Background adaptation and water acidification affect pigmentation and stress physiology of tilapia, Oreochromis mossambicus

Salm, A.L. van der; Spanings, F.A.T.; Gresnigt, Ria; Bonga, S.E. Wendelaar; Flik, G.

doi:10.1016/j.ygcen.2005.04.017

Cited by 30 publications

(27 citation statements)

References 32 publications

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“…Monoacetylation of the N-terminus may contribute to an increase in the pigment-dispersing activity of α-MSH-related peptides in goldfish because the α-MSH activity was found to be slightly but significantly higher than that of Des-Ac-α-MSH when their effects were compared at low concentrations. Similar enhancing effects of pigment dispersion caused by monoacetylation have also been observed in grass carp, tilapia, and frogs (Kawauchi et al, 1984; Ebelre, 1988; van der Salm et al, 2005). Only one mcr subtype appears to be expressed in the melanophores of these species.…”

Section: α-Msh Activity: Relationship With Acetylation and Mcrs Expresupporting

confidence: 57%

Melanocortin Systems on Pigment Dispersion in Fish Chromatophores

Kobayashi¹,

Mizusawa²,

Saito³

et al. 2012

Front. Endocrin.

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α-Melanocyte-stimulating hormone (α-MSH) is responsible for pigment dispersion in the chromatophores of fish and other tetrapods such as amphibians and reptiles. Recently, we discovered that α-MSH did not always stimulate pigment dispersion because this hormonal peptide exerted no effects on the melanophores of flounders. We assumed that the reduction of α-MSH activity was related to the co-expression of different α-MSH receptor subtypes – termed melanocortin receptors (MCR) – a member of G-protein-coupled receptors (GPCR) – based on several reports demonstrating that GPCR forms heterodimers with various properties that are distinct from those of the corresponding monomers. In this review, we summarize the relationships between the pigment-dispersing activity of α-MSH-related peptides, molecular forms of α-MSH-related peptides, and mcr subtypes expressed in fish chromatophores.

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Section: α-Msh Activity: Relationship With Acetylation and Mcrs Expresupporting

confidence: 57%

Melanocortin Systems on Pigment Dispersion in Fish Chromatophores

Kobayashi¹,

Mizusawa²,

Saito³

et al. 2012

Front. Endocrin.

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“…(), Oncorhynchus mykiss (Walbaum 1792) kept in white tanks actively expressed the MCH hormone, which showed an inverse correlation to cortisol production in this species. The production of α‐MSH hormone during adaptation to a black colour environment in fishes has been associated to corticotropic activity that stimulates the release of cortisol and other stress related compounds (Lamers et al ., ; Höglund et al ., ; Van der Salm et al ., ). For the L .…”

Section: Discussionmentioning

confidence: 97%

“…In Salmo trutta L. 1758, adaptation to a black environment increases the endocrine stress response, with higher levels of ACTH and plasma cortisol (Gilham & Baker, ), as has also been found for C . carpio (Papoutsoglou et al ., ; Ebrahimi, ), Oreochromis mossambicus (Peters 1852) (Van der Salm et al ., ) and Pagrus auratus (Forster 1801) (Doolan et al ., ). According to Green et al .…”

Section: Discussionmentioning

confidence: 99%

The effect of environmental colour on the growth, metabolism, physiology and skin pigmentation of the carnivorous freshwater catfish Lophiosilurus alexandri

Costa

Mattioli

Silva

et al. 2016

Journal of Fish Biology

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The growth, physiology and skin pigmentation of pacamã Lophiosilurus alexandri juveniles were evaluated in an experiment using different tank colours (white, yellow, green, blue, brown and black) over an 80 day period. The tank colours did not cause significant differences to final body mass, total length, survival rate, carcass composition (moisture, crude protein, ash, ether extract, calcium, phosphorus, energy), or to plasma protein, triglyceride and cholesterol values. Haematocrit values, however, were highest for fish kept in white tanks (ANOVA P < 0·05), while the greatest haemoglobin levels were recorded for fish kept in blue and brown tanks (P < 0·01). The concentrations of cortisol (P < 0·001) and glucose (P < 0·01) were the most in fish in the black tanks. Tank colour affected skin pigmentation significantly, with fish in white tanks having the highest values of L* (brightness) and the lowest values in blue and black tanks. L*, however, decreased in all treatments throughout the experiment. C* increased significantly over the course of the experiment in fish kept in white tanks. Similar increases of C* were recorded in the other treatments but to a lesser extent. The use of black tanks during the cultivation of L. alexandri caused stress and should be avoided. Cultivation in white and yellow tanks produced individuals with a pale skin colour, while cultivation in blue and black tanks resulted in juveniles with a darker and more pigmented skin.

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“…During the culture of aquatic animals, changes in pigmentation pattern and intensity are induced by changing the tank color (Fujimoto et al 1991; Baker et al 2002). The color of the aquaculture environment has reportedly affected the color of red porgy, Pagrus pagrus (Van der Salm et al 2005), Atlantic cod, Gadus morhua (Bransden et al 2005), sole, Solea solea (Ellis et al 1997), and medaka, Oryzias latipes (Sugimoto 1993).…”

mentioning

confidence: 99%

“…The response of fish skin color to background color varied from fish species and age. Red porgy, P. pagrus , kept in a white background had lighter color than when they were kept in a red background (Van der Salm et al 2005). Similarly, sole, S. solea, could match their skin color “tone” to the surrounding background under captivity (Ellis et al 1997).…”

mentioning

confidence: 99%

Impact of Background on Color Performance of False Clownfish, Amphiprion ocellaris, Cuvier

Yasir

Qin

2009

J World Aquaculture Soc

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Color performance of false clownfish, Amphiprion ocellaris, Cuvier was first examined at four color backgrounds (blue, green red, and white) for 4 wk, then all fish were transferred to a white background for another 4 wk to test whether the impact of background colors on fish skin could have a lasting effect when the environment colors are changed. The experiment was conducted in 10‐L rectangular plastic buckets with three replicates. Thirty fish were stocked in each bucket and three fish were randomly sampled from each tank in Weeks 1, 4, and 8. The color hue, saturation, and brightness were quantified using image analysis. In addition to the whole body analysis, each fish image was divided into ventral and dorsal parts to examine the body position‐dependent response. Furthermore, color differences among the dorsal fin, anal fin, ventral fin, and caudal fin were also quantified. Blue or green background enhanced red orange color on fish skin, whereas white background made fish color brighter. Irrespective of background color, the dorsal side of fish exhibited more red orange, but the color was less bright and less saturated than that of ventral side. Upper fins (dorsal and caudal fins) were more red orange in a blue background than in a white background. Transferring fish from colored backgrounds to a white background made the fish skin and fins brighter, the color of ventral body and ventral fins less saturated, and the bottom fins more yellow orange. The results indicate that blue or green background could strengthen the orange color, whereas white background made fish color less saturated but brighter. The impact of background on the performance of fish color is temporary and likely to disappear when environmental color changes.

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Background adaptation and water acidification affect pigmentation and stress physiology of tilapia, Oreochromis mossambicus

Cited by 30 publications

References 32 publications

Melanocortin Systems on Pigment Dispersion in Fish Chromatophores

Melanocortin Systems on Pigment Dispersion in Fish Chromatophores

The effect of environmental colour on the growth, metabolism, physiology and skin pigmentation of the carnivorous freshwater catfish Lophiosilurus alexandri

Impact of Background on Color Performance of False Clownfish, Amphiprion ocellaris, Cuvier

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