Family-Level Covariation Between Parasite Resistance and Mating System in a Hermaphroditic Freshwater Snail

Wiehn, Jürgen; Kopp, Kirstin; Rezzonico, Stefano; Karttunen, Satu; Jokela, Jukka

doi:10.1554/0014-3820(2002)056[1454:flcbpr]2.0.co;2

Cited by 11 publications

(22 citation statements)

References 36 publications

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“…The nonsignificant effect of mating system on susceptibility is in line with other experimental studies, as most have failed to find an overall significant effect of inbreeding on parasitism (Strauss and Karban 1994;Matheson et al 1995;Núñ ez-Farfán et al 1996;Stevens et al 1997;Haag et al 2003;Salathè and Ebert 2003; but see also Ouborg et al 2000;Carr and Eubanks 2002;Wiehn et al 2002). In contrast, many studies of natural populations have revealed that relatively more inbred individuals and populations tend to suffer more from parasitic diseases than outbred individuals and populations (Mulvey et al 1987;Coltman et al 1999;Meagh-FIG.…”

Section: Discussionsupporting

confidence: 64%

“…Did the experimental set-ups mimic natural conditions closely enough to find a true effect of mating system? Perhaps not, as in most experiments, including ours, parasites do not share a coevolutionary history with the hosts (Núñ ez-Farfán et al 1996;Stevens et al 1997;Carr and Eubanks 2002;Wiehn et al 2002;Carr et al 2003;Haag et al 2003;Salathè and Ebert 2003; but for exceptions see Strauss and Karban 1994;Ouborg et al 2000). More experimental studies taking the coevolutionary history of hosts and parasites into account are desired for a better understanding of how parasites may affect mating system evolution.…”

Section: Discussionmentioning

confidence: 77%

“…Equivocal results have been obtained in experimental tests with various animal and plant systems. In some studies, no effect of inbreeding to parasite/ herbivore resistance was found (Matheson et al 1995;Núñez-Farfán et al 1996;Salathè and Ebert 2003), while in studies where inbreeding increased the effects of parasitism, the effects were seen in some populations, but not in others (Carr and Eubanks 2002;Wiehn et al 2002). Some studies found FIG.…”

mentioning

confidence: 97%

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The Effects of Mating System and Genetic Variability on Susceptibility to Trematode Parasites in a Freshwater Snail, Lymnaea Stagnalis

et al. 2004

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The amount and distribution of genetic variability in host populations can have significant effects on the outcome of host-parasite interactions. We studied the effect of mating system and genetic variability on susceptibility of Lymnaea stagnalis snails to trematode parasites. Mating system of snails from eight populations differing in the amount of genetic variability was manipulated, and self- and cross-fertilized offspring were exposed to naturally occurring trematode parasites in a controlled lake experiment. Susceptibility of snails varied between populations, but mating-system treatment did not have a significant effect. Heterozygosity of snails was negatively correlated with the probability of trematode infection, however, suggesting that parasitic diseases may pose a serious threat to populations lacking genetic variability.

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Section: Discussionsupporting

confidence: 64%

Section: Discussionmentioning

confidence: 77%

mentioning

confidence: 97%

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The Effects of Mating System and Genetic Variability on Susceptibility to Trematode Parasites in a Freshwater Snail, Lymnaea Stagnalis

et al. 2004

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“…Several studies found similar results (Strauss and Karban 1994;Stevens et al 1997;Ouborg et al 2000). These results contrast with other studies that have found a general increase of inbreeding depression upon infection (Wright 1977;Ajala 1992;Coltman et al 1999;Cassinello et al 2001;Carr and Eubanks 2002;Wiehn et al 2002). At present it is difficult to determine why some studies found a general increase in inbreeding depression upon infection and some did not.…”

Section: Discussionmentioning

confidence: 62%

Test of Synergistic Interaction Between Infection and Inbreeding in Daphnia Magna

2003

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It has been proposed that parasitic infections increase selection against inbred genotypes. We tested this hypothesis experimentally using pairs of selfed and outcrossed sibling lines of the freshwater crustacean Daphnia magna, which can be maintained clonally. We studied the performance of selfed relative to outcrossed sibling clones during repeated pairwise clonal competition in the presence and absence of two species of microsporidian parasites. In 13 of the 14 pairs, the selfed clones did worse than the outcrossed ones in the control treatment, but the presence of either parasite did not result in an overall increase in this difference. Rather, it decreased the performance of the selfed relative to the outcrossed sibling in some pairs and increased it in others. Moreover, the two parasite species did not have the same effect in a given pair. This indicates that, contrary to the hypothesis that parasites generally lead to a decreased performance of inbred genotypes, their effect may depend on the genetic background of the host as well as on the parasite species, and suggests that inbreeding can lead to reduced or increased resistance to parasites. Our findings also indicate that there is variation for specific resistance to different species of parasites in the meta-population from which the hosts for this study were obtained.

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“…Members of the genus are simultaneously hermaphroditic (Jarne and Delay 1990; Yu et al. 2016) and both outcrossing and self-fertilization occur (Jarne and Delay 1990; Jarne and Charlesworth 1993; Wiehn et al. 2002).…”

Section: Introductionmentioning

confidence: 99%

An Annotated Draft Genome for Radix auricularia (Gastropoda, Mollusca)

Schell

Feldmeyer

Schmidt

et al. 2017

Genome Biology and Evolution

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Molluscs are the second most species-rich phylum in the animal kingdom, yet only 11 genomes of this group have been published so far. Here, we present the draft genome sequence of the pulmonate freshwater snail Radix auricularia. Six whole genome shotgun libraries with different layouts were sequenced. The resulting assembly comprises 4,823 scaffolds with a cumulative length of 910 Mb and an overall read coverage of 72×. The assembly contains 94.6% of a metazoan core gene collection, indicating an almost complete coverage of the coding fraction. The discrepancy of ∼690 Mb compared with the estimated genome size of R. auricularia (1.6 Gb) results from a high repeat content of 70% mainly comprising DNA transposons. The annotation of 17,338 protein coding genes was supported by the use of publicly available transcriptome data. This draft will serve as starting point for further genomic and population genetic research in this scientifically important phylum.

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Family-Level Covariation Between Parasite Resistance and Mating System in a Hermaphroditic Freshwater Snail

Cited by 11 publications

References 36 publications

The Effects of Mating System and Genetic Variability on Susceptibility to Trematode Parasites in a Freshwater Snail, Lymnaea Stagnalis

The Effects of Mating System and Genetic Variability on Susceptibility to Trematode Parasites in a Freshwater Snail, Lymnaea Stagnalis

Test of Synergistic Interaction Between Infection and Inbreeding in Daphnia Magna

An Annotated Draft Genome for Radix auricularia (Gastropoda, Mollusca)

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