The first step of the dissecting process was to place the fish on the dissecting board to prevent damage to the counter top. The first incision was made using scissors between the anal and pectoral fins. Two parallel vertical incisions were then made, followed by a horizontal cut on the dorsal side of the fish in order to remove the fillet. When making the incisions, one must be careful not to cut to deep and damage the internal organs. After the fillet has been removed, the ribs can be observed.
The Biotope Aquarium Explained In a biotope aquarium, the aquarist attempt to simulate a natural habitat, assembling fish species, plants, water chemistry and decorations found in that specific ecosystem. A “true” biotope should be a mirror of a natural habitat. There are many good reasons for setting up an aquarium that simulates a natural habitat. Those of us who have done everything, bred everything and kept most fish might simply want a new challenge. Another good reason to setup a biotope aquarium is to see the fish interacting in their “natural” environment which is completely different from what you will see in a community setup.
Introduction First of all, what is Aquaponics? Aquaponics refers to any system that combines conventional aquaculture (raising aquatic animals such as snails, fish, crayfish or prawns in tanks) with hydroponics (cultivating plants in water) in a symbiotic environment. In normal aquaculture, excretions from the animals being raised can accumulate in the water, increasing toxicity. In an aquaponic system, water from an aquaculture system is fed to a hydroponic system where the by-products are broken down by nitrifying bacteria initially into nitrites and subsequently into nitrates, which are utilized by the plants as nutrients, and the water is then recirculated back to the aquaculture system. In short, the plants will provide
The last organism present in the tank is water lettuce, which grows to lengths of up to ten inches and up to four inches wide. Their preferred water conditions are 70-80° F, with a pH of 6.5-7.5 and they can grow to ten inches maximum. Water lettuce helps oxygenate and clarify water and will use the extra organic nutrients in a pond, thereby reducing algae production. These organisms will feed off of each other, with the producers producing oxygen for the other members of the
6.1 Carbon sources and aquaculture systems: Direct energy consumption in intensively managed aquatic farming systems, especially for shrimp and salmon, has been assessed. However, the majority of global aquaculture production is of freshwater finfish from semi-intensively managed ponds in Asia, but audits of the associated direct and indirect energy use are not routine (Stuart and Jules, 2007). Indirect or embodied energy consumption is associated with site development and construction; production, acquisition and supply of inputs; waste handling and disposal; product processing, marketing and distribution. 6.2 Soil, water and waste management: Sediment management in pond-based aquaculture systems can have a significant effect on the accumulation
Eight of which were equidistantly fixed around the wall of the cylindrical drying chamber with connections to a temperature regulator. The dryer was a double walled insulated stainless steel of 2 cm thickness and contained a set of three mesh trays in the drying chamber on which the brined catfish were arranged. The dryer was preheated to the desired temperature while the samples were being prepared to ensure temperature stability when the fish will be introduced. A dry bulb thermometer was hung inside the dryer through the vent at the top to monitor the temperature. The fish were occasionally checked to ensure no case hardening occurred during drying.
the specimen that is being observed is to be seen on a glass slide for example in the investigation of a unicellular organism in the experiment a pond water sample was taken and the sample was then put on the glass slide which was then observed under the light and magnification of the light microscope . moreover the contrast of the microscope has to be set in a certain way that the specimen is clearly visible for this purpose sometimes but actually most of the times stains and special dyes are used in the specimen which is under observation but there was no dye used in the conducted experiment .dyes and stains are usually used to improve the contrast of the specimen and it absorbs the transmitting light and improves the overall observation of the specimen. Different parts of light microscope cooperate and help in the observation of the specimen taken, the light from the microscope that is transmitting on the specimen taken is focused by the condenser lens and then it is collected by the objective lens. The powers are then
Before loading dishes into dishwashing machines and washing pots, items should be soaked and pre-rinsed to remove as much food as possible. Risk factors forceful exertion and awkward bending at the waist when lifting items from soak sinks awkward postures when pre-rinsing Controls Soaking Use false bottoms in deep sinks to reduce awkward bending at the waist. Do
It can be said that environmental conditions play an important role in the formation of gut adherent microbial populations and the type and amount of enzyme production. This could be the reason for differences in the amount of enzymes from the fish guts in unmanaged and managed
So, scientists used genetics to look for plants which can grow in small amounts of salty water. Scientists all across the world are continuously looking to use genetics and hydroponics together to help farmers produce food crops that will feed the world’s population in the years