in fish propagation and aquaculture industry, egg incubation period up to hatching is the most critical time. there is scarce information about events happening during this period for caspian kutum, which is a very economically important endemic fish in the caspian sea. morphological and histologial developmental changes of caspian kutum eggs and embryo up to hatching were investigated. develop...

  Fungal infection in the eggs of freshwater fish is well known as a problematic disease. The aim of the present study was to isolate and identify parasitic and saprophytic fungi from affected eggs of rainbow trout at two fish hatchery in Kermanshah province. The sample were inoculated in culture media (SDA,CMA,GPA and stilled water with cotton seed culture) at room temperature (18-24 ° C).17 s...

Kutum, Rutilus frisii kutum, is an commercially important fish in the Caspian Sea. The fish enters the rivers leading to the Caspian Sea for spawning. One of these rivers is Shiroud River. In the artificial propagation process of Kutum, different factors are involved in quality and quantity of female broods eggs and also in the best temperature and migration time for spawning. The influence of ...

kutum, rutilus frisii kutum, is an commercially important fish in the caspian sea. the fish enters the rivers leading to the caspian sea for spawning. one of these rivers is shiroud river. in the artificial propagation process of kutum, different factors are involved in quality and quantity of female broods eggs and also in the best temperature and migration time for spawning. the influence of ...

Cleaner organisms exhibit a remarkable natural behaviour where they consume ectoparasites attached to "client" organisms. While this behaviour can be utilized as a natural method of parasitic disease control (or biocontrol), it is not known whether cleaner organisms can also limit reinfection from parasite eggs and larvae within the environment. Here we show that cleaner shrimp, Lysmata amboine...

Walleye (Sander vitreus) provide important recreational and commercial fisheries throughout the United States and Canada. In Colorado, more walleye are stocked every year than any other species of fish. Use of sterile triploid fish in Colorado is an important management strategy for protecting native endangered fish species from naturally reproducing populations of introduced predators like wal...

Preliminary trials were undertaken to determine which of three baits (fish-based catfood, hen eggs, and dead mice) commonly used to catch stoats (Mustela erminea) was the most attractive. All six stoats ate eggs and mice significantly more often than catfood. Combining results from both sexes, there was no significant preference between eggs and mice; when results were divided by sex however, f...

Summa y and Cmlusions The losses of nutrients in the cooking and plate waste of milk, eggs, fish and meat and the losses in the storage and preparation of vegctables have been studied. Records are presented also of waste in school and other canteens. Scrambling is the most wasteful method of cooking eggs. Thermostatically controlled panv would reduce the waste in cooking eggs. The filleting of ...