The effects of feeding on the swimming performance and metabolic response of juvenile southern catfish, Silurus meridionalis, acclimated at different temperatures

Pang, Xu; Cao, Zhen-Dong; Peng, Jiang-Lan; Fu, Shi‐Jian

doi:10.1016/j.cbpa.2009.11.005

Cited by 67 publications

(46 citation statements)

References 34 publications

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“…This characteristic may due to a high oxygen uptake capacity resulting from a lack of down-regulation of gill morphology (Chen 2011), high tissue metabolite recruitment (He et al 2014), low digestive performance, and high environmental oxygen availability at low temperatures. This agrees with all 3 cyprinids and southern catfish measured at 15°C (Pang et al 2010(Pang et al , 2011. However, cold-water fish species, low temperature-acclimated Chinook salmon (10°C), and rainbow trout (15°C) all showed a digestion-priority mode (Alsop & Wood 1997, Thora rensen & Farrell 2006.…”

Section: Effect Of Digestionsupporting

confidence: 72%

“…Thus, the oxygen uptake capacity (as indicated by the postprandial active MO 2 ), and hence metabolic supply, is not enough to balance the oxygen demand during postprandial locomotion. One physiological function must be sacrificed to the other to some extent at a higher temperatures; as previously demonstrated in southern catfish, qingbo, and goldfish (Pang et al 2010(Pang et al , 2011. It has been suggested that for fish with a high digestive performance (e.g.…”

Section: Effect Of Digestionmentioning

confidence: 99%

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Effects of temperature and digestion on the swimming performance of juvenile Chinese bream

Peng¹,

Cao²,

Fu³

2014

Aquat. Biol.

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Fish that are active foragers usually perform routine activities while digesting their food; thus, postprandial swimming capacity might be ecologically important. To test whether digestion affected swimming performance in an active forager and whether the possible effects varied with temperature, we investigated the critical swimming speed (U crit ) and the resting and active metabolic rate (MO 2 ) of fasted and fed juvenile Chinese bream Parabramis pekinensis after 30 d exposure to 3 temperatures (15, 20, and 25°C). In fasted fish, U crit , resting and active MO 2 all increased with temperature. Digestion elicited a significant increase in MO 2 , which was enhanced at higher temperatures. Compared to fasted fish, fed fish exhibited significantly lower U crit in both the 25 and 20°C groups, whereas no significant difference in U crit was observed between fasted and fed fish in the 15°C group. Furthermore, digestion resulted in a significantly higher active MO 2 in the 15°C group, whereas no significant difference in active MO 2 was observed between fasted and fed fish in the 20 and 25°C groups. This suggests that the bream adopted an additive metabolic mode, i.e. digestion and swimming were performed independently at low temperatures, but shifted to a digestion-priority mode at higher temperatures due to a shortage of oxygen resulting from an increased digestive and locomotive oxygen demand. The present study contradicted our hypothesis that an active cyprinid with high swimming per formance would give priority to locomotion when the oxygen supply was insufficient to meet the metabolic demands of both digestion and swimming.

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Section: Effect Of Digestionsupporting

confidence: 72%

Section: Effect Of Digestionmentioning

confidence: 99%

Effects of temperature and digestion on the swimming performance of juvenile Chinese bream

Peng¹,

Cao²,

Fu³

2014

Aquat. Biol.

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“…A Brett-type swimming tunnel respirometer (Brett, 1964) was used to measure U crit and M O2 during swimming as a function of swimming speed (for details, see Pang et al, 2010). The respirometer was constructed from clear plastic poly-methyl-methacrylate.…”

Section: Parameter Measurements Measurement Of U Crit and Swimming M O2mentioning

confidence: 99%

The effects of caudal fin loss and regeneration on the swimming performance of three cyprinid fish with different swimming capacities

