scholarly journals Functional foraging habits and dietary overlap of yellowfin sole (Limanda aspera) and northern rock sole (Lepidopsetta polyxystra) in a coastal nursery of the Bering Sea

2021 ◽  
Vol 120 (1) ◽  
pp. 1-12
Author(s):  
Nissa C. Ferm ◽  
Janet Duffy-Anderson ◽  
Thomas P. Hurst
Keyword(s):  
Bering Sea ◽  
Dietary Overlap ◽  
Yellowfin Sole ◽  
Limanda Aspera ◽  
The Bering Sea

Contrasting the variability in spatial distribution of two juvenile flatfishes in relation to thermal stanzas in the eastern Bering Sea

2019 ◽  
Vol 77 (3) ◽  
pp. 953-963
Author(s):  
Cynthia Yeung ◽  
Daniel W Cooper
Keyword(s):  
Spatial Distribution ◽  
Bering Sea ◽  
Thermal Environment ◽  
Bottom Temperature ◽  
Eastern Bering Sea ◽  
Northward Expansion ◽  
Yellowfin Sole ◽  
Temperature Indices ◽  
Limanda Aspera ◽  
The Bering Sea

Abstract Groundfish species in the Bering Sea are undergoing pronounced changes in spatial distribution and abundance due to warming ocean temperatures. The main drivers of interannual variability in this ecosystem are the alternating warm and cold thermal stanzas. Yellowfin sole (Limanda aspera; YFS) and northern rock sole (Lepidopsetta polyxystra; NRS) are commercially-valuable flatfishes in the Bering Sea and are among the most dominant groundfish species there in numbers and biomass. We examined the variability in the spatial distribution and abundance of juvenile NRS and YFS in relation to the ice and temperature conditions associated with warm-cold thermal shifts from 1982 to 2017. The goal was to assess the implications of the fluctuating thermal environment for Bering Sea flatfish production. We found ice cover and bottom temperature indices in the preceding 1 to 3 years to be the best predictors of NRS juvenile distribution. In contrast, these indices were not significantly correlated with YFS juvenile distribution, which could be an artifact of their relatively low availability to sampling. A warm stanza, as the Bering Sea is currently in, is expected to favor high numbers of NRS juveniles and the northward expansion of their distribution.

Lymphocystis Disease in Yellowfin Sole (Limanda aspera) in the Bering Sea

1977 ◽  
Vol 34 (5) ◽  
pp. 611-616 ◽  
Author(s):  
C. E. Alpers ◽  
B. B. McCain ◽  
M. S. Myers ◽  
S. R. Wellings
Keyword(s):  
Virus Infection ◽  
Bering Sea ◽  
Fish Disease ◽  
Electron Microscopic ◽  
Virus Particles ◽  
Lymphocystis Disease ◽  
Microscopic Studies ◽  
Yellowfin Sole ◽  
Limanda Aspera ◽  
The Bering Sea

A study to determine the prevalence of fish disease in the Bering Sea revealed lymphocystis disease in yellowfin sole (Limanda aspera). The gross pathology and histopathology of typical nodules are described. Electron microscopic studies revealed characteristic icosahedral lymphocystis virus particles, as well as clusters of intracellular structures of uncertain origin. This study begins a larger effort to understand the effects of an altered marine environment upon the biology of lymphocystis virus infection in the Bering Sea. Key words: lymphocystis, pleuronectids, yellowfin sole, Bering Sea, flatfish.

Availability of yellowfin sole Limanda aspera to the eastern Bering Sea trawl survey and its effect on estimates of survey biomass

2019 ◽  
Vol 211 ◽  
pp. 319-330 ◽  
Author(s):  
Daniel G. Nichol ◽  
Stan Kotwicki ◽  
Thomas K. Wilderbuer ◽  
Robert R. Lauth ◽  
James N. Ianelli
Keyword(s):  
Bering Sea ◽  
Trawl Survey ◽  
Eastern Bering Sea ◽  
Yellowfin Sole ◽  
Limanda Aspera

Otolith biochronologies reveal latitudinal differences in growth of Bering Sea yellowfin sole Limanda aspera

Polar Biology ◽  
2016 ◽  
Vol 39 (12) ◽  
pp. 2427-2439 ◽  
Author(s):  
Mary Elizabeth Matta ◽  
Thomas E. Helser ◽  
Bryan A. Black
Keyword(s):  
Bering Sea ◽  
Yellowfin Sole ◽  
Limanda Aspera

Development and Present Status of Bottomfish Resources in the Bering Sea

1973 ◽  
Vol 30 (12) ◽  
pp. 2373-2385 ◽  
Author(s):  
A. T. Pruter
Keyword(s):  
Bering Sea ◽  
North Pacific ◽  
Atlantic Cod ◽  
Early Period ◽  
The North ◽  
The Pacific ◽  
The Pacific Ocean ◽  
Yellowfin Sole ◽  
The North Pacific ◽  
The Bering Sea

