Evidence for the Involvement of Dopamine in Stress‐Induced Suppression of Reproduction in the Cichlid Fish <i>Oreochromis mossambicus</i>

Chabbi, Ambarisha; Ganesh, C.B.

doi:10.1111/jne.12269

Cited by 25 publications

(11 citation statements)

References 81 publications

(110 reference statements)

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“…bromocriptine, dopamine, gonadotropin releasing hormone, mosquitofish, puberty, viviparity Oncorhynchus mykiss (Linard, Bennan, & Saligaut, 1995), the tilapia Oreochromis mossambicus (Chabbi & Ganesh, 2015), the grey mullet Mugil cephalus (Aizen, Meiri, Tzchori, Levavi-Sivan, & Rosenfeld, 2005), and the sole Solea senegalensis (Guzman et al, 2011). Although the role, target and intensity of DA inhibition largely differ among other vertebrate classes (Castagna, Ball, & Balthazart, 1997;Crews & Moore, 1986;Hull et al, 1991;Sotowska-Brochocka, 1988), the inhibitory role of DA on GtH release is not evident in the Atlantic croaker Micropogonias undulates (Copeland & Thomas, 1989) and in the seabream Sparus aurata (Zohar et al, 1995).…”

Section: Introductionmentioning

confidence: 99%

Dopamine receptor agonist bromocriptine restrains the follicular development, hatchling success and puberty in Gambusia affinis

Bhat

Ganesh

2019

J Appl Ichthyol

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Summary The present investigation was conducted to determine the influence of dopamine (DA) receptor agonist bromocriptine (BRO) on reproduction and onset of puberty in the viviparous fish Gambusia affinis. In the first experiment, the mean number of stage I and II follicles (previtellogenic) in 0.8 or 5 mg BRO treated fish did not show significant difference compared to those of experimental controls, whereas the mean number of stage III follicles were significantly lower in 5 mg BRO treated fish compared to experimental controls. However, treatment of 0.8 or 5 mg BRO resulted in significantly lower numbers of stage IV (early vitellogenic) and V (late vitellogenic) follicles compared to those of experimental controls. There was decrease in the percent occurrence of pregnancy and different stages of embryos in BRO treated fish compared with the experimental controls. Concomitant with this, sparsely distributed gonadotropin releasing hormone immunoreactive (GnRH‐ir) fibres were observed in the proximal pars distalis (PPD) region of the pituitary gland in BRO treated fish compared to those of dense accumulations of these fibres in the PPD region of the pituitary gland in experimental controls. In the second experiment, exposure of juveniles (25 DPH) to same doses of BRO for 45 days resulted in complete absence of vitellogenic follicles and presence of few GnRH‐ir fibres in 5 mg BRO treated juvenile in contrast to presence of vitellogenic follicles and dense aggregation of GnRH fibres in treatment controls. Overall, the results of the present investigation suggest that DA affects ovarian follicular and embryonic development and onset of puberty in viviparous species.

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Section: Introductionmentioning

confidence: 99%

Dopamine receptor agonist bromocriptine restrains the follicular development, hatchling success and puberty in Gambusia affinis

Bhat

Ganesh

2019

J Appl Ichthyol

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“…Stress induces dopaminergic activity in the brain of tilapia Oreochromis mossambicus (Peters 1852) (Chabbi & Ganesh, 2015). Risperidone, which acts as an antagonist at dopamine D2…”

Section: Dopamine and The Aversive Behaviour Network Of Zebrafishmentioning

confidence: 99%

“…For instance, stress factors are known to induce brain dopamine activity in fish (Chabbi & Ganesh, 2015). Naturally, because the functions of the dopaminergic (DA) system are multiple, involving decision-making, learning and reward mechanisms (for example, Messias et al (2016aMessias et al ( , 2016b; Schultz (2002Schultz ( , 2006; Soares (2017)), the relationship between dopamine and stress will also be complex, contextual and brain-region specific.…”

Section: Stress Monoamines and Cleaning: An Emergent Mixture Mediatimentioning

confidence: 99%

The Integration of Sociality, Monoamines, and Stress Neuroendocrinology in Fish Models: Applications in the Neurosciences

