A preliminary study on genetic differentiation in Littorina saxatilis from Galway Bay, Ireland: Littorina tenebrosa Montagu — a valid species or ecotype?
Gosling, E.M.; Wilson, I.F.; Andrews, J. (1998). A preliminary study on genetic differentiation in Littorina saxatilis from Galway Bay, Ireland: Littorina tenebrosa Montagu — a valid species or ecotype?, in: O'Riordan, R.M. et al. Aspects of littorinid biology: Proceedings of the fifth international symposium on littorinid biology, held in Cork, Ireland, 7-13 September 1996. Developments in Hydrobiology, 133: pp. 21-25. https://dx.doi.org/10.1007/978-94-011-5336-2_3
In: O'Riordan, R.M. et al. (1998). Aspects of littorinid biology: Proceedings of the fifth international symposium on littorinid biology, held in Cork, Ireland, 7-13 September 1996. Developments in Hydrobiology, 133. Springer Science+Business Media: Dordrecht. ISBN 978-94-010-6243-5; e-ISBN 978-94-011-5336-2. XI, 248 pp. https://dx.doi.org/10.1007/978-94-011-5336-2, more
In: Dumont, H.J. (Ed.) Developments in Hydrobiology. Kluwer Academic/Springer: The Hague; London; Boston; Dordrecht. ISSN 0167-8418, more
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Document type: Conference paper
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| Keywords |
Littorina saxatilis (Olivi, 1792) [WoRMS]; Littorina tenebrosa (Montagu, 1803) [WoRMS]
Marine/Coastal |
| Author keywords |
Littorina saxatilis; L. tenebrosa; allozymes; genetic differentiation; genetic distance |
| Authors | | Top |
- Gosling, E.M.
- Wilson, I.F.
- Andrews, J.
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| Abstract |
Littorina tenebrosa is a small fragile-shelled periwinkle which lives on permanently submerged algae in coastal lagoons and non-tidal brackish pools. This periwinkle is a member of the rough periwinkle group which also comprises Littorina saxatilis, L. arcana, L. compressa and L. neglecta and is most closely related to L. saxatilis although its exact systematic status is in some doubt. Based on its unique ecology many believe L. tenebrosa to be a valid species. However, shell morphometric and allozyme analyses on Scottish and Swedish populations of L. tenebrosa and L. saxatilis have indicated that the two periwinkles are virtually identical. Preliminary results on five allozyme loci (AAT-1, GPI, PGM-1, PGM-2 and PNP) in samples of L. tenebrosa and L. saxatilis from Golam Head, Lettermullen, and other locations on the west coast of Ireland show L. tenebrosa to be genetically differentiated from L. saxatilis. At Golam Head, where opportunities for gene flow occur between the two taxa, L. tenebrosa is as genetically differentiated from local L. saxatilis as it is from L. saxatilis from more geographically distant locations. |
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