Cao

2013

Journal of Experimental Biology

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SUMMARYIn nature, the caudal fins of fish species are frequently lost to some extent by aggressive behaviour, predation and diseases. To test whether the swimming performance of fish with different swimming capacities would be differentially affected due to caudal fin loss and regeneration, we investigated the critical swimming speed (U crit ), swimming metabolic rate (M O2 ), tail beat frequency (f TB ) and tail beat amplitude (A TB ) after caudal fin loss and regeneration (20days) in juveniles of three cyprinid fish species: the qingbo (Spinibarbus sinensis; strong swimmer), the common carp (Cyprinus carpio; intermediate swimmer) and the goldfish (Carassius auratus; poor swimmer). The U crit values of the caudal-fin-lost qingbo, common carp and goldfish were 49, 32 and 35% significantly lower than those of the control groups, respectively. The maximum tail beat amplitude (A TBmax ) (all three fishes), the maximum tail beat frequency (f TBmax ) (only the common carp and the goldfish) and/or the active metabolic rate (M O2active ) (only the common carp) of the caudal-fin-lost fish were significantly higher than those of the control groups. After 20days of recovery, the caudal fins recovered to 41, 47 and 24% of those of the control groups for the qingbo, the common carp and the goldfish, respectively. However, the U crit values of the fin-regenerated qingbo, common carp and goldfish recovered to 86, 91 and 95% of those of the control group, respectively. The caudal-fin-regenerated qingbo and common carp showed a significantly higher A TBmax and f TBmax , respectively, compared with those of the control groups. The qingbo had a higher f TBmax but a lower A TBmax than the common carp and the goldfish, which suggested that a strong swimmer may maintain swimming speed primarily by maintaining a greater f TBmax , for which the caudal fin plays a more important role during swimming, than a poor swimmer. The M O2active of fish (common carp) with a redundant respiratory capacity could increase due to caudal fin loss to meet the increase in energy expenditure required by an increase in f TBmax . In addition, the sustained swimming performance may not be the only selective pressure acting on caudal fin size in these three species, and the present caudal fin size may be a trade-off between sustain swimming performance and other factors (e.g. sexual selection, escape responses). Supplementary material available online at

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“…A Brett-type swimming tunnel respirometer with a swim chamber of 19.87cm 2 cross-sectional area was used to measure the fish's U crit [total volume 3.5l; for details see Li et al (Li et al, 2010) and Pang et al (Pang et al, 2010)]. Fish were individually transferred into the swim tunnel and allowed to recover for 1h, during which time there was continuous aerated water flow through the respirometer.…”

Section: U Crit and Swimming M O2mentioning

confidence: 99%

The effect of acclimation to hypoxia and sustained exercise on subsequent hypoxia tolerance and swimming performance in goldfish (Carassius auratus)

Brauner

Cao

et al. 2011

Journal of Experimental Biology

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117

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SUMMARYThe objective of this study was to determine whether acclimation to hypoxia and sustained exercise would increase hypoxia tolerance (as indicated by a decrease in critical oxygen tension, P crit ) and swimming performance in goldfish (Carassius auratus), and to investigate the relationship between changes in performance and gill remodelling and tissue metabolic capacity. Goldfish were acclimated to either hypoxia (48h at 0.3mg O 2 l ) and compared with values from control fish. Acclimation to both hypoxia and sustained exercise improved hypoxia tolerance (P crit was reduced by 49% and 39%, respectively), which was associated with an increase in lamellar surface area (71% and 43%, respectively) and an increase in blood [Hb] (26% in both groups). Exercise acclimation also resulted in a decrease in routine M O2 (M O2,rout ). Acclimation to both hypoxia and sustained exercise resulted in a significant increase in U crit in hypoxia (18% and 17%, respectively), which was associated with an increase in maximal O 2 consumption rate at U crit (M O2,active ; 35% and 39%, respectively). While hypoxia acclimation resulted in an increase in U crit in normoxia, acclimation to sustained exercise did not improve subsequent swimming performance in normoxia. This lack of improvement was possibly due to depleted oxidizable substrates during exercise acclimation.

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The effects of feeding on the swimming performance and metabolic response of juvenile southern catfish, Silurus meridionalis, acclimated at different temperatures

Cited by 67 publications

References 34 publications

Effects of temperature and digestion on the swimming performance of juvenile Chinese bream

Effects of temperature and digestion on the swimming performance of juvenile Chinese bream

The effects of caudal fin loss and regeneration on the swimming performance of three cyprinid fish with different swimming capacities

The effect of acclimation to hypoxia and sustained exercise on subsequent hypoxia tolerance and swimming performance in goldfish (Carassius auratus)

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