A comparison of length distributions of rockfishes (Sebastes spp.) from submersible and trawl surveys off central California

A comparison of length distributions of rockfishes (Sebastes spp.) from submersible and trawl surveys off central California

Data from the West Coast Bottom Trawl Survey and from surveys conducted with a manned submersible in nearby untrawlable areas were used to compare length distributions for greenspotted rockfish (Sebastes chlorostictus), greenstriped rockfish (S. elongatus), canary rockfish (S. pinniger), and vermili...

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Veröffentlicht in:Fishery bulletin (Washington, D.C.) D.C.), 2018-07, Vol.116 (3-4), p.291-301
Hauptverfasser: Watters, Diana L, Dick, E.J
Format: Artikel
Sprache:eng
Schlagworte:
Bottom trawling
Data
Distribution
Fish
Fishery research
Fishes
Length
Marine fishes
Polls & surveys
Scorpaeniformes
Sebastes chlorostictus
Sebastes elongatus
Sebastes miniatus
Sebastes pinniger
Spatial variations
Stock assessment
Submersibles
Surveying
Surveys
Trawling
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Beschreibung
Zusammenfassung:Data from the West Coast Bottom Trawl Survey and from surveys conducted with a manned submersible in nearby untrawlable areas were used to compare length distributions for greenspotted rockfish (Sebastes chlorostictus), greenstriped rockfish (S. elongatus), canary rockfish (S. pinniger), and vermilion rockfish (S. miniatus) off central California. For all 4 species, broader size ranges and greater proportions of small fish were present in the data from the submersible surveys, and length distributions were significantly different (P
ISSN:0090-0656
1937-4518
DOI:10.7755/FB.116.3-4.7