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首页> 外文期刊>ICES Journal of Marine Science >Movement of juvenile tuna deduced from parasite data
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Movement of juvenile tuna deduced from parasite data

机译：从寄生虫数据推算出少年金枪鱼的运动

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The movements, and hence stock structures, of bigeye tuna, Thunnus obesus, and yellowfin tuna, Thunnus albacares, remain poorly defined despite their importance to food security, livelihoods and government revenue in many nations. We examined the parasite fauna of juvenile bigeye tuna and juvenile yellowfin tuna from areas within and outside Indonesia to determine how far they may have moved since metamorphosis and acquisition of a piscivorous diet. Patterns in parasite data between collection areas were consistent between the two tuna species. Fish from two outlier areas, Maldives and the Solomon Islands, harboured a distinct parasite fauna from those from adjacent Indonesian areas, although occasionally showed similarity with those from within the Indonesian archipelago. Within Indonesia, the parasite data indicated that few juvenile fish moved west from the Pacific Ocean into the archipelago and few moved west from the archipelago into the eastern Indian Ocean. While sampling of adult fish is required to fully resolve the stock structure of both tuna species, the results provide a necessary first-step in examining structuring of the two tuna species in Indonesia and indicate that juveniles of both species may have more restricted movement than is recognized in current management arrangements.
机译：大眼金枪鱼，金枪鱼和黄鳍金枪鱼，白鳍金枪鱼的运动及其种群结构，尽管在许多国家对粮食安全，生计和政府收入都很重要，但其定义仍然不明确。我们检查了来自印度尼西亚内外地区的幼年大眼金枪鱼和幼年黄鳍金枪鱼的寄生虫动物群，以确定自变形和获得食鱼性饮食以来它们可能已经移动了多远。两个金枪鱼物种之间的采集区域之间的寄生虫数据模式是一致的。马尔代夫和所罗门群岛这两个偏远地区的鱼类与邻国印度尼西亚地区的鱼类相比，具有不同的寄生虫动物区系，尽管有时与印度尼西亚群岛内的鱼类相似。在印度尼西亚内部，寄生虫数据表明，很少有幼鱼从太平洋西移到群岛，很少有鱼从群岛西移到印度洋东部。虽然需要抽样成鱼才能完全解决两种金枪鱼物种的种群结构，但结果为检查印度尼西亚两种金枪鱼物种的结构提供了必要的第一步，并表明这两种金枪鱼的幼鱼活动可能受到限制。在当前的管理安排中得到认可。

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