Animal Biology , Vol. 57, No. 2, pp. 247-259 (2007) Koninklijke Brill NV, Leiden, 2007. Also available online - www.brill.nl/ab Aspects of body size and mate choice in the simultaneously hermaphroditic pond snail Lymnaea stagnalis JORIS M. KOENE 1 , ∗ , KORA MONTAGNE-WAJER 1 , ANDRIES TER MAAT 1 , 2 1 Institute of Ecological Science, Faculty of Earth and Life Sciences, Vrije Universiteit, Amsterdam, The Netherlands 2 Max-Planck-Institut für Ornithologie, Starnberg, Germany Abstract —Body size can be a good indicator of the quality of a potential mate in terms of fecundity. In many hermaphrodites, egg production is positively correlated with body size. Especially when donating sperm is costly, a preference for larger partners might be expected. Here we test this prediction for the great pond snail Lymnaea stagnalis . As expected, we find a clear effect of body size on egg production, and show that shell height can be used as a reliable predictor of body size. Additionally, behavioural observations reveal that these snails are not physically limited in mating with a much larger or smaller partner. Nonetheless, both in a choice experiment as well as in spontaneous copulations, we find no evidence of mate
Animal Biology – Brill
Published: Jan 1, 2007
Keywords: GASTROPOD; SEXUAL SELECTION; FECUNDITY; BASOMMATOPHORA; HERMAPHRODITE
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