Background: Fish have been at high risk of atrazine toxicity. Comparative atrazine toxicity on the tissues of Clarias gariepinus is scanty. Therefore, acute and chronic effects of atrazine on some biochemical parameters in Clarias gariepinus were investigated in this study. Methods: Atrazine toxicity was determined by assessing the responses of glucose, protein, alanine aminotransferase (ALT...

Personal care products (PCPs) are among the most commonly detected compounds in surface water. PCPs have used large amount of metal and metal oxide nanoparticles (NPs). In the present study an attempt was made to study the bioaccumulation and biochemical constituents changes in gill tissues of a freshwater fish labeo rohita exposed to metal and metal oxide nanoparticles in domestic wastewater c...

The fresh water fish Rasbora daniconius were exposed to two sublethal concentration of sugar factory effluent for 4 weeks studied. The concentration were record 1/5(2.2%) and 1/10(1.1%) of the 96 hrs LC 5O values of sugar factory effluent. The gills of R. daniconius showed the curling and degeneration and breaking of epithelium cells of the secondary gill lamellae, destruction of blood cells, b...

The gill withdrawal reflex of the marine mollusk, Ap&u californica, shows habituation and sensitization, two simple forms of learning. In order to extend the cellular studies on synaptic plasticity underlying the changes in the reflex behavior, and to explore further the development of synaptic plasticity during synapse formation, we have sought to establish the neural circuit of the gill withd...

Microhabitat preference of the monogenean Discocotyle sagittata (Leuckart, 1842) was determined in late spring and late autumn in rainbow trout, Oncorhynchus mykiss (Walbaum), reared in the Isle of Man, U.K. Discocotyle sagittata exhibits a preference for attachment to anterior gill arches: 29% of all worms occurred on gill arch I, 28% on II, 25% on III and 18% on IV. This distribution pattern ...

22 Dupont, G. P., IIuecksteadt, T. P., Marshall, B. C., Ryan, U. S., Michael, J. R. and Iloidal, J. R. (1992) J. Clin. Invest. 89, 197-202 Burdon, R. H., Alliangana, D. and Gill, V. (1995) Free Radic. Res. 23, 471-486 24 Burdon, R. €I. and Gill, V. (1993) Free Radic. Res. Commun. 19,203-213 25 Burdon, R. H., Gill, V. and Rice-Evans, C. (1991) in Oxidative Damage and Repair (Davies, K. J. A., ed...

A tactile stimulus to the siphon of Aplysia produces a defensive withdrawal reflex consisting of contraction of the siphon, the gill, and the mantle shelf. We studied long-term habituation of this reflex using two types of preparations, one focusing on the siphon component and the other on the gill component of the reflex. Siphon withdrawal, studied in unrestrained animals, showed marked habitu...

BUR[;(;RE"I, W. W., B. R. McMAHON, and J. W. COSTEIl.TON. 1974. Branchial waterand blood­ flow patterns and the structure of the gill of the crayfish Procambarus clarkii. Can. J. Zool, 52: 15111518. Water flow within the branchial chamber, blood flow within the gill filaments, and the line str.ucture of t~~ gill epithelium have been determined In the crayfish Procambarus clarkii. The epithelium...

Cage-cultured sutchi catfish Pangasius hypophthalmus (Sauvage, 1878), a favourite food fish in Southeast Asia, proved to be infected by 6 myxozoan species. Three species belonged to the genus Hennegoides (H. berlandi, H. malayensis, and H. pangasii), 1 to Henneguya (H. shariffi) and 2 to Myxobolus (M. baskai, and M. pangasii). Five myxozoans infected the gills and 1 was found on the spleen. Myx...

1. Defensive inking behavior and gill withdrawal in ApIysia offer simple test systems in which the cellular and biophysial determinants of elementary behavioral acts can be examined. Since a good deal is known regarding both the behaviors and their underlying neural circuits, it is possible to compare directly these two defensive reflexes at the cellular level. 2. Both the ink and gill motor ne...