In this experiment, we are testing whether or not the Isopods' have more of a preference for an environment with syrup or with water. The alternative hypothesis we devised is that if the Isopods are placed in between a syrup and a water chamber, then they will go towards the syrup chamber. This is believed because we believe the Isopods may have an attraction to the sweet scent and taste of the syrup. My group and I observed 10 pillbugs behavior over the span of 5 minutes, recording the number of pill bugs found in each chamber every 30 seconds. We fail to reject the null hypothesis because the chi squared value is 3.6 which is less than 3.84 (critical value at .05). This indicates that we are unable to show a statistical difference between Isopods preferring the syrup environment over the water environment.
Around the world, poison frog populations have been declining due to unknown reasons. Two experiments were conducted promptly in order to find the cause of the disappearances. One hypothesis suggested that the poison frogs are in a decline because of an infectious fungus called chytrid fungus. On the contrary, another hypothesis alludes to the idea that decreasing leaf litter is causing the widespread decline. Although it seems that there are multiple reasons for the decline, it is unquestionable that, according to the data from the experiments, that leaf litter is one of the main components of the decreasing population of poison frogs, having multiple replicates of data is important in finding the answer to the decline, and that there is much more to investigate about this problem.
Poisonous Animals The cane toad is an invasive species that came from Hawaii to Australia to eat the cane beetles. The cane beetles were causing a big problem as they were eating Australia’s sugar cane. Once introduced to Australia, the cane toad multiplied until its numbers reached up to 200 million. The toad eats snakes and lizards. The cane toad’s main defense mechanism is its toxin. It has parotid venom-secreting glands that are present at all times. Even from the time a cane toad is an egg, it has venom. The venom causes rapid heartbeat, salivation, convulsions, and paralysis. The venom also causes mucous membrane pain, severe eye irritation, and visual disturbances. There are 4 species of Pacific newts- the rough-skinned newt,
The reading states that several measures have been proposed to stop the spread of the cane toad in Australia and provides three reasons of support. However, the professor states that the measures in the reading passage are unsuccessful and cause unwanted damage and refutes each of the authors ' reasons.
Based on the data, it was learned that the isopods do not appear that they differentiate between light and dark. After conducting the experiment new questions arose; Is there a maximum period of time the isopods can be in the light and dark?, and Does the type of light have an effect on where the isopods prefer to be? Some improvements that could be made are more isopods, bigger testing chambers, better means of darkness, and a less and more intense light. Another improvement that could be made is test different intensities of darkness and lightness. There were no apparent weaknesses in the experimental design. In conclusion, the isopods appear to not be sensitive to the light or the
Abstract: The main focus of this lab is on animal behaviors in terrestial isopods, also known as pillbugs. There are many purposes to this lab experiment. First, these pillbugs are put into four different types of enviroments, also known as chambers, light v. dark, hot vs. cold, moisture vs. dry, and lastly shelter vs. open. In these different chambers, there are 10 pillbugs, 5 placed into each individual chamber and then observed for up to 5 – 10 minutes. In this lab we observed that pillbugs prefer light areas, hot temperatures, moist environments, and lastly sheltered spaces. In this experiement, there were two behaviors kinesis, and taxis, our pillbugs showed taxis behavior in all four types of environments.
The Cane toad also referred to as Rhinella Mirina is an invasive toad species that is native to subtropic South America. Although they are native to subtropical rain forests, they show a preference for areas modified by humans such as gardens and drainage ditches. These toads reproduce very rapidly and have very few predators due to the toxin present on their skin and parotoid glands behind their eyes. These toads are considered pests due to the havoc they wreck on the other species within the ecosystem.
If a lake is cut from the ocean and has no large fish as predators (only dragonflies), then the sticklebacks will have a better chance at surviving and reproducing because the sticklebacks will be better adapted to the environment (presence/absence of a pelvic bone) and have little to no predators. The hypothesis was supported.
The cane toad, also known as the giant neotropical toad or marine toad, is a large, land based toad which is native to South and Middle America, but has been introduced to various islands throughout Oceania and the Caribbean, as well as northern Australia. Cane toads were introduced to Australia as a solution to cane beetles eating all the sugar cane crops.
For this assignment, I chose to research the migratory patterns of one of the largest reptiles on Earth, the Leatherback sea turtle Dermochelys coriacea. The average adult leatherback turtle can weigh up to a thousand pounds and measure from 4-8 feet in length! This great size allows them to tolerate cooler water temperatures than any other sea turtle. D. coriacea have the broadest distribution of all sea turtle species and they can be found throughout the Atlantic, Pacific, and Indian Oceans. This large range is due to the migratory habits of the leatherback turtles, which are pelagic wanderers that swim great distances to tropical and subtropical coastal regions of the world to feed, mate, and nest. Though we don’t know for certain exactly
The Big Red Frog is a storybook about the life of a red frog. The frog is lonely and just wants a friend. He then finds a friend, in which they play all night long. Eventually they had to leave, so the next day the Big Red Frog was looking for his friend. His friend didn’t show up the entire day, and he looked everywhere until nighttime. Then at the end of the book their is a plot twist, because the Big Red Frog’s friend was actually killed for frog meat.
A. If Earth was blocked from sunlight I think it would not be a good thing. The sun helps things grow and we need it to see. Short term effects would be that we’d get used to it after awhile and a long term effect would be we wouldn't be able to grow much plants. The sun helps with your brain producing endorphins. Without these more people will become sad which would be a long term effect.
The purpose of this lab was to determine the overall health of the aquatic community at Lake Wheeler. Various water and sediments samples were taken to be tested and observed in a number ways to reach a conclusion about this lake’s condition and fitness. The dissolved oxygen content, pH level, water temperature, and water clarity were also tested with the use of several different tools, ranging from a Secchi disk to pH strips and more complex contraptions like the Schindler-Patalas trap. The overall health of the lake that was tested as well as coliform samples that were taken from the surface.
The book “The Weather Makers: The History and Future Impact of Climate Change” written by Tim Flanner pertains to predicting the global warming consequence on earth and species. In chapter 9, the unraveling world, the author talks about global warming and how it can have a long-lasting and far-reaching impact on our lives. He points out the substantial and rapid change of the climate and its connection with the effects of El Nino and La Nina are also uncovered. Climate change can be a major contributor as to where species live and how they interact. The changes can also be observed by the changing migration patterns of these species. Moreover, the unexpected changes in climate can also bring about a shift in the behaviour of species such as insects, butterflies, birds, caterpillars, frogs and possums. The author illustrates an example of how in northern Mexico and southern California the increased temperature has caused the plant on which caterpillars feed to wilt earlier which eventually cause larvae to starve.