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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

Total proteins in the tissues of the redclaw crayfish C. quadricarinatus throughout the experiment.(A) Hepatosomatic index and (B) Relative pleon mass. Temperature regimes: 23±1°C, 27±1°C and 31±1°C; 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), and days of the experiment: day 1 (beginning of the experiment), day 45 (the end of restriction period), day 60, 75 and 90 (recovery period). Letters “A,B,C” indicate significant differences interaction between temperature and time.
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pone.0139372.g005: Total proteins in the tissues of the redclaw crayfish C. quadricarinatus throughout the experiment.(A) Hepatosomatic index and (B) Relative pleon mass. Temperature regimes: 23±1°C, 27±1°C and 31±1°C; 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), and days of the experiment: day 1 (beginning of the experiment), day 45 (the end of restriction period), day 60, 75 and 90 (recovery period). Letters “A,B,C” indicate significant differences interaction between temperature and time.

Mentions: Regarding the biochemical analysis, an effect of the interaction between temperature and time on concentration of total proteins in hepatopancreas (F8, 97 = 3.76; P< 0.001) and abdominal muscle (F8, 124 = 2.77; P = 0.007) was observed. In the hepatopancreas, juveniles acclimated to 23°C and 31°C had higher total proteins values at the beginning of the experiment (day 1) that those juveniles exposed to 27°C. However, in the remaining of the experiment the values were similar at all temperatures tested (Fig 5A). In the abdominal muscle, juveniles acclimated to 23°C had higher total proteins values at the beginning of the experiment (day 1) that those juveniles exposed to 27°C and 31°C, while at day 45 these values were similar among temperatures. At day 75, juveniles exposed to 31°C had a higher protein concentration than those juveniles exposed to 23°C and 27°C, but at the end of the experiment these values were equated (Fig 5B).


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)

Total proteins in the tissues of the redclaw crayfish C. quadricarinatus throughout the experiment.(A) Hepatosomatic index and (B) Relative pleon mass. Temperature regimes: 23±1°C, 27±1°C and 31±1°C; 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), and days of the experiment: day 1 (beginning of the experiment), day 45 (the end of restriction period), day 60, 75 and 90 (recovery period). Letters “A,B,C” indicate significant differences interaction between temperature and time.
© Copyright Policy
Related In: Results  -  Collection

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

pone.0139372.g005: Total proteins in the tissues of the redclaw crayfish C. quadricarinatus throughout the experiment.(A) Hepatosomatic index and (B) Relative pleon mass. Temperature regimes: 23±1°C, 27±1°C and 31±1°C; 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), and days of the experiment: day 1 (beginning of the experiment), day 45 (the end of restriction period), day 60, 75 and 90 (recovery period). Letters “A,B,C” indicate significant differences interaction between temperature and time.
Mentions: Regarding the biochemical analysis, an effect of the interaction between temperature and time on concentration of total proteins in hepatopancreas (F8, 97 = 3.76; P< 0.001) and abdominal muscle (F8, 124 = 2.77; P = 0.007) was observed. In the hepatopancreas, juveniles acclimated to 23°C and 31°C had higher total proteins values at the beginning of the experiment (day 1) that those juveniles exposed to 27°C. However, in the remaining of the experiment the values were similar at all temperatures tested (Fig 5A). In the abdominal muscle, juveniles acclimated to 23°C had higher total proteins values at the beginning of the experiment (day 1) that those juveniles exposed to 27°C and 31°C, while at day 45 these values were similar among temperatures. At day 75, juveniles exposed to 31°C had a higher protein concentration than those juveniles exposed to 23°C and 27°C, but at the end of the experiment these values were equated (Fig 5B).

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