| P149 |
Janicke, T., Arnqvist, G., Crochet, P.-A., David,P., Jarne, P., Lehtonen, J., Lenormand, T., Morrow, E.H., Parker, G.A, Saunders, P., Tonnabel, J., Veyrunes, F., Haag, C.R. 2026 Biological sex is binary and rooted in anisogamy. Ecology Letters 29(7) : e70426 |
| P148 |
Tonnabel, J., David, P., Janicke, T. 2026 Sexual selection in plants and animals: towards a unified framework. Trends in Ecology and Evolution41(6) : 514-526 |
| P147 |
Bonel, N., Grunau, C., David , P. 2026 Not just mutations : inbreeding depression persists without genetic variation Evolution Letters, qrag008 (hal-04977368v1 )
https://doi.org/10.1093/evlett/qrag008 |
| P146 |
Skarlou, E.*, Laugier, F*, Béthune, K., Chenin, T., Donnay, J.-M., Froissard, C., David, P. (2025) Complex genetic determination of male-fertility restoration in the gynodioecious snail Physa acuta. Journal of Evolutionary Biology, 38(11) : 1423-1434 (*co-first authors) hal-05413973v1 |
| P145 |
Laugier, F., Béthune, K., Plumel, F., Froissard, C., Donnay, J. M., Chenin, T., Rousset, F. & David, P. (2025). Cytoplasmic Male Sterility declines in the presence of resistant nuclear backgrounds. American Naturalist, 206(1): 16-30 hal-05370429v1 |
| P144 |
Bererd, S., David, P., Teulier, L., Plénet, S., & Luquet, E. (2025). Temperature-dependent benefits and costs of cytoplasmic male sterility in snail Physa acuta. Proceedings B, 292(2038), 20241762. hal-04901658v1 |
| P143 |
Laugier, F., Saclier, N., Béthune, K., Braun, A., Konecny, L., Lefébure, T., Luquet, E., Plénet, S., Romiguier, J., David, P. 2024 Both nuclear and cytoplasmic polymorphisms are involved in genetic conflicts over male fertility in the gynodioecious snail, Physa acuta. Evolution, 78(7) : 1227-1236 https://doi.org/10.1093/evolut/qpae053 hal-04707802v1 |
| P142 |
Baudry, T., Millet, L., Jarne, P., David, P., Grandjean, F. 2024 Multiple invasions and predation : the impact of the crayfish Cherax quadricarinatuson invasive and native snails. Ecology and Evolution 14 :e11191 https://doi.org/10.1002/ece3.11191 hal-05370429v1 |
| P141 |
Chapuis, E., Jarne, P., David, P. 2024 Rapid life-history evolution reinforces competitive asymmetry between invasive and resident species. Peer Community Journal, 4 : e25. https://doi.org/10.24072/pcjournal.394 hal-04550058v1 |
| P140 |
Bonel, N., Nakadera, Y., Piza, J., Vazquez, A. A., Koene, J. M., David, P., Jarne, P., Alda, P. 2023. Chapter 10 : Reproductive strategies, genetic diversity and invasive ability in Lymnaeidae. Pp. 265-284 in Vinarski, M. V. & Vazquez, A. A. (eds). The Lymnaeidae, Zoological Monographs 7, Springer Nature Switzerland https://doi.org/10.1007/978-3-031-30292-3_10 hal-04976552v1 |
| P139 |
De Solan, T., Sinervo, B., Geniez, P., David, P., Crochet, P.-A. 2023 Colour polymorphism and conspicuousness do not increase speciation rates in Lacertids. Peer Community Journal 3 : e111. https://doi.org/10.24072/pcjournal.345 hal-04310381v1 |
| P138 |
Calcagno, V., David, P., Jarne, P., Massol, F. 2023 Coevolution of species colonisation rates controls food-chain length in spatially structured food webs. Ecology Letters26 : S140-S151. doi: 10.1111/ele.14263 hal-04310381v1 |
| P137 |
David, P.,Degletagne, C., Saclier, N., Jennan, A., Jarne, P., Plénet, S., Konecny, L., François, C., Guéguen, L., Garcia, N., Lefébure, T.*, Luquet, E.* 2022 Extreme mitochondrial DNA divergence undelies genetic conflict over sex determination. Current Biology, 32(10), 2325-2333.e6 doi : 10.1016/j.cub.2022.04.014
[It is intellectually frustrating when some theory seems to apply only to one group for no particular reason. This was the case of cytonuclear conflict theory: nuclear genes are inherited from both parents, while cytoplasmic genes (such as mitochondrial genes) are usually propagated only through eggs. The two types of genes are therefore exposed to conflicts over how much energy a hermaphrodite should spend producing female versus male gametes. We have lots of examples in plants, where mitochondria capable of suppressing pollen production evolve, triggering counter-adaptation of nuclear genes restoring pollen production. But surprisingly not a single convincing example in animals. Well, until we discovered the first one in my favourite snail, Physa acuta. The story started with an amazingly divergent mtDNA, so much so that it took us lots of double-checks to ascertain it was in the same species as the standard P. acuta mtDNA. Indeed it was, but the snails carrying it turned out to be incapable of inseminating standard P acuta, though they happily received their sperm. They had lost the male function, with practically zero sperm production and no male behavior. Among snails, P. acuta is now definitely my hero: It is the first example of cytoplasmic male sterility in animals, and it has the highest degree of molecular divergence ever observed between two mitogenomes within a eukaryotic species. This coincidence suggests that accelerated evolution has played a role in a potential evolutionary arms-race between mitochondrial and nuclear genes.]
