The hydrodynamic regime drives flow reversals in suction-feeding larval fishes during early ontogeny.
Feeding kinematics
Reynolds numbers
Sparus aurata
Journal
The Journal of experimental biology
ISSN: 1477-9145
Titre abrégé: J Exp Biol
Pays: England
ID NLM: 0243705
Informations de publication
Date de publication:
11 05 2020
11 05 2020
Historique:
received:
16
09
2019
accepted:
24
03
2020
pubmed:
8
4
2020
medline:
22
6
2021
entrez:
8
4
2020
Statut:
epublish
Résumé
Fish larvae are the smallest self-sustaining vertebrates. As such, they face multiple challenges that stem from their minute size, and from the hydrodynamic regime in which they dwell. This regime, of intermediate Reynolds numbers, was shown to affect the swimming of larval fish and impede their ability to capture prey. Prey capture is impeded because smaller larvae produce weaker suction flows, exerting weaker forces on the prey. Previous observations on feeding larvae also showed prey exiting the mouth after initially entering it (hereafter 'in-and-out'), although the mechanism causing such failures had been unclear. In this study, we used numerical simulations to investigate the hydrodynamic mechanisms responsible for the failure to feed caused by this in-and-out prey movement. Detailed kinematics of the expanding mouth during prey capture by larval
Identifiants
pubmed: 32253288
pii: jeb.214734
doi: 10.1242/jeb.214734
pmc: PMC7240303
pii:
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Informations de copyright
© 2020. Published by The Company of Biologists Ltd.
Déclaration de conflit d'intérêts
Competing interestsThe authors declare no competing or financial interests.
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