Advertisement

Polar Biology

, Volume 30, Issue 12, pp 1571–1578 | Cite as

Spatial variation of shell morphometrics in the subantarctic land snail Notodiscus hookeri from Crozet and Kerguelen Islands

  • Luc Madec
  • Alain Bellido
Original Paper

Abstract

The land snail Notodiscus hookeri, widely distributed in subantarctic islands, shows a large intraspecific variation in shell morphology. In the present work, shell size and form of individuals from populations located in Crozet and Kerguelen archipelagos were investigated by means of multivariate statistics. Variation in shell morphometrics was analysed after the partitioning of the overall variation into size and shape components by means of a principal component-based approach. Shell size shows a significant spatial heterogeneity, which seems essentially related to environmental pressures. Previous works pointed to a greater conchological variation between populations from Kerguelen but present observations show that intra-island variances are not significantly different in the two islands studied. Variation in shell shape splits the populations into two main entities because of different allometric relationships between two shell height components and all other measurements. However, using geographical affinities of populations as instrumental variables shows that more complex environmental features interfered in population clustering.

Keywords

Instrumental Variable Land Snail Shell Size Shell Shape Shape Component 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

This research was supported by the Institut Polaire Français P.E.Victor (IPEV; programme 136). We are grateful to Y. Le Gallic, E. de Oliveira and to their supervisor Y. Frenot for their work on the field and in the laboratory. P. Vernon, M. Lebouvier and two anonymous referees are acknowledged for their useful suggestions on the manuscript.

