| one publication added to basket [135017] | Intra-Population Variation of the Shell of Littorina rudis (Maton) (Mollusca: Prosobranchia)
In: Journal of Molluscan Studies. Oxford University Press: Reading. ISSN 0260-1230; e-ISSN 1464-3766, more
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| Keywords |
Animal products > Shells
Environmental factors
Population characteristics
Littorina rudis (Maton, 1797) [WoRMS]
Marine/Coastal |
| Abstract |
Shell variation within a single population of L. rudis , collected near the Biological Station at Trondheim, Norway, was studied. The variation of the shell features studied, which included the shape of the basal part of the outer lip, and the relative height of the spire, width of the shell and of the aperture, were found to be at least partially related to shell height. Furthermore, the shell shape in the population investigated, besides varying with age, also varies due to shell damage. No significant differences were found between the shapes of the shells of males and females. The shell characteristics of different populations of L. rudis also vary greatly, one of the causes being differences in the environmental conditions. When studying this variation between different populations, however, it must be emphasized that only undamaged shells of individuals of about the same age should be compared, in order to obviate the effects of the variability due to age differences and shell damage within each individual population. |
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