MEPS 517:61-74 Supplementary Material
Mechanisms of prey size selection in a suspension-feeding copepod, Temora longicornis
MEPS 517:61-74 | Full text in pdf format
Supplementary Material
Link to videos
Video_01a
Temora longicornis detects a prey (Lingulodinium polyedrum, ESD 24 mm) and elicits a capture reaction. Note the sudden (i.e. out of the previous beating rhythm) action of the 2nd antenna to catch the cell. Video sequence is approx. 146 times slower than real life.
Video_01b
Temora longicornis detects a prey (Lingulodinium polyedrum, ESD 24 mm) and elicits a capture reaction. Note the sudden (i.e. out of the previous beating rhythm) action of the 2nd antenna and maxilliped to catch the cell. Video sequence is approx. 146 times slower than real life.
Video_01c
Temora longicornis detects a prey (Lingulodinium polyedrum, ESD 24 mm) and elicits a capture reaction. Note the extension of maxilliped to catch the cell. Video sequence is approx. 146 times slower than real life.
Video_02
Temora longicornis detects a prey (Lingulodinium polyedrum, ESD 24 mm) and elicits a capture reaction. Note the extension of maxilliped to catch the cell, which is driven upwards (i.e. against the feeding current) and brought to focus (i.e. in front of the mouth region). Video sequence is approx. 146 times slower than real life.
Video_03
The copepod Temora longicornis detects a prey (Lingulodinium polyedrum, ESD 24 mm) with 2nd antenna and captures it with the maxilliped. Video sequence is approx. 146 times slower than real life.
Video_04
The ciliate Mesodinium rubrum (ESD 23 mm) has evasive behavior and a significant swimming speed, i.e., comparable to that of the feeding current generated by the copepod Temora longicornis. This prey escaped the feeding current even before the copepod showed a capture response. Video sequence is approx. 146 times slower than real life.
Video_05
Active prey rejection (after capture reaction and handling). The copepod Temora longicornis tries to eat the Akashiwo sanguinea (ESD 33 mm). The copepod starts flapping the maxillae and maxillipeds until the particle is pushed away. Video sequence is approx. 146 times slower than real life.
Video_06
Passive rejection. The copepod Temora longicornis tries to eat the diatom Coscinodiscus radiatus (ESD 58 mm). Apparently the prey is too big to be ingested by the copepod. The copepod handles the cell for about 1/2 sec trying to enter the particle in the mouth before giving up and rejecting the cell. Video sequence is approx. 146 times slower than real life.