{"id":7860,"date":"2022-03-30T14:02:45","date_gmt":"2022-03-30T12:02:45","guid":{"rendered":"https:\/\/ssef.ch\/?p=7860"},"modified":"2022-11-02T15:17:44","modified_gmt":"2022-11-02T14:17:44","slug":"new-pearl-oyster-species-pinctada-persica","status":"publish","type":"post","link":"https:\/\/www.ssef.ch\/de\/new-pearl-oyster-species-pinctada-persica\/","title":{"rendered":"New pearl oyster species: pinctada persica"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">by Dr. L.E. Cartier &amp; Dr. M.S. Krzemnicki &amp; Dr. B. Lendvay, first published in&nbsp;<a href=\"https:\/\/ssef.ch\/wp-content\/uploads\/2021\/06\/facette-2021-web.pdf\">Facette 27<\/a>&nbsp;(June 2021)<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"694\" src=\"https:\/\/ssef.ch\/wp-content\/uploads\/2022\/03\/303-figure-1.jpg\" alt=\"\" class=\"wp-image-8012\" srcset=\"https:\/\/www.ssef.ch\/wp-content\/uploads\/2022\/03\/303-figure-1.jpg 1024w, https:\/\/www.ssef.ch\/wp-content\/uploads\/2022\/03\/303-figure-1-300x203.webp 300w, https:\/\/www.ssef.ch\/wp-content\/uploads\/2022\/03\/303-figure-1-768x521.webp 768w, https:\/\/www.ssef.ch\/wp-content\/uploads\/2022\/03\/303-figure-1-700x474.jpg 700w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">We recently tested a pearl jewellery set that consisted of 63 natural pearls, with 61 of them being strung on a thread and two additional loose natural pearls. Part of these pearls were of very remarkable size, reaching a maximum weight of 32 ct. The pearls exhibited an attractive colour, subtly ranging from slightly cream to cream.<br>We assume that these pearls are rather historic in age, which was confirmed by radiocarbon dating on three randomly selected pearls. The analysed trace elements revealed that a large majority of these pearls were saltwater natural pearls, except for three pearls which were freshwater natural pearls. This is not rare in historic natural pearl jewellery, as pearls were often collected and mixed together unknowingly.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The same pearls were further analysed using DNA fingerprinting and led to interesting findings. One of the pearls was conclusively identified as being from the <em>Pinctada radiata<\/em> species (Persian Gulf &amp; Ceylon pearl oyster), a species that can produce pearls commonly called \u2018Basra pearls\u2019 in the trade. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Interestingly, the other two sampled pearls were attributed to another species: <em>Pinctada persica<\/em> or <em>Pinctada margaritifera persica<\/em>, which is a rare member of the Pinctada margaritifera species complex. To our knowledge, this is the first time that pearls from Pinctada persica have been reported. To date this species has only been found exclusively in the Persian Gulf (Ranjbar et al. 2016).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This case study shows the potential that DNA fingerprinting has to uncover previously unreported species of both pearls (and precious corals) used in jewellery and also to document species and geographic origins for pearls. In continuing this research, we are convinced that we will discover many new secrets about pearls in future. <\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Want to learn more about pearls?<\/h2>\n\n\n\n<div class=\"wp-block-media-text alignwide\"><figure class=\"wp-block-media-text__media\"><img decoding=\"async\" src=\"https:\/\/ssef.ch\/wp-content\/uploads\/2021\/11\/415_Fig1b_Queen-Mary-Pearl.jpg\" alt=\"\" class=\"wp-image-7469\"\/><\/figure><div class=\"wp-block-media-text__content\">\n<p class=\"wp-block-paragraph\">Sign up for our free online course: <a href=\"https:\/\/ssef.ch\/courses\/pearl-en\/\">Introduction to pearls<\/a><\/p>\n\n\n\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-background has-vivid-red-background-color\" href=\"https:\/\/ssef.ch\/courses\/pearl-en\/\">Sign up for free<\/a><\/div>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>We recently tested a pearl jewellery set that consisted of 63 natural pearls, with 61 of them being strung on a thread and two additional loose natural pearls. To our knowledge, this is the first time that pearls from Pinctada persica have been reported.<\/p>\n","protected":false},"author":9,"featured_media":8012,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[626],"tags":[738,724],"library_category":[],"library_author":[],"class_list":["post-7860","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-research-blog","tag-dna","tag-pearl"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>New pearl oyster species: pinctada persica - SSEF<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.ssef.ch\/fr\/new-pearl-oyster-species-pinctada-persica\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"New pearl oyster species: pinctada persica - SSEF\" \/>\n<meta property=\"og:description\" content=\"We recently tested a pearl jewellery set that consisted of 63 natural pearls, with 61 of them being strung on a thread and two additional loose natural pearls. 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