Individual boldness traits influenced by temperature in male Siamese fighting fish

Forsatkar, Mohammad Navid; Nematollahi, Mohammad Ali; Biro, Peter A.; Beckmann, Christa

doi:10.1016/j.physbeh.2016.08.007

Cited by 32 publications

(23 citation statements)

References 53 publications

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“…hunger levels (Johnsson et al 1996)? Maybe environmental factors, such as light conditions (Varanelli and McCleave 1974;Enefalk et al 2017), water temperatures (Gibson 2015;Forsatkar et al 2016), and/or electromagnetic fields (Varanelli and McCleave 1974;Lee et al 2015), in the lab vary spatially and temporally, generating the behavioural variation? Or are we observing different consistent personalities among individuals as resulting from genetic (Bakker 1986), parental (Burton et al 2016), epigenetic (Ledón-Rettig et al 2013), or environmental (Sundström et al 2003) effects?…”

Section: Why All This Variation?mentioning

confidence: 99%

Studying behavioural variation in salmonids from an ecological perspective: observations questions methodological considerations

Johnsson

Näslund

2018

Rev Fish Biol Fisheries

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Section: Why All This Variation?mentioning

confidence: 99%

Studying behavioural variation in salmonids from an ecological perspective: observations questions methodological considerations

Johnsson

Näslund

2018

Rev Fish Biol Fisheries

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“…Siamese fighting fish (Betta splendens) to a high temperature increased boldness-related behaviours (Forsatkar et al, 2016). The current study found that displaying a conspecific individual increased the time spent in the dark compartment, which d-rR medaka male fish would normally avoid (i.e., the presence of the neighbour encouraged their risktaking).…”

Section: Discussionmentioning

confidence: 45%

“…A high food‐intake rate and metabolic rate are the reasons individuals are bolder and higher risk‐takers in the common carp ( C. carpio ) and the three‐spined stickleback ( G. aculeatus ) (Huntingford et al ., ; Jolles et al ., ). Subjecting Siamese fighting fish ( Betta splendens ) to a high temperature increased boldness‐related behaviours (Forsatkar et al ., ). The current study found that displaying a conspecific individual increased the time spent in the dark compartment, which d‐rR medaka male fish would normally avoid ( i.e ., the presence of the neighbour encouraged their risk‐taking).…”

Section: Discussionmentioning

confidence: 98%

“…To identify individual variations of boldness in fish, many studies have conducted various behavioural tests using an open field, a lightdark (LD) preference, a display of novel object and the presence of a predator (Brown et al, 2007;Champagne et al, 2010;Forsatkar et al, 2016;Gerlai et al, 2000;Thomson et al, 2012). Furthermore, risktaking behaviour influenced by physiological and environmental situations has been reported.…”

Section: Introductionmentioning

confidence: 99%

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The presence of a conspecific induces risk‐taking behaviour and enlargement of somata size of dopaminergic neurons in the brain of male medaka fish

Otsuka

Shimomura

Niwa

et al. 2020

Journal of Fish Biology

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Boldness and risk‐taking behaviours in animals are important traits to obtain advantages such as habitation, food resources, reproductive success and social dominance. Risk‐taking behaviour is influenced by physiological and environmental conditions; however, whether individual fish become bolder by the presence of conspecifics remains unknown. In this study, a light–dark preference test was conducted using medaka fish (Oryzias latipes) with or without a neighbouring conspecific. It was found that individual medaka male fish preferred a light environment and avoided a dark environment, whereas the display of a neighbouring conspecific enhanced the time the male spent in the dark environment (i.e., this condition encouraged risk‐taking). The blood glucose level increased in fish confined to the dark condition but did not increase in light‐preferring fish and risk‐taking fish. Large somata expressing tyrosine hydroxylase, which is the rate‐limiting enzyme in dopamine synthesis, were detected in the telencephalic and diencephalic brain regions in risk‐taking medaka, whereas large somata were detected in the diencephalic region in medaka confined to the dark condition. These findings indicated that medaka is a good fish model to explore the central roles of dopaminergic neurons in the telencephalon and the diencephalon, which regulate risk‐taking behaviour.

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“…An animal with a higher metabolism moves faster and therefore explores greater areas and is more likely to enter new environments . It therefore offers no insight to conclude that ectotherms become more "bold" as temperature increases due to an increase in their activity levels (Forsatkar et al 2016). Likewise, individuals with higher levels of testosterone are more aggressive, potentially allowing them to compete successfully with conspecifics over access to both food or mates, although carrying costs in the form of reduced immune function or increased predation risk.…”

Section: Life-history Evolution Trade-offs and Pace Of Lifementioning

confidence: 99%

Does the field of animal personality provide any new insights for behavioral ecology?

2017

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The field of animal personalities claims to fill a gap in our understanding of animal behavior, because it explicitly studies the adaptive significance of behavioral differences. This is a controversial claim given that the field of behavioral ecology firmly places the study of animal behavior in an evolutionary context. In fact, it is the evolutionary context that differentiates behavioral ecology from ethology and animal behavior, 2 fields that were already concerned with the study of behavior in nonhuman animals. So, if behavioral ecology already takes an evolutionary approach to variation in behavior, we ask what is personality research about exactly? This question is particularly pertinent now the focus of personality research shifts and the field moves away from being mainly descriptive to include quantitative frameworks. As a result, the field has come to borrow heavily from already established fields. In our view, this has resulted in "animal personality" studies becoming nothing more than a rebranding of existing fields of research-fields that are far more solidly grounded and hypothesis driven than the often vague and superficial focus on animal personalities.

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Individual boldness traits influenced by temperature in male Siamese fighting fish

Cited by 32 publications

References 53 publications

Studying behavioural variation in salmonids from an ecological perspective: observations questions methodological considerations

Studying behavioural variation in salmonids from an ecological perspective: observations questions methodological considerations

The presence of a conspecific induces risk‐taking behaviour and enlargement of somata size of dopaminergic neurons in the brain of male medaka fish

Does the field of animal personality provide any new insights for behavioral ecology?

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