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

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.

2019 ◽  
Vol 77 (3) ◽  
pp. 953-963
Author(s):  
Cynthia Yeung ◽  
Daniel W Cooper

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.


2019 ◽  
Vol 211 ◽  
pp. 319-330 ◽  
Author(s):  
Daniel G. Nichol ◽  
Stan Kotwicki ◽  
Thomas K. Wilderbuer ◽  
Robert R. Lauth ◽  
James N. Ianelli

1977 ◽  
Vol 298 (1 Aquatic Pollu) ◽  
pp. 290-304 ◽  
Author(s):  
S. R. Wellings ◽  
Charles E. Alpers ◽  
Bruce B. McCain ◽  
Mark S. Myers

Author(s):  
H. C. Chopra ◽  
G. Schidlovsky ◽  
T. McBride

Lymphocytic leukemia L1210 was orignially induced in female DBA mice by painting the skin surface with 0.2% methylcholanthrene in ethyl ether. It is continuously passed in DBA, C57bl/c and BDF mice by inoculating ascites cells intraperitoneally, intramuscularly or subcutaneously. It is commonly used for biochemical studies as well as for assays of chemotherapeutic agents.Our electron microscopic studies demonstrated a virus with morphological characteristics peculiar to both type B and C virus particles. Cells of ascitic fluids, spleen, lymph nodes, thymus and bone marrow of leukemic mice revealed the presence of groups of intracytoplasmic A particles (Fig. 1) identical to those seen in mouse mammary tumors. Some cells also revealed intracisternal A particles identical to those in plasma cell tumors.


Polar Biology ◽  
2016 ◽  
Vol 39 (12) ◽  
pp. 2427-2439 ◽  
Author(s):  
Mary Elizabeth Matta ◽  
Thomas E. Helser ◽  
Bryan A. Black

Sign in / Sign up

Export Citation Format

Share Document