Growth, body condition and contest performance after early‐life food restriction in a long‐lived tropical fish

Ziegelbecker, Angelika; Sefc, Kristina M.

doi:10.1002/ece3.7867

Cited by 8 publications

(9 citation statements)

References 70 publications

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“…Contrary to our expectations, total length and weight did not differ between the two feeding conditions. It is likely that these two variables may have been significantly reduced soon after the introduction of food restrictions, as described by Ziegelbecker and Sefc (2021) . But later, size and weight increased to values close to high-ration treatment, suggesting that white seabream invested in body condition, perhaps through a reduction of activity levels, which is consistent with the need to reduce risks of predation ( Ziegelbecker and Sefc, 2021 ).…”

Section: Discussionmentioning

confidence: 99%

“…It is likely that these two variables may have been significantly reduced soon after the introduction of food restrictions, as described by Ziegelbecker and Sefc (2021) . But later, size and weight increased to values close to high-ration treatment, suggesting that white seabream invested in body condition, perhaps through a reduction of activity levels, which is consistent with the need to reduce risks of predation ( Ziegelbecker and Sefc, 2021 ). Unfortunately, we did not assess fish activity levels under the different treatments; therefore, we can only speculate that individuals under food deprivation and high temperature were less active as an energy-saving strategy.…”

Section: Discussionmentioning

confidence: 99%

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Effects of exposure to elevated temperature and different food levels on the escape response and metabolism of early life stages of white seabream, Diplodus sargus

Almeida

Lopes

Ribeiro

et al. 2022

Conservation Physiology

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Recent literature suggests that anthropogenic stressors can disrupt ecologically relevant behaviours in fish, such as the ability to escape from predators. Disruption of these behaviours at critical life history transitions, such as the transition from the pelagic environment to the juvenile/adult habitat, may have even greater repercussions. The literature suggests that an increase in temperature can affect fish escape response, as well as metabolism; however, few studies have focused on the acute sensitivity responses and the potential for acclimation through developmental plasticity. Here, we aimed at evaluating the acute and long-term effects of exposure to warming conditions on the escape response and routine metabolic rate (RMR) of early life stages of the white seabream, Diplodus sargus. Additionally, as food availability may modulate the response to warming, we further tested the effects of long-term exposure to high temperature and food shortage, as individual and interacting drivers, on escape response and RMR. Temperature treatments were adjusted to ambient temperature (19°C) and a high temperature (22°C). Feeding treatments were established as high ration and low ration (50% of high ration). Escape response and RMR were measured after the high temperature was reached (acute exposure) and after 4 weeks (prolonged exposure). Acute warming had a significant effect on escape response and generated an upward trend in RMR. In the long term, however, there seems to be an acclimation of the escape response and RMR. Food shortage, interacting with high temperature, led to an increase in latency response and a significant reduction in RMR. The current study provides relevant experimental data on fishes’ behavioural and physiological responses to the combined effects of multiple stressors. This knowledge can be incorporated in recruitment models, thereby contributing to fine-tuning of models required for fisheries management and species conservation.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Effects of exposure to elevated temperature and different food levels on the escape response and metabolism of early life stages of white seabream, Diplodus sargus

Almeida

Lopes

Ribeiro

et al. 2022

Conservation Physiology

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“…Food limitation caused the death of one-third population and reduced the growth rate (indicated by the bodyweight) from 3 - 5 times. Tropical fish larvae typically have a high metabolism and low energy reserve (Clarke and Johnston, 1999; Johnston and Battram, 1993) as the response to accelerate their early growth (Henderson, 2005; Metcalfe and Monaghan, 2001) which is critical for early survival from competition (Nakayama and Fuiman, 2010) and antipredator (Hoey and McCormick, 2004; Ziegelbecker and Sefc, 2021). It is likely that high mortality of fish larvae in low-food treatment may reflect their poor energy reserves such as lower lipid and protein contents (see e.g., in rainbow trout Josephson et al, 2012), which could not buffer them during a high energy demand period of a MHW to cope with heat stress.…”

Section: Discussionmentioning

confidence: 99%

Direct and delayed synergistic effects of marine heatwaves, metals and food limitation on tropical reef-associated fish larvae

