The Cortisol Levels, Histology, and Fine Structure of Various Tissues of Fish (Baird and Girard, 1853) after Exposure to Lead.

Background: Aquatic organisms demonstrate a high vulnerability to mortality when exposed to Pb, even at low concentrations. The objective of this investigation is to ascertain the histopathological alterations and cortisol concentrations in diverse tissues of , with a specific focus on the eggs and larvae, following exposure to varying concentrations of PbCl.

Methods: Adult specimens of measuring 5-6 cm in length were obtained from a commercial fish breeding facility.

Glucose Sensing Using Capacitive Biosensor Based on Polyvinylidene Fluoride Thin Film.

A polyvinylidene fluoride (PVDF) film-based capacitive biosensor was developed for glucose sensing. This device consists of a PVDF film sandwiched between two electrodes. A capacitive biosensor measures the dielectric properties of the dielectric layers at the interface between the electrolyte and the electrode.

Isolation and molecular identification of the etiological agents of streptococcosis in Nile tilapia (Oreochromis niloticus) cultured in net cages in Lake Sentani, Papua, Indonesia.

Infections with Streptococcus spp. were observed in Nile tilapia cultured in net cages in Lake Sentani, Papua, Indonesia. Clinical signs included exophthalmia, erratic swimming, ascites in abdominal cavity, and external hemorrhages.