The composition of the exoskeleton of two crustacea:: The American lobster Homarus americanus and the edible crab Cancer pagurus
The composition of the exoskeleton of two crustacea:: The American lobster Homarus americanus and the edible crab Cancer pagurus
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DOI：
10.1016/j.tca.2007.07.018
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发表时间：
2007-10-25
影响因子：
3.5
通讯作者：
Epple, M.
中科院分区：
文献类型：
--
作者：
Bobelmann, F.;Romano, P.;Epple, M.
用结构和化学方法对美洲龙虾Homarusamericanus和蟹Cancerpagurus的外骨骼进行了分析。外骨骼由纳米晶体形式的结晶镁方解石（域尺寸约20 nm）、无定形磷酸钙（ACP）和α-几丁质组成。骨骼的不同部分以及两个物种之间的组成有所不同。差异与动物的机械要求和生物逃避行为有关。手指和爪子被强烈矿化，非常坚硬。身体的外壳（甲壳）矿化较少，更具弹性。龙虾，作为一种移动的，快速游泳的动物，通常能从捕食者手中逃脱，而螃蟹则紧贴地面，钻到沙子里。因此，龙虾的壳比螃蟹的壳矿化程度低（因此更轻，更硬）。(C)2007 Elsevier B. V.保留所有权利。
The exoskeletons of the American lobster Homarus americanus and of the edible crab Cancer pagurus were analysed with structural and chemical methods. The exoskeletons consist of crystalline magnesian calcite in the form of nanocrystals (domain size about 20 nm), amorphous calcium phosphate (ACP), and alpha-chitin. The composition varies among different parts of the skeleton and also between the two species. Differences are related to the mechanical requirements and biological escape behaviour of the animals. The finger and claw are strongly mineralized and very hard. The shell of the body (the carapace) is less mineralized and more elastic. The lobster, as a mobile, fast-swimming animal, typically escapes from a predator whereas the crab clings to the ground and burrows into the sand. Consequently, the shell of the lobster is less mineralized (and therefore lighter and less hard) than the shell of the crab. (C) 2007 Elsevier B.V. All rights reserved.