Dinh

et al. 2022

Preprint

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Tropical fish are fast-growing and high energetic-demand organisms, which can be highly vulnerable to long-lasting effects of heat stress and pollution, particularly under food shortages. We tested this by assessing highly complex direct and delayed interactive effects of an extreme temperature (32°C) from a simulated marine heatwave (MHW), copper (Cu, 0, 100, 150 and 175 micro g L-1) and food availability (limited and saturated food) on larvae of a tropical, reef-associated seaperch (Psammoperca waigiensis). Cu, MHW, and food limitation independently reduced survival and growth, partly explained by reduced feeding. The negative effect of Cu on fish survival was more substantial under MHW, particularly under limited food. Delayed interactive effects of Cu, MHW, and food limitation were still lethal to fish larvae during the post-exposure period. These results indicate that reef-associated fish larvae are highly vulnerable to these dominant stressors, impairing their ecological function as predators in the coral reefs.

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“…Modifying the amount of food or the quality of the diet provided to juveniles in order to manipulate growth is a priori reasonable, as the expression of trade-off is often dependent on resource availability (Metcalfe and Monaghan, 2003;Cohen et al, 2019). Nevertheless, this approach may have several drawbacks when confronted with the phenomenon 10.3389/fevo.2022.915054 of compensatory growth after periods of starvation (e.g., Metcalfe and Monaghan, 2003;Kecko et al, 2017;Ziegelbecker and Sefc, 2021), or when aging does not depend on early diet (Zajitschek et al, 2009), leading to contradictory or inconclusive results. Moreover, increasing growth rate by setting highly favorable conditions may generate individuals with a higher fitness, called the "silver spoon" effect (Grafen, 1988;Lindström, 1999;Monaghan, 2008), which may prevent detection of senescence (Angell et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

“Born with a silver spoon in the mouth has bad sides too”: Experimentally increasing growth rate enhances individual quality but accelerates reproductive senescence in females of the mealworm beetle, Tenebrio molitor

et al. 2022

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Senescence occurs because of the decline of the strength of selection with age, allowing late-life reduced performances not being counter selected. From there, several phenomena may explain late-life reduced performances, such as the accumulation of deleterious mutations, the expression of pleiotropic genes or the existence of resource trade-offs between early and late performances. This latter phenomenon is at the core of the disposable soma theory of aging, which predicts that growth and early-life reproduction have costs that increase reproductive and actuarial senescence. Whereas the impact of the cost of early reproduction on reproductive and actuarial senescence has been extensively studied, that of the cost of growth remains overlooked and often inconclusive, possibly because of confounding effects associated with the procedures used to manipulate growth rate. Here, we investigated the cost of growth rate and its impact on reproductive senescence and longevity of females of the mealworm beetle, Tenebrio molitor. For this purpose, we generated insects with contrasted growth rates by raising groups of them in conditions below, above and optimal relative humidity (RH: 55, 85 and 70%, respectively) during the larval stage. The resulting adult females then bred, under the same optimal RH conditions, early in life, then later in life and were followed there until death. We found that larvae grown under the highest relative humidity exhibited the highest larval growth rate, thanks to both shorter growth duration and the achievement of heavier pupae mass. Adult females from this favorable growing condition lived longer, were more fecund early in life, but suffered from lower late-life reproductive investment. Our study shows that growth rate, which is highly dependent on the early-life environment, is an important factor modulating adult reproductive senescence, through the occurrence of early-late life trade-offs.

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Growth, body condition and contest performance after early‐life food restriction in a long‐lived tropical fish

Abstract: This is an open access article under the terms of the Creat ive Commo ns Attri bution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

Cited by 8 publications

References 70 publications

Effects of exposure to elevated temperature and different food levels on the escape response and metabolism of early life stages of white seabream, Diplodus sargus

Effects of exposure to elevated temperature and different food levels on the escape response and metabolism of early life stages of white seabream, Diplodus sargus

Direct and delayed synergistic effects of marine heatwaves, metals and food limitation on tropical reef-associated fish larvae

“Born with a silver spoon in the mouth has bad sides too”: Experimentally increasing growth rate enhances individual quality but accelerates reproductive senescence in females of the mealworm beetle, Tenebrio molitor

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