小北极足动物的饮食可塑性,正如猎物元编码所揭示的那样
Snorre Flo1,2, Camilla Svensen1, Kim Præbel3,4
1Department of Arctic and Marine Biology, Faculty of Biosciences, Fisheries and Economics, UiT The Arctic University of Norway, Framstredet 39, 9019 Tromsø, Norway.
Journal of plankton research
|October 3, 2024
概括
小型北极足动物表现出显著的饮食可塑性,适应它们的食习惯以适应季节性的猎物可用性. 这种适应能力对于在动态的北极海洋食物网中生存至关重要.
科学领域:
- 海洋生态海洋生态学
- 北极生物学 北极生物学
- 食物网络动力学 食物网络动力学
背景情况:
- 小足对北极海洋食物网至关重要.
- 由于过去的方法挑战,它们的食用相互作用尚不清楚.
研究的目的:
- 为了研究关键的小北极足动物的饮食:Oithona similis,Microsetella norvegica和Microcalanus spp.
- 了解它们的猎物组成的季节性变化和物种特异性差异.
主要方法:
- 利用了18S rRNA基因的粗暴武力猎物元编码.
- 在四个季节中分析了来自北极巴伦茨海和南森盆地的样本.
主要成果:
- 柴托格纳斯是最常见的猎物,占阅读的47%.
- 季节性猎物各不相同,四月至五月有藻 (43%),冬季有恐龙 (15-17%).
- 与Oithona similis和Microcalanus spp.相比,Microsetella norvegica表现出一种不同的饮食.
- 饮食成分因季节而异,而不是因类物种而异.
结论:
- 不管它们的食策略如何,小型北极足动物都表现出相当大的食可塑性.
- 这种可塑性很可能是对北极生态系统中高度季节性的猎物可用性的适应.
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