How Nemo finds home: The neuroecology of dispersal and of population connectivity in larvae of marine fishes

Leis, Jeffrey M., Siebeck, Ulrike and Dixson, Danielle L. (2011) How Nemo finds home: The neuroecology of dispersal and of population connectivity in larvae of marine fishes. Integrative and Comparative Biology, 51 5: 826-843. doi:10.1093/icb/icr004


Author Leis, Jeffrey M.
Siebeck, Ulrike
Dixson, Danielle L.
Title How Nemo finds home: The neuroecology of dispersal and of population connectivity in larvae of marine fishes
Journal name Integrative and Comparative Biology   Check publisher's open access policy
ISSN 1540-7063
1557-7023
Publication date 2011-11
Sub-type Article (original research)
DOI 10.1093/icb/icr004
Volume 51
Issue 5
Start page 826
End page 843
Total pages 18
Place of publication Oxford, United Kingdom
Publisher Oxford University Press
Collection year 2012
Language eng
Abstract Nearly all demersal teleost marine fishes have pelagic larval stages lasting from several days to several weeks, during which time they are subject to dispersal. Fish larvae have considerable swimming abilities, and swim in an oriented manner in the sea. Thus, they can influence their dispersal and thereby, the connectivity of their populations. However, the sensory cues marine fish larvae use for orientation in the pelagic environment remain unclear. We review current understanding of these cues and how sensory abilities of larvae develop and are used to achieve orientation with particular emphasis on coral-reef fishes. The use of sound is best understood; it travels well underwater with little attenuation, and is current-independent but location-dependent, so species that primarily utilize sound for orientation will have location-dependent orientation. Larvae of many species and families can hear over a range of 100–1000 Hz, and can distinguish among sounds. They can localize sources of sounds, but the means by which they do so is unclear. Larvae can hear during much of their pelagic larval phase, and ontogenetically, hearing sensitivity, and frequency range improve dramatically. Species differ in sensitivity to sound and in the rate of improvement in hearing during ontogeny. Due to large differences among-species within families, no significant differences in hearing sensitivity among families have been identified. Thus, distances over which larvae can detect a given sound vary among species and greatly increase ontogenetically. Olfactory cues are current-dependent and location-dependent, so species that primarily utilize olfactory cues will have location-dependent orientation, but must be able to swim upstream to locate sources of odor. Larvae can detect odors (e.g., predators, conspecifics), during most of their pelagic phase, and at least on small scales, can localize sources of odors in shallow water, although whether they can do this in pelagic environments is unknown. Little is known of the ontogeny of olfactory ability or the range over which larvae can localize sources of odors. Imprinting on an odor has been shown in one species of reef-fish. Celestial cues are current- and location-independent, so species that primarily utilize them will have location-independent orientation that can apply over broad scales. Use of sun compass or polarized light for orientation by fish larvae is implied by some behaviors, but has not been proven. Use of neither magnetic fields nor direction of waves for orientation has been shown in marine fish larvae. We highlight research priorities in this area.
Keyword Coral Reef Fishes
Great Barrier Reef
Polarized Light
Pelagic Larvae
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes First published online: May 11, 2011

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2012 Collection
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