Mass produced nematodes Panagrellus redivivus as live food for rearing carp larvae: preliminary results

Schlechtriem, Christian; Ricci, Manuele; Focken, Ulfert; Becker, Klaus

doi:10.1111/j.1365-2109.2004.01049.x

Cited by 28 publications

(31 citation statements)

References 12 publications

(14 reference statements)

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“…(2007) determined through the stable isotope techniques that the microbial biofilm composed by nematodes, diatoms, filamentous cyanobacteria and ciliate may contribute to around 49% of the carbon and 70% of the nitrogen responsible for F. paulensis juveniles growth. In the present work, only a small number of diatoms and nematodes, which are considered important nutritional sources for shrimp (Schlechtriem et al. 2004, 2005; Ballester et al.…”

Section: Discussionmentioning

confidence: 99%

Effect of practical diets with different protein levels on the performance ofFarfantepenaeus paulensisjuveniles nursed in a zero exchange suspended microbial flocs intensive system

Ballester¹,

Abreu²,

Cavalli³

et al. 2010

Aquaculture Nutrition

223

134

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Farfantepenaeus paulensis juveniles (72 ± 24 mg), were reared in a suspended microbial flocs system and fed practical diets containing increasing amounts of crude protein (250, 300, 350, 400 and 450 g kg−1 CP). Development of microbial flocs was promoted by high aeration rates and fertilization with wheat bran and molasses. Flocs were composed of detritus in the form of flocculated matter colonized by heterotrophic bacteria, cocoid and filamentous cyanobacteria, flagellate and ciliate protozoa and rotifers. Proximate composition analysis of the suspended microbial floc showed CP levels of 304 g kg−1. After 45 days, mean shrimp survival were above 89%, with no significant differences between treatments. Shrimp fed diets with 350 g kg−1 or higher CP content achieved significant higher (P < 0.05) final weight (0.66–0.68 g), weight gain (0.58–0.61 g) and instantaneous growth rate (0.049–0.050), with feed conversion rates (2.17–2.30) significantly lower (P < 0.05). Results show that, when rearing is carried out in a suspended microbial flocs system, dietary CP levels can be kept at 350 g kg−1. Furthermore, results confirm that microbial‐based systems allow shrimp culture without compromising the surrounding environment and shows the possible reduction of production costs and fish meal dependence.

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Section: Discussionmentioning

confidence: 99%

Effect of practical diets with different protein levels on the performance ofFarfantepenaeus paulensisjuveniles nursed in a zero exchange suspended microbial flocs intensive system

Ballester¹,

Abreu²,

Cavalli³

et al. 2010

Aquaculture Nutrition

223

134

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show abstract

“…Aquaria were aerated while fresh well water was introduced at 100 ml/min. Once the eggs hatched, Artemia naupli, a food item for larval carp (Schlechtriem et al 2004), was supplied to each aquarium on a daily basis. Egg viability was estimated by counting the number of eggs that hatched into larvae, while larval survival was determined by counting the number of surviving larvae 2 weeks later.…”

Section: Determining Egg Viability Survival and Propagule Pressurementioning

confidence: 99%

Recruitment and abundance of an invasive fish, the common carp, is driven by its propensity to invade and reproduce in basins that experience winter-time hypoxia in interconnected lakes

2009

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Although the common carp is globally distributed, it only reaches extreme densities in certain regions. We hypothesized that this phenomenon might be linked to recruitment bottlenecks which carp overcome where environmental conditions create unstable peripheral areas that it can access for spawning and nursery habitat. To test this hypothesis, the abundance, movement and reproductive success of carp was determined in two systems of inter-connected lakes in the North American Midwest whose shallow basins frequently experience winterhypoxia ('winterkill'). Radio-tracking demonstrated that while adult carp overwinter in deep lakes that do not winterkill, they aggressively move into winterkill-prone shallow regions in the spring to spawn. The significance of this behavior was demonstrated by ageing analyses which found that carp recruit only in interconnected shallow lakes and then only in years following severe winter hypoxia. Presumably this strategy allows carp to exploit nursery habitat that is relatively free of predators. It likely evolved in response to seasonally variable conditions in the carp's native habitat in the Ponto-Caspian region. This life history may also explain the carp's abundance in other unstable regions such as southern Australia and could potentially be exploited to control this damaging invasive.

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“…In aquaculture, the larvae of some fish species are fed routinely with meiobenthic organisms (rotifers or Artemia eggs) until they are able to accept fish pellets. In the last few years, efforts have been made to use nematodes as a food source for fish larvae (Ricci et al, 2003;Schlechtriem et al, 2004Schlechtriem et al, , 2005Honnens & Ehlers, 2013).…”

mentioning

confidence: 99%

Consumption and prey size selection of the nematode Caenorhabditis elegans by different juvenile stages of freshwater fish

Weber

Traunspurger

2014

Nematol

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Meiofauna, and nematodes in particular, play an essential role in the diet of certain juvenile freshwater fish. However, the specific consumption and prey size selection of fishes on nematodes is largely unrecognised. In this study, the effects of different juvenile stages of widely distributed common European freshwater fish, gudgeon (Gobio gobio), roach (Rutilus rutilus), ninespine stickleback (Pungitius pungitius), and two strains of common carp (Cyprinus carpio (scaled) and C. carpio (mirror)), on abundances of the nematode Caenorhabditis elegans were investigated in controlled laboratory experiments with a known number of prey. Gudgeon, carp (scaled), and carp (mirror) consumed significant amounts of nematodes, whereas the roach and ninespine stickleback did not. Both strains of common carp reduced nematode abundance dependent on the size of the fish, with smaller fish causing a greater reduction than medium-size or large fish, although fish of all sizes fed significantly on nematodes of all size classes (<0.5, 0.5-1.0 and >1.0 mm). While the gudgeon also reduced nematode abundance dependent on the size of the fish, with increasing body length there was a dietary shift towards larger nematode size classes (0.5-1.0 and >1.0 mm). Morphometric analysis of the branchial basket indicated that the mesh width of gudgeon and both strains of common carp, but not of roach and ninespine stickleback, is suitable for feeding on specific size classes of nematodes. Together, the results showed that nematodes are used as a food source for different juvenile stages of certain species of freshwater fish.

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Mass produced nematodes Panagrellus redivivus as live food for rearing carp larvae: preliminary results

Cited by 28 publications

References 12 publications

Effect of practical diets with different protein levels on the performance ofFarfantepenaeus paulensisjuveniles nursed in a zero exchange suspended microbial flocs intensive system

Effect of practical diets with different protein levels on the performance ofFarfantepenaeus paulensisjuveniles nursed in a zero exchange suspended microbial flocs intensive system

Recruitment and abundance of an invasive fish, the common carp, is driven by its propensity to invade and reproduce in basins that experience winter-time hypoxia in interconnected lakes

Consumption and prey size selection of the nematode Caenorhabditis elegans by different juvenile stages of freshwater fish

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