Diet and prey selectivity in three surface-migrating myctophids in the eastern tropical Pacific

作者：Van Noord Joel E^*; Olson Robert J; Redfern Jessica V; Kaufmann Ronald S

来源：Ichthyological Research, 2013, 60(3): 287-290.

DOI：10.1007/s10228-013-0350-2

• Myctophids
• Diet
• Selectivity
• Eastern tropical Pacific

To test feeding selectivity, the diets of three surface-migrating myctophids [Myctophum nitidulum (n = 299), Symbolophorus reversus (n = 199), and Gonichthys tenuiculus (n = 82)] were compared to zooplankton prey collections at 32 stations in the eastern Pacific Ocean, August-November 2006. Myctophum nitidulum fed predominately on copepods (42.7 % by number) and ostracods (41.5 %), selected amphipods (p = 0.002) and ostracods (p = 0.014), and avoided copepods (p < 0.001). Symbolophorus reversus fed on copepods (32.5 % by number) and euphausiids (29.6 %) and selected euphausiids (p = 0.002) and amphipods (p = 0.008). Gonichthys tenuiculus fed on ostracods (34.6 %) and amphipods (27.3 %), but showed no significant selectivity.

• 出版日期2013-7