in this study, the effect of short-terms starvation (0, 2, 4 and 8 days) on plasma cortisol, glucose, triglyceride and cholesterol levels and also hepatosomatic index in siberian sturgeon, acipenser baerii, was investigated. after acclimation to experimental conditions for 10 days using formulated diet, 180 juvenile siberian sturgeons (mean weight ? s.e.=19.3?0.4, n=15) were randomly distribute...

The necessity for tuna products in the world community continues to increase, while production relies only on catching, thus causing overfishing. Therefore, breeding technology support farming is fundamental be developed. Yellowfin Indonesia has been successful cultivating broodstock. This paper discusses biometric data that changes during cultivation, such as condition factor, hepato and gonad...

The freshwater crayfish Cherax quadricarinatus is a tropical species of great interest for aquaculture. Vitellogenin (Vg), a lipoprotein precursor of the vitellum accumulated in spawned eggs, can be synthesized in the ovary and/or hepatopancreas of most crustaceans, being the hemolymph the way for transporting Vg throughout the reproductive cycle. Concentration of Vg in hemolymph, ovary and hep...

We analyzed the dietary copper effects in the estuarine crab Neohelice (Chasmagnathus) granulata and its interaction with water salinity. Crabs were maintained at 2 per thousand and 30 per thousand salinity for 5 weeks and they were fed with commercial food supplemented with the green alga Scenedesmus vacuolatus previously exposed to copper. No mortalities were observed, but crabs maintained at...

Sanders, Kathryn E. M.S., Purdue University, May 2012. Relative Importance of Water Quality and Habitat to Fish Communities in Streams Influenced by Agricultural Land Use in the Cedar Creek Watershed, Indiana. Major Professor: Robert B. Gillespie. Agricultural land use has been shown to negatively impact fish communities in headwater streams that also serve as agricultural drainage ditches. The...

The aim of this work was to study the oxidative stress effects and histological alterations caused by dietary copper on the filter-feeding freshwater mussel Diplodon chilensis. Bivalves were fed during 6 weeks with the green algae Scenedesmus vacuolatus previously exposed to copper. Metal concentration in algae cultures and bivalve digestive gland was measured by TXRF. A maximum accumulation of...

Prediction of the movement of stock market is a long-time attractive topic to researchers from different fields. The Hang Seng Index (abbreviated: HSI) is a free float-adjusted market capitalization-weighted stock market index in Hong Kong. We believe the HSI is influenced by other major financial indexes across the world and try different machine learning method to get a prediction based on th...

some biological characteristics and population dynamic of platycephalus indicus were studied during one year from may 2011 to march 2012 in the coastal waters of bandar abbas. a total of 1106 samples were collected. also, each month 35 fish was choosen and transferred to the laboratory for evaluation of spawning season.the ages of 279 specimens were determined by sectioned otoliths. the ages of...