Marine Biology

, Volume 161, Issue 10, pp 2433–2443

Genetic structure in native and non-native populations of the direct-developing gastropod Crepidula convexa

Original Paper

DOI: 10.1007/s00227-014-2519-2

Cite this article as:
Cahill, A.E. & Viard, F. Mar Biol (2014) 161: 2433. doi:10.1007/s00227-014-2519-2

Abstract

In many marine invertebrate species, larval development plays an important role in population connectivity and gene flow: species with direct benthic development generally show more genetic structure than those with planktonic development. We used nuclear markers (microsatellites) to determine population genetic structure of the direct-developing snail Crepidula convexa (Gastropoda: Calyptraeidae) in seven populations with 15–85 individuals each within its native range of the northwest Atlantic and compared it to Crepidula fornicata, a congener with planktonic development. Our results are consistent with general expectations and previous work in these species with other markers: C. convexa had greater population structure and even at a regional scale shows significant isolation-by-distance, in contrast to C. fornicata. We also genotyped a single population of C. convexa introduced to the northeastern Pacific to investigate the prediction of reduced genetic diversity following introduction (founder effect). We did not find a reduction in genetic diversity, suggesting that this non-native population may be characterized by multiple introductions. This pattern is consistent with many other introduced populations of marine invertebrates, including C. fornicata.

Supplementary material

227_2014_2519_MOESM1_ESM.pdf (86 kb)
Supplementary material 1 (PDF 85 kb)

Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  1. 1.Department of Ecology and EvolutionStony Brook UniversityStony BrookUSA
  2. 2.CNRS, UMR 7144, Team Div&Co, Lab. Adaptation et Diversité en Milieu MarinStation Biologique de RoscoffRoscoffFrance
  3. 3.Sorbonne UniversitésUPMC Univ Paris 06, UMR 7144RoscoffFrance

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