Carotenoids and their derivatives in organs of the maturing female crayfish Cherax quadricarinatus

Sagi, Amir; Rise, Moshe; Khalaila, Isam; Arad, Shoshana

doi:10.1016/0305-0491(95)00069-0

Cited by 56 publications

(23 citation statements)

References 12 publications

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“…This unidentified carotenoid from a previous study was not differentially accumulated in wild-caught Reds and Whites (Wade et al, 2005), suggesting a potential role in carotenoid storage or intermediary metabolism rather than regulation of shell colour. Hypodermal tissue has been shown to store excess carotenoids Dall et al, 1995;Okada et al, 1994;Sagi et al, 1995), further supporting the involvement of specific carotenoid intermediates or modified astaxanthin esters in the transport, storage and incorporation of astaxanthin into the exoskeleton. The understanding of these metabolic processes and their regulation requires further investigation to best optimise the use of carotenoids during crustacean aquaculture.…”

Section: Discussionmentioning

confidence: 83%

Control of shell colour changes in the lobster, Panulirus cygnus

Wade

Melville‐Smith²,

Degnan

et al. 2008

Journal of Experimental Biology

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SUMMARYThe transition from juvenile to adult in the Australian western rock lobster, Panulirus cygnus (George), is preceded by a mass migration from inshore nursery reefs to offshore breeding grounds. Associated with this migration is a moult which results in the animals that are due to migrate undergoing characteristic colour change from deep red to pale pink, known as the 'white' phase, which is believed to be triggered by environmental factors. To investigate this phenomenon, the colour change of wild-caught animals was measured over two separate years in response to two important modifiers of crustacean shell colour, dietary carotenoid and background substrate colour. Changes in shell colour during this colour transition period were influenced more greatly by other factors independent of diet or background substrate and no mass colour change was induced during this time. Shell colour measurement and carotenoid quantification confirmed the presence of animals similar to wild-caught 'whites', regardless of the treatment. From these experimental observations we infer that the 'white' phase of the western rock lobster is not triggered by dietary modification or in response to background substrate. We propose that this transition is under the regulation of an ontogenetic program activated at a specific moult, which induces presently unidentified molecular changes linked to shell colour production. This unique colour transition may have evolved to provide protective camouflage during migration, and serves as an excellent model to study the genetic mechanisms underlying crustacean shell colouration. These data also provide insight into the changes in carotenoid levels induced by environmental factors, and the ability to modify crustacean shell colour in aquaculture. Supplementary material available online at

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Section: Discussionmentioning

confidence: 83%

Control of shell colour changes in the lobster, Panulirus cygnus

Wade

Melville‐Smith²,

Degnan

et al. 2008

Journal of Experimental Biology

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“…Both types of sunscreening metabolites and pigments are known to be incorporated into the cuticle (Schiedt et al, 1993) and tissues of aquatic organisms (Karentz et al, 1991;Carefoot et al, 2000;Newman et al, 2000). Sagi et al (1995) detected 66% on average of total tissue carotenoids, mainly astaxanthin, in the cuticle of crayfish Cherax quadricarinatus, suggesting a photoprotective role of the exoskeleton. Maximal absorbance of astaxanthin (485 nm) is within the third, undefined range of the carapace absorbance spectra in our amphipods (480-530).…”

Section: Carapace As Physical Absorbance Barrier Against Uv-photons Imentioning

confidence: 99%

UV-tolerance and instantaneous physiological stress responses of two Antarctic amphipod species Gondogeneia antarctica and Djerboa furcipes during exposure to UV radiation

Obermüller

Puntarulo

Abele

2007

Marine Environmental Research

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We investigated the shielding against solar ultraviolet radiation and inducible damage, as well as the short-term response of whole animal metabolic rate in two Antarctic shallow water amphipod species. Light absorbance by the carapace of Gondogeneia antarctica and Djerboa furcipes was higher in the UVR (UVB + UVA) range (42.1% and 54.5% on average respectively) compared to the PAR (photosynthetically active radiation) range (38.1% and 50.1% respectively) of the solar spectrum. Bands of higher absorbance correlated with maximal absorbance ranges of sunscreening compounds indicating mycosporine-like amino acids (MAAs) and carotenoids to be innate compounds of the exoskeleton of these species. Though the antioxidant enzyme catalase was photoinhibited, protein damage products did not accumulate under experimental exposure to a daily dose of 6.84 kJ m À2 d À1 UVB, 66.24 kJ m À2 d À1 UVA and 103.14 kJ m À2 d À1 PAR. Animal oxygen consumption during UV-exposure was measured as an indicator of immediate behavioural and physiological stress response. UVB as well as UVA induced a response with altered and highly variable respiratory intensity. Our findings indicate that sub-lethal UVR exposure causes increased oxygen consumption in polar amphipods due to radiation avoidance, shelter seeking behaviour, and presumably also from cellular repair processes.

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“…Structurally, they allow for varying levels of light absorbance and appear blue, red, orange, or yellow, absorbing at wavelengths of 420-480nm (Gilchrist and Lee 1972, Kour and Subramoniam 1992, Zadorozhny et al 2007). Astaxanthin, for example is generally found to be in high abundance in the carapace of many aquatic crustaceans and usually it appears as a brown-red or reddish purple color to human eyes (Schiedt et al 1993, Sagi et al 1995, Wade et al 2005. It is easily oxidized into astacene upon prolonged exposure to heat and light.…”

Section: Introduction To Carotenoidsmentioning

confidence: 99%

Effects of Season, Size and Parasitism by the Acanthocephalan, Profilicollis altmani, on the Carotenoid Concentration and Composition of the Pacific Mole Crab, Emerita analoga

Constancio¹

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Carotenoids and their derivatives in organs of the maturing female crayfish Cherax quadricarinatus

Cited by 56 publications

References 12 publications

Control of shell colour changes in the lobster, Panulirus cygnus

Control of shell colour changes in the lobster, Panulirus cygnus

UV-tolerance and instantaneous physiological stress responses of two Antarctic amphipod species Gondogeneia antarctica and Djerboa furcipes during exposure to UV radiation

Effects of Season, Size and Parasitism by the Acanthocephalan, Profilicollis altmani, on the Carotenoid Concentration and Composition of the Pacific Mole Crab, Emerita analoga

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