Distribution and duration of pelagic life of larvae of dover sole, Microstomus pacificus; rex sole, Glyptocephalus zachirus; and petrale sole, Eopsetta jordani, in waters off Oregon Public Deposited

http://ir.library.oregonstate.edu/concern/defaults/st74cw47w

Reprinted from Fishery bulletin, Vol. 75 (1), pages 173-183.

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  • Dover and rex sole larvae attain an exceptionally large size and have a long pelagic life. Dover sole larvae (9-65 mm standard length) were collected in mid-water trawls and plankton nets during all months of the year. Judging from growth of larvae and occurrence in bottom trawls of recently metamorphosed juveniles, Dover sole are pelagic during their first year of life. Large larvae (50-65 mm standard length) are probably pelagic for over a year and few apparently are recruited to benthic populations. Dover sole larvae were most common in oceanic waters beyond the continental slope and in the upper 50 m of the water column. The rex sole larvae captured were 5-89 mm long. Average size and stage of development of larvae increased from March through February, and juveniles were common on the bottom during winter on the outer shelf. Thus the pelagic phase usually lasts about a year. Both rex and Dover sole may utilize the outer continental shelf-upper slope region for a nursery during early benthic life. Petrale sole larvae (10-22 mm standard length) were rare. They were collected only from March to June and appear to have a pelagic life of about 6 mo. Age-group 0 juveniles, uncommon in bottom trawl collections, were only captured on the inner continental shelf in the fall.
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  • description.provenance : Submitted by Joe Nguyen (jnscanner@gmail.com) on 2010-01-06T23:56:15Z No. of bitstreams: 1 DistributionDurationPelagicLifeLarvaeDoverSole.pdf: 161212 bytes, checksum: 803e3a832ac383117cc64bdbcd3126a7 (MD5)
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