Size at Maturity, Spawning Season, and Food of Atlantic Halibut

1967 ◽  
Vol 24 (1) ◽  
pp. 53-66 ◽  
Author(s):  
A. C. Kohler
Keyword(s):  
Spawning Season ◽  
Otter Trawl ◽  
Atlantic Halibut ◽  
Size At Maturity ◽  
Hippoglossus Hippoglossus ◽  
Trawl Catches

In otter-trawl catches of Atlantic halibut (Hippoglossus hippoglossus L.) by research vessels from 1959 to 1964, mature males less than 66 to 70 cm long were not regularly encountered. Males were 96 to 100 cm long before the majority were mature, and females slightly longer. The research catches and commercial samples taken by longline from 1961 to 1963 indicated that spawning occurred at various times during the first half of the year. Halibut up to 30 cm long ate invertebrates; from 30 to 80 cm, invertebrates and fish; and over 80 cm, fish almost exclusively.

Survival of Atlantic Halibut (Hippoglossus hippoglossus) Caught by Longline and Otter Trawl Gear

1989 ◽  
Vol 46 (5) ◽  
pp. 887-897 ◽  
Author(s):  
John D. Neilson ◽  
Kenneth G. Waiwood ◽  
Stephen J. Smith
Keyword(s):  
Handling Time ◽  
Bottom Trawl ◽  
Minimum Size ◽  
Otter Trawl ◽  
Fish Length ◽  
Atlantic Halibut ◽  
Small Fish ◽  
Total Catch ◽  
Hippoglossus Hippoglossus ◽  
Size Limit

To assess the effectiveness of a proposed minimum size limit (81 cm) for Atlantic halibut (Hippoglossus hippoglossus) in Canadian waters, the survival of small fish caught in longline and bottom trawl gear was examined using live holding facilities onboard a research vessel and subsequently, in a land-based laboratory. Commercial practices were simulated during fishing operations. Of halibut less than the proposed size limit, 35% of the otter trawl catch and 77% of the longline catch survived more than 48 h. Factors potentially influencing halibut survival (handling time, total catch, fish length, maximum depth fished, and trawl duration) were examined using proportional hazard models. On the basis of those analyses, it was concluded that in bottom trawl sets of duration used in the commercial fishery (≥ 2 h), higher survival times were associated with shorter handling time, larger fish size, and comparatively small total catch weight. Supplemental information on the condition of trawl-caught halibut was also obtained from observers stationed onboard commercial trawlers.

scholarly journals Evidence of fjord spawning by southern Norwegian Atlantic halibut (Hippoglossus hippoglossus)

2014 ◽  
Vol 71 (5) ◽  
pp. 1142-1147 ◽  
Author(s):  
Andrew C. Seitz ◽  
Kathrine Michalsen ◽  
Jennifer L. Nielsen ◽  
Mark D. Evans
Keyword(s):  
Spawning Season ◽  
Atlantic Halibut ◽  
Hippoglossus Hippoglossus ◽  
Norwegian Fjord

Abstract Atlantic halibut (Hippoglossus hippoglossus) in a Norwegian fjord were tagged with pop-up archival transmitting (PAT) tags to investigate whether they join offshore spawning events with halibut from other regions. All fish (n = 4) remained in the fjord throughout the spawning season, suggesting that they may be reproductively segregated from other stocks.

Survival of Atlantic halibut (Hippoglossus hippoglossus) following catch-and-release angling

2017 ◽  
Vol 186 ◽  
pp. 634-641 ◽  
Author(s):  
Keno Ferter ◽  
Audun H. Rikardsen ◽  
Tor H. Evensen ◽  
Martin-A. Svenning ◽  
Sean R. Tracey
Keyword(s):  
Atlantic Halibut ◽  
Hippoglossus Hippoglossus ◽  
Catch And Release
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