupel
authors.forename: C A
authors.initials: CA
authors.lastname: Simpfendorfer
authors.forename: T D
authors.initials: TD
authors.lastname: Clark
mesh_terms: D000818:Animals; D001522:Behavior, Animal; D005221:Fatigue; D019344:Lactic Acid / Q000097:blood*; D010473:Perciformes / Q000097:blood* / Q000502:physiology; D013312:Stress, Physiological; D013550:Swimming
chemical_list: D019344:Lactic Acid
keywords: catch-and-release; fish; fisheries; post-release; stress physiology