Fin condition in intensively cultured Eurasian perch (<i>Perca fluviatilis</i>)

Stejskal, Vlastimil; Policar, T.; Křišťan, Jiří; Kouřil, J.; Hamáčková, J.

doi:10.25225/fozo.v60.i2.a6.2011

Cited by 21 publications

(18 citation statements)

References 17 publications

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“…Damaged fin condition is a regular phenomenon associated with intensive fish farming (Latremouille, ). It has been recorded, for example, in rainbow trout ( Oncorhynchus mykiss ; St‐Hilaire et al., ; Ellis et al., ), salmon ( Salmo salar ; Jones et al., ), perch (Stejskal et al., ), sea bass ( Dicentrarchus labrax ; Person‐Le Ruyet and Le Bayon, ), cod ( Gadus morhua ; Hatlen et al., ), and many others, and is usually a result of bacterial infection and/or aggressive behaviour of fish cultured at high densities (e.g. Jobling et al., ).…”

Section: Discussionmentioning

confidence: 99%

Processing traits of European catfish (Silurus glanis Linnaeus, 1758) from outdoor flow-through and indoor recycling aquaculture units

et al. 2015

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The quality of fish cultured using recycling units may differ from that of fish from outdoor farming units due to a range of deviating environmental determinants. This applies not only to flesh quality but also to morphological (processing) traits. This study evaluates processing yields of sibling fish cultured in two different farming units: (i) an outdoor pond aquaculture system with a flow-through regime (24.6 AE 0.2°C ), and (ii) indoor tanks using a recirculation aquaculture system (RAS; 26.0 AE 1.0°C). Clear differences were observed in the most important processing traits, i.e. skinned trunk and fillet yields, which were both significantly higher (P < 0.01) in RAS fish due to significantly smaller (P < 0.05) head weight in fish of the flow-through system. Skin represented a significantly higher (P < 0.01) proportion of total weight in both RAS males and females. The most obvious difference was in the deposited fat weight, which was significantly higher (P < 0.01) in RAS fish. Visceral fat deposits were significantly higher (P < 0.01) in females and ventral and dorsal fat deposits higher (P > 0.05) in males.

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Section: Discussionmentioning

confidence: 99%

Processing traits of European catfish (Silurus glanis Linnaeus, 1758) from outdoor flow-through and indoor recycling aquaculture units

et al. 2015

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“…On 21 June and 06 November (midsummer and 138 days after midsummer), 100 fish per tank were anaesthetized with 0.03 ml/l clove oil, and total body length, standard length, and length of fins were measured to 1 mm to calculate relative fin length (RFL). As an indicator of overall degree of fin damage, we calculated the TRFL, which represents the ratio of the total length of all fins to the total length of the body (Stejskal, Policar, Kristian, Kouril, & Hamackova, ).

italicRFL = italicTFL / italicSL \times 100

…”

Section: Methodsmentioning

confidence: 99%

The effects of a prolonged photoperiod and light source on growth, sexual maturation, fin condition, and vulnerability to fungal disease in brook troutSalvelinus fontinalis

et al. 2018

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The effects of an artificially prolonged photoperiod on growth, survival rate, colouration, and sexual maturation in brook trout Salvelinus fontinalis during pre-and post-spawning periods from 21 June to 06 November were investigated. Fish of mean initial weight~150 g were reared at ambient photoperiod as well as with an artificially prolonged photoperiod produced by either a light-emitting diode or a metal-halide light. The fish groups subjected to a prolonged period of artificial light grew significantly larger and had a higher survival rate (p < 0.05), regardless of sex, and showed lower occurrence of fungal disease compared to controls reared in the natural photoperiod. We found a significantly higher number of sexually mature fish in the control groups compared with experimental groups. The increased photoperiod effectively delayed gonad development and increased somatic growth in both male and female brook trout, and also increased resistance to fungal disease. The increased photoperiod produced an observable difference in fish colouration, with control groups exhibiting more intensive spawning colouration.

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“…Other fins showed normal development. In intensively reared salmonids and percids, pectoral and ventral fins are affected (Fragkoulis et al., ; Policar et al., ; Stejskal, Policar, Křišťan, Kouril, & Hamackova, ). It is presumed that fin ray curvature in percids and salmonids is related to intraspecific aggression.…”

Section: Nutritional Composition Of Biomar Feed (Manufacturer's Data)mentioning

confidence: 99%

Prevalence of deformities in intensively reared peled Coregonus peled and comparative morphometry with pond‐reared fish

Stejskal

Matoušek

Sebesta

et al. 2017

Journal of Fish Diseases

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Fin condition in intensively cultured Eurasian perch (Perca fluviatilis)

Cited by 21 publications

References 17 publications

Processing traits of European catfish (Silurus glanis Linnaeus, 1758) from outdoor flow-through and indoor recycling aquaculture units

Processing traits of European catfish (Silurus glanis Linnaeus, 1758) from outdoor flow-through and indoor recycling aquaculture units

The effects of a prolonged photoperiod and light source on growth, sexual maturation, fin condition, and vulnerability to fungal disease in brook troutSalvelinus fontinalis

Prevalence of deformities in intensively reared peled Coregonus peled and comparative morphometry with pond‐reared fish

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