Genetic differentiation in three Sepia species (Mollusca: Cephalopoda) from Galician waters (north-west Iberian Peninsula)

Genetic differentiation in three Sepia species (Mollusca: Cephalopoda) from Galician waters... 227 126 126 2 2 A. Sanjuan M. Pérez-Losada A. Guerra Xenética Evolutive Molecular, Facultade de Ciencias-Bioloxía Universidade de Vigo Apartado 874 E-36200 Vigo Spain Instituto de Investigaciones Marinas (CSIC) Eduardo Cabello 6 E-36208 Vigo Spain Abstract The systematics of the genus Sepia is not yet clear. Morphological evidence has led to S. officinalis Linnaeus, 1758 being considered as belonging to the subgenus Sepia sensu stricto , and S. orbignyana Férussac, 1826 and S. elegans Blainville, 1827 as belonging to the subgenus Rhombosepion . Samples of 30 individuals of S. officinalis and S. orbignyana from both sides of an oceanographic boundary off the north-west Iberian Peninsula, and a sample of S. elegans from the northern side, were collected in 1993–1994. Allozyme electrophoresis for 32 presumptive loci revealed low levels of genetic variability for the three Sepia species (mean expected heterozygosity estimates were <0.052). No significant differences in allozyme frequencies were detected among populations of either S. officinalis or S. orbignyana . The genetic identities ( I ) of S. officinalis and S. orbignyana ( I =0.12) and of S. elegans ( I =0.13) were significantly different from that of S. orbignyana and S. elegans ( I =0.49). The former are typical of values for confamilial genera, and a new generic status is proposed for the latter two species, which become Rhombosepion orbignyana (Férussac, 1826) and R. elegans (Blainville, 1827). http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Marine Biology Springer Journals

Genetic differentiation in three Sepia species (Mollusca: Cephalopoda) from Galician waters (north-west Iberian Peninsula)

Marine Biology, Volume 126 (2) – Aug 1, 1996

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Publisher
Springer Journals
Copyright
Copyright © 1996 by Springer-Verlag
Subject
Life Sciences; Biomedicine general; Oceanography; Ecology; Microbiology; Zoology
ISSN
0025-3162
eISSN
1432-1793
D.O.I.
10.1007/BF00347450
Publisher site
See Article on Publisher Site

Abstract

227 126 126 2 2 A. Sanjuan M. Pérez-Losada A. Guerra Xenética Evolutive Molecular, Facultade de Ciencias-Bioloxía Universidade de Vigo Apartado 874 E-36200 Vigo Spain Instituto de Investigaciones Marinas (CSIC) Eduardo Cabello 6 E-36208 Vigo Spain Abstract The systematics of the genus Sepia is not yet clear. Morphological evidence has led to S. officinalis Linnaeus, 1758 being considered as belonging to the subgenus Sepia sensu stricto , and S. orbignyana Férussac, 1826 and S. elegans Blainville, 1827 as belonging to the subgenus Rhombosepion . Samples of 30 individuals of S. officinalis and S. orbignyana from both sides of an oceanographic boundary off the north-west Iberian Peninsula, and a sample of S. elegans from the northern side, were collected in 1993–1994. Allozyme electrophoresis for 32 presumptive loci revealed low levels of genetic variability for the three Sepia species (mean expected heterozygosity estimates were <0.052). No significant differences in allozyme frequencies were detected among populations of either S. officinalis or S. orbignyana . The genetic identities ( I ) of S. officinalis and S. orbignyana ( I =0.12) and of S. elegans ( I =0.13) were significantly different from that of S. orbignyana and S. elegans ( I =0.49). The former are typical of values for confamilial genera, and a new generic status is proposed for the latter two species, which become Rhombosepion orbignyana (Férussac, 1826) and R. elegans (Blainville, 1827).

Journal

Marine BiologySpringer Journals

Published: Aug 1, 1996

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