How The Amount Of Motor Oil Affects Hatching Viability Of Brine Shrimp Eggs Essay

Firstly adult female brine shrimp ovulate approximately every 140 hours and in optimal conditions the fertilised eggs can almost immediately hatch, even over a relatively short lifetime of a year this is a lot of young. They have another brilliant reproductive adaption; while in extreme conditions, such as low oxygen level or salinity above 15‰, female brine shrimp produce eggs with a chorion coating which has a brown colour. These eggs, also known as cysts, are metabolically inactive and can remain in total stasis for two years while in dry oxygen-free conditions, even at temperatures below freezing. The shrimp have also been able to survive dangerous salinity levels as the eggs wait to hatch if the salinity levels are too high. Once placed back in briny water the eggs hatch within a few hours. This ability also has enabled them to spread the population by the eggs travelling on the feet of birds. They have also been known to reproduce asexually by parthenogenesis in the absence of

Brine Shrimp are a micro-crustacean that is found mostly in inland saltwater bodies, however, the salinity levels that they live in vary greatly. The conditions that they require can be made at home as the eggs (cysts) of the shrimp are dry, hard shells that can withstand drought and go without water for up to 50 years. This study presents the results of 3 different salinity levelled environments to the Brine shrimp in order to discover a salinity level that produces the most successful hatching rate. By filling 3 Petri dishes with 20mL’s of purified water, each dish contained varying sodium chloride amounts from 15ppt, 25ppt, and

The primary purpose of the lab was to test and observe the effects of the process of osmosis on decalcified eggs. Before the process, the initial weights of the eggs were taken and noted. Two eggs were then immersed in a deionized water solution. The same was repeated to the other two solutions of 20% and 40% sucrose. The weights of the eggs were measured after 15 minutes to note the change in mass due to osmosis and again after 60 minutes to take the final measurement. Overall, while some human error might arise in the weighing process, care was taken in handling the eggs and during the weighing process. As such, it was found that the eggs behaved as predicted. It was found that the eggs placed in the hypertonic solution lost

The article "The Amazing Penguin Rescue" main idea is that oil spills can cause lots of problems to the animals such as the African Penguin. For example on paragraph 7 from "The Amazing Penguin Rescue" it states "You are not the only penguin that has become soaked with poisonous oil." Another example is found on paragraph 13 it states "It

The purpose of this lab was to answer the question, “Of the saline solutions of 0%, 0.5%, 1%, 1.5%, and 2% sodium chloride (NaCl), which solution will yield the highest hatching viability for the brine shrimp?” The hypothesis was that the saline solution most precise to the concentration of NaCl in seawater, which is approximately 3.5%, will yield the highest hatching viability. Therefore, the 2% NaCl solution will yield the highest hatching viability.

4. The Independent variable is the dissolved oxygen and the dependent variable is the number of fish observed.

Behavior of Brine Shrimp in Habitat Selection Introduction: This experiment was developed primarily to find the optimal or preferred living conditions of adult brine shrimp. In this lab 3 variables were tested in different degrees to determine which the shrimp prefer. The different variables were light, ph, and temperature. From outside resources I have found that brine shrimp can survive in temperatures ranging from 4° Celsius to 40° Celsius with an optimal temperature of 20°-25°. So I hope to reinforce this research by testing its validity in the lab. From another outside source brine shrimp display positive photo taxis, which means that they are attracted to light. And finally from my last outside source I have found information that

The purpose to this experiment was to study the effect of osmosis in de-shelled chicken eggs in different percentages of sucrose solutions. Osmosis is the process, in which, water moves across a differentially permeable membrane. The eggs were soaked in vinegar to remove the outside hard shell but still leave the egg in its membrane. By placing the six de-shelled in different sucrose solutions, we tested the rate of osmosis. The eggs were placed in the solutions for an hour and weighed in fifteen minute intervals. Then, each weight was recorded and graphed. The results showed that the egg in the water solution gained the most weigh and the only other egg that gained a little weight was the one in the 10% solution. All the other eggs in the different solutions lost weight, even the unknown solution. According to the results the egg that was in the distilled water solution gained weight because it is the hypertonic solution. All the other eggs lost weight because they were placed in hypotonic solutions with different concentrations of sucrose. The egg that was placed in the higher concentration of sucrose lost the most weight. So, the higher the concentration of sucrose, the more water the egg lost.

