\u9ca8\u9c7c\u6709\u816e\u5417\uff1f
\u6709\u9cc3\u88c2\u3002
\u4f46\u4e0d\u80fd\u50cf\u5176\u4ed6\u786c\u9aa8\u9c7c\u7684\u9cc3\u76d6\u90a3\u6837\u80fd\u76f4\u63a5\u6eb6\u89e3\u6c34\u4e2d\u7684\u6c27\u6c14\u518d\u5438\u6536\u5230\u8840\u6db2\u4e2d\u3002\u5927\u591a\u6570\u7684\u9ca8\u9c7c\u90fd\u5fc5\u987b\u4e0d\u65ad\u7684\u6e38\u52a8\uff0c\u8ba9\u6d77\u6c34\u4ece\u9cc3\u88c2\u5916\u6d41\u8fdb\u53bb\u3002\u9ca8\u9c7c\u6bcf\u4fa7\u67095~7\u4e2a\u9cc3\u88c2\uff0c\u5728\u6e38\u52a8\u65f6\u6d77\u6c34\u901a\u8fc7\u534a\u5f00\u7684\u53e3\u5438\u5165\uff0c\u4ece\u9cc3\u88c2\u6d41\u51fa\u8fdb\u884c\u6c14\u4f53\u4ea4\u6362\u3002
\u9ca8\u9c7c\u4e0e\u9b5f\u3001\u9cd0\u5171\u540c\u7ec4\u6210\u8f6f\u9aa8\u9c7c\u7eb2\u7684\u677f\u9cc3\u4e9a\u7eb2(Elasmobranchii)\u3002\u9ca8\u9c7c\u4e0e\u5176\u4ed6\u677f\u9cc3\u9c7c\u7c7b\u4e0d\u540c\uff0c\u8eab\u4f53\u5448\u7eba\u9524\u72b6\uff0c\u5934\u4e24\u4fa7\u6709\u816e\u88c2\uff0c\u4f46\u7c7b\u4f3c\u666e\u901a\u9c7c\u3002\u9664\u4e2a\u522b\u4f8b\u5916\uff0c\u5178\u578b\u7684\u9ca8\u9c7c\u76ae\u80a4\u575a\u786c\uff0c\u5448\u6697\u7070\u8272\uff0c\u7259\u9f7f\u72b6\u9cde\u7247\u4f7f\u76ae\u80a4\u663e\u5f97\u7c97\u7cd9\u3002
\u5c3e\u90e8\u5f3a\u58ee\u6709\u529b\uff0c\u4e0d\u5bf9\u79f0\u3001\u4e0a\u7fd8\uff1b\u9ccd\u5448\u5c16\u72b6\uff1b\u543b\u5c16\uff0c\u524d\u7a81\uff0c\u543b\u4e0b\u6709\u65b0\u6708\u5f62\u5634\u53ca\u4e09\u89d2\u5f62\u5c16\u7259\u3002\u9ca8\u9c7c\u65e0\u9cd4\uff0c\u9700\u4e0d\u505c\u5730\u6e38\u6cf3\u4ee5\u514d\u6c89\u5230\u6c34\u5e95\u3002
\u6269\u5c55\u8d44\u6599\uff1a
1\u3001\u9ca8\u9c7c\u7684\u8eab\u4f53\u7ed3\u6784
\u9ca8\u9c7c\u548c\u5176\u5b83\u9c7c\u7c7b\u4e0d\u4e00\u6837\uff0c\u5b83\u4eec\u7684\u9aa8\u67b6\u662f\u8f6f\u9aa8\u7ec4\u6210\u7684\u800c\u975e\u9aa8\u5934\u3002\u5728\u9aa8\u67b6\u7684\u67d0\u4e9b\u5730\u65b9\u6709\u7279\u522b\u7684\u9cde\u7532\u52a0\u4ee5\u5f3a\u56fa\uff0c\u8fd9\u79cd\u9cde\u7532\u79f0\u4e4b\u4e3a\u300c\u7279\u745f\u78ca\u300d\uff08tesserae\uff09\uff0c\u7531\u786c\u9499\u76d0 (hard calcium salts) \u6784\u6210\u3002
