{"id":19003,"date":"2018-06-15T14:05:08","date_gmt":"2018-06-15T14:05:08","guid":{"rendered":"https:\/\/dev.denmarkfarm.org.uk\/arbrawf-bach-gyda-gwenynen-ddu\/"},"modified":"2018-06-15T14:05:08","modified_gmt":"2018-06-15T14:05:08","slug":"arbrawf-bach-gyda-gwenynen-ddu","status":"publish","type":"post","link":"https:\/\/www.denmarkfarm.org.uk\/cy\/arbrawf-bach-gyda-gwenynen-ddu\/","title":{"rendered":"Arbrawf bach gyda gwenynen ddu"},"content":{"rendered":"<p><strong>Post blog gwadd arbennig gan Richard Bambrey<\/strong><\/p>\n<p>Beth yw&#8217;r blwch yna?<\/p>\n<p>Nid math newydd doniol o flwch adar mohono! Mewn gwirionedd, blwch abwyd ar gyfer gwenyn m\u00eal ydyw sydd wedi&#8217;i osod yn Fferm Denmarc. <\/p>\n<p><img decoding=\"async\" class=\"alignleft wp-image-12227 size-large\" src=\"https:\/\/www.denmarkfarm.org.uk\/wp-content\/uploads\/2018\/06\/IMG_0080-e1529070639399-1024x821.jpg\" alt=\"blwch abwyd ar gyfer gwenyn du Prydeinig\" width=\"685\" height=\"549\" srcset=\"https:\/\/www.denmarkfarm.org.uk\/wp-content\/uploads\/2018\/06\/IMG_0080-e1529070639399-1024x821.jpg 1024w, https:\/\/www.denmarkfarm.org.uk\/wp-content\/uploads\/2018\/06\/IMG_0080-e1529070639399-1536x1231.jpg 1536w, https:\/\/www.denmarkfarm.org.uk\/wp-content\/uploads\/2018\/06\/IMG_0080-e1529070639399-2048x1641.jpg 2048w, https:\/\/www.denmarkfarm.org.uk\/wp-content\/uploads\/2018\/06\/IMG_0080-e1529070639399-800x641.jpg 800w, https:\/\/www.denmarkfarm.org.uk\/wp-content\/uploads\/2018\/06\/IMG_0080-e1529070639399-768x616.jpg 768w, https:\/\/www.denmarkfarm.org.uk\/wp-content\/uploads\/2018\/06\/IMG_0080-e1529070639399-300x240.jpg 300w, https:\/\/www.denmarkfarm.org.uk\/wp-content\/uploads\/2018\/06\/IMG_0080-e1529070639399-685x549.jpg 685w\" sizes=\"(max-width: 685px) 100vw, 685px\" \/><\/p>\n<p>Pam?<\/p>\n<p>Am flynyddoedd lawer tybiwyd bod y wenynen ddu Brydeinig (Apis mellifera mellifera neu AMM) wedi diflannu, wedi&#8217;i dileu gan <em>Glefyd Ynys Wyth<\/em> ddechrau&#8217;r 1900au. Pan ddywedaf dybio, rwy&#8217;n golygu honiadau gan &#8216;arbenigwyr&#8217;, ailadroddwyd gan arbenigwyr eraill a chredir gan weddill ohonom. Fodd bynnag, mae&#8217;n ymddangos bellach nad yw hyn yn wir o reidrwydd! <\/p>\n<p>Nododd Snelgrove, gwenynwr enwog o Brydain, a ysgrifennodd yn ystod ac ychydig ar \u00f4l yr Ail Ryfel Byd, fod y gwenyn yn tueddu i ddychwelyd i&#8217;r math brodorol unwaith y daeth mewnforio breninesau Eidalaidd i ben oherwydd y rhyfel. Mae hyn yn dangos bod yn rhaid bod y deunydd genetig wedi dod o rywle ac mai cytrefi gwenyn gwyllt\/gwyllt oedd hynny, felly roeddent yn dal o gwmpas bryd hynny. <\/p>\n<p>Dros y 150 mlynedd diwethaf neu fwy, mae llawer o wahanol fathau o wenyn m\u00eal wedi cael eu mewnforio i&#8217;r DU, gyda graddau amrywiol o lwyddiant. Fodd bynnag, mae&#8217;r agwedd bellach wedi troi o chwilio mewn mannau eraill yn y byd am wenynen well i&#8217;r farn fwy rhesymegol mai&#8217;r wenynen a oedd wedi byw yn y DU am filoedd o flynyddoedd (ers diwedd yr oes i\u00e2 ddiwethaf, mae&#8217;n debyg) fyddai&#8217;r wenynen orau ar gyfer ein hinsawdd&#8230; Wel, dyna syndod!  <\/p>\n<p>Ble?<\/p>\n<p>Ie wir! Ble maen nhw felly? Mae&#8217;n debyg, os oes unrhyw gytrefi AMM wedi goroesi pla Varoa yn ystod y degawd diwethaf neu fwy, eu bod nhw&#8217;n dal i fyw fel yr oedden nhw erioed. Mewn coed gwag, mewn toeau hen. Yn tueddu i wladychu ceudodau bach, yn heidio&#8217;n rheolaidd ac yn paru&#8217;n lleol*. Ac felly&#8217;r blwch!     <\/p>\n<p>Mewn ymgais i ddarganfod drosof fy hun a oes unrhyw wenyn AMM allan yna o hyd, rwyf wedi adeiladu nifer o&#8217;r blychau hyn neu &#8216;gychod gwenyn abwyd&#8217;. Mae dimensiynau a lleoliad y cychod gwenyn hyn yn seiliedig yn bennaf ar waith a wnaed gan yr Athro Tom Seely ac a eglurir yn ei lyfr rhagorol \u201cThe Honeybee Democracy\u201d. <\/p>\n<p>Rydw i wedi bod mewn cysylltiad yn ddiweddar \u00e2 myfyriwr PhD ym Mhrifysgol Bangor sy&#8217;n astudio&#8217;r pwnc hwn yn unig, felly os byddaf yn dal unrhyw heidiau o fath brodorol byddant yn cael eu samplu ac yn dod yn rhan o astudiaeth fwy. Cyffrous iawn i gyd! <\/p>\n<p>*Os hoffech chi gael rhagor o wybodaeth am wenyn AMM, edrychwch ar <a href=\"https:\/\/bibba.com\/native-honey-bees\/\" target=\"_blank\" rel=\"noopener\">https:\/\/bibba.com\/native-honey-bees\/<\/a><\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-medium wp-image-12228\" src=\"https:\/\/www.denmarkfarm.org.uk\/wp-content\/uploads\/2018\/06\/IMG_0077-200x300.jpg\" alt=\"\" width=\"200\" height=\"300\" srcset=\"https:\/\/www.denmarkfarm.org.uk\/wp-content\/uploads\/2018\/06\/IMG_0077-200x300.jpg 200w, https:\/\/www.denmarkfarm.org.uk\/wp-content\/uploads\/2018\/06\/IMG_0077-1024x1536.jpg 1024w, https:\/\/www.denmarkfarm.org.uk\/wp-content\/uploads\/2018\/06\/IMG_0077-1365x2048.jpg 1365w, https:\/\/www.denmarkfarm.org.uk\/wp-content\/uploads\/2018\/06\/IMG_0077-800x1200.jpg 800w, https:\/\/www.denmarkfarm.org.uk\/wp-content\/uploads\/2018\/06\/IMG_0077-768x1152.jpg 768w, https:\/\/www.denmarkfarm.org.uk\/wp-content\/uploads\/2018\/06\/IMG_0077-300x450.jpg 300w, https:\/\/www.denmarkfarm.org.uk\/wp-content\/uploads\/2018\/06\/IMG_0077-683x1024.jpg 683w, https:\/\/www.denmarkfarm.org.uk\/wp-content\/uploads\/2018\/06\/IMG_0077-685x1028.jpg 685w, https:\/\/www.denmarkfarm.org.uk\/wp-content\/uploads\/2018\/06\/IMG_0077-scaled.jpg 1707w\" sizes=\"(max-width: 200px) 100vw, 200px\" \/><\/p>\n<p style=\"text-align: center;\"><strong><em>Richard Bambrey a&#8217;i ferch Rhian Bambrey, yn gosod y blwch gwenyn yn Fferm Denmark.<\/em><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Post blog gwadd arbennig gan Richard Bambrey Beth yw&#8217;r blwch yna? Nid math newydd doniol o flwch adar mohono! Mewn gwirionedd, blwch abwyd ar<\/p>\n","protected":false},"author":2,"featured_media":19007,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1205,1204],"tags":[1378,1217,1211,1215,1376,1377,1374,1375],"class_list":["post-19003","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bioamrywiaeth","category-bywyd-gwyllt","tag-blwch-abwyd-gwenyn","tag-bywyd-gwyllt","tag-canolfan-cadwraeth-fferm-denmarc","tag-fferm-denmarc","tag-gwenyn","tag-gwenyn-du-prydeinig","tag-gwenyn-gwyllt","tag-gwenyn-mel"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Arbrawf bach gyda gwenynen ddu - Canolfan Gadwraeth Fferm Denmarc<\/title>\n<meta name=\"description\" content=\"Post gwadd gan Richard Bambrey. Beth Yw&#039;r Blwch Hwnnw? Nid math newydd o flwch adar mohono! Mewn gwirionedd, mae&#039;n flwch abwyd ar gyfer gwenyn m\u00eal sydd wedi&#039;i osod yn Fferm Denmarc. Am flynyddoedd lawer tybiwyd bod y wenynen ddu Brydeinig (Apis mellifera mellifera neu AMM) wedi diflannu. Fodd bynnag, mae&#039;n ymddangos nawr nad yw hyn yn wir o bosibl!\" \/>\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.denmarkfarm.org.uk\/cy\/arbrawf-bach-gyda-gwenynen-ddu\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Arbrawf bach gyda gwenynen ddu - Canolfan Gadwraeth Fferm Denmarc\" \/>\n<meta property=\"og:description\" content=\"Post gwadd gan Richard Bambrey. Beth Yw&#039;r Blwch Hwnnw? Nid math newydd o flwch adar mohono! 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Beth Yw'r Blwch Hwnnw? Nid math newydd o flwch adar mohono! Mewn gwirionedd, mae'n flwch abwyd ar gyfer gwenyn m\u00eal sydd wedi'i osod yn Fferm Denmarc. Am flynyddoedd lawer tybiwyd bod y wenynen ddu Brydeinig (Apis mellifera mellifera neu AMM) wedi diflannu. 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