Soares

Maximino

2018

Preprint

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Animal-focused research has been crucial for scientific advancement however, in this matter, rodents are still taking a starring role. Coming out from merely being supportive of evidence found in rodents, the use of fish models has slowly taken a more central role and expanded its overall contributions in areas such as social sciences, evolution, physiology, and recently in translational medical research. In neurosciences, zebrafish has been widely adopted, contributing to our understanding of the genetic control of brain processes, and the effects of pharmacological manipulations. However, discussion continues regarding the paradox of function versus structure, when fish and mammals are compared, and on the potentially evolutionarily conserved nature of behaviour across fish species. From the behavioural stand point we explored aversive/stress and social behaviour in selected fish models, and refer to the extensive contributions of stress and monoaminergic systems. We suggest that, in spite of marked neuroanatomical differences between fish and mammals, stress and sociality are conserved at the behavioural and molecular levels. We also suggest that stress and sociality are mediated by monoamines in predictable and non-trivial ways, and that monoamines could "bridge" the relationship between stress and social behaviour. To reconcile the level of divergence with the level of similarity, we need neuroanatomical, pharmacological, behavioural, and ecological studies conducted in the laboratory and in nature.These areas need to add to each other to enhance our understanding of fish behaviour and ultimately how this all may translate to better model systems for translational studies.

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“…Stress induces dopaminergic activity in the brain of tilapia Oreochromis mossambicus (Chabbi & Ganesh, 2015). Risperidone, which acts as an antagonist at dopamine D 2 and serotonin 5-HT 2A receptors, blocks stress-induced cortisol increases in zebrafish, without apparent behavioural effects (Idalencio et al, 2015).…”

Section: Dopamine and The Aversive Behaviour Network Of Zebrafishmentioning

confidence: 99%

Section: Stress Monoamines and Cleaning: An Emergent Mixture Mediatimentioning

confidence: 99%

The Integration of Sociality, Monoamines, and Stress Neuroendocrinology in Fish Models: Applications in the Neurosciences

Soares¹,

Maximino²

2018

Preprint

View full text Add to dashboard Cite

Animal-focused research has been crucial for scientific advancement however, in this matter, rodents are still taking a starring role. Coming out from merely being supportive of evidence found in rodents, the use of fish models has slowly taken a more central role and expanded its overall contributions in areas such as social sciences, evolution, physiology, and recently in translational medical research. In neurosciences, zebrafish has been widely adopted, contributing to our understanding of the genetic control of brain processes, and the effects of pharmacological manipulations. However, discussion continues regarding the paradox of function versus structure, when fish and mammals are compared, and on the potentially evolutionarily conserved nature of behaviour across fish species. From the behavioural stand point we explorted aversive/stress and social behaviour in selected fish models, and refer to the extensive contributions of stress and monoaminergic systems. We suggest that, in spite of marked neuroanatomical differences between fish and mammals, stress and sociality are conserved at the behavioural and molecular levels. We also suggest that stress and sociality are mediated by monoamines in predictable and non-trivial ways, and that monoamines could “bridge” the relationship between stress and social behaviour. To reconcile the level of divergence with the level of similarity, neuroanatomy, pharmacology, behavioural analysis, and ecology studies conducted in the laboratory and in nature need to add to each other and enhance our understanding of fish behaviour and ultimately how this all may translate to better model systems for translational studies.

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Evidence for the Involvement of Dopamine in Stress‐Induced Suppression of Reproduction in the Cichlid Fish Oreochromis mossambicus

Cited by 25 publications

References 81 publications

Dopamine receptor agonist bromocriptine restrains the follicular development, hatchling success and puberty in Gambusia affinis

Dopamine receptor agonist bromocriptine restrains the follicular development, hatchling success and puberty in Gambusia affinis

The Integration of Sociality, Monoamines, and Stress Neuroendocrinology in Fish Models: Applications in the Neurosciences

The Integration of Sociality, Monoamines, and Stress Neuroendocrinology in Fish Models: Applications in the Neurosciences

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