The effect of fish size and stocking density on the weaning success of pond-cultured pikeperch Sander lucioperca L. juveniles

Policar, T.; Stejskal, Vlastimil; Křišťan, Jiří; Podhorec, Peter; Svinger, Viktor W.; Bláha, Martin

doi:10.1007/s10499-012-9563-z

Cited by 53 publications

(30 citation statements)

References 34 publications

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“…Due to species-dependent morphological differences, the variability of dimensions during ontogeny and behaviour typical of a given species, diverse mathematical models are applied. The most commonly used models include those based on direct measurements of total length (TL) of cannibals and their prey or models based on such parameters as mouth width (MW), mouth gape (MG), body depth (BD) of a prey, head depth (HD) of a prey and head width (HW) of a prey (Folkvord and Otterå 1993;Baras and Dalmeida 2001;Hseu 2002;Kailasam et al 2002;Kestemont et al 2003;Hseu et al 2003b;Fessehaye et al 2005;Wallat et al 2005;Hseu et al 2007;Policar et al 2013;Baras et al 2014;Hseu and Huang 2014;Ribeiro and Qin 2015).…”

Section: Size-sortingmentioning

confidence: 99%

Intracohort cannibalism and methods for its mitigation in cultured freshwater fish

Naumowicz

Pajdak

Terech-Majewska

et al. 2017

Rev Fish Biol Fisheries

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Cannibalism is a common phenomenon that occurs in over 30 fish families. Most of the species are valuable objects of aquaculture and cannibalism is highly undesirable. Cannibalism is an aggressive behaviour, which can be caused by stress induced by various population and environmental factors and can occur in two main forms: early larval and late juvenile (or adult). Each of these forms can lead to severe losses of stock. Losses are caused not only by fish eating each other, but also by an increase in the number of infections (the result of body surface damage). It is important to understand the phenomenon of cannibalism in order to properly prevent, diagnose and reduce it. The main aim of this study was to present and examine some of the well-examined methods of cannibalism mitigation. Most of the methods consist of creating rearing conditions similar to natural conditions and to reduce stress. Moreover, because of large interspecies differences, similar methods can result in different effects depending on the species. Additional studies are needed to better understand the biology of each cultured species with particular emphasis on the impact of domestication, as well as to improve fish rearing conditions.

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Section: Size-sortingmentioning

confidence: 99%

Intracohort cannibalism and methods for its mitigation in cultured freshwater fish

Naumowicz

Pajdak

Terech-Majewska

et al. 2017

Rev Fish Biol Fisheries

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“…The advantages of the pond culture system are: natural food, rapid fi sh growth, high-quality of produced juveniles, low production cost, elimination of abnormal fi sh, environmentally friendly and sustainable fi sh production without any fi sh deformity. RAS provides controlled and stable production conditions throughout year resulting in rapid growth rate and thus shorter production cycle of marketable fi sh (Stejskal et al 2010 ;Policar et al 2013 ). Currently, the greatest limitation of this system for perch rearing is only one batch production per year, when initial pond culture of this system is possible to carry out during later spring or summer period.…”

Section: Semi-intensive Perch Farming Using the Combination Of Pond Amentioning

confidence: 99%

Culture Methods of Eurasian Perch During Ongrowing

Policar

Samarin

Mélard

2015

Biology and Culture of Percid Fishes

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Three different production systems are used for perch ongrowing: (1) traditional extensive polyculture system, (2) semi-intensive culture farming and (3) intensive perch farming under RAS (Recirculating Aquaculture System(s)). Extensive and semi-intensive culture systems have many production limitations. Therefore, intensive perch farming has been developed in Europe for more continuous and predictive marketable perch production.Marketable perch production under RAS is affected by several main factors of production system. Optimal value and condition of each factor for stable and maximal perch production under RAS are described and recommended in details in this chapter.Overall, white, grey and black tank walls with light regime 12L:12D or 18 L:8D and light intensity 200-1,100 lx create optimal light conditions for intensive ongrowing perch culture. Freshwater or water with salinity under 4 ‰ with temperature 22-24 °C, oxygen saturation around 60-72 % and very low ammonia (below 0.3 mg N-NH 3 · L −1 ) and nitrite (below 0.5 mg NO 2 − · L −1 ) concentrations are optimal conditions for intensive perch production. Disturbance (cleaning of tanks, fi sh size-sorting etc.) must be reduced at minimum level for providing of maximal production which is the highest under optimal fi sh biomass from 10 to 20 kg · m −3 for 10 g perch to 60-70 kg · m −3 for 150 g perch under RAS.

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“…At present, S. lucioperca is being domesticated and is commercially fished. Moreover, it is predicted that the production of marketable S. lucioperca with intensive culture will increase due to its excellent flesh quality, high growth rate, good market value (Blecha et al, 2016), suitability for intensive culturing (Wang et al, 2009;Szczepkowski et al, 2011) and, especially, to the decrease in the numbers of fish in wild populations and in catches, which have reduced by over 50% during the past 30-40 years (Policar et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Characterization of the gut microbiota in early life stages of pikeperch Sander lucioperca

Dulski

Zakęś

Ciesielski

2017

Journal of Fish Biology

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This study characterized the gastrointestinal microbiome of nine juvenile farmed pikeperch Sander lucioperca using a metagenomics approach based on bacterial 16S rRNA gene sequencing. Potential changes in the gut microbiota during 2 months of S. lucioperca juvenile life were investigated. Results revealed that gut microbiota was dominated by Proteobacteria (95-92%), while other phyla Firmicutes (1-1·5%) and Actinobacteria (0·9-1·5%) were less abundant. At the family level, fish-gut microbiota were dominated by Enterobacteriaceae, which constituted c. 83% of all DNA sequence reads. Such a situation was present in all of the examined fish except one, which showed a different proportion of particular microbial taxa than the other fish. In this fish, a higher relative abundance (%) of Fusobacteria (21·0%), Bacteroidetes (9·5%) and Firmicutes (7·5%) was observed. There were no significant differences in the gut microbiome structure at different stages of development in the examined fish. This may indicate that Proteobacteria inhabiting the gut microbiota at an early stage of life are a necessary component of the pikeperch microbiome that may support proper nutrition of the fish. The information obtained on the gut microbiome could be useful in determining juvenile S. lucioperca health and improving rearing conditions by welfare monitoring in aquaculture.

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The effect of fish size and stocking density on the weaning success of pond-cultured pikeperch Sander lucioperca L. juveniles

Cited by 53 publications

References 34 publications

Intracohort cannibalism and methods for its mitigation in cultured freshwater fish

Intracohort cannibalism and methods for its mitigation in cultured freshwater fish

Culture Methods of Eurasian Perch During Ongrowing

Characterization of the gut microbiota in early life stages of pikeperch Sander lucioperca

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