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| P135 |
Tonnabel, J., David, P., Pannell, J.R. 2022 Rapid divergence in vegetative morphology of a wind-pollinated plant between populations at contrasting densities. Evolution, 76(8) : 1737-1748 doi:10.1111/evo.14539 |
| P134 |
Pantel, J. H., Lamy, T., Dubart, M., Pointier, J.-P., Jarne,P., David, P. 2022. Metapopulation dynamics of multiple species in a heterogeneous landscape. Ecological Monographs, 92 :e1515 doi :10.1002/ecm.1515. |
| P133 |
Jourdan-Pineau, H., Crochet, ¨P.-A.*, David, P.* 2022 Bimodal breeding phenology in the Parsley Frog Pelodytes punctatus as a bet-hedging strategy in an unpredictable environment despite strong priority effects. Peer Community Journal, 2:e57 (* equal contributions) |
| P132 |
Janicke, T., Chapuis, E., Meconcelli, S., Bonel, N., Delahaie, B., David, P. 2022 Environmental effects on the genetic architecture of fitness components in a simultaneous hermaphrodite. Journal of Animal Ecology, 91 :124-137 |
| P131 |
Dubart, M., Pointier, J.-P., Jarne, P., David, P. 2022 Niche filtering, competition and species turnover in a metacommunity of freshwater molluscs Oikos : e09157. doi: 10.1111/oik.09157 |
| P130 |
De Solan, T., Théry, M., Picard, D., Crochet, David, P., P.-A., Secondi, J. 2022 A lot of convergence, a bit of divergence: environment and interspecific interactions shape body color patterns in Lissotriton newts. Journal of Evoluionary Biology, 35 :575-588. DOI: 10.1111/jeb.13985 |
| P129 |
Tonnabel, J., David, P., Janicke, T., Lehner, A., Mollet, J.-C., Pannell, J.R., Dufay, M. 2021 The scope for postmating sexual selection in plants. Trends in Ecology and Evolution36 (6) : 556-567 (hal-03190294v1) |
| P128 |
Luviano, N., Lopez, M., Gawehns, F., Chaparro, C. ; Arimondo, P. B.; Ivanovic, S., David, P., Verhoeven, K., Cosseau, C., Grunau, C. 2021 The methylome of Biomphalaria glabrata and other mollusks: enduring modification of epigenetic landscape and phenotypic traits by a new DNA methylation inhibitor. Epigenetics and Chromatin 14 :48. doi : 10.1186/s13072-021-00422-7 |
| P127 |
Jarne, P., Lozano del Campo, A., Lamy, T., Chapuis, E., Dubart, M., Segard, A., Canard, E., Pointier, J.-P., David, P. 2021 Connectivity and selfing drive population genetic structure in a patchy landscape: a comparative approach of four co-occurring freshwater snail species. Peer Community Journal, 1, e21. doi : 10.24072/pcjournal.29 |
| P126 |
Alda, P., Lounnas, M., Vázquez, A. A., Ayaqui, R., Manuel Calvopina, M., Celi-Erazo, M., Dillon, R., González Ramírez, L. C., Loker, E. S., Muzzio-Aroca, J., Nárvaez, A., Noya, O., Pereira, A. E., Martini Robles L., Rodríguez-Hidalgo, R., Uribe, N., David, P., Jarne, P., Pointier, J.-P., Hurtrez-Boussès, S.. 2021. Systematics and geographical distribution of Galba species, a group of cryptic and worldwide freshwater snails. Molecular Phylogenetics and Evolution157 :107035.[BioRxiv, 647867, v3 peer-reviewed and recommended by PCI Evolutionary Biology] doi: 10.1101/647867. (hal-03174525v1) |
| P125 |
Makiola, A., Compson Z. G., Baird, D. J., Barnes, M. A., Boerlijst, S. P., Bouchez, A., Brennan, G., Bush, A., Canard, E., Cordie, T., Creer, S., Curry, S. A., David, P., Dumbrell, A. J., Gravel, D., Hajibabaei, M., Hayden, B. van der Hoorn, B., Jarne, P., Jones, J. I., Karimi, B., Keck, F., Kelly, M., Knot, I. E., Krol, L., Massol, F., Monk, W. A., Murphy, J., Pawlowski, J., Poisot, T., Porter, T., Randall, K. C., Ransome, E., Ravigné, V., Raybould, A., Robin, S., Schrama, M., Schatz, B., Tamaddoni-Nezhad, A., Trimbos, K. B., Vacher, C., Vasselon, V., Wood, S., Woodward, G., Bohan D. A. 2020 Key questions for next-generation biomonitoring. Frontiers in Environmental Science7 : 197 (hal-02402296v1) |
| P124 |
Fallet, M., Luquet, E., David, P., Cosseau, C. 2020 Epigenetic inheritance and intergenerational effects in mollusks. Gene 729 : 144166 (hal-02345327v1), |
