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Journal Molluscan Studies Advance Access originally published online on May 26, 2006
Journal of Molluscan Studies 2006 72(3):229-233; doi:10.1093/mollus/eyl006
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© The Author 2006. Published by Oxford University Press on behalf of The Malacological Society of London, all rights reserved

Life-history variation in selfing multilocus genotypes of the land slug Deroceras laeve (Pulmonata: Agriolimacidae)

Kurt Jordaens1, Jan Pinceel1 and Thierry Backeljau1,2

1 Department of Biology, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium; and 2 Department of Invertebrates, Royal Belgian Institute of Natural Sciences, Vautierstraat 29, 1000 Brussels, Belgium

Correspondence: K. Jordaens; e-mail: kurt.jordaens{at}ua.ac.be

The land slug Deroceras laeve shows an enormous variation in life-history traits. Here, we compared several life-history characters (i.e. length of the prereproductive period, growth during the egg-laying period, number of eggs, hatching success) within and among five selfing homozygous multilocus genotypes (MLG) and investigated a possible trade-off between the number of eggs produced during the egg-laying period and growth during the egg-laying period. Life-history traits were highly variable. There was no significant correlation between slug size and fecundity. Slugs that matured early produced more eggs than slugs that matured later. Life-history traits were significantly different among MLGs, suggesting that genetic factors may affect and explain at least part of the variation in life-history traits in D. laeve. Finally, we found no evidence of a trade-off between the number of eggs produced during the egg-laying period and growth during the egg-laying period.

(Received 1 June 2005; accepted 28 October 2005)


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