Induced sustained swimming modifies the external morphology, increasing the oxygen-carrying capacity and plasma lactate levels of juvenile gilthead seabream (Sparus aurata) without changing fish performance or skeletal muscle characteristics

Yu, Xiaoming; Sousa, Vera; Oliveira, Beatriz Magalhães; Guardiola, Francisco A.; Silva-Brito, Francisca; Ozório, Rodrigo O. A.; Valente, Luísa M.P.; Magnoni, Leonardo J.

doi:10.1016/j.aquaculture.2022.738503

Cited by 12 publications

(2 citation statements)

References 86 publications

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“…However, the increase in length observed in the trout in the CA group is thought to be due to the elongation of their bodies (19.10 ± 0.10 cm) due to forced swimming caused by water flow. Yu et al (2022) found that extended periods of induced swimming activity had no significant effect on the growth rate, feed efficiency, or morphological characteristics of muscle tissues in gilthead seabream. However, it did result in a significant alteration in their body shape.…”

Section: Discussionmentioning

confidence: 99%

The effect of swimming activity and feed restriction of rainbow trout (Oncorhynchus mykiss) on water quality and fish‐plant growth performance in aquaponics

Tunçelli,

Memiş

2024

Journal of Fish Biology

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In this study, we investigated the effects of swimming activity and feed restriction on juvenile rainbow trout (Oncorhynchus mykiss) in decoupled aquaponic systems. Our focus was on assessing their impact on water quality parameters within the aquaponic setup and evaluating the growth performance of the fish, including final weight (FW), condition factor (K), coefficient of variation (c.v.) in weight, specific growth rate (SGR), total feed intake (g/fish), feed conversion rate (FCR), hepatosomatic index (HSI), and viscerosomatic index (VSI), as well as the growth of lettuce (Lactuca sativa L. var. elmaria). The study involved 108 juvenile rainbow trout with an average initial weight of 26.54 ± 0.36 g and 60 ten‐day‐old lettuce seedlings, over a period of 42 days. We designed four treatment groups, each with three fish tanks: static ad libitum (SA), where fish were in static water conditions and fed to satiation; static restriction (SR), with fish in static water and a 25% feed restriction; current ad libitum (CA), where fish experienced forced swimming at 1 BL s−1; and current restriction (CR), with swimming exercise at 1 BL s−1 and a 25% feed restriction. Using a flow rate of 1 BL s−1 in the tanks for rainbow trout yielded several benefits. Notably, the fish in the CA group exhibited increased feed intake (60 ± 1.78 g fish−1) and enhanced fish growth with an FW of 91.72 ± 0.91 g, compared to the SA group (55.88 ± 0.88 g fish−1 for feed intake and 89.26 ± 0.81 g for FW). In contrast, the CR group showed a reduced feed intake (39.02 ± 2.78 g fish−1) and a lower FW (67.85 ± 1.49 g) compared to the CA group. In addition, the CA group demonstrated positive contributions to fish development with a reduced HSI (1.26 ± 0.02) in comparison to the SA group (1.56 ± 0.14). Inadequate nutrient provisioning in the SR and CR groups negatively impacted fish growth and system efficiency. Our findings suggest that optimizing water flow and feed benefits fish and plants and enhances system sustainability.

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Section: Discussionmentioning

confidence: 99%

The effect of swimming activity and feed restriction of rainbow trout (Oncorhynchus mykiss) on water quality and fish‐plant growth performance in aquaponics

Tunçelli,

Memiş

2024

Journal of Fish Biology

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“…The latter authors have shown contrasting differences in body shape induced by different water flow conditions during rearing in juvenile Atlantic salmon and brown trout, with salmon being deeper‐bodied and trout a more streamlined shape in fast‐flowing water. Similarly, rearing conditions with fast flow and obligatory long‐term swimming induce changes in the external morphology of gilthead seabream (Yu et al, 2022b) and the cyprinid Schizothorax wangchiachii (Lu et al, 2020), by decreasing height and shaping a streamlined body, consequently reducing drag and energy costs. In general, cultured fish are described to have greater height and condition factors than their wild conspecifics, probably related to rearing environments leading to similar morphological changes (Wringe et al, 2015).…”

Section: Discussionmentioning

confidence: 99%

Morphology and metabolic traits related to swimming performance in Australasian snapper (Chrysophrys auratus) selected for fast growth

Magnoni,

Collins,

Wylie

et al. 2024

Journal of Fish Biology

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Changes in body shape are linked to swimming performance and become relevant for selective breeding programmes in cultured finfish. We studied how the selection for fast growth could affect phenotypes by investigating the relationship between swimming performance and body shape. We also investigated how swimming might affect plasma metabolite concentrations. Critical swimming speed (UCrit), body traits (e.g., BW, body weight; BL, body length; K, condition factor), and plasma lactate and glucose concentrations were evaluated in two cohorts of Australasian snapper (Chrysophrys auratus): one derived from wild broodstock (F1), and the other selected for fast growth (F4). UCrit tests (n = 8) were applied in groups of 10 snapper of similar BW (71.7 g) and BL (14.6 cm). The absolute or relative UCrit values of both cohorts were similar (0.702 m⋅s−1 and 4.795 BL⋅s−1, respectively), despite the F4 cohort displaying a higher K. A positive correlation between K and absolute UCrit (Pearson's r = 0.414) was detected in the F4 cohort, but not in the F1 cohort, which may be linked to differences in body shape. A negative correlation between relative UCrit and body size (Pearson's r between −0.682 and −0.501), but no correlation between absolute UCrit and body size, was displayed in both cohorts. Plasma lactate and glucose concentrations were higher in the F4 cohort at UCrit. Whether a longer selective breeding programme could result in more changes in body shape, potentially affecting swimming performance, should be explored, along with the potential outcomes of the differences in metabolic traits detected.

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Long-term sustained swimming improves swimming performance in Chinook salmon, Oncorhynchus tshawytscha, with and without spinal scoliosis

et al. 2023

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Induced sustained swimming modifies the external morphology, increasing the oxygen-carrying capacity and plasma lactate levels of juvenile gilthead seabream (Sparus aurata) without changing fish performance or skeletal muscle characteristics

Cited by 12 publications

References 86 publications

The effect of swimming activity and feed restriction of rainbow trout (Oncorhynchus mykiss) on water quality and fish‐plant growth performance in aquaponics

The effect of swimming activity and feed restriction of rainbow trout (Oncorhynchus mykiss) on water quality and fish‐plant growth performance in aquaponics

Morphology and metabolic traits related to swimming performance in Australasian snapper (Chrysophrys auratus) selected for fast growth

Long-term sustained swimming improves swimming performance in Chinook salmon, Oncorhynchus tshawytscha, with and without spinal scoliosis

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