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Domestication and feralization influence the distribution and phenotypes of escaped ornamental fish
Biological Invasions ( IF 2.8 ) Pub Date : 2021-01-05 , DOI: 10.1007/s10530-020-02415-1
Quenton M. Tuckett , Kirsten N. Ressel , Jared L. Ritch , Katelyn M. Lawson , Jeffrey E. Hill

Domestication has a dominant and increasing influence on the evolutionary trajectory of species, the extent of which may be influenced by advertent selection used to meet consumer demands of the ornamental trade. Ornamental species can have multiple varieties in trade, including those produced without advertent selection for color (i.e., inadvertent selection). Consumer demand for colorful varieties can have invasion consequences because demand is related to propagule pressure and color can exhibit fitness costs. However, domesticated varieties can also adapt to wild conditions through feralization, changing the phenotypes of feral populations. Our objective was to examine how domestication and feralization together influence the feral distribution and phenotypes of two highly domesticated, ornamental poeciliids. We first determined that colorful varieties exhibited higher trade availability and local production than the wild-type variety. Using a multi-year landscape-scale survey, we then determined that colorful varieties are common near sources of production but attenuated at increasing distance, replaced by the wild-type form. Wild-type varieties exhibited trait differences from ornamental varieties, which may affect fitness and result from feralization. Domestication to meet consumer demand influences feral distributions and phenotypes of escaped fish, but only in proximity to sources of production. Feralization influences relative capture rate of ornamental versus wild-type varieties, as well as the traits of captured fish. Thus, there may be a balance between propagule pressure, thought to increase with trade volume, and the pattern of domestication and feralization selection, which affects feral distribution and phenotypes.



中文翻译:

驯化和驯化影响逃生观赏鱼的分布和表型

驯化对物种的进化轨迹具有显着的影响,并且不断增加,其程度可能受到用于满足观赏业消费者需求的不合理选择的影响。观赏物种可以有多种贸易品种,包括那些未经颜色选择(即无意选择)生产的品种。消费者对色彩缤纷的品种的需求可能会带来入侵后果,因为需求与繁殖压力有关,而颜色会带来适应性成本。但是,驯化品种也可以通过野生化适应野生条件,从而改变野生种群的表型。我们的目的是研究驯化和野生化如何共同影响两个高度驯化的观赏性拟南芥的野生分布和表型。我们首先确定,与野生型品种相比,五颜六色的品种具有更高的贸易可用性和本地产量。然后,通过多年的景观规模调查,我们确定了五颜六色的品种在生产来源附近是常见的,但是随着距离的增加而衰减,被野生型形式取代。野生型品种表现出与观赏品种不同的性状差异,这可能会影响适应性并导致野性化。满足消费者需求的驯化会影响野生鱼类的分布和表型,但仅在生产来源附近。野性化影响观赏型和野生型相对捕获率以及捕获鱼的性状。因此,在传播压力(可能会随着交易量增加)之间可能存在平衡,

更新日期:2021-01-05
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