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Jarne P, Finot L, Delay B, et al. SELF-FERTILIZATION VERSUS CROSS-FERTILIZATION IN THE HERMAPHRODITIC FRESHWATER SNAIL BULINUS GLOBOSUS. Evolution. 1991;45(5):1136-1146doi: 10.1111/j.1558-5646.1991.tb04380.x.
Jarne, P., Finot, L., Delay, B., & Thaler, L. (1991). SELF-FERTILIZATION VERSUS CROSS-FERTILIZATION IN THE HERMAPHRODITIC FRESHWATER SNAIL BULINUS GLOBOSUS. Evolution; international journal of organic evolution, 45(5), 1136-1146. https://doi.org/10.1111/j.1558-5646.1991.tb04380.x
Jarne, Philippe, et al. "SELF-FERTILIZATION VERSUS CROSS-FERTILIZATION IN THE HERMAPHRODITIC FRESHWATER SNAIL BULINUS GLOBOSUS." Evolution; international journal of organic evolution vol. 45,5 (1991): 1136-1146. doi: https://doi.org/10.1111/j.1558-5646.1991.tb04380.x
Jarne P, Finot L, Delay B, Thaler L. SELF-FERTILIZATION VERSUS CROSS-FERTILIZATION IN THE HERMAPHRODITIC FRESHWATER SNAIL BULINUS GLOBOSUS. Evolution. 1991 Aug;45(5):1136-1146. doi: 10.1111/j.1558-5646.1991.tb04380.x. PMID: 28564176.
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Evolution. 1991 Aug;45(5):1136-1146. doi: 10.1111/j.1558-5646.1991.tb04380.x.

SELF-FERTILIZATION VERSUS CROSS-FERTILIZATION IN THE HERMAPHRODITIC FRESHWATER SNAIL BULINUS GLOBOSUS.

Evolution; international journal of organic evolution

Philippe Jarne, Luc Finot, Bernard Delay, Louis Thaler

Affiliations

  1. Universite Montpellier II, Institut des Sciences de l'Evolution, Laboratoire Génétique et Environnement, Place E. Bataillon, 34095, Montpellier Cedex 5, FRANCE.
  2. ORSTOM 2051, Avenue du Val de Montferrand, BP 5045, 34032, Montpellier Cedex 1, FRANCE.

PMID: 28564176 DOI: 10.1111/j.1558-5646.1991.tb04380.x

Abstract

Self-fertilization depression of fitness in the freshwater hermaphroditic snail Bulinus globosus, an intermediate host of the parasitic trematode Schistosoma, has been studied in a strain originating from Niger. B. globosus is an outcrosser that can self-fertilize when isolated before any copulation has occurred. The self-fertilization depression has been estimated during two successive generations. In the first generation, selfing was compared to outcrossing. Within each mating system group, selfing and outcrossing were compared again in the second generation. A striking difference was shown in favor of cross-fertilization for the number of eggs laid, the survival at birth of young snails and the number of snails reaching sexual maturity. The overall self-fertilization depression is 0.920 after two generations of selfing. We discuss the relative role of selfing and outcrossing in the evolution of freshwater snail populations.

© 1991 The Society for the Study of Evolution.

Keywords: Freshwater snail; freshwater snail; hermaphrodite; intermediate host; self-fertilization depression

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