Thierry Rigaud
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View article: Differences in specificity, development time and virulence between two acanthocephalan parasites, infecting two cryptic species of Gammarus fossarum
Differences in specificity, development time and virulence between two acanthocephalan parasites, infecting two cryptic species of Gammarus fossarum Open
Multi-host parasites can exploit various host species that differ in abundance and susceptibility to infection, which will contribute unequally to their transmission and fitness. Several species of acanthocephalan manipulative parasites (a…
View article: Infection risk by oral contamination does not induce immune priming in the mealworm beetle (Tenebrio molitor) but triggers behavioral and physiological responses
Infection risk by oral contamination does not induce immune priming in the mealworm beetle (Tenebrio molitor) but triggers behavioral and physiological responses Open
In invertebrates, immune priming is the ability of individuals to enhance their immune response based on prior immunological experiences. This adaptive-like immunity likely evolved due to the risk of repeated infections by parasites in the…
View article: Temporal stability of sex ratio distorter prevalence in natural populations of the isopod<i>Armadillidium vulgare</i>
Temporal stability of sex ratio distorter prevalence in natural populations of the isopod<i>Armadillidium vulgare</i> Open
In the terrestrial isopod Armadillidium vulgare , many females produce progenies with female-biased sex ratios due to two feminizing sex ratio distorters (SRD): Wolbachia endosymbionts and a nuclear non-mendelian locus called the f element…
View article: Time-course of antipredator behavioral changes induced by the helminth Pomphorhynchus laevis in its intermediate host Gammarus pulex: the switch in manipulation according to parasite developmental stage differs between behaviors
Time-course of antipredator behavioral changes induced by the helminth Pomphorhynchus laevis in its intermediate host Gammarus pulex: the switch in manipulation according to parasite developmental stage differs between behaviors Open
Many trophically transmitted parasites with complex life cycles manipulate their intermediate host’s antipredatory defenses in ways facilitating their transmission to final host by predation. Some parasites also protect the intermediate ho…
View article: Widespread infection, diversification and old host associations of Nosema Microsporidia in European freshwater gammarids (Amphipoda)
Widespread infection, diversification and old host associations of Nosema Microsporidia in European freshwater gammarids (Amphipoda) Open
The microsporidian genus Nosema is primarily known to infect insects of economic importance stimulating high research interest, while other hosts remain understudied. Nosema granulosis is one of the formally described Nosema species infect…
View article: Time-course of antipredator behavioral changes induced by the helminth <i>Pomphorhynchus laevis</i> in its intermediate host <i>Gammarus pulex</i> : the switch in manipulation according to parasite developmental stage differs between behaviors
Time-course of antipredator behavioral changes induced by the helminth <i>Pomphorhynchus laevis</i> in its intermediate host <i>Gammarus pulex</i> : the switch in manipulation according to parasite developmental stage differs between behaviors Open
Many trophically transmitted parasites with complex life cycles manipulate their intermediate host’s antipredatory defenses in ways facilitating their transmission to final host by predation. Some parasites also protect the intermediate ho…
View article: Hooking the scientific community on thorny-headed worms: interesting and exciting facts, knowledge gaps and perspectives for research directions on Acanthocephala
Hooking the scientific community on thorny-headed worms: interesting and exciting facts, knowledge gaps and perspectives for research directions on Acanthocephala Open
Although interest in Acanthocephala seems to have reached only a small community of researchers worldwide, we show in this opinion article that this group of parasites is composed of excellent model organisms for studying key questions in …
View article: Heterogeneous distribution of sex ratio distorters in natural populations of the isopod <i>Armadillidium vulgare</i>
Heterogeneous distribution of sex ratio distorters in natural populations of the isopod <i>Armadillidium vulgare</i> Open
In the isopod Armadillidium vulgare , many females produce progenies with female-biased sex ratios, owing to two feminizing sex ratio distorters (SRD): Wolbachia endosymbionts and the f element. We investigated the distribution and populat…
View article: 616. <i>Tenebrio molitor</i> genomic structure among available populations
616. <i>Tenebrio molitor</i> genomic structure among available populations Open
Part 35. #616
View article: Senescence of the immune defences and reproductive trade-offs in females of the mealworm beetle, Tenebrio molitor
Senescence of the immune defences and reproductive trade-offs in females of the mealworm beetle, Tenebrio molitor Open
In the theory of ageing, it has been assumed that ageing is associated with a decline in somatic defences, including the immune system, as a consequence of a trade-off with reproduction. While overall immunity suffers from age-related dete…
View article: Heterogeneous distribution of sex ratio distorters in natural populations of the isopod<i>Armadillidium vulgare</i>
