Fin Erosion Disease of Starry Flounder (Platichthys stellatus) and English Sole (Parophrys vetulus) in the Estuary of the Duwamish River, Seattle, Washington

1976 ◽  
Vol 33 (11) ◽  
pp. 2577-2586 ◽  
Author(s):  
S. R. Wellings ◽  
C. E. Alpers ◽  
B. B. McCain ◽  
B. S. Miller
Keyword(s):  
Chronic Inflammation ◽  
Environmental Variables ◽  
Genetic Constitution ◽  
English Sole ◽  
Functional Surface ◽  
Starry Flounder ◽  
Platichthys Stellatus ◽  
Chemical Pollutants ◽  
Fin Rays ◽  
Parophrys Vetulus

Fin erosion in the starry flounder (Platichthys stellatus) and English sole (Parophrys vetulus) of the Duwamish River, Washington, is characterized by ulcerating chronic inflammation and fibrosis with resorption of fin rays. The end result is deformation, shortening, and retraction of residual fin tissue with loss of functional surface. We suggest that the incidence of fin erosion in a particular population is related to an interaction between genetic constitution and multiple environmental variables, including a variety of chemical pollutants.

Daily Growth Increments in Otoliths of Starry Flounder (Platichthys stellatus) and the Influence of Some Environmental Variables in Their Production

1982 ◽  
Vol 39 (7) ◽  
pp. 937-942 ◽  
Author(s):  
Steven E. Campana ◽  
John D. Neilson
Keyword(s):  
Environmental Conditions ◽  
Environmental Variables ◽  
Daily Basis ◽  
Otolith Growth ◽  
Daily Growth ◽  
Environmental Regime ◽  
Starry Flounder ◽  
Daily Increments ◽  
Growth Increments ◽  
Platichthys Stellatus

Tetracycline injected into juvenile starry flounders (Platichthys stellatus) was incorporated into the periphery of the sagittal otoliths within 24 h. The resulting band, visible under ultraviolet light, was used as a dated mark on the otolith growth increments. This technique was used to verify that increments were laid down on a daily basis, both in field and laboratory environments. Subdaily increments were visible in otoliths of fishes reared under most environmental conditions. The production of daily increments in juvenile starry flounders preconditioned to a natural environmental regime was unaffected by photoperiod or temperature fluctuation, suggesting the presence of an internal circadian rhythm.Key words: starry flounder, Platichthys stellatus; otoliths, daily rings, growth increments, circadian, tetracycline

A Comparison of Skin Tumors in Three Species of Flounders

1971 ◽  
Vol 28 (9) ◽  
pp. 1241-1251 ◽  
Author(s):  
G. E. McArn ◽  
S. R. Wellings
Keyword(s):  
Age Groups ◽  
Skin Tumors ◽  
Single Specimen ◽  
English Sole ◽  
Tumor Bearing ◽  
Platichthys Stellatus ◽  
Similar Disease ◽  
History Of ◽  
Hippoglossoides Elassodon ◽  
Parophrys Vetulus

A study of the natural history of skin tumors occurring on two species of Pleuronectidae was conducted in the waters of Bellingham Bay, Washington. Twelve collections at monthly intervals indicated that 4.8% of 1977 English sole (Parophrys vetulus) and 2.4% of 2946 starry flounders (Platichthys stellatus) were tumorous. Three types of tumors were observed, and were classified as angioepithelial nodules, epidermal papillomas, or angioepithelial polyps, according to nomenclature previously established by other workers. The angioepithelial nodule was found on fish in the 1st year of life but not on fish older than 1 year. Epidermal papillomas usually occurred on fish that were 1 year or older, as did the angioepithelial polyps. The incidence of tumor-bearing fish, and the average number of tumors on a single specimen was greatest during the 1st year of life and decreased progressively in older age-groups. Tumors were more likely to occur on the pigmented side than on the nonpigmented side of the fish. The results of this study were compared and contrasted with a similar disease previously described on Hippoglossoides elassodon, the flathead sole.

Effects of toxicant exposure on reproductive success of female English sole (Parophrys vetulus) from Puget Sound, Washington

1988 ◽  
Vol 11 (3-4) ◽  
pp. 435-436 ◽  
Author(s):  
L.L. Johnson ◽  
E. Casillas ◽  
D. Misitano ◽  
B.B. McCain ◽  
M.S. Myers ◽  
...  
Keyword(s):  
Reproductive Success ◽  
Puget Sound ◽  
English Sole ◽  
Toxicant Exposure ◽  
Parophrys Vetulus

Formation and persistence of benzo[a]pyrene-diolepoxide-DNA adducts in liver of English sole (Parophrys vetulus)

1989 ◽  
Vol 69 (2-3) ◽  
pp. 203-216 ◽  
Author(s):  
Usha Varanasi ◽  
William L. Reichert ◽  
Bich-Thuy Le Eberhart ◽  
John E. Stein
Keyword(s):  
Dna Adducts ◽  
English Sole ◽  
Parophrys Vetulus
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