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1
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Snails in the mind: symbolism and imagery

100%
Cameron R. A. D.
Folia Malacologica
|
2016
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tom 24
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nr 1
2
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Correlated phenotypic responses to habitat difference in Cepaea nemoralis (L.)

84%
Cameron R. A. D., Cook L. M.
Folia Malacologica
|
2012
|
tom 20
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nr 4
Using data from the Evolution Megalab Project paired samples of Cepaea nemoralis (L.) coming respectively from woodland and open habitats have been examined for joint response to habitat difference at different polymorphic loci. Throughout the range of the species there is a tendency for open habitat samples to have different frequencies at shell colour and pattern loci from those in neighbouring woods. In Britain, the chance that the frequency of yellow is higher in open than in wooded habitats is about 67 per cent. There is a 41 per cent chance that they will have both higher frequency of yellow and a lower frequency of unbanded at the linked banding locus. Responses of unbanded and the unlinked mid-banded locus are to a large extent independent, however. The chance that open habitats have higher yellow and a lower value for the sum of unbanded and mid-banded (effectively unbanded) is 42 per cent, while the chance that the open habitat sample is more yellow, less unbanded and less mid-banded is no more than 19 per cent. The colour, but not the banding difference was also found in the data for continental Europe. The effect of habitat acts within a polymorphic system. For Britain closely spaced sample pairs have an average frequency difference (Euclidean distance) between habitats at the three loci of about 0.26. As a result of other factors affecting the polymorphism this difference increases to 0.43 for pairs 1 km apart and 0.59 at 10 km apart. These results extend the original findings of CAIN & SHEPPARD (1954) and others but show clearly that the habitat is only part of the explanation for polymorphism in Cepaea.
3
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Land snail communities at Lake Hancza (NE. Poland)

84%
Pokryszko B. M., Cameron R. A. D.
Folia Malacologica
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2006
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tom 14
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nr 2
The snail fauna of human-transformed forests (originally ranging from oak-hornbeam to alder swamps) at Lake Hañcza and two nearby lakes in NE. Poland includes 29 species, with 14–18 species per site. There are also four slug species. The ten sampling sites vary rather much in their species composition, the mean Nei index being 0.71 and IMAX 1.57; the heterogeneity does not seem to result from sampling error. In most sites 1–3 species contribute over 50% of total abundance. Most species recorded are common, euryoecious and widely distributed; restricted forest snails, timber-dwellers and vegetation climbers are nearly absent.
4
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Forest snail faunas in the Kaszuby Uplands (Pomerania): a rich northern refuge

84%
Cameron R. A. D., Pokryszko B. M.
Folia Malacologica
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2006
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tom 14
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nr 2
Forest snail faunas were sampled in three river gorges in the Kaszuby Uplands, Pomorze. 43 species were found, including 10 species of Clausiliidae. Taken with earlier records, these gorges hold 48 species. These faunas are markedly richer than most of those recorded in north and west Poland, especially for clausiliids, where up to eight species could be found in the same sample site. The fauna overall is very similar to that of the ancient Bia³owie¿a Forest much further east. The results suggest that many lowland forests in Poland have impoverished faunas, probably due to human activities, but there are a few refugia in which nearly all of the original forest fauna has survived. These give a better picture of natural patterns of distribution and change across the North European Plain.
5
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Forest malacocoenoses of the Romanian Carpathians

84%
Pokryszko B. M., Cameron R. A. D.
Folia Malacologica
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2010
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tom 18
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nr 3
6
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More city snails-Cepaea nemoralis in Goteborg, Sweden

68%
Cameron R. A. D., Cox R. J., von Proschwitz T., Horsak M.
Folia Malacologica
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2015
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tom 23
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nr 1
7
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Banat-a part of the Carpathians?

68%
Pokryszko B. M., Cameron R. A. D., Gheoca V.
Folia Malacologica
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2013
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tom 21
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nr 3
8
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A database for Crepaea variation in Poland

68%
Ozgo M., Pokryszko B. M., Cameron R. A. D.
Folia Malacologica
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2015
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tom 23
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nr 1
9
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The 17th World Congress of Malacology

68%
Pokryszko B. M., Ozgo M., Cameron R. A. D.
Folia Malacologica
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2011
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tom 19
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nr 2
10
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Cepaea nemoralis (L.) in Goteborg, S.W. Sweden: variation in a recent urban invader

68%
Cameron R. A. D., Cox R. J., von Proschwitz T., Horsak M.
Folia Malacologica
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2014
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tom 22
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nr 3
Although present since the mid 19th century, the introduced snail species Cepaea nemoralis has spread extensively in Göteborg, mainly in the last two decades. Early samples show the predominance of yellow-shelled morphs, but in modern populations pink shells predominate. There is great variation in morph frequencies among modern populations with high values of F ST , and with no relationships to habitat. The patterns shown resemble those seen in Sheffield (UK), a city also colonised over a similar time period, but differ from those seen in regions where the species has been established for much longer. The combination of early and recent records suggests not only that founder effects play a large part in determining morph frequencies, but that present populations derive from multiple colonisations from different sources.
11
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Cepaea vindobonensis (Férussac, 1821) in the Pieniny Mts

68%
Pokryszko B. M., Maltz T. K., Cameron R. A. D.
Folia Malacologica
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2004
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tom 12
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nr 3
Cepaea vindobonensis (Fér.), previously thought not to occur in the Polish Carpathians, was found in the valley of Biała Woda (Pieniny Mts.: Małe Pieniny).
12

At the Central European-Balkan transition: forest land snail faunas of the Banat contrasted with those of the Carpathian chain

68%
Cameron R. A. D., Pokryszko B. M., Gheoca V., Horsak M.
Acta Biologica Cracoviensia. Series Botanica. Supplement
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2013
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tom 55
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nr 1
13
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Variation in the shell colour and banding polymorphism of Cepaea nemoralis (L.) in rural areas around Wroclaw

68%
Pokryszko B. M., Cameron R. A. D., Horsak M.
Folia Malacologica
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2012
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tom 20
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nr 2
105 samples of Cepaea nemoralis (L.) were made in rural locations around the city of Wrocław in 2008-10. Variation in the shell colour and banding polymorphism showed no relationship to habitat, nor were there any large-scale geographical patterns. In some morphs, there were strong frequency correlations between samples close to one another, but these never extended beyond 20 km, and usually involved much shorter distances. Relative to populations within the city, these populations vary more among themselves, but are individually less polymorphic. Linkage disequilibria in common between city and country suggest a common origin. These results suggest that rural populations have a more recent origin, and that they are more isolated from one another than those in the city. A process of recent passive dispersal by humans, with some local spread appears to account for the pattern of variation observed.
14
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Cochlodina costata (C. Pfeiffer, 1828) (Gastropoda: pulmonata: Clausiliidae) in Poland

68%
Pokryszko B. M., Cameron R. A. D., Maltz T. K.
Folia Malacologica
|
2004
|
tom 12
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nr 4
An endangered species, Cochlodina costata (C. Pfeiffer), believed to be extinct in Poland, was found on Mt. Miłek (Kaczawskie Mts, SW. Poland).
15
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The genus Leiostyla (Gastropoda: Pulmonata) - relationships and distribution

68%
Pokryszko B. M., Falniowski A., Cameron R. A. D.
Folia Malacologica
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2012
|
tom 20
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nr 1
16
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Forest snail faunas from Georgia: diversity in a pleistocene refugium

68%
Cameron R. A. D., Pokryszko B. M., Mumladze L.
Folia Malacologica
|
2010
|
tom 18
|
nr 3
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