background and objectives: staphylococcal food poisoning is a gastrointestinal disease, which is caused by consumption of contaminated food with enterotoxins produced by staphylococcus aureus (ses). milk and its products are known sources of food borne diseases. this study was carried out to evaluate the prevalence of enterotoxigenic s. aureus strains in organic milk and cheese in tabriz - iran...

MICHAEL L. JAHNCKE,1* ROBERT COLLETTE,2 DORIS HICKS,3 MARTIN WIEDMANN,4 VIRGINIA N. SCOTT,5 and KEN GALL6 1Virginia Seafood Agricultural Research and Extension Center, Virginia Sea Grant Program, Hampton, VA 23669, USA; 2National Fisheries Institute, Arlington, VA 22209, USA; 3University of Delaware Sea Grant College Program, Lewes, DE 19958, USA; 4Department of Food Science, Cornell University...

feeding habits of caspian marine shad alosa braschnikowii (borodin, 1904), inhabiting in the western part of caspian sea such as prey spectrum and seasonal dynamics have been studied. as in other parts of caspian sea, throughout the year, the main hunt of caspian marine shad constituted kilkas, gobies and shrimps while other groups of zoobenthos were represented in a lesser extent. importance o...

Although the feeding behavior of the sea· otter, Enhydra lutris, is frequently observed from the surface, few underwater observations of foraging sea otters have been published. Faro (1969) and Houk and Geibel (1974) described the underwater behavior and tool use of sea otters when they removed abalone from rock substrates. Shimek (1977) observed a sea otter foraging for snails and presumably o...

Antarctic krill Euphausia superba spawned on the outer continental shelf of the west Antarctic Peninsula can be entrained into the Southern Front of the Antarctic Circumpolar Current and transported across the Scotia Sea to South Georgia. A time-dependent, size-structured, physiologically based krill growth model was used to assess the food resources that are needed to sustain Antarctic krill d...

Most deep-sea benthic ecosystems are food limited and, in the majority of cases, are driven by the organic matter falling from the surface or advected downslope. Species may adapt to this scarceness by applying a wide variety of responses, such as feeding specialisation, niche width variation, and reduction in metabolic rates. The Mediterranean Sea hosts a gradient of food availability at the d...

The present study was aimed to identify the frequency of coagulase (Coa) and thermonuclease (Nuc) genes and Staphylococcal enterotoxin A (Sea) production among Staphylococcus aureus isolated from various sources in Shiraz. Moreover, the correlation between the Sea gene and coagulase and thermonuclease enzymes is also considered. A total of 100 S. aureus were isolated from various sources includ...

mnemiopsis leidyi population activities first were recorded during the coastal observations in 2001 in which its population considerably increased afterward and now sustained the southern caspian sea. maximum summer-autumn m. leidyi abundance was recorded in euphotic layer in 2002 (851±85 ind.m-3) and maximum biomass was in 2001 with 48.1±14.4 g.m-3) while minimum were in aphotic layer. in year...