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

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.

Compensatory growth offsets poor condition in native trout populations

“…individual differences in competitive interactions). However, our results support inferences from both experimental (Stumpf & Greco, 2015;Xie et al, 2001) and field studies (Bize, Metcalfe, & Roulin, 2006;Bjorndal, Bolten, Dellinger, Delgado, & Martins, 2003;Douhard, Gaillard, Pellerin, Jacob, & Lemaitre, 2017) of other taxa demonstrating growth compensation (Hector & Nakagawa, 2012). The concordance of evidence from field studies, such as ours, with experimental approaches strengthens our inferences for this growth phenomenon (sensu Carpenter, 1996;Bruno, Stachowicz, & Bertness, 2003;Fretwell, 1972).…”

“…However, our results support inferences from both experimental(Stumpf & Greco, 2015;Xie et al, 2001) and field studies(Bize, Metcalfe, & Roulin, 2006;Bjorndal, Bolten, Dellinger, Delgado, & Martins, 2003;Douhard, Gaillard, Pellerin, Jacob, & Lemaitre, 2017) of other taxa demonstrat- Note: predictions are based on the median mass of individual fish in the analyses [Colour figure can be viewed at wileyonlinelibrary.com]differences in competitive interactions).…”

Losing Reproduction: Effect of High Temperature on Female Biochemical Composition and Egg Quality in a Freshwater Crustacean with Direct Development, the Red Cherry Shrimp,Neocaridina davidi(Decapoda, Atyidae)

“…However, the fact that nonovigerous females at 33 7C had the same lipid content as non-ovigerous females at 28 7C indicates that the difference in lipid content between TOFs and COFs may have arisen in the interval between female transfer to 28 7C and spawning. It is possible that the metabolic rate of females decreased when they were moved from 33 7C to 28 7C (Childress et al, 1990), leading to a higher energetic efficiency caused by lower metabolic expenditure, as has been proposed for other decapod crustaceans after their exposure to stressful situations (Stumpf and López Greco, 2015). Taking into account that lipid levels can be rapidly restored following a stress period (Stumpf and López Greco, 2015), the higher energetic efficiency at the optimum temperature may explain the fast accumulation of more lipid reserves in TOFs before mating and spawning.…”

“…Of particular significance are polyunsaturated fatty acids, which accumulate in the ovaries at advanced maturation stages (Harrison, 1990). The use of biochemical reserves has been shown to be positively correlated with water temperature in decapod crustaceans (Thomas et al, 2000;Stumpf and López Greco, 2015), scallops (Martínez et al, 2000a, b), and fish (Tidwell et al, 1999). As a consequence, high temperatures may also affect vitellogenesis and reproductive performance in aquatic invertebrates.…”

Mobilization of energetic reserves during starvation in juveniles of different size of the redclaw crayfishCherax quadricarinatus

“…and commercial balanced feed for tropical fish Tetracolor ® (Tetra holding (US) Inc., Blacksburg, Germany), containing 475 g/kg crude protein, 65 g/kg crude fat, 20 g/kg crude fibre, 60 g/kg moisture, 15 g/kg phosphorus and 100 mg/kg ascorbic acid. This diet was pre viously found to be adequate for the studied species (Castillo Díaz et al, 2016;Stumpf & López Greco, 2015). After reaching the first free living stage III, the juveniles were separated from their mothers and randomly assigned to the feeding treatments described below.…”