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Compensatory Growth in Juveniles of Freshwater Redclaw Crayfish Cherax quadricarinatus Reared at Three Different Temperatures: Hyperphagia and Food Efficiency as Primary Mechanisms.

Stumpf L, López Greco LS - PLoS ONE (2015)

Bottom Line: The previously restricted crayfish held at 23, 27, and 31 ± 1 ° C displayed complete body weight catch-up through compensatory growth following the restriction period with depressed growth.Hepatopancreatic lipids were used as a metabolic fuel and hepatosomatic index was reduced in the previously restricted crayfish, but recovery at the same level of unrestricted crayfish occurred after the shift to daily feeding.The highest temperature affected adversely growth, feed intake, food efficiency, and metabolism of crayfish, whereas the lowest temperature and feeding restriction induced a more efficient growth of the crayfish.

View Article: PubMed Central - PubMed

Affiliation: Biology of Reproduction and Growth in Crustaceans, Department of Biodiversity and Experimental Biology, FCEyN, University of Buenos Aires, Buenos Aires, Argentina; IBBEA, CONICET-UBA, Buenos Aires, Argentina.

ABSTRACT
Feeding restriction, as a trigger for compensatory growth, might be considered an alternative viable strategy for minimizing waste as well as production costs. The study assessed whether juvenile redclaw crayfish Cherax quadricarinatus (initial weight 0.99 ± 0.03 g) was able to compensate for feeding restriction at different temperatures (23 ± 1, 27 ± 1 and 31 ± 1 ° C). Hyperphagia, food utilization efficiency, energetic reserves, and hepatopancreas structure were analyzed. Three temperatures and two feeding regimes (DF-daily fed throughout the experiment and CF- 4 days food deprivation followed by 4 days of feeding, intermittently) were tested. The restriction period was from day 1 to 45, and the recovery period was from day 45 to 90. The previously restricted crayfish held at 23, 27, and 31 ± 1 ° C displayed complete body weight catch-up through compensatory growth following the restriction period with depressed growth. The mechanisms that might explain this response were higher feed intake (hyperphagia), and increased food utilization efficiency. Hepatopancreatic lipids were used as a metabolic fuel and hepatosomatic index was reduced in the previously restricted crayfish, but recovery at the same level of unrestricted crayfish occurred after the shift to daily feeding. The highest temperature affected adversely growth, feed intake, food efficiency, and metabolism of crayfish, whereas the lowest temperature and feeding restriction induced a more efficient growth of the crayfish.

No MeSH data available.


Related in: MedlinePlus

General schedule of the protocol applied in the experiment, and the treatments used in juveniles of the redclaw crayfish Cherax quadricarinatus Black square: Fed and White square: Unfed.Temperature regimes: 23±1°C, 27±1°C and 31±1°C and feeding regimes: DF (juveniles fed daily throughout the experimental period) and CF (juveniles fed for 4 days followed by 4 days of food deprivation, intermittently during the first 45 days of the experimental period and fed daily from day 45 to day 90).
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pone.0139372.g001: General schedule of the protocol applied in the experiment, and the treatments used in juveniles of the redclaw crayfish Cherax quadricarinatus Black square: Fed and White square: Unfed.Temperature regimes: 23±1°C, 27±1°C and 31±1°C and feeding regimes: DF (juveniles fed daily throughout the experimental period) and CF (juveniles fed for 4 days followed by 4 days of food deprivation, intermittently during the first 45 days of the experimental period and fed daily from day 45 to day 90).

Mentions: The factorial experiment was performed by means of a 3 × 2 (three temperatures and two feeding regimes), and lasted 90 days. Three temperature regimes (23±1°C, 27±1°C and 31±1°C) that cover the optimum range for C. quadricarinatus growth [17] were chosen in this experiment; they were named low, optimum and high temperature, respectively. Two feeding regimes were established for each temperature, the control: daily fed throughout the experiment (DF), and the cyclic feeding (CF). The CF feeding regime was carried out intermittently, through 4 days of food deprivation followed by 4 days of feeding, until day 45 (restriction period). Thereafter from day 45 to day 90, juveniles were daily fed (recovery period) (Fig 1). This feeding regime was selected based on previous compensatory growth results with complete catch-up in the same species [5].