| P123 |
de Solan, T., Renoult, J. P., Geniez, P., David, P.*, & Crochet, P. A.* (2020). Looking for mimicry in a snake assemblage using deep learning. American Naturalist,196 : 74-86 bioRxiv, 789206. (*equal contributions) (hal-02378461v1) |
| P122 |
De Carvalho Augusto, R., Rey, O., Cosseau, C., Chaparro, C., Vidal-Dupiol, J., Allienne, J.-F., Duval, D., Pinaud, S., Tönges, S., Andriantsoa, R., Luquet, E., Aubret, F., Dia Sow, M., David, P., Thomson, V., Joly, D., Gomes Lima, M., Federico, D., Danchin, E., Minoda, A., Grunau, C. 2020 A simple ATAC-seq protocol for population epigenetics. Wellcome Open Research5 :121 (hal-03145575v1) |
| P121 |
Aubree, F., David, P., Jarne, P., Loreau, M., Mouquet, N., Calcagno, V., 2020. How community function affects biodiversity-ecosystem functioning relationships. Ecology Letters23 : 1263-1275. (hal-02992040, version 1) |
| P120 |
Tonnabel, J., David, P., Pannell, J. R. 2019 Do metrics of sexual selection conform to Bateman’s principles in a wind-pollinated plant ? Proc. Roy. Soc. London B, 286: 20190532 (hal-02411612) |
| P119 |
Tonnabel, J., David, P., Klein, E. K., Pannell, J. R., 2019. Sex-specific selection on plant architecture through 'budget' and 'direct' effects in experimental populations of a wind-pollinated herb. Evolution 73(5), 897-912 (hal-02411610)
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| P118 |
Noël, E.*, Fruitet, E.*, Lelaurin, D., Bonel, N., Segard, A., Sarda, V., Jarne, P., & David P. (2019). Sexual selection and inbreeding: two efficient ways to limit the accumulation of deleterious mutations. Evolution Letters3-1 :80-92 recommended and peer-reviewed by PCI Evol Biolas bioRxiv, 273367 (*equal contributions) (hal-02366845v1) |
| P117 |
Jabot, F., Laroche, F., Massol, F., Arthaud, F., Crabot, J., Dubart, M., Blanchet, S., Munoz, F., David, P., Datry, T. 2019 Assessing metacommunity processes through signatures in spatiotemporal turnover of community composition. Ecology Letters23 (9) : 1330-1339. peer-reviewed and recommended by PCI Ecologyas bioRxiv480335 ver.3 (hal-02942285v1) |
| P116 |
Dubart, M., Pantel, J. H., Pointier, J.-P., Jarne, P., David, P. 2019 Modelling competition, niche and coexistence between an invasive and a native species in a two-species metapopulation Ecology 100(6) e02700. doi:10.1002/ecy.2700(hal-02148415v1) |
| P115 |
Lounnas, M., Correa, A.C., Alda, P., David, P., Dubois, M.P., Calvopiña, M., Caron, Y., Celi-Erazo, M., Dung, B.T., Jarne, P. and Loker, E.S., 2018. Population structure and genetic diversity in the invasive freshwater snail Galba schirazensis (Lymnaeidae). Canadian Journal of Zoology, 96(5) : 425-435. (hal-01953197v1) |
| P114 |
Bonel, N.*, Noël, E.*, Janicke, T., Sartori, K., Chapuis, E., Ségard, A., Meconcelli, S., Pélissié, B., Sarda, V. and David, P., 2018. Asymmetric evolutionary responses to sex‐specific selection in a hermaphrodite. Evolution 72(10), 2181-2201. (* equal contributions) (hal-02411607) |
| P113 |
Alda, P., Lounnas, M., Vázquez, A.A., Ayaqui, R., Calvopiña, M., Celi-Erazo, M., Dillon, R.T., Jarne, P., Loker, E.S., Muñiz-Pareja, F.C., Muzzio-Aroca, J., Narvaez, A.O., Noya, O., Robles, L. M., Rodriguez-Hidalgo, R., Uribe, N., David, P., Pointier, J.-P., Hurtrez-Boussès, S. 2018. A new multiplex PCR assay to distinguish among three cryptic Galba species, intermediate hosts of Fasciola hepatica. Veterinary Parasitology, 251 : 101-105 (hal-02016541v1) |
| P112 |
Tonnabel, J. David, P. & Pannell, JR. (2017). Sex-specific strategies of resource allocation in response to competition for light in a dioecious plant. Oecologia 185:675-686. |
| P111 |
