{"id":2779,"date":"2020-03-03T09:06:32","date_gmt":"2020-03-03T08:06:32","guid":{"rendered":"https:\/\/ibb.uab.cat\/?p=2779"},"modified":"2020-03-03T09:09:54","modified_gmt":"2020-03-03T08:09:54","slug":"dra-aurora-ruiz-herrera-chromosomal-differentiation-in-genetically-isolated-populations-of-the-marsh-specialist-crocidura-suaveolens-mammalia-soricidae","status":"publish","type":"post","link":"https:\/\/ibb.uab.cat\/index.php\/2020\/03\/03\/dra-aurora-ruiz-herrera-chromosomal-differentiation-in-genetically-isolated-populations-of-the-marsh-specialist-crocidura-suaveolens-mammalia-soricidae\/","title":{"rendered":"Dra. Aurora Ruiz-Herrera: “Chromosomal Differentiation in Genetically Isolated Populations of the Marsh-Specialist Crocidura suaveolens (Mammalia: Soricidae)”"},"content":{"rendered":"
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\"\"<\/a>\"\"Abstract<\/h2>\n<\/div>\n
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The genus\u00a0Crocidura<\/span>\u00a0represents a remarkable model for the study of chromosome evolution. This is the case of the lesser white-toothed shrew (Crocidura suaveolens<\/span>), a representative of the Palearctic group. Although continuously distributed from Siberia to Central Europe,\u00a0C. suaveolens<\/span>\u00a0is a rare, habitat-specialist species in the southwesternmost limit of its distributional range, in the Gulf of C\u00e1diz (Iberian Peninsula). In this area,\u00a0C. suaveolens<\/span>\u00a0is restricted to genetically isolated populations associated to the tidal marches of five rivers (Guadiana, Piedras, Odiel, Tinto and Guadalquivir). This particular distributional range provides a unique opportunity to investigate whether genetic differentiation and habitat specialization was accompanied by chromosomal variation. In this context, the main objective of this study was to determinate the chromosomal characteristics of the habitat-specialist\u00a0C. suaveolens<\/span>\u00a0in Southwestern Iberia, as a way to understand the evolutionary history of this species in the Iberian Peninsula. A total of 41 individuals from six different populations across the Gulf of C\u00e1diz were collected and cytogenetically characterized. We detected four different karyotypes, with diploid numbers (2n) ranging from 2n = 40 to 2n = 43. Two of them (2n = 41 and 2n = 43) were characterized by the presence of B-chromosomes. The analysis of karyotype distribution across lineages and populations revealed an association between mtDNA population divergence and chromosomal differentiation.\u00a0C. suaveolens\u00a0<\/span>populations in the Gulf of C\u00e1diz provide a rare example of true karyotypic polymorphism potentially associated to genetic isolation and habitat specialization in which to investigate the evolutionary significance of chromosomal variation in mammals and their contribution to phenotypic and ecological divergence.<\/div>\n
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Genes<\/em> 2020<\/strong>, 11<\/em>(3), 270; https:\/\/doi.org\/10.3390\/genes11030270<\/a> (registering\u00a0DOI)<\/p>\n

https:\/\/www.mdpi.com\/2073-4425\/11\/3\/270<\/a><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Abstract The genus\u00a0Crocidura\u00a0represents a remarkable model for the study of chromosome evolution. This is the case of the lesser white-toothed shrew (Crocidura suaveolens), a representative of the Palearctic group. Although continuously distributed from Siberia to Central Europe,\u00a0C. suaveolens\u00a0is a rare, habitat-specialist species in the southwesternmost limit of its distributional range, in the Gulf of C\u00e1diz […]<\/p>\n","protected":false},"author":65,"featured_media":2784,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[4],"tags":[],"_links":{"self":[{"href":"https:\/\/ibb.uab.cat\/index.php\/wp-json\/wp\/v2\/posts\/2779"}],"collection":[{"href":"https:\/\/ibb.uab.cat\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ibb.uab.cat\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ibb.uab.cat\/index.php\/wp-json\/wp\/v2\/users\/65"}],"replies":[{"embeddable":true,"href":"https:\/\/ibb.uab.cat\/index.php\/wp-json\/wp\/v2\/comments?post=2779"}],"version-history":[{"count":2,"href":"https:\/\/ibb.uab.cat\/index.php\/wp-json\/wp\/v2\/posts\/2779\/revisions"}],"predecessor-version":[{"id":2783,"href":"https:\/\/ibb.uab.cat\/index.php\/wp-json\/wp\/v2\/posts\/2779\/revisions\/2783"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ibb.uab.cat\/index.php\/wp-json\/wp\/v2\/media\/2784"}],"wp:attachment":[{"href":"https:\/\/ibb.uab.cat\/index.php\/wp-json\/wp\/v2\/media?parent=2779"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ibb.uab.cat\/index.php\/wp-json\/wp\/v2\/categories?post=2779"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ibb.uab.cat\/index.php\/wp-json\/wp\/v2\/tags?post=2779"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}