Effect of hunger level and time of day on boldness and aggression in the zebrafish <i>Danio rerio</i>

Ariyomo, Tolulope O.; Watt, Penelope J.

doi:10.1111/jfb.12674

Cited by 40 publications

(19 citation statements)

References 59 publications

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“…3e,f). The finding that aggression does not show circadian alterations agrees with a previous study that compared zebrafish agonistic behaviour between 9 -11 am and 2 -4 pm (Ariyomo and Watt, 2015). This suggests that aggression can be compared in the morning and afternoon, thereby increasing the number of animals that can be measured in one day.…”

Section: Automatic Quantification Of Aggression and Wild-type Aggresssupporting

confidence: 90%

Automatic quantification of juvenile zebrafish aggression

Gutiérrez

Vacca

Pons

et al. 2018

Journal of Neuroscience Methods

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Section: Automatic Quantification Of Aggression and Wild-type Aggresssupporting

confidence: 90%

Automatic quantification of juvenile zebrafish aggression

Gutiérrez

Vacca

Pons

et al. 2018

Journal of Neuroscience Methods

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“…Boldness in an individual is increased by temperature and motivational state (Stephens & Krebs, ; Cuthill & Houston, ; van Baalen et al., ; Nowicki et al., ). When hungry, fishes exhibit enhanced boldness due to an augmented motivational state; this causes them to become more vulnerable to predators and less selective toward prey until threshold fullness is satisfied (Ariyomo & Watt, ). This could be an underlying mechanism in the results, in that an increased motivational state in the experimental setting could explain the type II response at 15 and 17° C and the transition into a type III sigmoidal response at 19° C may indicate a thermal threshold.…”

Section: Discussionmentioning

confidence: 99%

Increasing temperature decreases the predatory effect of the intertidal shannyLipophrys pholison an amphipod prey

South

Welsh

Antón

et al. 2017

Journal of Fish Biology

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Interactions between Lipophrys pholis and its amphipod prey Echinogammarus marinus were used to investigate the effect of changing water temperatures, comparing current and predicted mean summer temperatures. Contrary to expectations, predator attack rates significantly decreased with increasing temperature. Handling times were significantly longer at 19 ∘ C than at 17 and 15 ∘ C and the maximum feeding estimate was significantly lower at 19 ∘ C than at 17 ∘ C. Functional-response type changed from a destabilizing type II to the more stabilizing type III with a temperature increase to 19 ∘ C. This suggests that a temperature increase can mediate refuge for prey at low densities. Predatory pressure by teleosts may be dampened by a large increase in temperature (here from 15 to 19 ∘ C), but a short-term and smaller temperature increase (to 17 ∘ C) may increase destabilizing resource consumption due to high maximum feeding rates; this has implications for the stability of important intertidal ecosystems during warming events.

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“…To avoid disturbances, no human was present during recordings and tanks were covered with black plastic foil on three sides. Individuals were tested at the same time of day ± 15 min to avoid potential effects of hunger level or time of day on individual aggression [ 44 , 45 ] in repeated trials.…”

Section: Methodsmentioning

confidence: 99%

Predictability is attractive: Female preference for behaviourally consistent males but no preference for the level of male aggression in a bi-parental cichlid

2018

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Although personality traits can largely affect individual fitness we know little about the evolutionary forces generating and maintaining personality variation. Here, we investigated the hypothesis that personality variation in aggression is sexually selected in the monogamous, bi-parental cichlid Pelvicachromis pulcher. In this species, breeding pairs form territories and they aggressively defend their territory and offspring against con- and heterospecific intruders. In our mate choice study, we followed up two alternative hypotheses. We either expected females to show a directional preference for a high level and high consistency of aggression (potentially indicating mate choice for male parental quality). Alternatively, we expected females to choose males for (dis-)similarity in the level/consistency of aggression (potentially indicating mate choice for compatibility). Individual level and consistency of aggression were assessed for males and females using mirror tests. After eavesdropping on aggressive behaviour of two males (differing in level and consistency of aggression) females were then allowed to choose between the two males. Males, but not females, showed personality variation in aggression. Further, females generally preferred consistent over inconsistent males independent of their level of aggression. We did not detect a general preference for the level of male aggression. However, we found an above average preference for consistent high-aggression males; whereas female preference for inconsistent high-aggression did not deviate from random choice. Our results suggest behavioural consistency of aggression in male rainbow kribs is selected for via female mate choice. Further, our study underlines the importance of considering both the level and the consistency of a behavioural trait in studies of animal behaviour.

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Effect of hunger level and time of day on boldness and aggression in the zebrafish Danio rerio

Cited by 40 publications

References 59 publications

Automatic quantification of juvenile zebrafish aggression

Automatic quantification of juvenile zebrafish aggression

Increasing temperature decreases the predatory effect of the intertidal shannyLipophrys pholison an amphipod prey

Predictability is attractive: Female preference for behaviourally consistent males but no preference for the level of male aggression in a bi-parental cichlid

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