Pantel, J. H., Bohan, D. A., Calcagno, V., David, P., Duyck, P.-F., Kamenova, S., Loeuille, N., Mollot, G., Romanuk, T. N., Thébault, E., Tixier, P., Massol, F. 2017. 14 questions for invasion in ecological networks. In : Bohan, D. A., Dumbrell, A. J., Massol, F., editors, Advances in Ecological Research,56 : 293-340. Academic Press, Oxford, U.K (hal-01453469v1) |
| P110 |
Noël, E., Jarne, P., Glémin, S., MacKenzie, A., Ségard , A., Sarda, V., David, P. 2017. Experimental evidence for the negative effects of self-fertilization on the adaptive potential of populations. Current Biology, 27 : 237-242
[Some ideas in biology have been repeated over and over with surprisingly little evidence. This is the case of the opinion that selfing species are evolutionary dead-ends as they cannot respond to new selection pressures. We test this idea directly by comparing the reponse to artificial selection for a morphological trait in snail populations under either outcrossing and selfing, and with or without previous experience of self-fertilization. Selfing initially speeds up the response to selection, but then slows it down after a few generations while outcrossing lines continue to respond. This effect, consistent with the dead-end hypothesis, not only reflects an exhaustion of genetic variation but also an increase in nonheritable phenotypic variance under selfing. ]
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| P109 |
Lounnas, M., Vázquez, A. A., Alda, P., Sartori, K., Pointier, J. P., David, P., Hurtrez-Boussès, S. 2017. Isolation, characterization and population-genetic analysis of microsatellite loci in the freshwater snail Galba cubensis (Lymnaeidae). Journal of MolluscanStudies 83 (1): 63-68 (hal-01418196v1) |
| P108 |
Lounnas, M., Correa, A. C., Vázquez, A. A., Dia, A., Escobar, J. S., Nicot, A., Arenas, J., Ayaqui, R., Dubois, M. P., Gimenez, T., Gutiérrez, A., González-Ramírez, C., Noya, O., Prepelitchi, L., Uribe, N., Wisnivesky-Colli, C., Yong, M., David, P., Loker, E. S., Jarne, P., Pointier, J. P., Hurtrez-Boussès, S. (2017), Self-fertilization, long-distance flash invasion and biogeography shape the population structure of Pseudosuccinea columella at the worldwide scale. Molecular Ecology, 26: 887–903
[I participated in this large and collaborative microsatellite study set up by Sylvie Hurtrez-bousses and her PhD student Manon Lounnas, showing how a self-fertilizing freshwater snail can lose most of their genetic variation during invasion. Presumably originating forom North America, where its diversity is maximal, this species has colonized many places in Africa, Europe, Indian Ocean, caribbean and Pacific islands, and in all these places a single homozygous genotype is found - in sharp contrast with the situation of invasive outcrossing snails such as Physa acuta -P88]
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| P107 |
Lamy, T., Laroche, F., David, P., Massol, F., Jarne, P. 2017 The contribution of species-genetic diversity correlations to the understanding of community assembly rules Oikos126(6) : 759–771.
[We review the literature on correlations between species diversity and genetic diversity (SGDC) and show how they can be used to unravel community properties. We highlight the importance of spatial and temporal variation in carrying capacity and connectivity among habitat patches, and of the similarity of reponse to environmental variation and of modes of dispersal among the studied taxa, to determine the sign and intensity of SGDC. We propose statistical methods to incorporate environmental information in the analysis of SGDC in order to disentangle the processes at play ]
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| P106 |
David, P., Thébault, E., Anneville, O., Duyck, P.-F., Chapuis, E., Loeuille, N. 2017 Impacts of invasive species on food webs : a review of empirical data. In : Bohan, D. A., Dumbrell, A. J., Massol, F., editors, Advances in Ecological Research, 56 : 1-60. Academic Press, Oxford, U.K.
