Size-assortative copulation in the simultaneously hermaphroditic pond snail Radix auricularia (Gastropoda: Pulmonata)

in Animal Biology
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To better understand the importance of body size in hermaphroditic mating, we studied the mating behaviour of the pond snail Radix auricularia. This simultaneous hermaphrodite exhibits a positive correlation between body size and egg production and provides weak evidence for size-assortative mating. In addition to this mating pattern, the partner performing the male role was significantly smaller than the mounted partner, performing the female role. In this study, two laboratory experiments were done to test whether body size has (1) an effect on mate choice of the sperm donor, and (2) poses mechanical constraints. These snails did not display physical limitation in mating with a much larger or smaller partner. In the mate choice experiment, we found no evidence for significant preferences for large partners. Therefore, mate choice of sperm donor and mechanical constraints are not likely to contribute to the formation of size-assortatively mating pairs in this species, which contributes to understanding about how these processes work in hermaphrodites.

Size-assortative copulation in the simultaneously hermaphroditic pond snail Radix auricularia (Gastropoda: Pulmonata)

in Animal Biology



AngeloniL.BradburyJ.W. (1999) Body size influences mating strategies in a simultaneously hermaphroditic sea slug, Aplysia vaccaria. Ethol. Ecol. Evol.11187-195.

AngeloniL. (2003) Sexual selection in a simultaneous hermaphrodite with hypodermic insemination: body size, allocation to sexual roles and paternity. Anim. Behav.66417-426.

AngeloniL.BradburyJ.W.BurtonR.S. (2003) Multiple mating, paternity, and body size in a simultaneous hermaphrodite, Aplysia californica. Behav. Ecol.14554-560.

AngeloniL.BradburyJ.W.CharnovE.L. (2002) Body size and sex allocation in simultaneously hermaphroditic animals. Behav. Ecol.13419-426.

AnthesN. (2010) Mate choice and reproductive conflict in simultaneous hermaphrodites. In: KappelerP.K. (Ed.) Animal Behaviour: Evolution and Mechanisms pp.  329-357. Springe.

ArnqvistG.RoweL.KrupaJ.SihA. (1996) Assortative mating by size: a meta-analysis of mating patterns in water striders. Evol. Ecol.10265-284.

BaurB. (1992) Random mating by size in the simultaneously hermaphroditic land snail Ananta arbustorum: experiments and an explanation. Anim. Behav.43511-518.

BrownW.D. (1993) The cause of size-assortative mating in the leaf beetle Trirhabda Canadensis (Coleoptera: Chrysomelidae). Behav. Ecol. Sociobiol.33151-157.

ChaineA.AngeloniL. (2005) Size-dependent mating and gender choice in a simultaneous hermaphrodite, Bulla gouldiana. Behav. Ecol. Sociobiol.5958-68.

CharnovE.L. (1996) Sperm competition and sex allocation in simultaneous hermaphrodites. Evol. Ecol.10457-462.

CrespiB.J. (1989) Causes of assortative mating in arthropods. Anim. Behav.38980-1000.

CrozierW.J. (1918) Assortative mating in a nudibranch, Chromodoris zebra Heilprin. J. Exp. Zool.27247-292.

DeWittT.J. (1991) Mating behavior of the freshwater pulmonate snail, Physa gyrina. Am. Malacol. Bull.981-84.

DewittT.J. (1996) Gender contests in a simultaneous hermaphrodite snail: a size-advantage model for behaviour. Anim. Behav.51345-351.

EdwardsD.C. (1968) Reproduction in Olivella biplicata. Veliger10297-304.

Gagliardi-SeeleyJ.L.ItzkowitzM. (2006) Male size predicts the ability to defend offspring in the biparental convict cichlid Archocentrus nigrofasciatus. J. Fish Biol.691239-1244.

GianguzzaP.BadalamentiF.JensenK.R.ChemelloR.CannicciS.RiggioS. (2004) Body size and mating strategies in the simultaneous hermaphrodite Oxynoe olivacea (Mollusca, Opisthobranchia, Sacoglossa). Funct. Ecol.18899-906.

HarariA.R.HandlerA.M.LandoltP.J. (1999) Size-assortative mating, male choice and female choice in the curculionid beetle Diaprepes abbreviates. Anim. Behav.581191-1200.

JiangY.BolnickD.I.KirkpatrickM. (2013) Assortative mating in animals. Am. Nat.181E125-E138.

JohnsonL.J. (1999) Size assortative mating in the marine snail Littorina neglecta. J. Mar. Biol. Assoc. UK.791131-1132.

