Dietary and nondietary accumulation of waterborne zinc (Zn) by shell of abalone Haliotis diversicolor supertexta was studied to determine if abalone shell can accumulate and eliminate Zn biokinetically. Shell of H. diversicolor supertexta rapidly accumulated Zn at microgram per gram concentrations during a 7-d uptake period for dietary and nondietary exposure to 1 microgml(-1) Zn seawater. Depu...

Random amplified polymorphic DNA (RAPD) with universal rice primers (URP) was used to identify species and to determine phylogenetic relationships for the 6 economically important Korean Pacific abalone species: Haliotis discus hannai, H. discus discus, H. madaka, H. gigantea, H. diversicolor supertexta, and H. diversicolor diversicolor, whose morphological differentiation is difficult. Of the ...

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...

The susceptibility of the small abalone Haliotis diversicolor supertexta to Vibrio parahaemolyticus 880915 strain and its extracellular products (ECP) at different temperatures was investigated. The strain was previously isolated from the haemolymph of the moribund small abalone with withering syndrome during an outbreak of mass mortality among the cultured animals in September 1999 in I-Lan, T...

A dynamic model that links biokinetics and consumer-resource dynamics for describing zinc (Zn) accumulation in abalone Haliotis diversicolor supertexta has been developed and then applied to Zn data from real abalone farms. The biokinetic parameters used in this study, uptake and depuration rate constants of abalone and their food source, red alga Gracilaria tenuistipitata var. liui, were obtai...

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...