References

  1. Bookstein FL (1989) “Size and shape”: a comment on semantics. Syst Zool 38:173–180CrossRefGoogle Scholar
  2. Boulding EG, Hay TK (1993) Quantitative genetics of shell form of an intertidal snail: constraints on short-term response to selection. Evolution 47:576–592CrossRefGoogle Scholar
  3. Burla H, Stahel W (1983) Altitudinal variation in Arianta arbustorum (Mollusca Pulmonata) in the Swiss Alps. Genetica 62:95–108CrossRefGoogle Scholar
  4. Cadima JFCL, Jolliffe IT (1996) Size- and shape-related principal component analysis. Biometrics 52:710–716CrossRefGoogle Scholar
  5. Cain AJ (1981) Variation in shell shape and size of helicid snails in relation to other Pulmonates in faunas of the Palaeartic region. Malacologia 21:149–176Google Scholar
  6. Cameron RAD, Cook LM (1989) Shell size and shape in Madeiran land snails: do niches remain unfilled? Biol J Linn Soc 36:79–96Google Scholar
  7. Carjaval-Rodriguez A, Conde-Padin P, Rolan-Alvarez E (2005) Decomposing shell form into size and shape by morphometric geometric methods in two sympatric ecotypes of Littorina saxatilis. J Mollus Stud 71:313–318CrossRefGoogle Scholar
  8. Chiba S (2005) Appearance of morphological novelty in a hybrid zone between two species of land snail. Evolution 59:1712–1720PubMedGoogle Scholar
  9. Chiu YW, Chen HC, Lee SC, Chen CA (2002) Morphometric analysis of shell and operculum variations in the viviparid snail Cipangopaludina chinensis (Mollusca: Gastropoda) in Taiwan. Zool Stud 41:321–341Google Scholar
  10. Dell RK (1964) Land snails from Subantarctic Islands. Trans Roy Soc N Z 11:167–173Google Scholar
  11. Falla RA (1960) Ocean birds as dispersal agents. Proc R Soc Lond Ser B 152:655–659CrossRefGoogle Scholar
  12. Gittenberger E, Groenenberg DSJ, Kokshoorn B, Preece RC (2006) Molecular trails from hitch-hiking snails. Nature 439:409PubMedCrossRefGoogle Scholar
  13. Goodfriend GA (1986) Variation in land snail shell form and size and its causes: a review. Syst Zool 35:204–223CrossRefGoogle Scholar
  14. Gould SJ, Woodruff DS (1978) Natural history of Cerion. VIII. Little Bahama Bank—a revision based on genetics, morphometrics and geographic distribution. Bull Mus Comp Zool 148:371–415Google Scholar
  15. Gould SJ, Woodruff DS (1986) Evolution and systematics of Cerion (Mollusca: Pulmonata) on New Providence island: a radical revision. Bull Am Mus Nat Hist 182:389–490Google Scholar
  16. Johnson MS, Black R (2000) Association with habitat versus geographic cohesiveness: size and shape of Bembicium vittatum Philippi (Gastropoda: Littorinidae) in the Houtman Abrolhos Islands. Biol J Linn Soc 71:563–580CrossRefGoogle Scholar
  17. Mc Ghee Jr GR (1999) Theoretical morphology: the concept and its applications. Columbia University Press, New YorkGoogle Scholar
  18. Madec L, Bellido A, Guiller A (2003) Shell shape of the land snail Helix aspersa in North Africa: further evidence of a phylogeographical splitting. Heredity 91:224–231PubMedCrossRefGoogle Scholar
  19. Monteiro LR, Bordin B, Furtado dos Reis S (2000) Shape distances, shape spaces and the comparison of morphometric methods. Trends Ecol Evol 15:217–220PubMedCrossRefGoogle Scholar
  20. Parsons KE (1997) Contrasting patterns of heritable geographic variation in shell morphology and growth potential in the marine gastropod Bembicium vittatum: evidence form field experiments. Evolution 51:784–796CrossRefGoogle Scholar
  21. Pfenninger M, Carsten N, Magnin F (2007) Intraspecific range dynamics and niche evolution in Candidula land snail species. Biol J Linn Soc 90:303–317CrossRefGoogle Scholar
  22. Phillimore AB, Owens IPF (2006) Are subspecies useful in evolutionary and conservation biology? Proc R Soc B 273:1049–1053PubMedCrossRefGoogle Scholar
  23. Preece RC (1995) Systematic review of the land snails of the Pitcairn Islands. Biol J Linn Soc 56:273–307CrossRefGoogle Scholar
  24. Pugh PJA, Lewis Smith RI, Smith BJ (2000) Origin of a new land snail, Notodiscus sp. (Charopidae: Pulmonata), on South Georgia. In: Southern connections 2000, Abstracts of the third Southern Connection Congress, Lincoln University, CanterburyGoogle Scholar
  25. Pugh PJA, Scott B (2002) Biodiversity and biogeography of non-marine Mollusca on the islands of the Southern Ocean. J Nat Hist 36:927–952CrossRefGoogle Scholar
  26. Rohlf FJ, Loy A, Corti M (1996) Morphometric analysis of old world Talpidae (Mammalia, Insectivora) using partial-warp scores. Syst Biol 45:344–362CrossRefGoogle Scholar
  27. Schilthuizen M, Cabanban AS, Haase M (2004) Possible speciation with gene flow in tropical cave snails. J Zool Syst Evol Res 43:133–138CrossRefGoogle Scholar
  28. Solem A (1968) The subantarctic land snail Notodiscus hookeri (Reeve, 1854) (Pulmonata, Endodontidae). Proc Malac Soc Lond 38:251–266Google Scholar
  29. Solem A, Climo FM (1985) Structure and habitat correlations of sympatric New Zealand land snail species. Malacologia 26:1–30Google Scholar
  30. Somers KM (1989) Allometry, isometry and shape in principal components analysis. Syst Zool 38:169–173CrossRefGoogle Scholar
  31. Stone JR (1998) Landmark-based thin-plate spline relative warp analysis of Gastropod shells. Syst Biol 47:254–263CrossRefGoogle Scholar
  32. Thioulouse J, Chessel D, Dolédec S, Olivier JM (1997) ADE-4: a multivariate analysis and graphical display software. Stat Comput 7:75–83CrossRefGoogle Scholar
  33. Vagvolgyi J (1975) Body size, aerial dispersal and origin of the Pacific land snail fauna. Syst Zool 24:465–488CrossRefGoogle Scholar
  34. Ward JH (1963) Hierarchical grouping to optimize an objective function. J Am stat Assoc 58:238–244CrossRefGoogle Scholar
  35. Yoccoz N (1993) Morphométrie et analyses multidimensionnelles. Une revue des méthodes séparant taille et forme. In: Lebreton JD, Asselain B (eds) Biométrie et Environnement. Masson, Paris, pp 73–99Google Scholar

Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  1. 1.UMR CNRS 6553Université de Rennes 1Rennes CedexFrance
  2. 2.UMR CNRS 6553PaimpontFrance

Personalised recommendations