Some aspects of Artemia biology affected by cestode parasitism

Amat, Francisco; Gozalbo, A.; Navarro, Juan Carlos; Hontoria, Francisco; Var�, I.

doi:10.1007/bf00025985

Cited by 49 publications

(47 citation statements)

References 18 publications

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“…In our case, this was only observed in infected males. Among the effects of cestode parasitism in Artemia, the reduction in the reproductive capacity (Amat et al 1991a) or castration are the most dramatic ones (Amat et al 1991b). In the Iberian populations, infected females produced only 10-12 offspring/brood against 80 offspring in uninfected ones.…”

Section: Discussionmentioning

confidence: 99%

“…In the Iberian populations, infected females produced only 10-12 offspring/brood against 80 offspring in uninfected ones. This is a way to increase the profitability of the available energy by parasites (Amat et al 1991a). In the population of Sebkha Ez-Zemoul, the infected females were almost twice less fertile than the uninfected ones, whereas those of Chott Marouane, living in harsh conditions of salinity, were completely infertile.…”

Section: Discussionmentioning

confidence: 99%

“…The red colour associated with modifications of feeding behaviour and carotenoids accumulation make hosts more visible by water birds (Thiéry et al 1990, Amat et al 1991a, Robert and Gabrion 1991, Varó et al 2000, Sánchez et al 2006. Amat et al (1991b) found that the parasitized individuals have a higher lipid level, attain bigger size and live longer than the uninfected ones in order to increase the profitability of the prey, which would be a phenomenon of "favorisation" (Combes 1991).…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

The parasitism of Flamingolepis liguloides (Gervais, 1847) (Cestoda, Hymenolepididae) in Artemia salina (Crustacea, Branchiopoda) in two saline lakes in Algeria

Amarouayache

Derbal

Kara

2009

Acta Parasitologica

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

The parasitism of Flamingolepis liguloides (Gervais, 1847) (Cestoda, Hymenolepididae) in Artemia salina (Crustacea, Branchiopoda) in two saline lakes in Algeria

Amarouayache

Derbal

Kara

2009

Acta Parasitologica

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“…Similar results have previously been found in brine shrimps Artemia ssp. parasitized by cestodes (Amat et al 1991) and in Gammarus pulex parasitized by acantocephalans (Plaistow et al 2001). These parasites are phylogenetically unrelated but they evolved under similar ecological pressures for their transmission as they require the predation of the crustacea by a vertebrate predator.…”

Section: Discussionmentioning

confidence: 99%

Ecology of parasitically modified populations: a case study from a gammarid-trematode system

Ponton¹,

Biron²,

Joly³

et al. 2005

Mar. Ecol. Prog. Ser.

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Examples of behavioural manipulation by parasites are numerous but the consequences of these phenomena on the ecology of host populations remains unclear. Through its effect on Gammarus insensibilis behaviour, the salt marsh trematode Microphallus papillorobustus splits its host population into 2 discrete subunits, one living at the surface (infected individuals) and the other living near the bottom (uninfected individuals). Here, we compare several biological characteristics of gammarids from these 2 spatially segregated subunits. Infected females were smaller and thus less fecund than uninfected females. They also had a longer intermoult duration. The mean body size of infected and uninfected males was not significantly different. However, energy reserves were significantly different: infected males possessed higher glycogen and lipid contents and lower glucose content compared to uninfected males. Interestingly, uninfected males living at the surface (those paired with infected females) also displayed higher energy reserves compared to uninfected conspecifics living in the bottom subunit (those paired with uninfected females). In both of the 2 subunits, there was no significant relationship between male sexual performance (measured through the size of their partner) and their levels of energy reserves. The pattern of size-assortative pairing was not significantly different between pairs from the surface and from the bottom, but male sexual performances were on average smaller for males from the surface subunit. Our results also indicated that the benefits of preferring large more fecund females are however likely to be counterbalanced by the higher mortality rate of these females compared to smaller ones during the subsequent intermoult. Because such a phenomenon directly influences the number of juveniles produced, it reduces the inequalities between the true sexual performances (i.e. number of descendants) achieved by males from the surface and from the bottom. This study supports the idea that infected gammarids are not simply normal hosts with an aberrant behaviour, they are more deeply modified in ways that may substantially alter host population ecology.

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“…As with trematodes and acanthocephalans, many cestode species alter the behaviour of their intermediate hosts to enhance trophic transmission to final definitive hosts (Amat et al, 1991;Gabrion et al, 1982;Robert and Gabrion, 1991;Sánchez et al, 2006;Sánchez et al, 2007). Recently, a parasito-proteomics study using SELDI-TOF MS was performed in order to compare the head proteome of uninfected individuals of Artemia parthenogenetica (Bowen and Stirling) (Branchiopoda: Anostraca) with that of infected individuals manipulated by one of the three following cestode species: (1) Flamingolepis liguloides (Gervais) (Cestoda, Hymenolepididea) infecting flamingos, (2) Confluaria podicipina (Szymanski) (Cestoda, Hymenolepididea) infecting grebes and (3) Anomotaenia tringae (Burt) (Cestoda, Diphyllidea) infecting shore birds (Sánchez et al, 2009).…”

Section: Artemia-cestode Associationsmentioning

confidence: 99%

Host–parasite molecular cross-talk during the manipulative process of a host by its parasite

Biron

Loxdale

2013

Journal of Experimental Biology

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SummaryMany parasite taxa are able to alter a wide range of phenotypic traits of their hosts in ways that seem to improve the parasiteʼs chance of completing its life cycle. Host behavioural alterations are classically seen as compelling illustrations of the ʻextended phenotypeʼ concept, which suggests that parasite genes have phenotype effects on the host. The molecular mechanisms and the host-parasite cross-talk involved during the manipulative process of a host by its parasite are still poorly understood. In this Review, the current knowledge on proximate mechanisms related to the ʻparasite manipulation hypothesisʼ is presented. Parasite genome sequences do not themselves provide a full explanation of parasite biology nor of the molecular cross-talk involved in host-parasite associations. Recently, first-generation proteomics tools have been employed to unravel some aspects of the parasite manipulation process (i.e. proximate mechanisms and evolutionary convergence) using certain model arthropodhost-parasite associations. The pioneer proteomics results obtained on the manipulative process are here highlighted, along with the many gaps in our knowledge. Candidate genes and biochemical pathways potentially involved in the parasite manipulation are presented. Finally, taking into account the environmental factors, we suggest new avenues and approaches to further explore and understand the proximate mechanisms used by parasite species to alter phenotypic traits of their hosts.

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Some aspects of Artemia biology affected by cestode parasitism

Cited by 49 publications

References 18 publications

The parasitism of Flamingolepis liguloides (Gervais, 1847) (Cestoda, Hymenolepididae) in Artemia salina (Crustacea, Branchiopoda) in two saline lakes in Algeria

The parasitism of Flamingolepis liguloides (Gervais, 1847) (Cestoda, Hymenolepididae) in Artemia salina (Crustacea, Branchiopoda) in two saline lakes in Algeria

Ecology of parasitically modified populations: a case study from a gammarid-trematode system

Host–parasite molecular cross-talk during the manipulative process of a host by its parasite

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