A physiological interpretation of pattern changes in a flatfish

Burton, D.

doi:10.1111/j.1095-8649.2008.01960.x

Cited by 10 publications

(11 citation statements)

References 31 publications

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“…High levels of b-adrenoceptor agonists can also have an inhibitory effect on the melanosome aggregation produced by noradrenaline or by electrical stimulation (Mayo and Burton 1998b). Melanophores of Pseudopleuronectes americanus display pattern-related ''transition ranges'' in noradrenaline concentrations between those inducing b-adrenoceptor mediated melanosome dispersion and those stimulating a-adrenoceptor mediated aggregation (Burton 2008), with distinct threshold values for individual pattern components (Burton et al 1995;Burton 2008). The relative extent of the noradrenaline ''transition range'' concentrations can be presented as dark bands [ general background [ white spots (Burton 2008).…”

Section: Melanophore Adrenoceptors and Their ''Transition Ranges''mentioning

confidence: 99%

“…Alternatively, the local variations in adrenoceptor transition ranges (Burton 2008) can influence the direction and extent of localised melanophore responses to transduction of the ''mononeuronic'' neural input to these effectors. This receptor based variation would facilitate pattern control based on the Iwata and Fukuda model, without necessarily implying increased complexity in the cerebral centres.…”

Section: Integumentary Variables and Neural Input Transductionmentioning

confidence: 99%

“…Melanophores of Pseudopleuronectes americanus display pattern-related ''transition ranges'' in noradrenaline concentrations between those inducing b-adrenoceptor mediated melanosome dispersion and those stimulating a-adrenoceptor mediated aggregation (Burton 2008), with distinct threshold values for individual pattern components (Burton et al 1995;Burton 2008). The relative extent of the noradrenaline ''transition range'' concentrations can be presented as dark bands [ general background [ white spots (Burton 2008). As a result of such variations in ''transition range'', a physiological concentration of noradrenaline has the capacity to produce simultaneously, melanosome aggregation and dispersion in different localised areas of the pattern.…”

Section: Melanophore Adrenoceptors and Their ''Transition Ranges''mentioning

confidence: 99%

“…In this model it is proposed that between localised areas within flatfish patterns subtle gradations in balance between a-and b-adrenoceptors (Mayo and Burton 1998a), and their transition ranges (Burton 2008), affect the extent and direction of melanosome movement within each area. Local cytosolic cAMP activity levels in response to changes in background are mediated antagonistically Rev Fish Biol Fisheries (2010) 20:31-46 39 through a 2 -and b 1 adrenoceptors.…”

Section: Intracellular Secondary Messengersmentioning

confidence: 99%

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Flatfish (Pleuronectiformes) chromatic biology

Burton

2009

Rev Fish Biol Fisheries

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The following aspects of flatfish skin coloration are reviewed. (1) The variety of chromatophores which contribute to the complex integumentary patterns; their relative sizes and numerical distribution.(2) Interspecific variations and intraspecific changes in skin patterns. (3) Ambicolouration and hypomelanosis and their economic consequences. Discussion of nutrition, illumination, stress, endocrine and paracrine factors which may influence both these phenomena, as well as the normal pattern morphology, including putative melanogenesis stimulating and inhibitory factors within the integument. (4) Cryptic responses to substrate texture and colour, as well as to stressors, involving chromatophore morphological and physiological chromatic interaction. (5) Regulation of pattern changes; the simultaneous production by a single neurone type (adrenergic) of both paling and darkening in different pattern areas through variations in ''adrenoceptor transition ranges''.

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Section: Melanophore Adrenoceptors and Their ''Transition Ranges''mentioning

confidence: 99%

Section: Integumentary Variables and Neural Input Transductionmentioning

confidence: 99%

Section: Melanophore Adrenoceptors and Their ''Transition Ranges''mentioning

confidence: 99%

Section: Intracellular Secondary Messengersmentioning

confidence: 99%

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Flatfish (Pleuronectiformes) chromatic biology

Burton

2009

Rev Fish Biol Fisheries

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“…Physiological colour change (controlled by the sympathetic nervous system) (Burton, 2008) occurs over short time scales (minutes to days) and involves two hormones: α-melanocyte stimulating hormone (α-MSH) and melanin-concentrating hormone (MCH). α-MSH causes melanosomes to disperse, making the fish appear darker, while MCH causes melanosomes to aggregate, lightening the appearance of the fish (Logan et al, 2006;Mills and Patterson, 2009).…”

Section: Introductionmentioning

confidence: 99%

Costs of colour change in fish: food intake and behavioural decisions

Rodgers

Gladman

Corless

et al. 2013

Journal of Experimental Biology

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SUMMARYMany animals, particularly reptiles, amphibians, fish and cephalopods, have the ability to change their body colour, for functions including thermoregulation, signalling and predator avoidance. Many fish plastically darken their body colouration in response to dark visual backgrounds, and this functions to reduce predation risk. Here, we tested the hypotheses that colour change in fish (1) carries with it an energetic cost and (2) affects subsequent shoal and habitat choice decisions. We demonstrate that guppies (Poecilia reticulata) change colour in response to dark and light visual backgrounds, and that doing so carries an energetic cost in terms of food consumption. By increasing food intake, however, guppies are able to maintain growth rates and meet the energetic costs of changing colour. Following colour change, fish preferentially choose habitats and shoals that match their own body colouration, and maximise crypsis, thus avoiding the need for further colour change but also potentially paying an opportunity cost associated with restriction to particular habitats and social associates. Thus, colour change to match the background is complemented by behavioural strategies, which should act to maximise fitness in variable environments.

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