Location, location, location: small shifts in collection site result in large intraspecific differences in macroalgal palatability
Location, location, location: small shifts in collection site result in large intraspecific differences in macroalgal palatability
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位置，位置，位置：采集地点的微小变化会导致大型藻类适口性的巨大种内差异
DOI：
10.1007/s00338-015-1274-2
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发表时间：
2015
期刊：
影响因子：
3.5
通讯作者：
P. Fong
中科院分区：
文献类型：
--
作者：
Kathryn N. Keeley;Jolie D. Stroh;Diem Samantha C. Tran;C. R. Fong;P. Fong
草食性鱼类在珊瑚礁恢复力中的作用增加了人们对草食性过程的兴趣，并将注意力集中在草食性摄食行为上，因此评估用于评估草食性决策的实验方法非常重要。我们测试了收集地点的小规模差异是否在大型藻类的种内适口性中发挥作用。利用在法属波利尼西亚的莫雷阿岛边缘礁上采集的藻类进行的基线放牧测定显示，三种常见物种中的食草动物偏好排列为Padina boryana > Sargassum mangarevense> Amansia rhodantha。通过对同一种藻的个体之间的放牧选择性比较，发现潮间带S. mangarevense是近六倍大于从邻近的潮下带礁滩收集的同种。同样的趋势也发生在P. boryana，但不显著。这表明，藻类的适口性可以在一个非常小的空间尺度上变化，提出了一个潜在的陷阱，为粗心的实验设置时，我们鼓励研究人员在草食动物的实验研究中考虑这种潜在的并发症。
The role of herbivorous fishes in coral reef resilience has increased interest in the process of herbivory and has focused attention on herbivore feeding behavior, making it important to evaluate experimental methods used to assess herbivore decisions. We tested whether small-scale differences in collection site play a role in within-species palatability of macroalgae. Baseline grazing assays using algae collected on a fringing reef in Moorea, French Polynesia, revealed that herbivore preferences among three common species ranked Padina boryana > Sargassum mangarevense ≫ Amansia rhodantha. Comparing grazing preferences between individual thalli of the same species collected <15 m apart revealed that consumption of intertidal S. mangarevense was nearly six times greater than for conspecifics collected from the adjacent subtidal reef flat. The same trend occurred for P. boryana but was not significant. This demonstrated that algal palatability can vary on a very small spatial scale, presenting a potential trap for the unwary when setting up experiments; we encourage researchers to consider this potential complication in experimental studies of herbivory.
消费者多样性与猎物防御相互作用，推动生态系统功能。
影响因子：
4.8
作者：
Rasher,DouglasB;Hoey,AndrewS;Hay,MarkE
通讯作者：
Hay,MarkE