We quantified the distribution, abundance and assemblage structure of macrofauna at 22 stations in Gorgan bay, seasonally in 2012-2013. Also, depth, temperature, salinity, DO, TOM and sediment particle size were measured in each station. The highest concentration of TOM was measured near the western littoral zone (10.22) while the mouth part and north-eastern area was characterized by the lowes...

The small abalone Haliotis diversicolor is an economically important mollusk that is widely cultivated in Southern China. Gonad precocity may affect the aquaculture of small abalone. Polyamines, which are small cationic molecules essential for cellular proliferation, may affect gonadal development. Ornithine decarboxylase (ODC) and antizyme (AZ) are essential elements of a feedback circuit that...

Organic UV filters are continuously released in aquatic ecosystems due to their widespread use, especially touristic coastal environments. Generally, organic poorly soluble water and tend accumulate the sediment compartment. This represents a conceivable risk for sediment-dwelling organisms potential transfer of up food chain. study aimed assess seven including benzophenone-3 (BP3), bis-ethylhe...

Both 1-hydroxypyrene and 1-hydroxypyrene glucuronide are identified as the primary phase I and phase II metabolites of the four-ringed polycyclic aromatic hydrocarbon (PAH) pyrene in the marine deposit-feeding polychaete Nereis diversicolor. Identification of pyrene and primary metabolites was performed using high-pressure liquid chromatography (HPLC) with diode-array detection and fluorescence...

Polychaetes have often been utilized as indicator species to investigate the impacts of pollutants, such as heavy metals. The uptake of Cd by the polychaete Nereis diversicolor was determined at varying Ca concentrations and with pre-exposure to Ca ion channel blockers and metabolic inhibitors in simulated sea water over 1 week period. The supply of Ca in simulated sea water inhibited Cd uptake...

Although Beadle a9 early as 1937 suggested that the urine of Nereis diversicolor O. F. Miiller might be of lower concentration than the body fluids when this worm is hyperregulating in low salinities, there has been no direct measurement of urine concentration to support this reasonable idea. Jorgensen & Dales (1957) studied osmotic water uptake and loss in N. diversicolor and calculated that t...

Taiwan abalone Haliotis diversicolor supertexta held in 30 parts/per thousand seawater and 26 degrees C were injected with TSB-grown Vibrio parahaemolyticus (1.6 x 10(5)cfu abalone(-1)), and then placed in water containing different concentrations of ammonia-N (un-ionized plus ionized ammonia) at 0.01 mg l(-1) (control), 1.12, 3.22, 5.24 and 10.18 mg l(-1). Mortality of abalone increased direct...

Taiwan abalone Haliotis diversicolor supertexta (13–16 g) were challenged with Vibrio parahaemolyticus at a dose of 2 10 colony-forming units (cfu) abalone 1 previously incubated in TSBmedium for 24 h, then placed in water having concentrations of dissolved oxygen (DO) at 7.70, 5.61, 3.57 and 2.05 mg l . Onset of mortality occurred after 6-h exposure to 2.05 mg l 1 DO, and after 12-h exposure t...