Growth, cannibalism, and survival relations in larvae of European catfish, Silurus glanis (Actinopterygii: Siluriformes: Siluridae)—attempts to mitigate sibling cannibalism

Król, Jarosław; Flisiak, Wojciech; Urbanowicz, P.; Ulikowski, Dariusz

doi:10.3750/aip2014.44.3.03

Cited by 13 publications

(13 citation statements)

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“…For the first time, to our knowledge, our study described and analysed cannibalism focusing at an individual level. First, in our study, we counted the number of cannibals during the 5‐min period per tank, while in previous studies, the number of cannibals resulted in the difference between the initial and final numbers of individuals in the aquaria (i.e., Baras, Ndao et al, ; Kestemont et al, ; Król, Flisiak, Urbanowicz, & Ulikowski, ). Hence, in these cases, all disappeared larvae were considered as prey of a cannibal.…”

Section: Discussionmentioning

confidence: 99%

Intra-cohort cannibalism in early life stages of pikeperch

et al. 2019

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Cannibalism has been described in 390 teleost fish species belonging to 104 families. In rearing conditions, intra‐cohort cannibalism is one of the major bottlenecks during the early life stages of pikeperch (Sander lucioperca). This study aims to describe precisely the occurrence and the onset of cannibalism of this species during the first two post‐hatching months. In a first step, the cannibalistic behaviour was analysed through observations in three experiments. In each experiment, the number of cannibalistic cases was similar. From 14 to 48 days post‐hatching (dph), more than 60 % of prey ingestions were realized by tail‐first, but after 48 dph, the number of prey ingestions by head‐first increased. In a second step, the behavioural sequence exhibited to attack and to capture a conspecific was analysed, taking into account the size ratio between the cannibal and its prey. The behavioural sequence to capture was always the same, similar to a predatory sequence and it seems that the cannibal chose its prey about 10 s before attacking. Moreover, prey choice by a cannibal was based more on the size ratio between the cannibal and its prey than the previous activity of the potential prey. These new results could lead to solutions to decrease cannibalism in pikeperch rearing.

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Section: Discussionmentioning

confidence: 99%

Intra-cohort cannibalism in early life stages of pikeperch

et al. 2019

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“…Hoglund, Sorensen, Bakke, Nilsson, & Øverli, 2007 also revealed that L-tryptophan reduce cannibalism and stress induced anorexia in juvenile grouper and Lepage, Vilehez, Pottinger and Winberg, (2003) showed that it prevents stress induced cortisol surge. In contrast, Krol, Flisiak, Urbanowicz, and Ulikowski, (2014) reported that the tryptophan supplementation had no significant effect on growth or survival of Silurus glanis.…”

Section: Discussionmentioning

confidence: 82%

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Biswas¹,

Patel²,

Saha³

2018

Turk. J. Fish. Aquat. Sci.

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A 30-days experiment was conducted to evaluate the efficacy of four chemo-attractants viz. DL-alanine, betaine, Ltryptophan (TRP) and inosine monophosphate (IMP) in the diet of Ompok bimaculatus during fry rearing. Fifty numbers of fifteen days weaned fry (0.0739±0.008 g; 2.32±0.06 cm) were stocked into each aerated aquariums (30.0 x 15.0 x 15.0 cm) following a completely randomized design (CRD) consisting of five treatments including control with three replicates each. Five iso-nitrogenous purified diets were prepared including four treatment diets with attractants (2%) replacing the cellulose and fed to the fishes twice a day. The highest growth was observed in the treatment fed with betaine supplemented diet followed by inosine monophosphate whereas, no significant difference was observed among control, DL-alanine and Ltryptophan supplementation. The highest survivability was found in L-tryptophan supplemented diet (48.66±2.4%) followed by betaine, DL-alanine, control and lowest was found in inosine monophosphate treatment (32.00±2.0). It has also observed that there was significant difference (P>0.05) in survival between L-tryptophan and betaine supplemented diets fed groups. It is concluded that the dietary tryptophan supplementation could be a promising aquaculture management strategy for carnivorous fish as it showed significantly better survival without affecting the growth.

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“…In the aforementioned study, final survival of the pikeperch was lower than in the present study and ranged from 17.7 to 15.3 % for the ones weaned on day 12 post-hatch and on day 19 post-hatch, respectively. No significant effect of TRP supplementation on the survival in the orange-spotted grouper (Hseu et al 2003) and European catfish Silurus glanis (Król et al 2014) was found. Compared with survival obtained in the other, previous studies will be pointless because usually TRP effect on aggressive behavior was tested in juvenile fish (not in the larvae or post-larvae as here) or in non-obligate carnivores taxa, e.g., rainbow trout, and sometimes the aspect of survival was beyond the scope of these studies (Winberg et al 2001;Höglund et al 2005;Wolkers et al 2014).…”

Section: Discussionmentioning

confidence: 96%

Effect of dietary l-tryptophan on cannibalism, survival and growth in pikeperch Sander lucioperca (L.) post-larvae

Król

Zakęś

2015

Aquacult Int

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The effect of supplemented commercial diets with crystalline L-tryptophan 10 and 20 g TRP kg -1 ) on cannibalism, survival and growth parameters of pikeperch postlarvae (Sander lucioperca) was evaluated. Fifteen-day-old pikeperch larvae (mean weight-6.8 mg) were reared during the next 28 days (20.5°C, 16L:8D) in glass aquaria in a recirculating aquaculture system. The enzyme-linked immunosorbent assay showed that TRP-supplemented diets were effective in increasing the levels of serotonin (5-HT) in the body tissue of pikeperch. TRP supplementation resulted in a slight decrease in both types of cannibalism, although the reduction in cannibalism impact did not amount to more than a few percent. TRP treatment had no significant influence on the final survival of pikeperch post-larvae (ranged from 20.1 ± 12.4 to 29.0 ± 12.9 %). However, contrary to the earlier studies conducted on other fish species, no significant difference in the growth rates and feeding behavior of pikeperch between TRP-fed and control group were found. The final body weight and growth rate ranged from 0.211 ± 0.014 to 0.243 ± 0.016 and from 12.19 ± 0.38 to 12.76 ± 0.35 % day -1 , respectively. To our knowledge, this is the first study reporting the effects of TRP supplementation on the cannibalism-survival-growth relations in fish in the post-larval stage.

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Growth, cannibalism, and survival relations in larvae of European catfish, Silurus glanis (Actinopterygii: Siluriformes: Siluridae)—attempts to mitigate sibling cannibalism

Cited by 13 publications

References 49 publications

Intra-cohort cannibalism in early life stages of pikeperch

Intra-cohort cannibalism in early life stages of pikeperch

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Effect of dietary l-tryptophan on cannibalism, survival and growth in pikeperch Sander lucioperca (L.) post-larvae

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