[Invasive species affect food webs by becoming new predators (top-down effect) or new prey (bottom-up) to resident species, but also by sharing prey, thus competing with them, or sharing predators, thus exerting indirect competition. We review lots of empirical examples of these effects and come up with the idea that, regardless of the type of interaction, extreme impacts arise because of lack of coevolution combined with an invasion filter : non-coevolved species, exotic vs resident, tend to have more extreme interactions on average, in favor of either one or the other, but only when they are favorable to exotics do the latter successfully invade. Consequently, eco-evolutionary immaturity of resident food webs, due to historical isolation, recent eutrophication, lack of top-predators or of important feeding types, or anything that has kept diversity relatively low, make them prone to experience large (and irreversible) impacts of potential invaders. We discuss the potential lessons for remediation / conervation policies]
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| P105 |
Chapuis, E., Lamy, T., Pointier, J.-P., Juillet, N., Ségard, A., Jarne, P., David, P. (2017) Bioinvasion triggers rapid evolution of life histories in freshwater snails. American Naturalist 190:5, 694-706
[It is now commonplace to describe bioinvasions as laboratories for rapid evolution; yet few examples are well documented. In the Guadeloupe pond network that we have been following since 2000, we were able to observe year after year the progression of the invasion by Physa acuta. With a large common-garden experiment comparing natural populations exposed to this invasion for different times, we show that Physa acuta triggers a rapid evolution of life-history traits in its related competitor Aplexa marmorata, towards earlier and more intense production of offspring, at the expense of lower egg/juvenile size and adult survival. A unique example of rapid evolution driven by the arrival of a new competitor]
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| P104 |
Calcagno, V., Jarne, P., Loreau, M., Mouquet, N., & David, P. 2017. Diversity spurs diversification in ecological communities. Nature Communications 8 : 15810
[Evolution can contribute to the diversification of regional communities through a process of adaptive radiation. This process is often said to be triggered by the availability of niche space, and to gradually slow down as diversity builds up and niches become occupied. In this theoretical study, we question this view and show that, under three classical models of species coexistence, diversification is easier when some diversity is already present than when there is only one species. This may explain the slow start observed in adaptive radiations in some insular taxa (caribbean lizards) and experimental evolution settings ]
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| P103 |
Viard, F., David, P., Darling, J. 2016. Marine invasions enter the genomic era : three lessons from the past, and the way forward. Current Zoology, 62(6) : 629-642
[Invasion genetics comes of age, but is now renewed thanks to NGS technology. We review what these new markers have recently brought to our knowledge of marine invasions. The large numbers of loci allow to study genetic structure with high sensitivity, revealing unsuspected dicontinuities and cryptic species complexes in marine populations; and making it possible to capture the faint genetic signals of the usually very moderate founder effects in recent invaders. However their value to understand adaptive processes during invasion will depend on our ability to maintain efforts on exhaustive geographic sampling and common-garden experiments ]
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| P102 |
Stoffel, M. A., Esser, M., Kardos, M., Humble, E., Nichols, H., David, P., Hoffmann, J. I. 2016 inbreedR : an R package for the analysis of inbreeding based on genetic markers. Methods in Ecology and Evolution 7(11), 1331-1339
[The computation of two-locus heterozygosity disequilibrium (or g2), initially described in David et al. 2007 and performed by the software RMES, is usually too long for NGS-based data. The low-computation-time approximation I initially derived for Hoffmann et al. 2014 is here made available as an R-package together with some resampling and graphic methods -thanks to the programming effort of M. Stoffel and colleagues ]
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| P101 |
Noël, E., Chemtob, Y., Janicke, T., Sarda, V., Pélissié, B., Jarne, P., David, P. 2016. Reduced mate availability leads to evolution of self-fertilization and purging of inbreeding depression in a hermaphrodite. Evolution, 70: 625–640
[Weexplore evolutionary scenarios of transitions from outcrossing to selfing using experimental evolution in the hermaphroditic snail Physa acuta, a preferential outcrosser. We created lines that were frequently forced to reproduce by selfing. In ca. 20 generations this regime purged an important fraction of the inbreeding depression and snails became less reluctant to self-fertilize (reduced waiting time). Thus, facultative selfing not only provides reproductive assurance, it may also create conditions that favour more selfing, potentially initiating an evolutionary transition ]
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| P100 |
Ehlers, B. K., David, P., Damgaard, C. F. and Lenormand, T. 2016. Competitor relatedness, indirect soil effects, and plant co-existence. Journal of Ecology 104 :1126-1135
[An experiment showing that the effects of competition between an within species of two annuals (Medicago) are modified by a perennial shrub, the thyme, through chemicals released in the soil. Competition favours one or the other species depending on whether the soil has been exposed to thyme or not. In addition we observed a tendency for intraspecific competition to have less negative effects when it occurs between closely related individuals rather than unrelated ones, a characteristic that may promote local dominance of a few genotypes of each species ]
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| P99 |
Mousset, M., David, P., Petit, C., Pouzadoux, J., Hatt, C., Flaven, E., Ronce, O., Mignot,A. 2016Lower selfing rates in metallicolous populations of the pseudometallophyte Noccaea caerulescens in southern France than in nonmetallicolous populations. Annals of Botany,117 : 507-519
[We develop a new method to test whether two groups of populations differ in their average selfing rate and use it to show that populations of an annual plant tolerant to heavy metals have lower selfing rates in soil polluted by heavy metals near ancient mines than in the surrounding nonpolluted landscape. ]
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| P98 |
Marie-Orleach, L., Janicke, T., Vizoso, D. B., David, P., Schärer, L. 2016, Quantifying episodes of sexual selection: Insights from a transparent worm with fluorescent sperm. Evolution, 70: 314–328.
