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首页> 外文期刊>Marine biology >Low feeding preference of native herbivores for the successful non-native seaweed Heterosiphonia japonica
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Low feeding preference of native herbivores for the successful non-native seaweed Heterosiphonia japonica

机译：成功的非本地海藻日本杂草的天然食草动物的低食性

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摘要

Non-native seaweeds constitute a conspicuous component of many benthic coastal communities. Seaweed invaders are known to significantly affect invaded communities, but relatively little is known about the mechanisms underlying their success. In this study, we explored the feeding preferences of three generalist herbivores for the successful non-native red alga Heterosiphonia japonica and native seaweed competitors. The experiments were conducted on the Swedish Skagerrak coast (58A degrees 52'N, 11A degrees 08'E) from July to August. Additionally, chemical and physical traits of the seaweeds were assessed to mechanistically explain herbivore preferences. The results showed that H. japonica was of low preference to native herbivores and that this was most likely explained by chemical properties of the invader. We were, however, not able to determine whether the low preference was caused by deterrent metabolites or low nutritional quality. We conclude that herbivore avoidance may be important for the survival and success of H. japonica in the introduced range and that efficient means of escaping herbivory may be a common feature of invaders in seaweed communities.
机译：非原生海藻构成许多底栖沿海社区的重要组成部分。已知海藻入侵者会严重影响被入侵的社区，但对其成功所依据的机制知之甚少。在这项研究中，我们探讨了三种通才草食动物对成功的非本地红藻日本杂草和本地海藻竞争者的摄食偏好。实验于7月至8月在瑞典的Skagerrak海岸（58A度52'N，11A度08'E）上进行。此外，还评估了海藻的化学和物理特性，以机械方式解释了草食动物的喜好。结果表明，粳稻对天然草食动物的偏爱性较低，这很可能是由入侵者的化学性质所解释的。但是，我们无法确定低偏好是由代谢威慑作用还是营养质量低引起的。我们得出的结论是，避免草食动物可能对引进的范围内的日本粳稻的生存和成功至关重要，而有效的逃避草食动物的手段可能是海藻群落入侵者的共同特征。

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  • 来源
    《Marine biology》 |2015年第12期|2471-2479|共9页
  • 作者

    Sagerman Josefin; Enge Swantje; Pavia Henrik; Wikstrom Sofia A.;

  • 作者单位

    Stockholm Univ, Dept Ecol Environm & Plant Sci, S-10691 Stockholm, Sweden;

    Univ Gothenburg, Dept Biol & Environm Sci Tjarno, S-45296 Stromstad, Sweden;

    Univ Gothenburg, Dept Biol & Environm Sci Tjarno, S-45296 Stromstad, Sweden;

    Stockholm Univ, Balt Sea Ctr, S-10691 Stockholm, Sweden|Stockholm Univ, Dept Ecol Environm & Plant Sci, S-10691 Stockholm, Sweden;

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