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首页> 外文期刊>水産增殖 >Formation of scale ridges in the goldfish Carassius auratus exposed to calcium- and phosphorus-deficient conditions
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Formation of scale ridges in the goldfish Carassius auratus exposed to calcium- and phosphorus-deficient conditions

机译：在金鱼Carassius Auratus中形成尺度脊，暴露于钙和磷缺乏条件

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摘要

The role of calcification in the formation of ridges on the scales of goldfish was investigated. Goldfish were held in distilled water and fed a test diet deficient in calcium (Ca) and phosphorus (P) for 5 weeks. The anterior margin of scales from these fish were observed using alight microscope. After 2 weeks, the calcification was observed and compared with controls using scanning and transmission electron microscopy. In control fish, newly formed scale ridges were well calcified and had relativelysharp denticles. In fish fed the test diet, scale ridges formed but were uncalcified and had a mesh-like structure of collagen fibrils. Radial clusters of minerals were observed at the scale ridges in control fish, whereas only granular crystals were observed at the ridges in fish fed the test diet. These results suggest that scale ridges are mainly formed by collagen fibrils and not by the deposition of Ca and R Scale growth was reduced in goldfish under Ca- and P-deficient conditions for 5 weeks. Thenumber of ridges and the distance between ridges was also less in these fish. The changes in scale growth seemed to be synchronized with the formation of an organic matrix of collagen fibrils.
机译：研究了钙化在金鱼鳞片形成中形成脊的作用。金鱼在蒸馏水中持有，并在钙（Ca）和磷（P）中缺乏测试饮食5周。使用Alight显微镜观察来自这些鱼的鳞片的前缘。 2周后，使用扫描和透射电子显微镜观察并将钙化与对照进行比较。在对照鱼中，新成型的鳞片脊钙化良好并具有相对较为的牙本丛。在喂养试验饮食的鱼中，形成尺度脊，但是未碳化，并且具有胶原型原纤维的网状结构。在对照鱼的尺度脊上观察到矿物质的径向簇，而仅在喂食试验饮食的鱼中观察到粒状晶体。这些结果表明，尺度脊主要由胶原纤维形成，而不是通过Ca的沉积而不是Ca-和P缺乏条件下的金鱼中的增长，5周。在那个鱼中，脊之间的距离也少于这些鱼。规模增长的变化似乎与胶原型原纤维的有机基质的形成同步。

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