[Macrostomum is a fantastic hermaphroditic worm, it is transparent and can be made fluorescent through GFP technology. Lucas Marie-Orleach and the team of Lukas Schärer in Basel were thus able to track the fate of individual sperm after copulation, to get a really precise decomposition of various phases of sexual selection, before and after copulation. I helped with the analyses, similar to Pélissié et al 2014; Macrostomum turns out to be another hermaphrodite where lots of the variance in male reproductive success depends on variability in the fate of sperm after copulation]
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| P97 |
Laroche, F., Jarne, P., Lamy, T., David, P., Massol, F. 2015. A neutral theory for interpreting correlations between species and genetic diversity in communities. The American Naturalist185: 59-69
[SGDC (species-genetic diversity correlations, correlations between molecular diversity within a species and species diversity in the surrounding community) have been described in many organisms but their interpretation is usually vague. A neutral reference is lacking, to predict what would happen when competition occurs among individuals in a fragmented habitat, but without any biological difference due to species or genotype. We model this situation and show how the joint distribution of site connectivity and site carrying capacity, and the mutation rate, determine the sign and intensity of SGDC.]
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| P96 |
Janicke, T., David, P., Chapuis, E.,2015 Environment-Dependent Sexual Selection: Bateman’s Parameters under Varying Levels of Food Availability. The American Naturalist 185 : 756-768
[Sexual selection depends on the environment, and the availability of resources determines how reproductive and mating success can vary in a population. We show that food restriction decreases the opportunity for sexual selection and makes reproductive success less dependent on mating success in the hermaphroditic snail Physa acuta - thus decreasing the asymmetry between male and female functions with respect to sexual selection. Food restriction seems to dampen phenotypic variation rather than to enhance it, unlike other forms of stress]
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| P95 |
Graham, S., Chapuis, E., Meconcelli, S., Bonel, N., Sartori, K., Christophe, A., Alda, P., David, P., Janicke, T., 2015 Size-assortative mating in simultaneous hermaphrodites: an experimental test and a metaanalysis. Behavioral Ecology and Sociobiology69(11), 1867-1878.
[Size-assortative mating occurs when individuals prefer to mate with similar-sized partners- but similarity within mating pairs can result from various reasons that have nothing to do with sexual preference (eg spatial autocorrelation in body size or age). We illustrated this in Physa acuta by finding no preference for similar-sized mates in controlled settings while there was a correlation in size within mating pairs collected in the field. In addition we did a metanalysis showing that evidence for size-assortative mating tends to exist only in reciprocally-copulating hermaphrodites in which mates play symmetrical roles, and therefore may both be choosy]
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| P94 |
Burgarella, C., Gayral, P., Ballenghien, M., Bernard, A., David, P., Jarne, P., Correa, A., Hurtrez-Boussès, S., Escobar, J., Galtier, N., Glémin, S. 2015 Molecular evolution of freshwater snails with contrasting mating systems. Molecular Biology and Evolution32(9) : 2403-2416.
[Self-fertilization is thought to impair the response to selection on the long term by decreasing effective recombination. Here we studied molecular polymorphism and divergence in transcriptomes of selfing and outcrossing lineages of hermaphroditic snails. We showed that selfing snails have accumulated more nonsynonymous changes than outcrossing ones, suggesting that they have a hard time getting rid of slightly deleterious mutations,. Compared to plant studies, our snail study has the advantage that selfing is relatively ancient in the studied clade, leaving more time to accumulate changes]
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| P93 |
Weeks, S.C., Benvenuto, C., Reed, S.K., Duff, R.J., Duan, Z.-H., David, P. 2014 A field test of a model for the stability of androdioecy in the freshwater shrimp, Eulimnadia texana. Journal of Evolutionary Biology, 27: 2080-2095
[Steve Weeks has been studying for a long time these wonderful little creatures that have evolved from dioecy to androdioecy (coexistence of males and hermaphrodites) and maintained this system for millions of years. This is a field study to test models of maintenance of androdioecy, in which the selfing rate is a crucial parameter. In order to infer selfing rates from allozyme data, I designed a modified version of the RMES program to take into account the specificity of this system, as well as the presence of a mix of sex-linked and non sex-linked loci ]
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| P92 |
Pélissié, B., Jarne, P., Sarda, V., David, P 2014 Disentangling precopulatory and postcopulatory sexual selection in polyandrous species Evolution 68(5) : 1320-1331
[Sexual selection is a complicated matter : male reproductive success depends on how many copulations and mates they get, and when they inseminate them compared to other male competitors (precopulatory processes) and how efficient each copulation is at getting many eggs fertilized in spite of sperm competition (postcopulatory processes). Understanding at which stage variance in male fitness is generated requires detailed observation of sexual activity, together with paternity analysis in offspring. Here we develop experimental and statistical methodology to perform this task and apply it to our favorite organism, the snail Physa acuta - showing that, although the number and timing of copulations increases male fitness, approximately 40% of the variance is generated at the postcopulatory stage ]
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| P91 |
Lohr, J. N., David, P., Haag, C. R. 2014 Reduced lifespan and increased ageing driven by genetic drift in small populations. Evolution 68: 2494-2508
[Under the mutation accumulation theory, genetic variance in senescence in natural populations reflects the disproportionate accumulation of deleterious mutations affecting late-expressed traits. We build a theoretical model showing that in a metapopulation this will result in faster senescence in demes with low genetic diversity (i.e. low effective size), and confirm this prediction with a large-scale molecular and common-garden study of Daphnia populations]
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| P90 |
Janicke, T., Vellnow, N., Lamy, T., Chapuis, E., David, P. 2014 Inbreeding depression of mating behavior and its reproductive consequences in a freshwater snail Behavioral Ecology 25(2): 288-299
[Following Janicke et al. 2013, we measure how inbreeding affects both male and female mating behaviour in the hermaphrodite Physa acuta. We observe significant, but moderate inbreeding depression on the number of encounters and copulations in both roles; however it seems insufficient to explain the large impacts of inbreeding on male paternity observed in J & al 2013 - suggesting an important role for postcopulatory processes linked to ejaculate size or sperm competition.]