KoeneJ.M.Montagne-WajerK.Ter MaatA. (2007) Aspects of body size and mate choice in the simultaneously hermaphroditic pond snail Lymnaea stagnalis. Anim. Biol.57247-259.

LeonardJ.L. (1991) Sexual conflict and the mating systems of simultaneously hermaphroditic gastropods. Am. Malacol. Bull.945-58.

MacDiarmidA.B.ButlerM.J. (1999) Sperm economy and limitation in spiny lobsters. Behav. Ecol. Sociobiol.4614-24.

MarcoA.KieseckerJ.M.ChiversD.P.BlausteinA.R. (1998) Sex recognition and mate choice by male western toads, Bufo boreas. Anim. Behav.551631-1635.

MichielsN.K. (1998) Mating conflicts and sperm competition in simultaneous hermaphrodites. In: BirkheadT.R.MøllerA.P. (Eds) Sperm Competition and Sexual Selection pp.  219-254. Academic PressLondon.

NakaderaY.SwartE.M.MaasJ.P.Montagne-WajerK.Ter MaatA.KoeneJ.M. (2015) Effects of age, size, and mating history on sex role decision of a simultaneous hermaphrodite. Behav. Ecol.26232-241.

Ohbayashi-HodokiK.IshihamaF.ShimadaM. (2004) Body size-dependent gender role in a simultaneous hermaphrodite freshwater snail, Physa acuta. Behav. Ecol.15976-981.

OtsukaC.RougerY.TobachE. (1980) A possible relationship between size and reproductive behavior in a population of Aplysia punctata Cuvier, 1803. Veliger23159-162.

PalP.ErlandssonJ.SköldM. (2006) Size-assortative mating and non-reciprocal copulation in a hermaphroditic intertidal limpet: test of the mate availability hypothesis. Mar. Biol.1481273-1282.

ParkerG.A. (1983) Mate quality and mating decisions. In: BatesonP. (Ed.) Mate Choice pp.  141-166. Cambridge University PressCambridge.

PenningsS.C. (1991) Reproductive behavior of Aplysia californica Cooper: diel patterns, sexual roles and mating aggregations. J. Exp. Mar. Biol. Ecol.149249-266.

RidleyM. (1983) The Explanation of Organic Diversity: the Comparative Method and Adaptations for Mating. Clarendon PressClarendon, Oxford.

RiechertS.E.JohnsP.M. (2003) Do female spiders select heavier males for the genes for behavioral aggressiveness they offer their offspring? Evolution571367-1373.

RobertsonJ.G.M. (1990) Female choice increases fertilization success in the Australian frog, Uperiola laevigata. Anim. Behav.39639-645.

SavalliU.M.FoxC.W. (1998) Sexual selection and the fitness consequences of male body size in the seed beetle Stator limbarus. Anim. Behav.55473-483.

StaubR.RibiG. (1995) Size-assortative mating in a natural population of Viviparus ater (Gastropoda: Prosobranchia) in Lake Zürich, Switzerland. J. Mollus. Stud.61237-247.

TomiyamaK. (1996) Mate-choice criteria in a protandrous simultaneously hermaphroditic land snail Achatina fulica (Férussac) (Stylommatophora: Achatinidae). J. Mollus. Stud.62101-111.

TrigwellJ.A.DussartG.B.J.Vianey-LiaudM. (1997) Pre-copulatory behaviour of the freshwater hermaphrodite snail Biomphalaria glabrata (Say, 1818) (Gastropoda: Pulmonata). J. Mollus. Stud.63116-120.

WoldaH. (1963) Natural populations of the polymorphic landsnail Cepaea nemoralis (L.). Arch. néerl. Zool.15381-471.

YuT.L.WangL.M. (2013) Mate choice and mechanical constraint on size-assortative paring success in a simultaneous hermaphroditic pond snail Radix lagotis (Gastropoda: Pulmonata) on the Tibetan Plateau. Ethology119738-744.

YusaY. (1996) The effects of body size on mating features in a field population of the hermaphroditic sea hare Aplysia kurodai Baba, 1939 (Gastropoda: Opisthobranchia). J. Mollus. Stud.62381-386.

ZahradnikT.D.LemayM.A.BouldingE.G. (2008) Choosy males in a littorinid gastropod: male Littorina subrotundata prefer large and virgin females. J. Mollus. Stud.74245-251.


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    The relationship between the shell sizes of mating partners in a natural population of Radix auricularia.

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    The relationship between shell size and fecundity (number of eggs produced within one week of collection in the lab) in Radix auricularia.

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