Some cestodes from Florida sharks

Mercury levels in Florida sharks

The larval tapeworms (Cestodes: Trypanorhyncha) isolated from some commercially important fish of Persian Gulf

A total of 180 fish samples from three commercially important teleosts (Epinephelus coioides, Euthynnus affinis and Thunnus tonggol fish) of Persian Gulf across Hormozgan coast were investigated for plerocercoid infestation, which were sampled from Jun 2017 to September 2017. The parasites were fixed, stained, mounted on to slides and identified. Epinephelus coioides was not infested. Following...

Mercury levels in four species of sharks from the Atlantic coast of Florida

Florida’s commercial and recreational shark landings represent a significant portion of the total U.S. Atlantic shark landings (NMFS, 1993). Shark landings have increased significantly during the past decade because human consumption of shark meat has become increasingly acceptable and because, in Asian markets, the demand for shark fins is very high— as are the prices paid for them (NMFS, 1993...

Mercury accumulation in sharks from the coastal waters of southwest Florida.

As large long-lived predators, sharks are particularly vulnerable to exposure to methylmercury biomagnified through the marine food web. Accordingly, nonlethal means were used to collect tissues for determining mercury (Hg) concentrations and stable isotopes of carbon (δ(13)C) and nitrogen (δ(15)N) from a total of 69 sharks, comprising 7 species, caught off Southwest Florida from May 2010 throu...

Cestodes of cestodes of Peruvian freshwater stingrays.

Adult tetraphyllidean tapeworms (Platyhelminthes: Eucestoda) from the spiral intestines of 3 species of potamotrygonid stingrays (Paratrygon aiereba, Potamotrygon castexi, and Portamotrygon motoro) in the Madre de Dios river in Peru were found to host numerous cysts embedded in their parenchymal tissues. Histological sections of the cysts revealed the presence of a scolex bearing 4 suckers and ...