Spatial variation of shell morphometrics in the subantarctic land snail Notodiscus hookeri from Crozet and Kerguelen Islands.
International audience 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...
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ftunivrennes1hal:oai:HAL:hal-00168125v1 2024-05-12T08:06:26+00:00 Spatial variation of shell morphometrics in the subantarctic land snail Notodiscus hookeri from Crozet and Kerguelen Islands. Madec, Luc Bellido, Alain Ecosystèmes, biodiversité, évolution Rennes (ECOBIO) Université de Rennes (UR)-Institut Ecologie et Environnement - CNRS Ecologie et Environnement (INEE-CNRS) Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR) Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS) 2007 https://hal.science/hal-00168125 https://doi.org/10.1007/s00300-007-0318-7 en eng HAL CCSD Springer Verlag info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-007-0318-7 hal-00168125 https://hal.science/hal-00168125 doi:10.1007/s00300-007-0318-7 ISSN: 0722-4060 EISSN: 1432-2056 Polar Biology https://hal.science/hal-00168125 Polar Biology, 2007, 30 (12), pp.1571-1578. ⟨10.1007/s00300-007-0318-7⟩ [SDE.BE]Environmental Sciences/Biodiversity and Ecology info:eu-repo/semantics/article Journal articles 2007 ftunivrennes1hal https://doi.org/10.1007/s00300-007-0318-7 2024-04-18T00:23:50Z International audience 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 intraisland 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. Article in Journal/Newspaper Kerguelen Islands Polar Biology Université de Rennes 1: Publications scientifiques (HAL) Kerguelen Kerguelen Islands Polar Biology 30 12 1571 1578 |
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Open Polar |
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Université de Rennes 1: Publications scientifiques (HAL) |
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ftunivrennes1hal |
language |
English |
topic |
[SDE.BE]Environmental Sciences/Biodiversity and Ecology |
spellingShingle |
[SDE.BE]Environmental Sciences/Biodiversity and Ecology Madec, Luc Bellido, Alain Spatial variation of shell morphometrics in the subantarctic land snail Notodiscus hookeri from Crozet and Kerguelen Islands. |
topic_facet |
[SDE.BE]Environmental Sciences/Biodiversity and Ecology |
description |
International audience 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 intraisland 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. |
author2 |
Ecosystèmes, biodiversité, évolution Rennes (ECOBIO) Université de Rennes (UR)-Institut Ecologie et Environnement - CNRS Ecologie et Environnement (INEE-CNRS) Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR) Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Madec, Luc Bellido, Alain |
author_facet |
Madec, Luc Bellido, Alain |
author_sort |
Madec, Luc |
title |
Spatial variation of shell morphometrics in the subantarctic land snail Notodiscus hookeri from Crozet and Kerguelen Islands. |
title_short |
Spatial variation of shell morphometrics in the subantarctic land snail Notodiscus hookeri from Crozet and Kerguelen Islands. |
title_full |
Spatial variation of shell morphometrics in the subantarctic land snail Notodiscus hookeri from Crozet and Kerguelen Islands. |
title_fullStr |
Spatial variation of shell morphometrics in the subantarctic land snail Notodiscus hookeri from Crozet and Kerguelen Islands. |
title_full_unstemmed |
Spatial variation of shell morphometrics in the subantarctic land snail Notodiscus hookeri from Crozet and Kerguelen Islands. |
title_sort |
spatial variation of shell morphometrics in the subantarctic land snail notodiscus hookeri from crozet and kerguelen islands. |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://hal.science/hal-00168125 https://doi.org/10.1007/s00300-007-0318-7 |
geographic |
Kerguelen Kerguelen Islands |
geographic_facet |
Kerguelen Kerguelen Islands |
genre |
Kerguelen Islands Polar Biology |
genre_facet |
Kerguelen Islands Polar Biology |
op_source |
ISSN: 0722-4060 EISSN: 1432-2056 Polar Biology https://hal.science/hal-00168125 Polar Biology, 2007, 30 (12), pp.1571-1578. ⟨10.1007/s00300-007-0318-7⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-007-0318-7 hal-00168125 https://hal.science/hal-00168125 doi:10.1007/s00300-007-0318-7 |
op_doi |
https://doi.org/10.1007/s00300-007-0318-7 |
container_title |
Polar Biology |
container_volume |
30 |
container_issue |
12 |
container_start_page |
1571 |
op_container_end_page |
1578 |
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1798848925473439744 |