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| P89 |
Hoffman, J.I., Simpson, F., David, P., Rijks, J. M., Kuiken, T., Thorne, M. A. S., Lacy, R., Dasmahapatra, K. K. 2014 High-throughput sequencing reveals inbreeding depression in a natural population. Proceedings of the National Academy of Sciences USA 111: 3775-3780
[ RAD-seq technology now generates thousands of loci, that provide unprecented precision in measures of variance in inbreeding, a key parameter to understand heterozygosity-fitness correlations (HFC). I here adapted the g2 method (defined in David et al. 2007 and implemented in RMES) to highly multilocus datasets, using approximations that considerably reduce computation time. We validated this method with a dataset of captive rodents with known pedigrees, and then used it to analyse HFC in wild populations of seals. Now available as R-package, see Stoffel et al. 2016]
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| P88 |
Bousset, L., Pointier, J.-P., David, P., Jarne, P. 2014 Neither variation loss, nor change in selfing rate is associated with the worldwide invasion of Physa acuta from its native North America Biological Invasions16:1769-1783
[A population genetic study of microsatellite diversity in Physa acuta, our pet snail, across the world. Physa acuta is an example of an outcrossing species that has invaded the world (from its probable native area in North America) without apparent loss in genetic diversity - contrasting with the case of selfing snail species such as Lymnaea columella]
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| P91 |
Pointier, J.-P., David, P., Jarne, P. 2011 The Biological Control of the Snail Hosts of Schistosomes: The Role of Competitor Snails and Biological Invasions, Chapter 9, pp 215-238 in Biomphalaria snails and larval trematodes, ed. by Toledo, R. & Fried, B., Springer Verlag, New York
[An account of how competition by (intentionnally or fortuitously) introduced species can affect populations of Biomphalaria glabrata and other vectors of schistosomes. This contains a detailed historical account of all freshwater snail invasions that occurred in Guadeloupe and Martinique, and their impacts ]
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P90 |
Massol, F., Duputié, A., David, P., Jarne P. 2011. Asymmetric patch size distribution leads to disruptive selection on dispersal. Evolution 65(2): 490-500
[Most models of dispersal evolution predict a single optimum, at odds with the diversity observed in nature, even among species or genotypes inhabiting the same landscape. We show that diversification of dispersal strategies naturally occurs provided patches of favorable habitats have unequal sizes, many of them small and a few large. This condition is fulfilled by many natural landscapes]
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| P89 |
Luquet, E., Lena, J.-P., David, P., Joly, P., Lengagne, T., Perrin, N., Plenet S. 2011 Consequences of genetic erosion on fitness and phenotypic plasticity in European tree frog populations (Hyla arborea), Journal of Evolutionary Biology, 24(1): 99-110
[We investigate the consequences of the loss of genetic diversity in small fragmented populations on the expression of an essential trait in juvenile tree frogs (tadpoles) : predator-induced plasticity. Plasticity is fully maintained, but at a higher cost, in genetically depauperate populations compared to large, more diverse ones]
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| P88 |
Luquet, E., David, P., Léna, J.-P., Joly, P., Konecny, L., Dufresnes, C., Perrin, N., Plénet, S. 2011 Heterozygosity-fitness correlations among wild populations of European tree frog (Hyla arborea) detect fixation load. Molecular Ecology, 20: 1877-1887
[In this study of heterozygosity-fitness correlations (HFC) in frogs, HFC arises from the mixing of populations with different average heterozygosity and larval growth, rather than from differences among individuals within populations. Therefore, covariation in larval traits and heterozygosity is due to fixation load rather than to within-population polymorphism]
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| P87 |
Jarne, P., Pointier, J.-P., David, P. 2011 Biosystematics of Biomphalaria spp. with an emphasis on Biomphalaria glabrata, , Chapter 1, pp 1-32 in Biomphalaria snails and larval trematodes, ed. by Toledo, R. & Fried, B., Springer Verlag, New York [Book chapter synthetizing the current knowledge on phylogeny, phylogeography, and population genetics of Biomphalaria glabrata, the main host of schistosomiasis in South America, and its allied species] |
| P86 |
Escobar, J.-S., Auld, J.R., Correa, A. C., Alonso, J. M., Bony, Y.K., Coutellec, M.-A., Koene, J.M., Pointier, J.-P., Jarne, P., David, P.2011 Patterns of mating-system evolution in hermaphroditic animals: correlations among selfing rate, inbreeding depression and the timing of reproduction. Evolution, 65(5) : 1233-1253 [A big collaborative study to measure selfing rates, waiting times (=reproductive delays when an individual is forced to self-fertilize), and inbreeding depression in a dozen new pulmonate species, and to collect similar published data on other animals. We show that species are either highly outcrossing, with significant waiting time and large inbreeding depression or highly inbred, with no significant waiting time nor inbreeding depression. This generalizes our previous results on Physa acuta (P76, P59, P33, P30) and mirrors previous results obtained in plants, with the difference that mixed-mating systems seem absent] |
