Author:
Giuffre Carl,Hinow Peter,Jiang Houshuo,Strickler J. Rudi
Abstract
AbstractCalanoid copepods are small crustaceans that constitute a major element of aquatic ecosystems. Key to their success is their feeding apparatus consisting of sensor-studded mouth appendages that are in constant motion. These appendages generate a feeding current to enhance the encounter probability with food items. Additionally, sensing enables the organism to determine the position and quality of food particles, and to alter the near-field flow to capture and manipulate the particles for ingestion or rejection. Here we observe a freely swimming copepod Leptodiaptomus sicilis in multiple perspectives together with suspended particles that allow us to analyse the flow field created by the animal. We observe a highly periodic motion of the mouth appendages that is mirrored in oscillations of nearby tracer particles. We propose that the phase shift between the fluid and the particle velocities is sufficient for mechanical detection of the particles entrained in the feeding current. Moreover, we propose that an immersed algal cell may benefit from the excitation by increased uptake of dissolved inorganic compounds.
Funder
Simons Foundation
National Science Foundation
Publisher
Springer Science and Business Media LLC
Reference56 articles.
1. Humes, A. G. How many copepods? Hydrobiol. 292/293, 1–7 (1994).
2. Selden, P. A., Huys, R., Stephenson, M. H., Heward, A. P. & Taylor, P. N. Crustaceans from bitumen clast in Carboniferous glacial diamictite extend fossil record of copepods. Nat. Comm. 1, 50 (2010).
3. Purcell, E. M. Life at low Reynolds number. Am. J. Phys. 45, 3–11 (1977).
4. Rosenberg, G. Filmed observations of filter feeding in the marine planktonic copepod Acartia clausii. Limnol. Ocean. 25, 738–742 (1980).
5. Schröder, R. Über die Schlagfrequenz der 2. Antennen und Mundgliedmaßen bei calanoiden Copepoden. Arch. Hydrobiol./Suppl. (Falkau-Schriften) XXV, 348–349 (1961).
Cited by
4 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献