Diel variation in vertical distribution of an offshore ichthyoplankton community off the Oregon coast

Auth, Toby D. and Brodeur, Richard D. and Fisher, Kathleen M. (2007) Diel variation in vertical distribution of an offshore ichthyoplankton community off the Oregon coast. Fishery Bulletin, 105(3), pp. 313-326.

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Abstract

We examined the diel ver-tical distribution, concentration, and community structure of ichthyoplank-ton from a single station 69 km off the central Oregon coast in the northeast Pacific Ocean. The 74 depth-stratified samples yielded 1571 fish larvae from 20 taxa, representing 11 families, and 128 fish eggs from 11 taxa within nine families. Dominant larval taxa were Sebastes spp. (rockfishes), Stenobra-chius leucopsarus (northern lampfish), Tarletonbeania crenularis (blue lan-ternfish), and Lyopsetta exilis (slender sole), and the dominant egg taxa were Sardinops sagax (Pacific sardine), Icichthys lockingtoni (medusafish), and Chauliodus macouni (Pacific viperfish). Larval concentrations generally increased from the surface to 50 m, then decreased with depth. Larval concentrations were higher at night than during the day, and there was evidence of larval diel vertical migration. Depth stratum was the most important factor explaining variability in larval and egg concentrations.

Item Type: Article
Title: Diel variation in vertical distribution of an offshore ichthyoplankton community off the Oregon coast
Personal Creator/Author:
CreatorsEmail
Auth, Toby D.
Brodeur, Richard D.
Fisher, Kathleen M.
Refereed: Yes
Journal or Publication Title: Fishery Bulletin
Volume: 105
Number: 3
Page Range: pp. 313-326
Date: 2007
ISSN: 0090-0656
Issuing Agency: United States National Marine Fisheries Service
Subjects: Biology
Ecology
Fisheries
Item ID: 8874
Depositing User: Patti M. Marraro
Date Deposited: 18 Jun 2012 09:36
Last Modified: 18 Jun 2012 09:36
URI: http://aquaticcommons.org/id/eprint/8874

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