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首页> 外文期刊>Reviews in Fish Biology and Fisheries >Crystalline otoliths in teleosts: comparisons between hatchery and wild coho salmon (Oncorhynchus kisutch) in the Strait of Georgia.
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Crystalline otoliths in teleosts: comparisons between hatchery and wild coho salmon (Oncorhynchus kisutch) in the Strait of Georgia.

机译：硬骨鱼中的结晶耳石：佐治亚州海峡的孵化场和野生银大麻哈鱼（Oncorhynchus kisutch）之间的比较。

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摘要

Otoliths, or 'ear stones', are calcium carbonate structures found in all vertebrates. In teleosts, they have a number of sensory functions, including hearing. Daily growth increments of these structures have permitted advanced age and population studies of teleosts. Whereas 'normal' otoliths are composed of crystals imbedded within a protein matrix as aragonite, a 'crystalline' form of calcium carbonate termed vaterite is also found. A review of the otolith literature demonstrates a significant level of understanding of the structure and function of otoliths, but the cause for crystalline otolith structure remains speculative. Pairs of otoliths from hatchery and wild juvenile and adult coho salmon (Oncorhynchus kisutch) were examined visually for determination of otolith microstructure type. The vateritic or crystalline otoliths were found in much higher percentages in juvenile hatchery-reared coho salmon than in juvenile wild coho salmon, supporting previous studies. There did not seem to be any negative impact on size or survival. There was also no correlation between crystalline otoliths and premature maturation in coho males. A preliminary study of adult coho salmon returning to Big Qualicum and Chilliwack hatcheries showed even higher ratios of vateritic otoliths than observed in juveniles..
机译：耳石或“耳石”是在所有脊椎动物中发现的碳酸钙结构。在硬骨鱼中，它们具有多种感觉功能，包括听力。这些结构的每日增长增量允许对硬骨鱼进行高龄和种群研究。 “正常”耳石由嵌入文石中的文石作为文石组成，而碳酸钙的“晶体”形式也称为v石。耳石文献的回顾表明对耳石的结构和功能有相当高的了解，但结晶耳石结构的原因仍是推测性的。目视检查孵化场，野生少年和成年银鲑（Oncorhynchus kisutch）对的耳石，以确定耳石的显微结构类型。在孵化场孵化的银大麻哈鱼中发现的绒毛状或晶体耳石的百分比比野生野生银大麻哈鱼的百分比高得多，这支持了先前的研究。似乎对规模或生存率没有任何负面影响。在银大麻哈鱼男性中，晶体耳石与早熟之间也没有相关性。对重返大Qualicum和Chilliwack孵化场的成年银大麻哈鱼的初步研究显示，比幼鱼观察到的什锦耳石的比例更高。

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