The Afar region is characterized by an arid and semi-arid climate with erratic rainfall prone to frequent droughts despite being endowed fresh saline water bodies along the Awash River Basin. Lake Hertale one of those located in middle Valley. lake's fishery presumed not have been exploited before. study attempted describe some physico-chemical parameters, fish species composition, estimate pro...

We addressed the question of bottom-up versus top-down control of marine ecosystem trophic interactions by using annual fish catch data and satellite-derived (SeaWiFS) chlorophyll a measurements for the continental margin of western North America. Findings reveal a marked alongshore variation in retained primary production that is highly correlated with the alongshore variation in resident fish...

The lateral line system allows a fish to respond to changes in its surroundings by detecting flow stimuli. The velocity, acceleration, pressure gradient, and shear stress of water at the surface of a fish may all serve as stimuli that yield cues about environmental change. All of these stimuli are governed by hydrodynamics. Therefore, an application of hydrodynamic principles offers insight int...

Accurate prediction of meat yield in live animals may allow more efficient genetic improvement of meat yield in farm-raised catfish. An initial trial with 30 channel catfish demonstrated significant correlations among weight-adjusted residuals for muscle area measured from transverse ultrasound images and transverse sections at five locations along the trunk musculature (r = 0.30 to 0.70). Rela...

Acoupa weakfish, Cynoscion acoupa, in Lake Maracaibo is subject to intense commercial fishing by an artisanal fleet, and a recent decrease in fish size observed from landings is of concern. This fishery has not yet been modeled, and its assessment and the establishment of management practices to overcome the current overfished condition are urgently needed. To address this, we used recent and p...

The aim of the study was to compare the effects of two different salting procedures on salt uptake, protein and moisture content, water activity (aw) weight yield, colour and quality of herring fillets. One group of herring fillets was brined with 20% brine solution for one day before dry salting while another group was dry salted only. After 27 days of salting, the fillets were desalted. Sampl...

Vesicular stomatitis virus glycoprotein G-pseudotyped mouse retroviral vectors have been used as mutagens for a large-scale insertional mutagenesis screen in the zebra fish. To reproducibly generate high-titer virus stocks, we devised a method for rapidly selecting cell lines that can yield high-titer viruses and isolated a producer cell line that yields virus at a high titer on zebra fish embr...

Overfishing can lead to the reduction or elimination of fish populations and the degradation or even destruction of their habitats. This can be prevented by introducing Marine Protected Areas (MPA’s), regions in the ocean or along coastlines where fishing is controlled. MPA’s can also lead to larger fish densities outside the protected area through spill-over, which in turn may increase the fis...

commercial utilization of black mouth croaker (atrobucca nibe) is in progress in iran. this study was carried out to assess the physicochemical and sensory evaluation of minced fish and surimi prepared from small size of a. nibe, which is not common for human consumption. the surimi proximate composition contains protein (14.77±0.506%), lipid (0.94±0.081%), ash (0.58±0.007%) contents and yield ...

Mullon et al. (2004) proposed a dynamical model of biomass evolution in the Southern Benguela ecosystem, including five different groups (detritus, phytoplankton, zooplankton, pelagic fish and demersal fish). They studied this model in a viability perspective, trying to assess, for a given constant yield, whether each species biomass remains inside a given interval, taking into account the unce...