Shifts in morphology and diet of non-native sticklebacks introduced into Japanese crater lakes.
Shifts in morphology and diet of non-native sticklebacks introduced into Japanese crater lakes.
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DOI：
10.1002/ece3.234
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发表时间：
2012-06
影响因子：
2.6
通讯作者：
Kitano, Jun
中科院分区：
文献类型：
--
作者：
Adachi, Tatsuya;Ishikawa, Asano;Mori, Seiichi;Makino, Wataru;Kume, Manabu;Kawata, Masakado;Kitano, Jun
越来越多的外来动物正在引起生态问题。因此，为了更好地管理生态系统，了解外来物种如何殖民和适应新的环境是很重要的。三刺鱼（Gasterosteus aculeatus）不仅可以作为研究自然种群适应性的生态学和遗传学机制的一个良好的脊椎动物模式系统，而且也可以作为研究外来种群适应性的一个良好的模式系统。虽然在几个引进的棘鱼种群的形态变化已被记录，很少有人知道的饮食变化殖民到新的环境。在这里，我们调查了外来threespine刺鱼种群的形态和饮食变化引入到三个日本火山口湖（湖十和田，湖Kussharo，支笏湖）。刺鱼被引入火山口湖可能沿着鲑鱼移植水产养殖。库沙罗湖的棘鱼种群有多个线粒体单倍型，比其他只有一个线粒体单倍型的火山口湖棘鱼种群有更大的表型变异。对十和田湖棘鱼种群的形态和胃内容物的历史数据汇编表明，在殖民化后，身体大小和胃内容物发生了重大变化。其中一些变化可能与血吸虫寄生虫的爆发有关。这些结果表明，刺鱼可以改变他们的形态和营养生态，当他们殖民新的环境。因此，当鲑鱼在流域之间运输用于水产养殖时，应特别小心，对外来物种的长期监测对生态系统管理至关重要。此外，对火山口湖棘鱼表型变化的进一步遗传研究将有助于阐明外来鱼类适应新环境的遗传机制。
An increasing number of exotic animals are causing ecological problems. Therefore, for better ecosystem management, it is important to understand how exotic species colonize and adapt to novel environments. The threespine sticklebacks (Gasterosteus aculeatus) can be a good vertebrate model system to explore the ecological and genetic mechanisms of adaptation not only in natural populations, but also in non-native populations. Although morphological changes have been documented in several introduced populations of stickleback, little is known about the dietary changes during colonization into novel environments. Here, we investigated the morphological and dietary changes of exotic threespine stickleback populations introduced into three Japanese crater lakes (Lake Towada, Lake Kussharo, and Lake Shikotsu). Sticklebacks were introduced into the crater lakes likely along with salmonids transplanted for aquaculture. The stickleback population in Lake Kussharo had multiple mitochondrial haplotypes and had larger phenotypic variances than other crater lake stickleback populations that had only one mitochondrial haplotype. Compilation of historical data on the morphology and stomach contents of the Lake Towada stickleback population showed that substantial shifts in body size and stomach contents occurred after colonization. Some of these changes may be related to an outbreak of the Schistocephalus parasite. These results suggest that sticklebacks can change their morphology and trophic ecology when they colonize novel environments. Therefore, extreme care should be taken when salmonids are transported between watersheds for aquaculture and that long-term monitoring of exotic species is essential for ecosystem management. In addition, further genetic studies on phenotypic changes in crater lake sticklebacks would help elucidate the genetic mechanisms underlying the adaptation of exotic fishes to novel environments.
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影响因子：
3.3
作者：
Albert, Arianne Y. K.;Sawaya, Sterling;Schluter, Dolph
通讯作者：
Schluter, Dolph
影响因子：
64.8
作者：
Barluenga, M;Stölting, KN;Meyer, A
通讯作者：
Meyer, A
影响因子：
64.8
作者：
Harmon, Luke J.;Matthews, Blake;Schluter, Dolph
通讯作者：
Schluter, Dolph
影响因子：
3.4
作者：
Barluenga, Marta;Meyer, Axel
通讯作者：
Meyer, Axel
影响因子：
3.3
作者：
Hendry, AP;Kinnison, MT
通讯作者：
Kinnison, MT