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Article

Karyotype Characterization of Nine Periwinkle Species (Gastropoda, Littorinidae)

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Departamento Bioquímica, Xenética e Inmunoloxía, Universidade de Vigo, E-36310 Vigo, Spain
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CIMUS Biomedical Research Institute, University of Santiago de Compostela, E-15706 Santiago de Compostela, Spain
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Systems Biotechnology Group, Department of Applied Biocatalysis, CSIC-Institute of Catalysis and Petrochemistry, C/Marie Curie 2, E-28049 Madrid, Spain
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CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO, Laboratório Associado, Campus Agrário de Vairão, Universidade do Porto, 4485-661 Vairão, Portugal
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Department of Biological Sciences, Florida International University, Miami, FL 33199, USA
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CIM-UVIGO, Centro de Investigación Mariña, Universidade de Vigo, E-36331 Vigo, Spain
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Department of Animal and Plant Sciences, University of Sheffield, Sheffield S10 2TN, UK
*
Author to whom correspondence should be addressed.
Genes 2018, 9(11), 517; https://doi.org/10.3390/genes9110517
Received: 14 September 2018 / Revised: 12 October 2018 / Accepted: 19 October 2018 / Published: 23 October 2018
(This article belongs to the Section Animal Genetics and Genomics)
Periwinkles of the family Littorinidae (Children, 1834) are common members of seashore littoral communities worldwide. Although the family is composed of more than 200 species belonging to 18 genera, chromosome numbers have been described in only eleven of them. A molecular cytogenetic analysis of nine periwinkle species, the rough periwinkles Littorina arcana, L. saxatilis, and L. compressa, the flat periwinkles L. obtusata and L. fabalis, the common periwinkle L. littorea, the mangrove periwinkle Littoraria angulifera, the beaded periwinkle Cenchritis muricatus, and the small periwinkle Melarhaphe neritoides was performed. All species showed diploid chromosome numbers of 2n = 34, and karyotypes were mostly composed of metacentric and submetacentric chromosome pairs. None of the periwinkle species showed chromosomal differences between male and female specimens. The chromosomal mapping of major and minor rDNA and H3 histone gene clusters by fluorescent in situ hybridization demonstrated that the patterns of distribution of these DNA sequences were conserved among closely related species and differed among less related ones. All signals occupied separated loci on different chromosome pairs without any evidence of co-localization in any of the species. View Full-Text
Keywords: periwinkles; chromosome; fluorescent in situ hybridization; histone genes; ribosomal RNA genes periwinkles; chromosome; fluorescent in situ hybridization; histone genes; ribosomal RNA genes
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MDPI and ACS Style

García-Souto, D.; Alonso-Rubido, S.; Costa, D.; Eirín-López, J.M.; Rolán-Álvarez, E.; Faria, R.; Galindo, J.; Pasantes, J.J. Karyotype Characterization of Nine Periwinkle Species (Gastropoda, Littorinidae). Genes 2018, 9, 517. https://doi.org/10.3390/genes9110517

AMA Style

García-Souto D, Alonso-Rubido S, Costa D, Eirín-López JM, Rolán-Álvarez E, Faria R, Galindo J, Pasantes JJ. Karyotype Characterization of Nine Periwinkle Species (Gastropoda, Littorinidae). Genes. 2018; 9(11):517. https://doi.org/10.3390/genes9110517

Chicago/Turabian Style

García-Souto, Daniel, Sandra Alonso-Rubido, Diana Costa, José M. Eirín-López, Emilio Rolán-Álvarez, Rui Faria, Juan Galindo, and Juan J. Pasantes. 2018. "Karyotype Characterization of Nine Periwinkle Species (Gastropoda, Littorinidae)" Genes 9, no. 11: 517. https://doi.org/10.3390/genes9110517

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