Hunger-induced foraging behavior of two cyprinid fish: Pseudorasbora parva and Rasbora daniconius

Priyadarshana, Tilak; Asaeda, Takashi; Manatunge, Jagath

doi:10.1007/s10750-006-0201-5

Cited by 28 publications

(15 citation statements)

References 33 publications

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“…Further, a high feed delivery rate may reduce an individual's swimming speeds during feeding, as fish switch from swimming to processing and handling prey as feed encounter rate increases (e.g. Priyadarshana et al 2006). In addition, increases in long-term EMG profiles (obtained via an EMG transmitter calibrated using a hard-wired EMG during U crit tests) were also observed as consequences of the administration of Fish Physiol Biochem (2012) 38:17-41 25 three diet formulations (organic vs. conventional) (Carbonara 2009) and in experiments evaluating the consequences of starvation (McFarlane et al 2004).…”

Section: Individual Swimming Behaviourmentioning

confidence: 99%

Behavioural indicators of welfare in farmed fish

Martins¹,

Galhardo²,

Noble³

et al. 2011

Current Views on Fish Welfare

120

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Behaviour represents a reaction to the environment as fish perceive it and is therefore a key element of fish welfare. This review summarises the main findings on how behavioural changes have been used to assess welfare in farmed fish, using both functional and feeling-based approaches. Changes in foraging behaviour, ventilatory activity, aggression, individual and group swimming behaviour, stereotypic and abnormal behaviour have been linked with acute and chronic stressors in aquaculture and can therefore be regarded as likely indicators of poor welfare. On the contrary, measurements of exploratory behaviour, feed anticipatory activity and rewardrelated operant behaviour are beginning to be considered as indicators of positive emotions and welfare in

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Section: Individual Swimming Behaviourmentioning

confidence: 99%

Behavioural indicators of welfare in farmed fish

Martins¹,

Galhardo²,

Noble³

et al. 2011

Current Views on Fish Welfare

120

View full text Add to dashboard Cite

show abstract

“…accrue greater energy reserves which would help them survive periods of food shortage and/or adopt an active foraging behavior). Secondly, we explored the effects of limited food on the growth and survival when fish could actively search for food, thereby allowing appetite stimulated activity to interact with stressful nutritional conditions (Priyadarshana et al 2006). Thirdly, because selection would act on more than physiological capacity to endure starvation (Schluter et al 1991;Grant and Grant 2002), we added social interactions, both competition among genotypes and predation risk, allowing us to evaluate the outcome of interactions between competitive ability, swimming activity, and risk-taking behavior of transgenic and wild fish under stressful nutritional conditions.…”

Section: Introductionmentioning

confidence: 99%

Increased intrinsic growth rate is advantageous even under ecologically stressful conditions in coho salmon (Oncorhynchus kisutch)

Sundström

Devlin

2010

Evol Ecol

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Growth rate is an ecologically important trait, affecting the energy acquisition from, and provisioning to, the surrounding community. One of many costs suggested to counteract the evolution of increased intrinsic growth rate is an associated reduction in tolerance to conditions of nutrient stress. Here we test this concept with individuals possessing experimentally increased intrinsic growth rates (growth hormone transgenic coho salmon, Oncorhynchus kisutch) relative to wild genotypes. Using a series of three experiments, survival and growth of both genotypes were assessed on a physiological and behavioral level while varying food abundance, social interactions, and predation risk. Only in complete absence of exogenous food in newly emerged fry did the high intrinsic growth rate appear costly with a shorter average survival time compared to wild-type (Exp. 1). In experiment 2, genotypes with elevated intrinsic growth showed equal or higher survival and growth than wild-type genotypes In a third experiment, adding very limited amounts of food and allowing for social interactions in a simulated natural environment benefited transgenic individuals relative to wild-types, but at similar magnitudes in both the absence and presence of predators. Populations with transgenic individuals present did not crash under these competitive conditions as previously reported when studied in simple environments where hiding and attack escape were not possible. Our data suggest that transgenic fish have a greater scope for growth under most conditions, but are not obligated to use this capability. Physiological (e.g. appetite and conversion efficiency) and behavioral traits (e.g. competitive ability and risk-taking) found previously to correlate positively with intrinsic growth rate in the transgenic strain likely aided in their survival and growth, even under food limited conditions. Hence, at least in coho salmon, intrinsic growth rate does not appear to strongly affect survival under nutrient stress.

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“…Fish often live in variable environments in which conditions such as food availability change profoundly, and are significantly correlated with growth, SMR and/or behavioural traits (Killen et al, 2011;Priyadarshana et al, 2006;Auer et al, 2016b). Typically, fish show high food consumption and thus faster growth rates when food availability is high (Dibattista et al, 2006;Auer et al, 2015b).…”

Section: Introductionmentioning

confidence: 99%

“…In addition, behavioural traits vary with food availability; however, the relationship varies among studies. For example, a study in Pseudorasbora parva and Rasbora daniconius found that individuals performed more foraging behaviours (and were more active and aggressive) when food resources were lacking (Priyadarshana et al, 2006), whereas a study of rainbow trout (Oncorhynchus mykiss) found that individuals performed more risktaking behaviours under conditions of food abundance (Biro et al, 2006). These physiological and behavioural responses to food availability and their ecological consequences are vital adaptations of fish in the natural environment.…”

Section: Introductionmentioning

confidence: 99%

Effects of food availability on metabolism, behaviour, growth and their relationships in a triploid carp

Liu

2017

Journal of Experimental Biology

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Metabolism, behaviour and growth are highly flexible in fish species, and inter-individual variation in these traits is evolutionarily and ecologically significant. It has long been suggested that these traits co-vary, although their relationships are debated. In the present study, we investigated whether metabolism, behaviour, growth and the potential relationships among them vary with food availability in sterile triploid carp. In this experimental animal model, we investigated the standard metabolic rate (SMR), growth performance and personality traits (i.e. activity, exploration and boldness) of juvenile individuals before and after 25 days of rearing in which fish were fed either once or twice a day to satiation. Inter-individual differences in SMR in each group showed high repeatability across the experimental period, and twice-fed fish showed higher SMRs than once-fed fish after 25 days of rearing. Compared with the once-fed group, the twice-fed group showed higher feeding rates (FRs) and lower feeding efficiencies (FEs) but similar specific growth rates (SGRs). None of the personality traits was affected by food availability. Furthermore, both boldness and exploration were highly repeatable throughout the experiment in the group fed twice a day, whereas only exploration showed repeatability in the group fed once a day. In the once-fed group, SMR and the personality traits were positively correlated with FR and negatively correlated with FE and/or SGR; however, these relationships did not exist in the twice-fed group due to the surplus of food. These results suggest that food availability significantly affects physiological, behavioural and ecological processes in these fish by altering the trade-off between metabolism and growth.

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Hunger-induced foraging behavior of two cyprinid fish: Pseudorasbora parva and Rasbora daniconius

Cited by 28 publications

References 33 publications

Behavioural indicators of welfare in farmed fish

Behavioural indicators of welfare in farmed fish

Increased intrinsic growth rate is advantageous even under ecologically stressful conditions in coho salmon (Oncorhynchus kisutch)

Effects of food availability on metabolism, behaviour, growth and their relationships in a triploid carp

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