| P85 |
Bierne, N., Welch, J., Loire, E., Bonhomme, F., David, P.2011.The coupling hypothesis: why genome scans may fail to map local adaptation genes. Molecular Ecology 20: 2044-2072 PDF Download supporting info[This is more than a cautionary note on genome scans ! Very long but worth the effort, it will change the way you think about molecular approaches to adaptation..Population geneticists often use genome scans, looking for molecular markers with exceptional differenciation between two habitats, to map genes with major effects on adaptation to habitat. We show that genes promoting pre or postmating isolation, irrespective of habitat, naturally become coupled with habitat specialization genes, so that clines in allele frequencies come to coincide with habitat boundaries. The abundance of isolation genes in genomes, and their efficiency at maintaining linkage disequilibrium with nearby neutral markers, make it likely that genome scans actually map them rather than habitat adaptation genes. We provide some simulations and convincing examples from the literature to illustrate this process] |
| P84 |
Szulkin, M., Bierne, N., David, P. 2010 Heterozygosity-fitness correlations : a time for reappraisal. Evolution 64 (5):1202-1217. [With the advent of microsatellites, years after the golden age of allozymes, we are witnessing a new bloom of studies on heterozygosity-fitness correlations (HFC). Yet lessons from the past (especially from old theory) have been ignored, and recent HFC studies often reveal misunderstandings that sound all too familiar to old - well, let's say middle-aged- population geneticists like myself. Do you want a theoretical summary as well as a practical guide on HFC ? Do you simply want the truth about HFC ? Read this paper...] |
| P83 |
Jarne P., Pointier J.-P., David P., Koene J. 2010 Basommatophoran Gastropods. pp173-196 in: The evolution of primary sexual characters in animals. Edited by Leonard J.L. and Córdoba-Aguilar A., Oxford University Press, New York [A book chapter with a synthesis on how reproductive organs are organized and evolve in hermaphroditic freshwater snails] |
| P82 |
Ferdy, J.-B., David, P., Rousset, F. 2010 Formalisations mathématiques de l'Evolution Biologique; chap. 1, pp1-32 in Biologie Evolutive, édité par F. Thomas, T. Lefèvre, M. Raymond , De Boeck Université, Paris [A book chapter in french on theoretical approaches in evolutionary biology, summarizing the bases of the three main ways by which trait evolution can be modelled, population genetics, quantitative genetics and game theory, their assumptions and interrelationships] |
| P81 |
David, P., Parmentier, M.-L.2010Evolution et développement. chap. 8, pp267-294 in Biologie Evolutive, edited by F. Thomas, T. Lefèvre, M. Raymond , De Boeck Université, Paris [A synthetic book chapter in french on evolution and development; We develop a more critical view than most other accounts of the subject, highlighting that evo-devo is still at a contemplative stage, accumulating spectacular discoveries, wondering at how worms and humans have inherited common developmental pathways from their remote common ancestor, but not yet close to a unified theory of how organism design evolves] |
| P80 |
Correa, A.C., Escobar, J.S., Durand, P., Renaud, F., David, P., Jarne, P., Pointier, J.-P., Hurtrez-Bousses, S. 2010 Bridging gaps in the molecular phylogeny of the Lymnaeidae (Gastropoda: Pulmonata), Vectors of Fasciolasis. BMC Evolutionary Biology 2010, 10:381 PDF [Lymnaeids are a fascinating but complicated family of freshwater snails; here is a detailed account of current knowledge on its phylogenetic history, revealing several big clades originating in different continents, cryptic species, and surprising intercontinental invasions .. all this to confirm that we should forget about many named subgenera which are clearly polyphyletic] |
| P79 |
Anthes, N., David, P., Auld, J.R., Hoffer, J.N.A., Jarne, P., Koene, J.M., Kokko, H., Lorenzi, M.C., Pélissié, B., Sprenger, D., Staikou, A., Schärer, L. 2010, Bateman Gradients in Hermaphrodites : An Extended Approach to Quantify Sexual Selection. American Naturalist176 : 249-263 PDF [Bateman gradients, i.e. linear regressions of fitness on mating activity, are the standard measure of sexual selection in separate-sex species. Hermaphrodites, with their two sexual functions, open the door to exciting new possibilities that may challenge, reinforce, or extend traditional sexual selection theory. This paper synthetizes two years of a highly collective and enjoyable brainstorming effort to provide a theoretical guide and a worked example - a snail, of course- on how we can measure, and what we can learn from, sexual selection gradients in hermaphrodites] |
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