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8 results for “Cepaea nemoralis”
Photographs of parasites encapsulated in Cepaea nemoralis shells (appendix to the paper "Morph-dependent effect of nematode infection on host movement in the land snail *Cepaea nemoralis* (Mollusca, Gastropoda)")
<p>A set of four photographs taken of shell fragments of Cepaea nemoralis (grove snail), taken in the course of the project leading to the manuscript titled: "Morph-dependent effect of nematode infection on host movement in the land snail *Cepaea nemoralis* (Mollusca, Gastropoda)". Each photograph shows a parasite encapsulated/trapped in the shell by the snail:</p> <p>AcaRX3_3.tif: a mite (presumably Riccardoella sp.)<br> NemaBX7_1.tif, NemaBX7_3.tif, NemaRK5_2.tif: unidentified nematodes (note in the latter image, the clearly visible brown-band on yellow background pattern of the shell).</p> <p>A scale bar (0.25 mm) is overlaid on each image</p> <p> </p>
Deep structure, long-distance migration and admixture in the colour polymorphic land snail Cepaea nemoralis
<p>While snails of the genus <em>Cepaea</em> have historically been important in studying colour polymorphism<em> </em>an ongoing issue is that there is a lack of knowledge of the underlying genetics of the polymorphism, as well as an absence of genomic data to put findings in context. We therefore used phylogenomic methods to begin to investigate the post-glacial history of <em>Cepaea nemoralis</em>, with a long-term aim to understand the roles that selection and drift have in determining both European-wide and local patterns of colour polymorphism. By combining prior and new mitochondrial DNA data from over 1500 individuals with ddRAD genomic data from representative individuals across Europe, we show that patterns of differentiation are primarily due to multiple deeply diverged populations of snails. Minimally, there is a widespread Central European population and additional diverged groups in Northern Spain, the Pyrenees, as well as likely Italy and South Eastern Europe. The genomic analysis showed that the present-day snails in Ireland and possibly some other locations are likely descendants of admixture between snails from the Pyrenees and the Central European group, an observation that is consistent with prior inferences from mtDNA alone. The interpretation is that <em>C. nemoralis</em> may have arrived in Ireland via long-distance migration from the Pyrenean region, subsequently admixing with arrivals from elsewhere. This work therefore provides a baseline expectation for future studies on the genetics of the colour polymorphism, as well as providing a comparator for similar species.</p>
Deep structure, long-distance migration and admixture in the colour polymorphic land snail Cepaea nemoralis
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Data from: Continuous variation in the shell colour of the snail <em>Cepaea nemoralis</em> is associated with the colour locus of the supergene
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Data from: Change and stability in a steep morph-frequency cline in the snail Cepaea nemoralis (L.) over 43 years.
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Challenging the concept that eumelanin is the polymorphic brown banded pigment in Cepaea nemoralis
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Data from: RAD-Seq derived markers flank the shell colour and banding loci of the Cepaea nemoralis supergene
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Hainschnirkelschnecke (Cepaea nemoralis)
<u>Source</u>: Flickr <br><u>4DCity URL</u>: <a href="https://4dcity.org/imgupload/1653149656.7013.jpg">https://4dcity.org/imgupload/1653149656.7013.jpg</a> <br><u>Original Image URL</u>: <a href="https://live.staticflickr.com/65535/52068803644_34956f467f_m.jpg">https://live.staticflickr.com/65535/52068803644_34956f467f_m.jpg</a> <br><br><u>Image-Metadata:</u><br>Filename: 1653149656.7013.jpg<br>Image Dimensions: 240x214<br>Megapixels: 0.05 MP<br>Filesize: 25.44 KB<br><br>ExifOffset: 38
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