Nature and metabolism of carotenoid pigments during the embryogenesis of the European lobster Homarus gammarus (Linné, 1758)

Mantiri, Desy M. H.; Nègre-Sadargues, Geneviève; Charmantier, Guy; Trilles, Jean‐Paul; Milicua, José-Carlos G.; Castillo, René Jiménez

doi:10.1016/0300-9629(96)00054-0

Cited by 25 publications

(13 citation statements)

References 16 publications

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“…This hypothesis is supported by the study of Barrett and Butterworth (1968) who demonstrated that P. minutus gets its carotenoids from its host. Carotenoids, which are lipid constituents, are the main compound of the crustacean vitellus (Mantiri et al 1996). Polymorphus minutus diverts carotenoids for its own development and consequently G. roeseli females become castrated (Bollache et al 2002).…”

Section: Discussionmentioning

confidence: 99%

Does the acanthocephalan parasite Polymorphus minutus modify the energy reserves and antitoxic defences of its intermediate host Gammarus roeseli?

2012

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S U M M A R YIn disturbed environments, infected organisms have to face both parasitic and chemical stresses. Although this situation is common, few studies have been devoted to the effects of infection on hosts' energy reserves and antitoxic defence capacities, while parasite survival depends on host survival. In this study, we tested the consequences of an infection by Polymorphus minutus on the energy reserves (protein, lipid and glycogen) and antioxidant defence capacities (reduced glutathione, γ-glutamylcysteine ligase activity) of Gammarus roeseli males and females, in the absence of chemical stress. Moreover, malondialdehyde concentration was used as a toxicity biomarker. The results revealed that in infected G. roeseli, whatever their gender and the sampling month, protein and lipid contents were lower, but glycogen contents were higher. This could be explained by the fact that the parasite diverts part of the host's energy for its own development. Moreover, glutathione concentrations and γ-glutamylcysteine ligase activity were both lower, which could lead to lower antitoxic defence in the host. These results suggest negative effects on individuals in the case of additional stress (e.g. pollutant exposure). In the absence of chemical stress, the lower malondialdehyde level in infected gammarids could imply a probable protective effect of the parasite.

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Section: Discussionmentioning

confidence: 99%

Does the acanthocephalan parasite Polymorphus minutus modify the energy reserves and antitoxic defences of its intermediate host Gammarus roeseli?

2012

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“…Acanthocephalan parasites are known to affect the reproduction of their intermediate hosts (Bollache et al 2001), and, in particular, to induce partial or total castration in females (Bollache et al 2002). The development of crustacean eggs is highly dependent on carotenoid availability (Gilchrist & Zagalsky 1983;Mantiri et al 1996), such that the uptake of carotenoid by acanthocephalan parasites may be part of a strategy by which they force their intermediate hosts to reallocate energy from reproduction to growth (Baudouin 1975;Hall et al 2007). However, amphipods infected with trematodes also show partial castration ( Thomas et al 1995), although trematodes do not store carotenoids.…”

Section: Discussionmentioning

confidence: 99%

Carotenoid-based colour of acanthocephalan cystacanths plays no role in host manipulation

et al. 2008

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Manipulation by parasites is a catchy concept that has been applied to a large range of phenotypic alterations brought about by parasites in their hosts. It has, for instance, been suggested that the carotenoid-based colour of acanthocephalan cystacanths is adaptive through increasing the conspicuousness of infected intermediate hosts and, hence, their vulnerability to appropriate final hosts such as fish predators. We revisited the evidence in favour of adaptive coloration of acanthocephalan parasites in relation to increased trophic transmission using the crustacean amphipod Gammarus pulex and two species of acanthocephalans, Pomphorhynchus laevis and Polymorphus minutus. Both species show carotenoid-based colorations, but rely, respectively, on freshwater fish and aquatic bird species as final hosts. In addition, the two parasites differ in the type of behavioural alteration brought to their common intermediate host.Pomphorhynchus laevis reverses negative phototaxis in G. pulex, whereas P. minutus reverses positive geotaxis. In aquaria, trout showed selective predation for P. laevis-infected gammarids, whereas P. minutusinfected ones did not differ from uninfected controls in their vulnerability to predation. We tested for an effect of parasite coloration on increased trophic transmission by painting a yellow-orange spot on the cuticle of uninfected gammarids and by masking the yellow-orange spot of infected individuals with inconspicuous brown paint. To enhance realism, match of colour between painted mimics and true parasite was carefully checked using a spectrometer. We found no evidence for a role of parasite coloration in the increased vulnerability of gammarids to predation by trout. Painted mimics did not differ from control uninfected gammarids in their vulnerability to predation by trout. In addition, covering the place through which the parasite was visible did not reduce the vulnerability of infected gammarids to predation by trout. We discuss alternative evolutionary explanations for the origin and maintenance of carotenoidbased colorations in acanthocephalan parasites.

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“…It is well documented that marine invertebrates and crustaceans convert oxygenic carotenoids to retinoids inefficiently (Schiedt et al 1993;Mantiri et al 1995Mantiri et al , 1996. Astaxanthin bioconversion to retinoids may involve further functions during shrimp maturation.…”

Section: Discussionmentioning

confidence: 99%

Induction factors derived from carotenoids and vitamin A during the ovarian maturation of Litopenaeus vannamei

Liñán‐Cabello¹,

Paniagua‐Michel

2004

Aquaculture International

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The functionality of carotenoids and vitamin A as micronutrients in crustaceans is not as well known as it is in vertebrates and certain marine invertebrates. At the onset of critical functions in shrimp, such as ovary maturation, physiological doses of carotenoids may be crucial for the successful bioconversion into highly bioactive compounds such as retinoids. In order to test this hypothesis, female brood stock of Litopenaeus vannamei were injectioned with nine different treatments using retinoic acid, retinol palmitate, trans-b-carotene and astaxanthin. Differing effects on ovarian maturation induction after treatment with trans-b-carotene, astaxanthin and retinol palmitate were observed. Astaxanthin (18.6 lg g À1 ), and retinol palmitate in concentrations of 10.6 and 133 lg g À1 enhanced ovary maturation in 38% of the injected females. On the other hand, trans-b-carotene led to a higher diversity of retinoids in the ovary and eyestalk, vis-a`-vis all-transretinal, 13-cis-retinal, all-trans-retinol and 13-cis-retinol in the eyestalk. Patterns of isomerization of retinoids associated with the level of ovary maturation were observed in the eyestalks and ovaries. The functionality of retinoids in gene transcription and cellular differentiation must be of great importance during the differentiation of the oocyte, embryonic development and metamorphosis of L. vannamei.

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Nature and metabolism of carotenoid pigments during the embryogenesis of the European lobster Homarus gammarus (Linné, 1758)

Cited by 25 publications

References 16 publications

Does the acanthocephalan parasite Polymorphus minutus modify the energy reserves and antitoxic defences of its intermediate host Gammarus roeseli?

Does the acanthocephalan parasite Polymorphus minutus modify the energy reserves and antitoxic defences of its intermediate host Gammarus roeseli?

Carotenoid-based colour of acanthocephalan cystacanths plays no role in host manipulation

Induction factors derived from carotenoids and vitamin A during the ovarian maturation of Litopenaeus vannamei

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