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首页> 外文期刊>Aquaculture Reports >The pearl oyster (Pinctada margaritifera) aquaculture in French Polynesia and the indirect impact of long-distance transfers and collection-culture site combinations on pearl quality traits
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The pearl oyster (Pinctada margaritifera) aquaculture in French Polynesia and the indirect impact of long-distance transfers and collection-culture site combinations on pearl quality traits

机译：法属波利尼西亚的珍珠贝（Pinctada margaritifera）水产养殖以及长距离转移和采集-养殖地点组合对珍珠品质性状的间接影响

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In French Polynesia, the P. margaritifera pearl aquaculture industry is spread over a vast area, as large as Europe. All the oysters for this the highly economically important activity are supplied from just a few collection lagoons, but they are grown in numerous sites across three archipelagos (Gambier, Society and Tuamotu). Many oyster transfers thus indirectly bring about grafting combinations mixing different geographic origins and production sites. This study aims to examine the impact of such graft combinations on cultured pearl quality traits. For this, six homogeneous and standardised experimental graft combinations (N?=?6197) were conducted at commercial scale in the two growing locations the most frequently used in French Polynesia: Arutua atoll (Tuamotu) and Mangareva island (Gambier), using oysters supplied from by the top three collection sites: Ahe, Takapoto and Mangareva lagoons. At harvest, four main pearl quality traits: nacre weight deposition speed, pearl colour components (darkness level and green overtone), grade and shape categories were recorded by a professional sorter from the Tahiti auction and compared. Results revealed effects of the combinations of oyster origin and grow-out location, with: 1) significant origin?×?site interaction for nacre weight deposition speed; 2) colour variation at intra- and inter-site scales, with Ahe origin producing the most dark pearls and Gambier highest rate of the attractive green coloured pearls; and 3) higher grade categories for the Gambier origin and rearing location. These oyster-site combination effects highlight the benefit for the Polynesian pearl industry of switching from a mono-site/ company production system to a new multi-site production strategy to maximize overall cultured pearl quality expression.
机译：在法属波利尼西亚，玛格丽特珍珠珍珠水产养殖业遍及整个欧洲。这项具有重要经济意义的活动的所有牡蛎仅由少数几个泻湖提供，但它们在三个群岛（甘比尔，协会和图阿莫图）的多个地点养殖。因此，许多牡蛎转移间接导致了混合了不同地理起源和生产地点的嫁接组合。这项研究旨在检查这种嫁接组合对养殖珍珠品质性状的影响。为此，在法属波利尼西亚最常用的两个生长地点：阿鲁图环礁（Tuamotu）和曼加列瓦岛（甘比尔），使用提供的牡蛎，以商业规模进行了六种均质且标准化的实验嫁接组合（N？=？6197）。排名前三位的地点分别是：Ahe，Takapoto和Mangareva泻湖。在收获时，塔希提岛拍卖行的专业分拣员记录了珍珠的四个主要品质特征：珍珠质沉积速度，珍珠色成分（暗度和绿色色调），等级和形状类别，并进行了比较。结果揭示了牡蛎起源和成年位置的组合的影响，具有：1）显着的起源×位点相互作用对珍珠层重量沉积速度的影响; 2。 2）站点内部和站点之间的颜色变化，其中以Ahe来源生产的深色珍珠最多，而Gambier所吸引的绿色珍珠的比例最高。 3）甘比尔原产地和饲养地点的较高品位类别。这些牡蛎站点组合效应突出了波利尼西亚珍珠产业的好处，即从单站点/公司生产系统转换为新的多站点生产策略，以最大限度地提高养殖珍珠的整体质量表现。

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