Pre-copulatory behaviour of the freshwater hermaphrodite snail <i>Biomphalaria glabrata</i> (Say, 1818) (Gastropoda: Pulmonata)

Trigwell, J.; Dussart, G.; Vianey‐Liaud, Monique

doi:10.1093/mollus/63.1.116

Cited by 20 publications

(16 citation statements)

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“…The position (side of arena), time of initiation, duration and identity of snail initiating and/or terminating each interaction were individually recorded, producing a total of 13 600 lines of data. Mating duration was recorded as the duration that a snail's penis was visibly inserted into the other snail's genital pore (Vernon 1993;Vernon & Taylor 1996;Trigwell et al 1997). Nineteen triplets containing uninfected free-moving snails and 10 triplets containing patently infected free-moving snails were analysed (proc GLM in SAS/STAT v. 81999) using infection status, genotype and gender as the independent variables.…”

Section: Methodsmentioning

confidence: 99%

“…Although data are limited, some evidence of differential mating has been detected among unselected and uninfected B. glabrata lines, relating to inbreeding avoidance (Vernon et al 1995;Vernon & Taylor 1996) and geographical origin (Rupp & Woolhouse 1999). No gender biases, where individuals preferentially mate as male or female, were reported (Vernon et al 1995;Vernon & Taylor 1996;Trigwell et al 1997;Rupp & Woolhouse 1999). We investigated here whether an interplay of potential infection status (host resistance versus susceptibility genotypes) and current infection status (infected versus uninfected) influenced the reproductive strategy of B. glabrata snails.…”

Section: Introductionmentioning

confidence: 97%

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Parasite infection, host resistance and mate choice: battle of the genders in a simultaneous hermaphrodite

Webster

Hoffman

Berdoy

2003

Proc. R. Soc. Lond. B

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Parasites have been proposed to be fundamental in the evolution of mate choice because differential mating on the basis of heritable disease resistance is expected to lead to progeny with a better genomeenvironment match than random mating. However, direct empirical data in support of this hypothesis are often lacking, and the relative influences of current and potential infection status (i.e. resistance genotype), and of mate choice versus mate conflict, remain largely unknown. We demonstrate experimentally, using simultaneous hermaphroditic snails (Biomphalaria glabrata) artificially selected for resistance or susceptibility to Schistosoma mansoni infection, that mate choice is influenced by a combination of current and potential parasitic infection status. As predicted by game-theory models, we also found a picture of conflict and cooperation: resistant and susceptible genotypes copulated in either gender and reciprocated (i.e. switched gender) equally when faced with an uninfected partner, but, by contrast, resistant snails actively refused to copulate as females with an infected partner. Such recognition and discrimination has implications for the maintenance of sex and the evolution of recognition systems.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

Parasite infection, host resistance and mate choice: battle of the genders in a simultaneous hermaphrodite

Webster

Hoffman

Berdoy

2003

Proc. R. Soc. Lond. B

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“…Biomphalaria glabrata is a primarily outcrossing hermaphrodite (Mavarez et al 2002) that copulates frequently in the field and laboratory (Vernon and Taylor 1996;Rupp and Woolhouse 1999). Copulations are easy to observe and allow distinguishing unilateral male, unilateral female, and reciprocal copulations (Trigwell et al 1997). Mating is typically unilateral, and mating roles tend to be exchanged after successful mating, conforming to "relaxed reciprocal mating," as discussed above.…”

Section: Bateman Gradients In Hermaphrodites: a Worked Examplementioning

confidence: 99%

Bateman Gradients in Hermaphrodites: An Extended Approach to Quantify Sexual Selection

Anthes

David²,

Auld³

et al. 2010

The American Naturalist

152

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Sexual selection is often quantified using Bateman gradients, which represent sex-specific regression slopes of reproductive success on mating success and thus describe the expected fitness returns from mating more often. Although the analytical framework for Bateman gradients aimed at covering all sexual systems, empirical studies are biased toward separate-sex organisms, probably because important characteristics of other systems remain incompletely treated. Our synthesis complements the existing Bateman gradient approach with three essential reproductive features of simultaneous hermaphrodites. First, mating in one sex may affect fitness via the opposite sex, for example, through energetic trade-offs. We integrate cross-sex selection effects and show how they help characterizing sexually mutualistic versus antagonistic selection. Second, male and female mating successes may be correlated, complicating the interpretation of Bateman gradients. We show how to quantify the impact of this correlation on sexual selection and propose a principal component analysis on male and female mating success to facilitate interpretation. Third, self-fertilization is accounted for by adding selfed progeny as a separate category of reproductive success to analyses of Bateman gradients. Finally, using a worked example from the snail Biomphalaria glabrata, we illustrate how the extended analytical framework can enhance our understanding of sexual selection in hermaphroditic animals and plants.

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“…After Isolation, for 1 week, test snail was introduced into the beaker, and it was therefore more likely to be active and later take the male role (Trigwell et al 1997). We conducted 44 mating trials in a transparent glass beaker (1L) filled with fresh water to a depth of 7 mm.…”

Section: Laboratory Proceduresmentioning

confidence: 99%

“…07, p < 0.001). After Isolation, for 1 week, test snail was introduced into the beaker, and it was therefore more likely to be active and later take the male role (Trigwell et al 1997). We continuously recorded behaviour of the test snail by taking turns throughout the day.…”

Section: Laboratory Proceduresmentioning

confidence: 99%

Mate Choice and Mechanical Constraint on Size‐Assortative Paring Success in a Simultaneous Hermaphroditic Pond Snail Radix lagotis (Gastropoda: Pulmonata) on the Tibetan Plateau

Wang

2013

Ethology

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Body size is expected to affect the mating behaviour and mating patterns of simultaneous hermaphrodites, because it can influence fecundity, mate choice and mechanical constraints to mating. However, there is a lack of detailed research on size‐dependent mating patterns in hermaphroditic species, including aquatic pulmonates. We investigated mating patterns and mating success in the simultaneous hermaphroditic pond snail Radix lagotis (Gastropoda: Pulmonata). We found that fecundity increased with body size and we observed a strong pattern of size‐assortative mating across two breeding seasons. Sperm donors were more likely to inseminate large snails than small snails, and pairings between two large individuals were more likely to result in successful copulations than pairings of two small individuals or two individuals of differing sizes. Other possible explanations (mechanical constraint) for these patterns are also discussed.

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Pre-copulatory behaviour of the freshwater hermaphrodite snail Biomphalaria glabrata (Say, 1818) (Gastropoda: Pulmonata)

Cited by 20 publications

References 0 publications

Parasite infection, host resistance and mate choice: battle of the genders in a simultaneous hermaphrodite

Parasite infection, host resistance and mate choice: battle of the genders in a simultaneous hermaphrodite

Bateman Gradients in Hermaphrodites: An Extended Approach to Quantify Sexual Selection

Mate Choice and Mechanical Constraint on Size‐Assortative Paring Success in a Simultaneous Hermaphroditic Pond Snail Radix lagotis (Gastropoda: Pulmonata) on the Tibetan Plateau

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