\u9ca8\u9c7c\u7684\u7259\u9f7f\u90fd\u662f\u5b9a\u671f\u751f\u957f\u53ca\u6c70\u6362\u3002\u6709\u4e9b\u9ca8\u9c7c\u6bcf\u5e74\u53ef\u751f\u957f\u6570\u5343\u9897\u7259\u9f7f\uff0c\u8001\u65e7\u7684\u7259\u9f7f\u4f1a\u8131\u843d\uff0c\u5e76\u7531\u4f4d\u4e8e\u540e\u6392\u7684\u65b0\u7259\u53d6\u800c\u4ee3\u4e4b\u3002
2\u3001\u9ca8\u9c7c\u7684\u79cd\u7c7b\u4e60\u6027
\u5404\u79cd\u9ca8\u5728\u989c\u8272\u4e0a\u96be\u4ee5\u5f52\u7c7b\uff0c\u4ece\u7070\u8272\u81f3\u5976\u6cb9\u8272\u3001\u8910\u3001\u9ec4\u3001\u7070\u84dd\u6216\u84dd\u8272\uff0c\u5e38\u6709\u6591\u70b9\u3001\u6761\u7eb9\u3001\u5927\u7406\u77f3\u7eb9\u6216\u7a81\u8d77\u3002\u5176\u4fd7\u540d\u5e38\u8868\u660e\u73b0\u5b58\u7269\u79cd\u7684\u989c\u8272\uff0c\u5982\u84dd\u9ca8\uff08\u5927\u9752\u9ca8\u5c5e\u3014Prionace\u3015\uff09\u3001\u767d\u9ca8\uff08\u566c\u4eba\u9ca8\u5c5e\u3014Carcharodon\u3015\uff09\u548c\u67e0\u6aac\u9ca8\uff08\u67e0\u6aac\u9ca8\u5c5e\u3014Negaprion\u3015\uff09\u3002
\u53c2\u8003\u8d44\u6599\u6765\u6e90\uff1a\u767e\u5ea6\u767e\u79d1-\u9ca8
\u666e\u901a\u7684\u9c7c\u7c7b\u53ef\u4ee5\u5728\u6c34\u4e2d\u4e0a\u4e0b\u6e38\u52a8\uff0c\u6765\u53bb\u81ea\u5982\uff0c\u662f\u56e0\u4e3a\u5b83\u4eec\u8eab\u4e0a\u6709\u4e00\u79cd\u7279\u6b8a\u7684\u201c\u6f5c\u6c34\u5668\u201d\u2014\u2014\u9c7c\u9cd4\u3002\u53ef\u662f\u9ca8\u9c7c\u5374\u6ca1\u6709\u8fdb\u5316\u51fa\u8fd9\u6837\u5148\u8fdb\u7684\u88c5\u5907\uff0c\u6240\u4ee5\u5b83\u4eec\u65e0\u6cd5\u50cf\u666e\u901a\u9c7c\u7c7b\u90a3\u6837\u5728\u6c34\u4e2d\u4e0a\u6d6e\u4e0b\u6f5c\uff0c\u800c\u5fc5\u987b\u4e0d\u505c\u6e38\u52a8\uff0c\u5e76\u4e14\u4ee5\u6b64\u63a7\u5236\u6c34\u4e2d\u7684\u8eab\u4f53\u3002
\u9ca8\u9c7c\u5728\u6e38\u52a8\u65f6\uff0c\u4e3b\u8981\u4f9d\u9760\u8eab\u4f53\u548c\u5c3e\u9ccd\u7684\u6446\u52a8\u524d\u8fdb\uff0c\u6240\u4ee5\u5927\u591a\u6570\u9ca8\u9c7c\u90fd\u53ea\u80fd\u524d\u8fdb\uff0c\u4e0d\u80fd\u540e\u9000\uff0c\u56e0\u6b64\u4e5f\u5f88\u5bb9\u6613\u88ab\u4eba\u7c7b\u7684\u523a\u7f51\u6240\u6355\u83b7\u3002\u7531\u4e8e\u9ca8\u9c7c\u6ca1\u6709\u