Self-Fertilization Versus Cross-Fertilization in the Hermaphroditic Freshwater Snail Bulinus globosus

Jarne, Philippe; Finot, Luc; Delay, Bernard; Thaler, L.

doi:10.2307/2409721

Cited by 47 publications

(41 citation statements)

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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: 95%

“…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%

“…The possible effects of inbreeding in outcrossing species have not been reported, except in Helix aspersa (Albuquerque de Matos & Serra, 1984). Furthermore, the fitness reduction of selfing compared with outcrossing may not be an adequate estimate of inbreeding depression because self-compatibility barriers, inbreeding avoidance behaviour and other factors could also greatly influence the reproductive success of selfers (Charlesworth & Charlesworth, 1987;Jarne et al, 1991). To obtain a better estimate of inbreeding depression, inbreeding other than that produced by selfing should be studied for self-compatible species.…”

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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: 95%

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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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“…Such effects may be delayed a generation or more, as recorded in the freshwater snail and in a bryozoan (Jarne et al 1991, Hunter & Hughes 1993. Although there seems to be no immediate inbreeding depression during the early life stages in Laonome albicmgillum, whether longterm effects exist deserves further study.…”

Section: Discussionmentioning

confidence: 98%

Self-fertilization:a potential fertilization mode in an estuarine sabellid polychaete

Hsieh¹

1997

Mar. Ecol. Prog. Ser.

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ABSTRACT. The simultaneously hermaphroditic sabellid Laonome albicingillum Hsieh is the most dominant polychaete species in a mangrove estuary in northern Taiwan. Isolated individuals produced fertil~zed eggs which developed into normal larvae. Seminal receptacles were not found, indicating that individuals cannot store sperm. Ova, which were obtained directly from the coelom and inseminated by the same individual, developed into viable larvae and then settled successfully. The viability of embryos and newly settled larvae did not differ between self-and outcross fertilizations, indicating that self-fertilization has no immediate deleterious effects. Hypoosmotic seawater (salinity below 10760) severely damaged sperm, resulting in stretched, perforated, or torn membranes. In contrast, seawater with 20 10 30% salinity did not injure sperm morphology. In estuarine environments, hyposaline ambient water presents such great constraints that selfing may be an advantageous fertilizat~on alternative for this simultaneously hermaphroditic species that is sessile and has broadcast spawning.

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“…low survival, growth, and fecundity) in some organisms (e.g. Jarne et al 1991), the primitive seed-production method for giant clams, probably causing self-fertilization, has been considered harmful (Ellis 1998).…”

Section: Introductionmentioning

confidence: 99%

Possibility of self-fertilization during hatchery culturing of giant clam, Tridacna crocea

Kurihara

Fuseya

Katoh

et al. 2010

Plankton Benthos Res

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Giant clams are simultaneous hermaphrodites and are assumed to ejaculate first and, after completely stopping ejaculation, release eggs. In the seed production method aimed at preventing self-fertilization, each adult clam is induced to ejaculate in a tank and then release eggs in another tank. Giant clams, however, have recently been suggested to continue ejaculation for a period after the beginning of egg release. The overlap between ejaculation and egg release might lead to self-fertilization in the tank used for egg release, especially for the eggs released just at the beginning of spawning. We examined the possibility of such self-fertilization for the giant clam Tridacna crocea and obtained three results. (1) In observations with the naked eye in a laboratory, 2 of 38 T. crocea simultaneously ejaculated and released eggs. (2) In a laboratory experiment, 1.5 to 80.0% of eggs released from each adult clam developed into D-shaped larvae without artificial cross-fertilization. Such development occurred more frequently for the eggs released earlier from each adult clam than for the eggs released later from the clam. (3) In observations at a hatchery, 2 to 94% of the eggs released from 4 of 5 adults were found to develop into D-shaped larvae without artificial cross-fertilization. The three results suggest that at least some T. crocea adults continue ejaculation for a period after starting spawning eggs, which causes self-fertilization.

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Self-Fertilization Versus Cross-Fertilization in the Hermaphroditic Freshwater Snail Bulinus globosus

Cited by 47 publications

References 0 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)

Self-fertilization:a potential fertilization mode in an estuarine sabellid polychaete

Possibility of self-fertilization during hatchery culturing of giant clam, Tridacna crocea

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