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Title

Reply to comment: Prey perception in feeding-current feeding copepods

AuthorsKiørboe, Thomas; Gonçalves, Rodrigo J.; Couespel, Damien; van Someren Gréve, Hans; Saiz, Enric ; Tiselius, Peter
Issue DateJul-2016
PublisherAssociation for the Sciences of Limnology and Oceanography
CitationLimnology and Oceanography 61(4): 1169-1171 (2016)
AbstractWe reply to the comments of Paffenhöfer and Jiang (2016) who argues that remote chemical prey perception is necessary for feeding-current feeding copepods to fulfill their nutritional requirements in a dilute ocean, that remote chemical prey detection may only be observed at very low prey concentrations, and that chemical prey perception is feasible if prey cells release dissolved organic material in short-lasting but intense bursts. We demonstrate that mechanoreception at a very short range is sufficient to sustain a living, even in a dilute ocean. Further, if chemoreception requires that prey cells have short intense leakage burst, only a very small fraction of prey cells would be available to the copepod at any instance in time and, thus would be inefficient at low prey concentration. Finally, we report a few new observations of prey capture in two species of copepods, Temora longicornis and Centropages hamatus, offered a 45-μm sized dinoflagellate at very low concentration. The observed short prey detection distances, up to a few prey cell radii, are consistent with mechanoreception and we argue briefly that near-field mechanoreception is the most likely and common prey perception mechanism in calanoid copepods
Description3 pages, 1 figure, supporting information https://dx.doi.org/10.1002/lno.10293
Publisher version (URL)https://dx.doi.org/10.1002/lno.10293
URIhttp://hdl.handle.net/10261/135317
DOI10.1002/lno.10293
Identifiersdoi: 10.1002/lno.10293
issn: 0024-3590
e-issn: 1939-5590
Appears in Collections:(ICM) Artículos
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