The development of A. salina will be unfavorable if exposed to too much ethyl alcohol. Treatment two and three have more ethanol alcohol than treatment one and more brine shrimp died when put into more ethanol alcohol. Since the viability was less than the viability in treatment one, the hypothesis was supported. Treatment four was the constant and had no ethanol alcohol which less cysts died when compared to treatment two and three, but when compared to treatment one, more had died,

More specifically for the experiment we will need four deshelled eggs, four beakers and distilled water with a certain percentage of sucrose, a timer, and a scale to weigh the eggs. Using the process of osmosis, we will determine the weight of the eggs after being soaked in the solution. The four beakers each had distilled water in them with sucrose but all contained different amounts. One beaker contained 0% sucrose. The other beakers contained 10%, 40%, and an “unknown” amount of sucrose. Before placing the eggs into the solution, we are to weigh each egg separately to the nearest 0.1g and record this in table. Once that step has been completed, we then place one egg in each of the beakers separately that was marked with the amounts of sucrose. At fifteen-minute intervals, remove the deshelled egg from the water inside the beaker and wipe off all the excess water. After that process has been completed, we will weigh each egg separately to see if they have gained or lost their mass/weight. Once each egg has been weighed accurately, the recorded data is placed in the table provided. This step goes on for an hour. The deshelled eggs in this experiment will increase in mass in the different types of distilled water. This lab session provided the class with the evidence that diffusion and osmosis occurs within the different types of solutions.

One of the most noticeable, and troubling, effects is on shorebirds. The coast guard has / had recovered 329 oiled birds from Galveston Bay to North Padre Island, but nearly all dead, and observations of at least 500 birds with some traces of oil on Mustang island. Mant birds come across the oil as it washes ashore, and ingest the oil by preening. This has a number of fatal consequences. All the poor mammals in the ocean such as fish, marine animals, and those involved in the area's multi-billion dollar commercial and recreational fishing industry. Galvestons Bay's fishing industry has a high Possibility of being hurt by the spill. Studies found that some fish embryos developed deformities caused from the 2010 BP Oil Spill, and many concerns are that this spill will have the same similar effects. Soon as time walked along In late March, 50 local businesses filed a class action lawsuit in federal court against the two companies whose boats were involved in creating the

Physical fouling in oil is where oil is accumulated onto sea turtles. This causes the most significant and immediate harm to turtles. It is very unlikely for a physical fouled in oil sea turtle would survive without rescue and rehabilitation (Stacy). When Trustees examined live oiled turtles and dead turtles from the GOM, they found that this lead to impeded movement and diving ability, dehydration aggravated by overheating from the dark, hot oil in the summer, and risked physical exertion. After admission to rehabilitation facilities, blood abnormalities in oiled turtles included nonspecific metabolic and physiological abnormalities attributable to oxidative stress, and exertion caused by oiling, capture, and transport (Stacy).

4.14. The accuracy of the data is dependent on the correct controls being in place, Ensuring temperate stays the same throughout all solutions, making sure that the solutions are correct that the weight and size of the eggs are the measured correctly and that when the eggs are removed they are removed at the same time. Some of the eggs were not completely submerged in the solution this may cause some errors in the experiment and may have caused varying results. The eggs were of different sizes this also will cause the results to vary, Gathering eggs of exact size and weight would have ensured the results were correct. The eggs may not have been dried enough also causing results to vary; this can be fixed by ensuring that the eggs are thoroughly dried. The eggs were taken out at a time around about 24 hours, having an exact time to remove the eggs would have eliminated errors.

There are few weakness in the experiment which could be address to make experimental design more successful. Firstly, there was no control group being tested in this experiment, which can indicate that there was no effect of temperature in either grown in room temperature or in the 25C incubator temperature. If I redesign this experiment, then there will a three groups. One group will be shown the growth of brine shrimps in the 25C incubator aquarium. The second will be placed in the room temperature conditions aquarium. Then there will be a third group which will have the temperature which will result in a normal growth rate of the brine shrimp. For example, for control I want to place them under their standard conditions. Two of the groups

Brinewater shrimp are indicator species. This means that their presence indicates something about their environment. Brine means salted water, which is the environment they live in. They survive the best in water that is 25 parts per thousand of salt solution. Brinewater shrimp also prefer to live in an environment that has a pH level of 8.