Compensatory Growth in Juveniles of Freshwater Redclaw Crayfish Cherax quadricarinatus Reared at Three Different Temperatures: Hyperphagia and Food Efficiency as Primary Mechanisms.

Stumpf L, López Greco LS - PLoS ONE (2015)

General schedule of the protocol applied in the experiment, and the treatments used in juveniles of the redclaw crayfish Cherax quadricarinatus Black square: Fed and White square: Unfed.Temperature regimes: 23±1°C, 27±1°C and 31±1°C and feeding regimes: DF (juveniles fed daily throughout the experimental period) and CF (juveniles fed for 4 days followed by 4 days of food deprivation, intermittently during the first 45 days of the experimental period and fed daily from day 45 to day 90).
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4589333&req=5

pone.0139372.g001: General schedule of the protocol applied in the experiment, and the treatments used in juveniles of the redclaw crayfish Cherax quadricarinatus Black square: Fed and White square: Unfed.Temperature regimes: 23±1°C, 27±1°C and 31±1°C and feeding regimes: DF (juveniles fed daily throughout the experimental period) and CF (juveniles fed for 4 days followed by 4 days of food deprivation, intermittently during the first 45 days of the experimental period and fed daily from day 45 to day 90).
Mentions: The factorial experiment was performed by means of a 3 × 2 (three temperatures and two feeding regimes), and lasted 90 days. Three temperature regimes (23±1°C, 27±1°C and 31±1°C) that cover the optimum range for C. quadricarinatus growth [17] were chosen in this experiment; they were named low, optimum and high temperature, respectively. Two feeding regimes were established for each temperature, the control: daily fed throughout the experiment (DF), and the cyclic feeding (CF). The CF feeding regime was carried out intermittently, through 4 days of food deprivation followed by 4 days of feeding, until day 45 (restriction period). Thereafter from day 45 to day 90, juveniles were daily fed (recovery period) (Fig 1). This feeding regime was selected based on previous compensatory growth results with complete catch-up in the same species [5].

Bottom Line: The previously restricted crayfish held at 23, 27, and 31 ± 1 ° C displayed complete body weight catch-up through compensatory growth following the restriction period with depressed growth.Hepatopancreatic lipids were used as a metabolic fuel and hepatosomatic index was reduced in the previously restricted crayfish, but recovery at the same level of unrestricted crayfish occurred after the shift to daily feeding.The highest temperature affected adversely growth, feed intake, food efficiency, and metabolism of crayfish, whereas the lowest temperature and feeding restriction induced a more efficient growth of the crayfish.

View Article: PubMed Central - PubMed

Affiliation: Biology of Reproduction and Growth in Crustaceans, Department of Biodiversity and Experimental Biology, FCEyN, University of Buenos Aires, Buenos Aires, Argentina; IBBEA, CONICET-UBA, Buenos Aires, Argentina.

ABSTRACT
Feeding restriction, as a trigger for compensatory growth, might be considered an alternative viable strategy for minimizing waste as well as production costs. The study assessed whether juvenile redclaw crayfish Cherax quadricarinatus (initial weight 0.99 ± 0.03 g) was able to compensate for feeding restriction at different temperatures (23 ± 1, 27 ± 1 and 31 ± 1 ° C). Hyperphagia, food utilization efficiency, energetic reserves, and hepatopancreas structure were analyzed. Three temperatures and two feeding regimes (DF-daily fed throughout the experiment and CF- 4 days food deprivation followed by 4 days of feeding, intermittently) were tested. The restriction period was from day 1 to 45, and the recovery period was from day 45 to 90. The previously restricted crayfish held at 23, 27, and 31 ± 1 ° C displayed complete body weight catch-up through compensatory growth following the restriction period with depressed growth. The mechanisms that might explain this response were higher feed intake (hyperphagia), and increased food utilization efficiency. Hepatopancreatic lipids were used as a metabolic fuel and hepatosomatic index was reduced in the previously restricted crayfish, but recovery at the same level of unrestricted crayfish occurred after the shift to daily feeding. The highest temperature affected adversely growth, feed intake, food efficiency, and metabolism of crayfish, whereas the lowest temperature and feeding restriction induced a more efficient growth of the crayfish.

No MeSH data available.


Related in: MedlinePlus