Cost of growth in larval and juvenile African catfish (Clarias gariepinus) in relation to growth rate, food intake and oxygen consumption

Conceição, Luı́s E.C.; Dersjant-Li, Y.; Verreth, J.A.J.

doi:10.1016/s0044-8486(97)00260-3

Cited by 88 publications

(61 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In some individuals these costs are additive, and in others when fish grow at maximal rates the costs of maintenance (FAST metabolic rate) are partly suppressed, creating additional scope for growth. The occurrence of such non-additive for the energetic costs of maintenance and growth has been previously suggested for other fish species (Rombough, 1994;Conceição et al, 1998). It would be interesting to verify to what extent these proposed different strategies to accommodate the energetic costs of maintenance and growth correlate with the different coping styles recently suggested for Senegalese sole (Silva et al, 2010).…”

Section: Discussionmentioning

confidence: 72%

Daily oxygen consumption rhythms of Senegalese sole solea senegalensis (Kaup, 1858) juveniles

Castanheira

Martins

Engrola

et al. 2011

Journal of Experimental Marine Biology and Ecology

View full text Add to dashboard Cite

Senegalese sole is known to be a species with pronounced nocturnal feeding behaviour. However, as for most fish species, there is a lack of knowledge concerning the influence of such biological rhythm on metabolic rate. The aim of this study was to determine whether individual variation in routine and fed metabolic rate was affected by daily light-dark rhythms in juveniles of Senegalese sole. The individual oxygen consumption measurements in Senegalese sole juveniles were determined by flow-through respirometry, at fasted conditions and after the fish were fed a single meal, the meal time started at 0930 h and fish fed ad libitum for 30 min. The measurements were made during 22 h, of which 8 h was in the light and 14 h in the dark, and started immediately after transfer to the respiratory chambers at 1100 h. The results suggest an influence of light-dark cycles in routine metabolism. It was observed that oxygen consumption increased during the dark phase in fasted fish (FAST) but was higher during the light phase in fed fish (FEED). However, when feed is provided during the light phase, juveniles are capable of shifting oxygen consumption rhythms to respond to the energetic demands of digestion and growth. These results suggest that routine metabolism varies according to the species natural habits as Senegalese sole is known to be nocturnal. The findings of this study underline the importance of understanding the biological rhythms of the species under study before metabolic data are interpreted.

show abstract

Section: Discussionmentioning

confidence: 72%

Daily oxygen consumption rhythms of Senegalese sole solea senegalensis (Kaup, 1858) juveniles

Castanheira

Martins

Engrola

et al. 2011

Journal of Experimental Marine Biology and Ecology

View full text Add to dashboard Cite

show abstract

“…After this time the relative food ingestion rate decreases. This decrease has been observed to continue during the juvenile stage of African catfish from 27.9% of their body weight at a size of 0.8 g to 6.2% in fish of 37.7 g (Hogendoorn 1983;Conceição et al 1998). The pattern for gut evacuation rate was similar to that for food consumption, increasing during the first days of exogenous feeding and decreasing as fish growth continued (Table 5).…”

Section: Gut Evacuation and Food Consumptionmentioning

confidence: 62%

“…In assessment of daily food consumption and gut evacuation rates in the larval stages of fish, the high growth rate achieved during the first days of exogenous feeding must be considered. The larvae of C. gariepinus have higher growth rates and food conversion efficiency than the larvae of other fish species (Wieser and Medgyesy 1990;Keckeis and Schiemer 1992;Conceição et al 1998). Within the same day and from one meal to the next the fish is growing fast, consequently the gut size rapidly increases and more capacity to store food becomes available.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Laboratory investigation of daily food intake and gut evacuation in larvae of African catfish Clarias gariepinus under different feeding conditions

et al. 2008

View full text Add to dashboard Cite

Temporary accumulation of ascorbic acid 2-sulfate (AAS) was measured to estimate food intake and gut evacuation in larvae of African catfish. Fish larvae were fed decapsulated cysts of Artemia containing AAS. In a first experiment it was found that no biosynthesis of AAS occurs in the larvae of this species. In a second experiment, the gut contents of the fish larvae fed were calculated as they changed during development. In a third experiment, the gut evacuation rate of fish larvae was determined during continuous and discontinuous feeding regimes in the first five days after the start of exogenous feeding. Food consumption by catfish larvae increased from 46.5% of their body dry weight (BDW) on day 1 after the start of exogenous feeding to 53.8% BDW on day 3. Thereafter, food consumption decreased to 27.8% BDW on day 5. A similar pattern was observed for gut evacuation, which increased during the first days of exogenous feeding and decreased as fish growth continued. The rate of gut evacuation in a continuous feeding regime was significantly higher (P \ 0.05) than that under discontinuous feeding. On day 1 post-hatch and 7 h after first food ingestion the fish larvae evacuated 87% of the food in continuous DOI 10.1007/s10499-008-9230-6 feeding compared with 43% under discontinuous feeding. It was found that gut emptying differs during larval development. Under continuous feeding, on days 1 and 3 post-hatch and 11 h after the first meal 90% of the food was evacuated compared with 71% evacuated on day 5. The advantages and limitations of the AAS method for estimation of food consumption by fish larvae are discussed.

show abstract

“…A strong SDS effect could possibly drive all fish to maximize their individual capacity to express these behavioral traits, since the larger they get the safer and more competitive they are. Indeed, some studies indicate that young fish are maximizing growth with little capability to increase their foraging efforts (Pedersen 1997;Conceição et al 1998;Peck et al 2014). In contrast to many previous studies, we standardize acute hunger levels, to measure effects of energetic state only.…”

Section: Introductionmentioning

confidence: 99%

Untitled

Supplemental Information 1: Supplementary Material

View full text Add to dashboard Cite

PrePrintsAbstract Animals generally adjust their behavior in response to bodily state (e.g. size and energy reserves) to optimize energy intake in relation to mortality risk, weighing predation probability against starvation. Here we investigated whether brown trout adjust their behavior in relation to feeding history (energetic status) and body size during a major early-life selection bottleneck, when fast growth also appear to be important. We manipulated growth using different food ration schemes over two consecutive time periods (P1 = 12 days, P2 = 23 days), excluding social effects through individual isolation. During these experimental periods the fish were fed either high or low food rations in a crossed design. In behavioral trials following the treatment, where acute hunger levels were standardized among all treatments, fish that were initially fed high rations (P1) and thereafter low rations (P2) had on average 15-21% higher swimming activity than the other groups, but large within-treatment variation rendered only weak statistical support for the effect. Furthermore, fish on low ration during P2 tended to be more aggressive than fish on high ration. Size was related to behavioral expression, with larger fish being more active and aggressive. Swimming activity and active aggression were positively correlated, forming a behavioral syndrome in the studied population. Based on these behavioral traits we could also distinguish two behavioral clusters, one consisting of more active and aggressive individuals, and the other consisting of less active and aggressive individuals. This indicates that two behavioral strategies may exist in young brown trout.

show abstract

Cost of growth in larval and juvenile African catfish (Clarias gariepinus) in relation to growth rate, food intake and oxygen consumption

Cited by 88 publications

References 22 publications

Daily oxygen consumption rhythms of Senegalese sole solea senegalensis (Kaup, 1858) juveniles

Daily oxygen consumption rhythms of Senegalese sole solea senegalensis (Kaup, 1858) juveniles

Laboratory investigation of daily food intake and gut evacuation in larvae of African catfish Clarias gariepinus under different feeding conditions

Untitled

Contact Info

Product

Resources

About