A Non-social and Isolate Rearing Condition Induces an Irreversible Shift toward Continued Fights in the Male Fighting Fish (Betta splendens)

Ichihashi, Tamako; Ichikawa, Yoko; Matsushima, Toshiya

doi:10.2108/zsj.21.723

Cited by 12 publications

(8 citation statements)

References 9 publications

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“…When verapamil concentration was higher (160 μg · L -1 ) the changes in behavior of Siamese fighting fish appeared earlier and after one week they were statistically significant (Tables 2, 3, 4). Ichihashi et al (2004) have studied the development of agonistic behavior in the male Siamese fighting fish and revealed that this fish is an excellent subject to study aggressive behavior. This unconditioned aggressive display is elicited by fish own image seen in the mirror (or appearance of another male Siamese fighting fish) and is terminated by an attack.…”

Section: Methodsmentioning

confidence: 99%

Verapamil – L type voltage gated calcium channel inhibitor diminishes aggressive behavior in male Siamese fighting fish

Kania

Debski²,

Wrońska³

et al. 2015

Polish Journal of Veterinary Sciences

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Verapamil is a L-type voltage gated calcium channels inhibitor (VGCCI), which is a highly prescribed drug used in the treatment of hypertension, angina pectoris, cardiac arrhythmia and cluster headaches. Its common use caused its appearance in water environment. VGCC inhibit epinephrine release and cause many neuro-hormonal changes influencing also fish behavior. Siamese fighting fish was chosen to study the influence of verapamil given to the water on the beginning of experiment in 3 different concentrations of 0 (control), 8 and 160 μg · L -1 , on aggressive behavior in these fish. The experimental fish were placed in individual glass containers for 3 weeks and the mirror test was used. The highest concentration led to a significant modulation of fish behavior after 1 week and the lower dose caused statistically significant behavioral changes after 2 weeks of verapamil treatment. Siamese fighting fish males exposed to verapamil had longer latencies to the first chase -12.6 s (8 μg · L -1 of verapamil) and 18.8 s (160 μg · L -1 of verapamil) compared to 5.6 s in the control group, decreased attack frequency and shorter duration of these attacks. The number of attacks within 10 min was decreased from 38.3 in the control group to 27.1 and 16.1, respectively. Also the total duration of these attacks decreased from 354.8 (control) to 326.4 (decrease statistically insignificant) and to 194.8 s in verapamil treated groups. It was shown, that even relatively low concentrations of verapamil in water may have adverse effects on fish and probably other living organisms.

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Section: Methodsmentioning

confidence: 99%

Verapamil – L type voltage gated calcium channel inhibitor diminishes aggressive behavior in male Siamese fighting fish

Kania

Debski²,

Wrońska³

et al. 2015

Polish Journal of Veterinary Sciences

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“…Cultured individuals of the species recently have been shown to communicate aggressiveness with their fin display, to assess their opponents size, and to deceive their opponents with their fin size (a trait selected in captivity) 47,93 . Studies observing competitive fights have shown that fish raised in isolation, without other fighting fish, tend to be more aggressive and are able to fight for a longer period of time 94 . A recent study showed that fighting fish reared in a group have less aggressive tendencies 95 .…”

Section: New Insights Into Phenotypes Sex Determination Domestication...mentioning

confidence: 99%

“…47,93 Studies observing competitive fights have shown that fish raised in isolation, without other fighting fish, tend to be more aggressive and are able to fight for a longer period of time. 94 A recent study showed that fighting fish reared in a group have less aggressive tendencies. 95 Long-time artificial selection for fighting capability has played a prominent role in the increase of aggression, impulsivity and boldness.…”

Section: Genetic Basis Of Aggressionmentioning

confidence: 99%

The ornamental fighting fish is the next model organism for genetic studies

Yue

Wang

Sun

et al. 2022

Reviews in Aquaculture

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The fighting fish Betta splendens is a freshwater species from Thailand and other Southeast Asian countries. This fish has been domesticated for 1000 years and bred for fighting, various colours, body size and fin types for 600 years. It is one of the most important fish species cultured for the world ornamental fish market. This fish is easy to culture, highly fecund and displays great morphological diversity. Its biology has been studied for over 100 years. Recently, its compact genome and transcriptomes have been sequenced. Genome editing with CRISPR/cas9 has been applied to knock out genes in this fish. Its diverse phenotypes, including colours, colour patterns, fin types, and aggressive behaviour, are complementary to those of other model animals.Therefore, this fish could be the next important model organism for studying phenotypic variation and aggressive behaviour. In this paper, we synthesized knowledge about its aquaculture, biology, genetics, genomic tools, phenotypes and novel insights on phenotypic variation, sex determination and aggression. We hope that the information described in this paper will facilitate genetic studies on phenotypic variations in aquaculture and aggressive behaviour in other species, including humans.

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“…In fish, social isolation rearing induces continued fights [22]. In another experiment in rodents, social isolation rearing disturbed male-male social interaction [23].…”

Section: Behavioral Changesmentioning

confidence: 99%

Social Isolation Rearing Induces Neuropsychiatric Diseases: Updated Overview

Famitafreshi

Karimian

2018

Complex Psychiatry

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Neuropsychiatric and neurologic diseases cause a great burden for individuals, families, and societies. Social isolation rearing can trigger a variety of psychiatric diseases. New advances suggest that epigenetic factors along with other neurochemical changes can be an important topic in neuropsychiatric diseases. It is thought that the prevention of social isolation rearing that occurs around birth can reduce the occurrence of neuropsychiatric diseases. It has been suggested that the environment can induce epigenetic alternation. So, for the diagnosis of a proportion of neuropsychiatric diseases, assessing epigenetic factors may be helpful. Also, apart from epigenetic factors, new advances have been made about new mechanisms of and treatments for such a disorder.

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A Non-social and Isolate Rearing Condition Induces an Irreversible Shift toward Continued Fights in the Male Fighting Fish (Betta splendens)

Cited by 12 publications

References 9 publications

Verapamil – L type voltage gated calcium channel inhibitor diminishes aggressive behavior in male Siamese fighting fish

Verapamil – L type voltage gated calcium channel inhibitor diminishes aggressive behavior in male Siamese fighting fish

The ornamental fighting fish is the next model organism for genetic studies

Social Isolation Rearing Induces Neuropsychiatric Diseases: Updated Overview

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