OBJECTIVE On a global scale, stratospheric ozone depletion has caused an increase in UV-B radiation reaching the earth's surface. Ultraviolet radiation has long been suspected to be harmful to aquatic organisms. MATERIALS AND METHODS In order to study ionocyte localization (by Na(+)/K(+)-ATPase immunolocalization) and the effects of UV radiation on the ionocytes of skin and gills, the alevins...

Fisheries management relies on accurate population models for estimating biomass and setting harvest goals; however, physiological data reproductive parameters in are difficult to acquire. Here, lifetime (progesterone estradiol) stress-related (cortisol) hormones were measured annually deposited growth increments female yelloweye rockfish ( Sebastes ruberrimus) opercula N = 22 females, sampled ...

objective: on a global scale, stratospheric ozone depletion has caused an increase in uv-b radiation reaching the earth's surface. ultraviolet radiation has long been suspected to be harmful to aquatic organisms. materials and methods: in order to study ionocyte localization (by na+/k+-atpase immunolocalization) and the effects of uv radiation on the ionocytes of skin and gills, the alevins of ...

Hyoliths, known globally from the Cambrian to Permian are generally recognized as early lophotrochozoan animals of uncertain phylogenetic position. The calcareous exoskeleton hyolithids, one two subgroups hyoliths, consist four elements including a conical conch, an external operculum, and pair curved enigmatic helens, but their ecology internal morphology have long been considered controversia...

Diazinon (DZN) is a widely used pesticide that can affect the vital organs of non-target aquatic animals—mainly fish. This study evaluated acute toxicity (LC50) six DZN concentrations (0.5, 0.75, 1.5, 2, 2.5, and 3 mg·L−1) and, based on its evaluation after 24 h, 48 72 96 two sublethal for chronic testing (0.01 0.05 21 days exposure to grass carp fingerlings (Ctenopharyngodon idella Valencienne...

We describe the case of a middle-aged Chinese migrant with background metastatic hepatocellular carcinoma (HCC) who was found to have parasitic perihepatic fluid collection masquerading as malignant collection. The aspirate this showed no organisms on gram stain negative cultures. A smear and cell block for cytology moderate bile, debris, proteinaceous material occasional macrophages. No cells ...

A public trout hatchery in Colorado recorded repeat episodes of morbidity and mortality early life stages Rainbow Trout (Oncorhynchus mykiss) stocks. The water source for the affected tanks is a groundwater well with pH 6.3 ferrous iron concentration 120 µg/L. Iron oxidizing bacteria (FeOB) were suspected as underlying cause due to insoluble red particulate matter (iron oxide precipitate) water...