This project is significant because it could help bring about a better understanding of, how UV wave lengths affect the people and the hole in the ozone layer. By determining the effects of UV on Artemia Salina we come closer to alleviating the effects of UV radiation on organisms. In the future this could lead to better UV protection technology. IV: UV exposure in seconds DV: Mortality Rate DV2: Growth Rate it mm/day H1=the UV radiation will kill more Shrimp the longer they are exposed to it. H2=the Artemia are more likely to form defects and some form of stunted growth. N1= The UV will have no effect and there will be no deformities or conditions of any kind on the Artemia Artemia are small crustaceans that live in saline, in-land shores including species like crayfish and brine shrimp. These invertebrates are small, and are generally hard to see in the water, have hard exoskeletons, and little legs that are really hard to see. Males give birth to young through laying cysts, while females produce offspring via live birth, being around since the Triassic period, Pre-historic fish have been sometimes eating Artemia and other times getting picked off by hovering birds. Artemia Salina or Sea Monkeys only go into near shore waters because most salt is far from shore and Artemia can only survive in certain salinity levels making it a little harder to culture in salt tanks. But when saline levels are just right they give peak results in experiments. They have almost no defenses but multiply quickly and are fast swimmers. Artemia also are extremely common in marine shops being used for human or fish food and also for a variety of science projects and has a hefty sale rate, even for how sometimes expensive th... ... middle of paper ... ...now that they’ve hatched, the shells can’t protect them from the UV.) 5. Re-Count the larvae Re-count the larvae exactly the same way as before. The larvae after radiation should have had some form of effect from the UV such as low mean amount, dead larvae, etc… (Note: If you want to re-count again, because you didn’t see an effect, it would be recommended because the UV radiation doesn’t always have instantaneous effects.) Materials List (In order of use) 1 bottle Artemia Salina eggs 4 culture dishes 1 UV lamp 4 500mL. Beakers 4 Air stones/ air pumps 4 Petri dishes 1 Pipette 1 magnifying glass 1 stirring rod Data Analysis Procedure 1. Make a graph representing the number of artemia per .5mL drop when counting artemia. 2. After counting, compare the averages of past countings to the current to find a possible mortality rate.
My predictions for 6.1 were almost exactly what I expected except for one area. I thought that I would have saw an increase for the Chthamalus barnacles on day 2 there were 4 and then on day 14 there were 13. The part that did not met my expectations was I did not see a small decrease in the number of both species towards the end. Only on the first the sample on day 12 t day 4 saw a small decease of 1 individual of each species. But for the second trial there was an increase for each of the species of barnacles fro day 12 to 14. The Chthamalus saw a large increase from 18 to 23. The Semibalanus Saw an increase of 3 to 5.
An abiotic factor affecting growth of T. californicus is the concentration of salinity of the seawater. It can range from 35ppt too much higher salinity concentrations. The concentration of UV radiation also affects t. californicus. They tend to stay in places of low concentration of UV rays when the sun is the strongest.
DPIP will be used to determine the rate at which the cholorplasts are being reduced. The spectrophotometer will establish the wavelength of light that penitrats the chloroplast solution in turn determining the amount of electrons reduced. In the dark reactions, the spectrophotometer will measure the amount of light passing through a darker solution of DPIP and chloroplasts. In the light reactions, the lighter solution, caused by reduction of the chloroplasts, will allow a larger amount of light to pass through to the photocell of the spectrophotometer. Thus, the spectrophotometer will prove wheter the light or dark reactions affect the rate of photosynthesis in chloroplasts. We will also be using a reference solution made of water, phosphate buffer, and active chloroplasts. The purpose of this solution will be used to set the transmittance level for the experiment. The control solution, which is different than the reference solution, is comprised of water, phosphate buffer, and DPIP. It will be used to prove that the three element of the solution do affect the results- it is strictly the chloroplasts that are subjected to the light/dark conditions.
higher survivorship in growth and development among them. The results showed that there were no major alterations in growth and development of the larvae when fed with detritus. The results suggested the potential of detritus as a possible food source for the larvae. This would insignificantly limit the extent of growth and development among the larvae. The study concluded that larvae of Sabellaria cementarium are capable of changing their diet and thus utilizing detritus as a food supply (Qian and Chia, 1990).
In this experiment I will investigate the affect in which the light intensity will have on a plants photosynthesis process. This will be done by measuring the bubbles of oxygen and having a bulb for the light intensity variable.
...ost completely degraded. Some dive deep into the water, like a lionfish, bream, viviparous fishes of the family Scorpaenidae and Lake Baikal in some species can dive to 1000 ~ 4000 meters deep, some often floating in the upper, such as six line fish, and Lake Baikal fishes of the family. The fishes swimming are relatively slow, often hidden, not activities or bury the body in the sand, and the type of six line fish families peace Marmora subfamily is good at swimming. The benthic invertebrates and small swimming creatures for food, Scorpaena peeling phenomenon of periodic feeding, more intense, more times, peeling, sometimes even 1 months dulling 2 times. The reproductive season in spring and early summer, six line fish, and some cottidae in the autumn or early winter reproductive, lion fish, fish and Lake Baikal, some species in late winter or early spring spawning.
The benefit of doing this experiment is to learn which sunscreen best protect human skin from harmful UV ra...
Up until the early 1960s, the people of that generation grew up believe that exposure to the sun was healthy and could be used as potential treatments for ailments like acne, for example. The doctors of the early 20th century even promoted the use of the sun’s ultraviolet rays (UV rays) as a treatment for certain strains of tuberculosis. Little did they know the long run consequences of prolonged exposure to the now-labeled ...
Scientists have performed many different tests and studies to learn more about high exposure to UV. Close observation of cells have shown that sunlight, natural or artificial, can cause mutations or DNA damage in cells. This can lead to further damage which will then be passed down through generations. Another study scientists perform is on animals. Scientist will expose your typical lab animals to UV rays, and this test typically results in skin cancer on the animal. These studies have been performed with UVA, UVB, and UVC, and they have all proven
The ozone layer is the one that protects living things from the pure ultraviolet rays of the sun.
...cations. Many people will find that amount of sunlight they receive has little or no impact on the state of their psoriasis, but in the cases where the light therapy has worked, it seems to reduce the appearance of the lesions greatly. Obviously, the risk of the UV light therapy is the possible threat of skin cancer.
Anyone can attest to the positive effects of sunlight, but it doesn’t just help the plants grow, it is necessary to us as human beings. Its effects go far beyond just brightening your mood or giving you a beautiful day at the beach. The amount of sun we are exposed to can have profound effects. Sunlight is necessary for good mental health. It keeps our hormones balanced, affects our daily motivation, and changes our perspectives on the different aspects of life all together. Furthermore, it has a dramatic effect on us physically by keeping our immune system at its best and giving our bodies essential vitamins that we could not live without. The main point is sunlight has a direct effect on a person’s mental wellbeing, physical health, and overall quality of life
Osmosis is an animal’s way of adapting to different types of salinities (Office of Naval Research 3). All marine mammals have special traits that they adapted to help them survive in or around marine habitats (Marietta College 1). As prompted by the Marietta College of Ohio “Many organisms in saltwater are osmoconformers.” (1). An osmoconformer is an organism that has the same concentration of salt within its body as the surrounding water (1)....
Reapply every two hours. Protect your skin from harmful UV rays as much as possible.