9c7c\u9cd4\uff0c\u6240\u4ee5\u5b83\u4eec\u7684\u6bd4\u91cd\u4e3b\u8981\u7531\u809d\u810f\u50a8\u5b58\u7684\u6cb9\u8102\u91cf\u6765\u51b3\u5b9a\u7684\u3002\u9ca8\u9c7c\u7684\u5bc6\u5ea6\u53c8\u6bd4\u6c34\u5927\uff0c\u5982\u679c\u5b83\u4eec\u6ca1\u6709\u4e00\u76f4\u6e38\u52a8\uff0c\u5c31\u4f1a\u6c89\u5165\u6d77\u5e95\u3002
\u6269\u5c55\u8d44\u6599\uff1a
\u5f88\u591a\u9ca8\u9c7c\u53e3\u4e2d\u90fd\u6709\u6210\u6392\u7684\u5229\u9f7f\uff0c\u800c\u4e14\u4e0d\u540c\u7684\u9ca8\u9c7c\uff0c\u7259\u9f7f\u7684\u5f62\u72b6\u548c\u5927\u5c0f\u4e5f\u4e0d\u4e00\u6837\uff0c\u6709\u7684\u5448\u950b\u5229\u7684\u952f\u9f7f\u72b6\uff0c\u6709\u7684\u5448\u6241\u5e73\u7684\u4e09\u89d2\u5f62\u72b6\u3002\u65e0\u8bba\u9ca8\u9c7c\u7684\u7259\u9f7f\u5f62\u72b6\u5982\u4f55\uff0c\u53ea\u8981\u524d\u6392\u7684\u7259\u9f7f\u6389\u843d\uff0c\u540e\u6392\u7684\u7259\u9f7f\u4fbf\u4f1a\u8865\u4e0a\uff0c\u800c\u4e14\u50cf\u89d2\u9ca8\u548c\u68d8\u89d2\u9ca8\u8fd9\u6837\u7684\u9ca8\u9c7c\uff0c\u8fd8\u4f1a\u6574\u6392\u6574\u6392\u5730\u66f4\u6362\u7259\u9f7f\u3002\u4f5c\u4e3a\u6d77\u6d0b\u4e2d\u6700\u51f6\u6b8b\u7684\u52a8\u7269\uff0c\u9ca8\u9c7c\u4e00\u751f\u9700\u8981\u66f4\u6362\u6210\u5343\u4e0a\u4e07\u9897\u7259\u9f7f\u3002
\u9ca8\u9c7c\u4e0d\u50cf\u5176\u4ed6\u52a8\u7269\uff0c\u62e5\u6709\u56fa\u5b9a\u4e00\u6392\u7684\u7259\u9f7f\uff0c\u800c\u662f\u5728\u4e00\u6392\u7259\u9f7f\u540e\u9762\uff0c\u8fd8\u6392\u5217\u7740\u56db\u4e94\u5217\u201c\u5907\u7528\u7259\u9f7f\u201d\u3002\u6700\u5916\u9762\u4e00\u6392\u7259\u9f7f\u662f\u76f4\u7acb\u7684\uff0c\u53d1\u80b2\u4e5f\u6700\u597d\uff0c\u5982\u679c\u5728\u51b2\u950b\u9677\u9635\u65f6\u53d7\u635f\u8131\u843d\uff0c\u540e\u6392\u7684\u7259\u9f7f\u4f1a\u9a6c\u4e0a\u5411\u524d\u79fb\u52a8\uff0c\u8fdb\u5165\u8131\u843d\u7259\u9f7f\u7684\u7259\u5e8a\uff0c\u5e76\u4e14\u7acb\u523b\u76f4\u7acb\u8d77\u6765\u3002
\u53c2\u8003\u8d44\u6599\u6765\u6e90\uff1a\u79d1\u666e\u4e2d\u56fd\u2014\u2014\u201c\u6d77\u4e2d\u72fc\u201d\u9ca8\u9c7c\u5374\u957f\u4e86\u4e00\u526f\u201c\u8f6f\u9aa8\u5934\u201d