Inbreeding depression and self-fertilization in Lymnaea peregra (Gastropoda: Pulmonata)

Jarne, Philippe; Delay, Bernard

doi:10.1038/hdy.1990.21

Cited by 58 publications

(40 citation statements)

References 18 publications

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“…Reduced reproductive success caused by selfing, relative to outcrossed individuals, has been reported in some fresh water and land snails, such as Bulinus globosus (Jarne et at., 1991), Lymnaea peregra (Jarne & Delay, 1990), Triodopsis albolaris (McCracken & Brussard, 1980), as well as A. arbustorum (Chen, 1993b). The present data provided an opportunity for analysing the cause of fitness reduction in selfed individuals of A. arbustorum.…”

Section: Discussionmentioning

confidence: 99%

“…Research on the inbreeding depression of hermaphroditic snails has been carried out in species that can reproduce by self-fertilization. The reproductive success of selfed and outcrossed individuals has been compared in the freshwater snails Bulinus globosus (Jarne et al, 1991), Lymnaea columella and L. stagnalis (Cain, 1956), L. peregra (Jarne & Delay, 1990) and in land snails Punctum pygmaeum (Baur, 1989), Rumina decollata (Selander et al, 1974) and Triodopsis albolabris (McCracken & Brussard, 1980). The possible effects of inbreeding in outcrossing species have not been reported, except in Helix aspersa (Albuquerque de Matos & Serra, 1984).…”

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confidence: 99%

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Comparison of inbreeding and outbreeding in hermaphroditic Arianta arbustorum (L.) (land snail)

Chen

1993

Heredity

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Inbreeding depression was studied in the outcrossing hermaphroditic land snail Arianta arbustorum, by comparing the reproductive performance of full-sib pairs (inbreeding) and pairs of unrelated individuals (outbreeding). Fecundity (number of eggs laid) was not found to differ significantly between inbreeding and outbreeding pairs under laboratory conditions, but fertility (the proportion of eggs that hatched) and the number of hatchlings produced by inbreeding pairs were significantly lower than those of outbreeding pairs. Estimates of reduction in the fertility of eggs (0.37) and in the number of hatchlings produced (0.56) suggested significant inbreeding depression in full-sib crosses. Inbred offspring reared in the garden had a higher mortality than outbred offspring reared in the same environment, with an inbreeding depression of 0.30 in the first year after hatching; but no significant difference was found when offspring from both groups were kept in the laboratory. The results support the hypothesis that cross-fertilization in simultaneous hermaphrodites is maintained by strong inbreeding depression.

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Section: Discussionmentioning

confidence: 99%

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confidence: 99%

Comparison of inbreeding and outbreeding in hermaphroditic Arianta arbustorum (L.) (land snail)

Chen

1993

Heredity

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“…We may, however, also expect selection against selffertilisation, because self-fertilisation can lead to reduced ®tness compared to cross-fertilisation in both animals and plants (e.g. Charlesworth and Charlesworth, 1987;Jarne and Delay, 1990;Schmitt and Ehrhardt, 1990).…”

Section: Introductionmentioning

confidence: 99%

Lifetime reproductive output in a hermaphrodite cestode when reproducing alone or in pairs: a time cost of pairing

Schärer

Wedekind

1999

Evolutionary Ecology

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Abstract. The cestode Schistocephalus solidus is a facultatively self-fertilising simultaneous hermaphrodite. Here we test for di erences in the starting point, the rate, and the magnitude of egg production between individuals allowed to reproduce alone (only self-fertilisation possible) or in pairs (both self-and cross-fertilisation possible). Speci®cally, we want to distinguish between alternative processes responsible for the lower egg production in paired individuals observed in an earlier study (Wedekind et al., 1998). We designed an improved in vitro system, replacing the bird ®nal host that allows us to measure, with high temporal resolution, the timing and magnitude of lifetime egg production of worms in these two social situations. We found that the experimental groups did not di er signi®cantly in the starting point of egg production. However, the temporal pattern in egg production di ered between them, in that paired individuals had a lower rate of egg production. This, however, did not lead to a signi®cant reduction in lifetime egg production, as pairs compensated for the lower rate by producing eggs longer than single individuals. We argue that the lower rate of egg production may nevertheless lead to a time cost of pairing in the study species, and that this cost is likely to represent a cost of outcrossing due to sexual selection.

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“…Snails of the genus Radix (former Lymnaea) are mixed mating, simultaneously hermaphroditic freshwater animals (Jarne and Delay, 1990a, b;Coutellec-Vreto et al, 1998;Wiehn et al, 2002). The systematics of this group was recently revised using ribosomal DNA sequences (ITS-1 gene) by Bargues et al (2001).…”

Section: Study Systemmentioning

confidence: 99%

Among- and within-population variation in outcrossing rate of a mixed-mating freshwater snail

2006

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Mixed-mating animals self-fertilize a proportion of their offspring. Outcrossing rate may covary with the ecological and historical factors affecting the population. Theory predicts that outcrossing is favored when inbreeding depression is high and when individual heterozygosity is important. Self-fertilization is predicted to be favored when costs of male function, or mate finding are high, for example, when empty patches are colonized by few individuals. In this study, we assessed primary (after hatching) and secondary (after juvenile mortality) outcrossing rates of two mixed-mating snail populations. Our purpose was to assess the variation in mating-system parameters and estimate significance of inbreeding depression for secondary outcrossing rate (the realized outcrossing rate of parents that produce the next generation). Secondary outcrossing rate was higher than the primary outcrossing rate in one of the two populations, suggesting considerable inbreeding depression. In the other study population, secondary outcrossing rates were found to increase when initially low, or decrease when initially high, depending on the family. Moderate outcrossing rates were found to be more stable. Parental inbreeding coefficients were close to zero in both populations. Outcrossing rate was much more variable among families in the population with the lower average outcrossing rate, suggesting that individuals differed considerably in their mating system. Our results add to recent studies suggesting that populations of mixedmating animals may differ in their mating system parameters and expression of inbreeding depression.

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Inbreeding depression and self-fertilization in Lymnaea peregra (Gastropoda: Pulmonata)

Cited by 58 publications

References 18 publications

Comparison of inbreeding and outbreeding in hermaphroditic Arianta arbustorum (L.) (land snail)

Comparison of inbreeding and outbreeding in hermaphroditic Arianta arbustorum (L.) (land snail)

Lifetime reproductive output in a hermaphrodite cestode when reproducing alone or in pairs: a time cost of pairing

Among- and within-population variation in outcrossing rate of a mixed-mating freshwater snail

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