Ostnovky jsou mo\u0159\u0161t\u00ed ml\u017ei rodu Spondylus, jedin\u00e9ho rodu \u010deledi Spondylidae. Jejich lastury b\u00fdvaj\u00ed pokryt\u00e9 trny a zbarven\u00e9 do \u010dervena, oran\u017eova, fialova \u010di b\u00edla, a proto pat\u0159\u00ed k vyhled\u00e1van\u00fdm sb\u011bratelsk\u00fdm mu\u0161l\u00edm. \u017dij\u00ed v tropick\u00fdch a subtropick\u00fdch mo\u0159\u00edch, obvykle nedaleko pob\u0159e\u017e\u00ed. Anglicky se jim \u0159\u00edk\u00e1 \u201espiny oysters\u201c, tedy trnit\u00e9 \u00fast\u0159ice, s prav\u00fdmi \u00fast\u0159icemi v\u0161ak nejsou bl\u00edzce p\u0159\u00edbuzn\u00e9.<\/p>\r\n
Dosp\u011bl\u00e1 ostnovka p\u0159ir\u016fst\u00e1 pravou lasturou natrvalo k pevn\u00e9mu podkladu, nap\u0159\u00edklad ke skal\u00e1m nebo kor\u00e1l\u016fm. Jej\u00ed lastury nespojuje z\u00e1mek se zoubky jako u v\u011bt\u0161iny ml\u017e\u016f, ale kloubov\u00e9 spojen\u00ed typu hlavice a jamka. Podobn\u011b jako h\u0159ebenatky m\u00e1 na okraji pl\u00e1\u0161t\u011b \u0159adu drobn\u00fdch o\u010d\u00ed. P\u0159\u00edbuznost s h\u0159ebenatkami p\u0159ipom\u00ednaj\u00ed i zakrn\u011bl\u00e1 ou\u0161ka \u2013 troj\u00faheln\u00edkov\u00e9 v\u00fdb\u011b\u017eky po stran\u00e1ch z\u00e1mku.<\/p>\r\n
Ostnovky maj\u00ed pozoruhodnou kulturn\u00ed historii. Ji\u017e v neolitick\u00e9 Evrop\u011b, zhruba mezi lety 5350 a 4200 p\u0159ed na\u0161\u00edm letopo\u010dtem, se z jejich lastur vyr\u00e1b\u011bly n\u00e1ramky a dal\u0161\u00ed ozdoby, se kter\u00fdmi se obchodovalo na velk\u00e9 vzd\u00e1lenosti. V p\u0159edkolumbovsk\u00e9 Ji\u017en\u00ed Americe, zejm\u00e9na na \u00fazem\u00ed dne\u0161n\u00edho Peru a Ekv\u00e1doru, slou\u017eily lastury ostnovek jako ob\u011btiny i platidlo. Obchodn\u00ed s\u00ed\u0165, po n\u00ed\u017e se v Americe \u0161\u00ed\u0159ily, sahala od Mexika a\u017e do centr\u00e1ln\u00edch And.<\/p>\r\n
V t\u00e9to kategorii najdete \u010dty\u0159i druhy ostnovek: Spondylus imperialis<\/a>, Spondylus sinensis<\/a>, Spondylus echinatus<\/a> a Spondylus varius<\/a>. Jednotliv\u00e9 druhy se li\u0161\u00ed tvarem, hustotou a d\u00e9lkou trn\u016f i zbarven\u00edm, kter\u00e9 se m\u016f\u017ee li\u0161it i u jednoho druhu, tak\u017ee i mal\u00e1 kolekce p\u016fsob\u00ed pest\u0159e.<\/p>\r\n Dlouh\u00e9 trny se snadno ulom\u00ed, proto lastury vystavujte ve vitr\u00edn\u011b nebo na polici, kde nehroz\u00ed jejich po\u0161kozen\u00ed. Dal\u0161\u00ed ml\u017ee i mo\u0159sk\u00e9 pl\u017ee najdete v nad\u0159azen\u00e9 kategorii Lastury<\/a>.<\/p>","link":"https:\/\/www.shellsupply.eu\/en\/product-category\/lastury\/spondylidae\/","name":"Spondylidae","slug":"spondylidae","taxonomy":"product_cat","parent":151,"meta":[],"menu_order":0,"_links":{"self":[{"href":"https:\/\/www.shellsupply.eu\/en\/wp-json\/wp\/v2\/product_cat\/138","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.shellsupply.eu\/en\/wp-json\/wp\/v2\/product_cat"}],"about":[{"href":"https:\/\/www.shellsupply.eu\/en\/wp-json\/wp\/v2\/taxonomies\/product_cat"}],"up":[{"embeddable":true,"href":"https:\/\/www.shellsupply.eu\/en\/wp-json\/wp\/v2\/product_cat\/151"}],"wp:post_type":[{"href":"https:\/\/www.shellsupply.eu\/en\/wp-json\/wp\/v2\/product?product_cat=138"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}