Heterogeneous distribution of sex ratio distorters in natural populations of the isopod<i>Armadillidium vulgare</i> Open
In the isopod Armadillidium vulgare , many females produce progenies with female-biased sex ratios, due to two feminizing sex ratio distorters (SRD): Wolbachia endosymbionts and the f element. We investigated the distribution and populatio…
View article: Chromosome-scale assembly of the yellow mealworm genome
Chromosome-scale assembly of the yellow mealworm genome Open
Background: The yellow mealworm beetle, Tenebrio molitor, is a promising alternative protein source for animal and human nutrition and its farming involves relatively low environmental costs. For these reasons, its industrial scale product…
View article: “Born with a silver spoon in the mouth has bad sides too”: Experimentally increasing growth rate enhances individual quality but accelerates reproductive senescence in females of the mealworm beetle, Tenebrio molitor
“Born with a silver spoon in the mouth has bad sides too”: Experimentally increasing growth rate enhances individual quality but accelerates reproductive senescence in females of the mealworm beetle, Tenebrio molitor Open
Senescence occurs because of the decline of the strength of selection with age, allowing late-life reduced performances not being counter selected. From there, several phenomena may explain late-life reduced performances, such as the accum…
View article: Chromosome-scale assembly of the yellow mealworm genome
Chromosome-scale assembly of the yellow mealworm genome Open
Background: The yellow mealworm beetle, Tenebrio molitor, is a promising alternative protein source for animal and human nutrition and its farming involves relatively low environmental costs. For these reasons, its industrial scale product…
View article: Age‐specific fecundity under pathogenic threat in an insect: Terminal investment versus reproductive restraint
Age‐specific fecundity under pathogenic threat in an insect: Terminal investment versus reproductive restraint Open
The terminal investment hypothesis predicts that as an organism's prospects for survival decrease, through age or when exposed to a pathogenic infection, it will invest more in reproduction, which should trade‐off against somatic maintenan…
View article: Chromosome-scale assembly of the yellow mealworm genome
Chromosome-scale assembly of the yellow mealworm genome Open
Background: The yellow mealworm beetle, Tenebrio molitor, is a promising alternative protein source for animal and human nutrition and its farming involves relatively low environmental costs. For these reasons, its industrial scale product…
View article: Draft Genome Sequences of Thelohania contejeani and Cucumispora dikerogammari, Pathogenic Microsporidia of Freshwater Crustaceans
Draft Genome Sequences of Thelohania contejeani and Cucumispora dikerogammari, Pathogenic Microsporidia of Freshwater Crustaceans Open
We announce the draft genome sequences of two pathogenic microsporidia of European freshwater crustaceans, Thelohania contejeani (the causative agent of porcelain disease) and Cucumispora dikerogammari . Both species are implicated in mass…
View article: Comparative Genomics of Strictly Vertically Transmitted, Feminizing Microsporidia Endosymbionts of Amphipod Crustaceans
Comparative Genomics of Strictly Vertically Transmitted, Feminizing Microsporidia Endosymbionts of Amphipod Crustaceans Open
Microsporidia are obligate intracellular eukaryotic parasites of vertebrates and invertebrates. Microsporidia are usually pathogenic and undergo horizontal transmission or a mix of horizontal and vertical transmission. However, cases of no…
View article: Late‐life reproduction in an insect: Terminal investment, reproductive restraint or senescence
Late‐life reproduction in an insect: Terminal investment, reproductive restraint or senescence Open
The terminal investment, reproductive restraint or senescence theories may explain individual late‐life patterns of reproduction. The terminal investment hypothesis predicts that individuals increase reproductive allocation late in life as…
View article: Origin of the natural variation in the storage of dietary carotenoids in freshwater amphipod crustaceans
Origin of the natural variation in the storage of dietary carotenoids in freshwater amphipod crustaceans Open
Carotenoids are diverse lipophilic natural pigments which are stored in variable amounts by animals. Given the multiple biological functions of carotenoids, such variation may have strong implications in evolutionary biology. Crustaceans s…
View article: Sex-specific patterns of senescence in artificial insect populations varying in sex-ratio to manipulate reproductive effort
Sex-specific patterns of senescence in artificial insect populations varying in sex-ratio to manipulate reproductive effort Open
Background: The disposable soma theory of ageing assumes that organisms optimally trade-off limited resources between reproduction and longevity to maximize fitness. Early reproduction should especially trade-off against late reproduction …
View article: Sex-specific patterns of senescence in artificial insect populations varying in sex-ratio to manipulate reproductive effort
Sex-specific patterns of senescence in artificial insect populations varying in sex-ratio to manipulate reproductive effort Open
Background: The disposable soma theory of ageing assumes that organisms optimally trade-off limited resources between reproduction and longevity to maximize fitness. Early reproduction should especially trade-off against late reproduction …