Fisheries for bottomfish in the Bering Sea are largely a post-second world war development, with landings having increased from 13,000 metric tons in 1954 to an estimated 2 million metric tons in 1971. Most of the harvest is off Alaska in the southeastern sector of the Bering Sea, where conditions are most favorable for development of resources and fisheries. In 1970 and 1971, Japan accounted for approximately 84% and the USSR 15% of the combined harvest by all nations. South Korea, United States, and Canada took the remaining 1% of the harvest. Initial target of the fisheries of Japan and USSR was yellowfin sole. Yields of yellowfin sole were not sustained and Japan shifted attention to Alaska pollock. Production of Alaska pollock in 1970 from the North Pacific (about half is from the Bering Sea) was tied with Atlantic cod for second place in worldwide landings of a single species.Analysis of condition of resources is handicapped by unavailability of adequate statistics for earlier years of the fishery. Even for those participants who provided detailed statistics, information is usually lacking on quantities offish discarded, and changes in fishing gear and fishing tactics that need to be corrected for in assessing the condition of stocks. There is no institutional mechanism for Bering Sea or the North Pacific that makes it mandatory for all nations to provide common and comprehensive statistics on their fisheries and to undertake joint management.Consideration of available data suggests that the pulse nature of the Bering Sea fisheries resulted in the depletion of several important resources. Yellowfin sole were overfished during the early period of the fishery. Although the picture is far from clear for other species, the Pacific Ocean perch, blackcod, and shrimp resources also appear to have been overfished at least on certain important grounds within the Bering Sea. The chronology of Japan’s fishery for herring suggests the initial exploitation of the stock in the western Bering Sea off Asia may have been intense enough to deplete that resource. Although there is yet no indication of depletion of Alaska pollock, the great increase in harvest of that species, coupled with reliance on a few year classes to support the fishery, should serve as a warning against further uncontrolled increases in fishing.

A Cost-Benefit Method for Determining Optimum Closed Fishing Areas to Reduce the Trawl Catch of Prohibited Species

1984 ◽  
Vol 41 (1) ◽  
pp. 93-98 ◽  
Author(s):  
David A. Somerton ◽  
Jeffrey June
Keyword(s):  
Bering Sea ◽  
Cost Benefit ◽  
King Crab ◽  
Research Survey ◽  
Eastern Bering Sea ◽  
Yellowfin Sole ◽  
Survey Estimates ◽  
Paralithodes Camtschatica ◽  
Limanda Aspera ◽  
Trawl Fisheries

Red king crab (Paralithodes camtschatica), a prohibited species, are incidentally caught by United States trawl fisheries for yellowfin sole (Limanda aspera) and other groundfish in the eastern Bering Sea. To reduce this incidental catch, we propose a method for determining a king crab conservation zone where trawling would be prohibited. This method considers the gross revenue potentially gained by the yellowfin sole fishery and lost by the king crab fishery by allowing trawling in each of a number of equal-size areas. Utilizing exvessel prices and research survey estimates of species densities, areas are assigned relative values equal to the value of groundfish minus the value of king crab. By including all areas with negative relative values in the conservation zone, the potential gross revenue that could be obtained from the groundfish and king crab resource is maximized.

scholarly journals Long-term dynamics and current state of yellowfin sole Limanda aspera stocks in the waters of Sakhalin Island

2014 ◽  
Vol 178 (3) ◽  
pp. 25-57
Author(s):  
Alexander O. Zolotov ◽  
Alexander V. Smirnov ◽  
Lev N. Baranchuk-Chervonny ◽  
Anna Yu. Dubinina
Keyword(s):  
Bering Sea ◽  
Sakhalin Island ◽  
Secondary Importance ◽  
The North ◽  
Current State ◽  
Large Populations ◽  
Yellowfin Sole ◽  
Limanda Aspera ◽  
The North Pacific

Commercial stocks of two yellowfin sole populations on the western and eastern shelves of Sakhalin Island are assessed by VPA method using the data on their size-age structure and fishery statistics for 1950-2013. Results of the assessment are compared with the data of bottom trawl surveys conducted in 2000-2013. The yellowfin sole at Sakhalin Island had two periods of high abundance: in the 1950-1960s and in the 1985-1995, but its stocks decreased in the 1970-1980 and after the middle 1990s. This dynamics is similar to the dynamics of other large populations of yellowfin sole in the North Pacific - in the southeastern and western Bering Sea and on the shelf of West Kamchatka. All these changes are caused by natural reasons; fishery has secondary importance and affects on the populations in times of low stock only.

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