When disoriented in a closed rectangular tank, fish (Xenotoca eiseni) reoriented in accord with the large-scale shape of the environment, but they were also able to conjoin geometric information with nongeometric properties such as the color of a wall or the features provided by panels located at the corners of the tank. Fish encoded geometric information even when featural information sufficed...

Present study was designed and an attempt has been made to study the Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray spectroscopy (EDAX) of fish of genus Puntius from Uttarakhand. Puntius conchonius and Puntius sophore (Spotted barbs) in the fast flowing water of Song River. The body of the fish in laterally compressed and is covered over by numerous small scales. The number of l...

Aquaculture is currently responsible for an insignificant proportion of total fish production in Uganda. However, given increasing demand for fresh fish in urban and peri-urban areas, and threats to the supply of fish from natural catch fisheries there seems to be a potentially strong market for fish and fish products produced by aquaculturalists. Small-scale fish farmers that are relatively cl...

In this study, fishes and habitat attributes were quantified, four times over 1 year, on three reefs within four regions encompassing a c. 6° latitudinal gradient across south-western Australia. The variability observed was partitioned at these spatio-temporal scales in relation to reef fish variables and the influence of environmental drivers quantified at local scales, i.e. at the scale of re...

Behavioral lateralization has been documented in many vertebrates. The scale-eating cichlid fish Perissodus microlepis is well known for exhibiting lateral dimorphism in its mouth morphology and lateralized behavior in robbing scales from prey fish. A previous field study indicated that this mouth asymmetry closely correlates with the side on which prey is attacked, but details of this species'...

To examine the relationship between activated-sludge bulking and levels of specific filamentous bacteria, we developed a statistics-based quantification method for estimating the biomass levels of specific filaments using 16S rRNA-targeted fluorescent in situ hybridization (FISH) probes. The results of quantitative FISH for the filament Sphaerotilus natans were similar to the results of quantit...

Quantum dots (QDs) are a novel class of inorganic fluorochromes composed of nanometer-scale crystals made of a semiconductor material. They are resistant to photo-bleaching, have narrow excitation and emission wavelengths that can be controlled by particle size and thus have the potential for multiplexing experiments. Given the remarkable optical properties that quantum dots possess, they have ...

Under cold acclimated conditions, goldfish (Carassius auratus) express an interlamellar cell mass (ILCM) which limits diffusive ion loss but may also impede branchial ammonia excretion (J(amm)). In the present study, goldfish were subjected to a 2-week 5 or 25 °C acclimation in order to modulate the degree of ILCM gill coverage and determine potential effects on J(amm). 25 °C-fish displayed gil...

The occurrences of Caligus sclerotinosus, a parasitic copepod on cultured red sea bream Pagrus major, were surveyed in fish farms and the phototaxis of adult caligid was experimentaly examined. The parasite infection occurred from April to December, in which up to approximately 500 caligids infected the external surface of each diseased fish, covering the whole body surface, eyes and fins. The ...

BACKGROUND Growing evidence indicates that fish oil-containing lipid emulsions have a beneficial effect on parenteral nutrition-associated cholestasis (PNAC) in adults; however, data are limited in neonates regarding the effect of fish oil on PNAC. OBJECTIVE We conducted a meta-analysis of studies that addressed the effect of fish oil-containing lipid emulsions on reversing and preventing PNA...