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Diet and prey selectivity of the mesopelagic lanternfish Myctophum asperum from the Perth Canyon, Western Australia
Ichthyological Research ( IF 1.2 ) Pub Date : 2020-10-27 , DOI: 10.1007/s10228-020-00782-2
Daniel L. Cohen , Lynnath E. Beckley

The diet and prey selectivity of Myctophum asperum were examined from the Perth Canyon (Western Australia). Calanoid copepods were consumed by 83% of the M. asperum examined and constituted 39% of the total number of prey items. Larger adult euphausiids were consumed by 48% of M. asperum and constituted 15% of the total number of prey items. Prey selectivity was assessed using Chesson’s Index and calanoids were not positively selected with M. asperum showing a preference for euphausiids and neutrally selecting most other zooplankton. This study contributes to understanding of the pelagic food web of the Perth Canyon Marine Park.

中文翻译:

来自西澳大利亚珀斯峡谷的中层远洋灯笼鱼 Myctophum asperum 的饮食和猎物选择性

从珀斯峡谷(西澳大利亚)检查了 Myctophum asperum 的饮食和猎物选择性。被检查的 M. asperum 的 83% 消耗了 Calanoid 桡足类,占猎物总数的 39%。M. asperum 的 48% 消耗了较大的成年磷虾,占猎物总数的 15%。使用 Chesson's Index 评估猎物选择性,并没有积极选择海藻类,而 M. asperum 显示偏爱磷虾类,中性选择大多数其他浮游动物。这项研究有助于了解珀斯峡谷海洋公园的远洋食物网。
更新日期:2020-10-27
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