How Does Temperature Affect The Maggot Movement
The effect of temperature on the rate of maggot movement
Research and Rationale
This experiment is aiming to analyse the behaviour of maggots when they are exposed to light and the effect of that on their movement rate. Behaviour is the way in which animals respond to external factors is known as behaviour. As animals become bigger their behaviour becomes more complex. This is because larger animals tend to have a more complex nervous and hormonal system. Two of the types of behaviour are called taxis and kinesis.
Taxis is a movement whose direction is determined by the direction of the stimulus. Some animals may move towards certain stimuli such as the smell of food. Others may move away from stimuli such as excessive heat.
Kinesis is a behaviour …show more content…
Maggotsrely on the temperature of the environment to determine their internal temperature andtherefore their rate of metabolism (2). Therefore theyare most likely to move at a rate which is inaccordance with the external temperature. This correlation, between temperature andmovement, is what this experiment aims to determine. Spearman's Rank Correlation is a nonparametric measure of statistical dependence between two variables. It assesses how well the relationship between two variables can be described using a monotonic function. If there are no repeated data values, a perfect Spearman correlation of +1 or −1 occurs when each of the variables is a perfect monotone function of the …show more content…
Since metabolism supplies the organism with energy, at higher temperatures more energy will be produced. As mentioned at the introduction that maggots are very simple organisms and rely on the external temperature of the surrounding environment to determine their own body temperature. Therefore, at higher temperatures maggots will move more quickly, since their faster rate of metabolism provides them with the energy to do so. However, at very high temperatures, there will most likely be a decrease in the metabolic rate due to the denaturation of enzymes. Therefore, it would be expected that at higher temperature, maggots would move more slowly, once they could not be provided with as much energy from metabolism. However, for humanistic reason the maggots will not e heated to an abnormally high level, to prevent harming them.
(1)http://www.reviewmylife.co.uk/blog/2008/06/04/investigation-into-the-blowfly-larvaes- response-to-light/#Aims
(2) http://www.nuffieldfoundation.org/practical-biology/investigating-response-calliphora-larvae-light
(3)https://en.wikipedia.org/wiki/Spearman%27s_rank_correlation_coefficient
Planning
Materials
1 15cm by 15cm Piece of thick black paper
Sharp pencil
1 600cm3 Glass beaker
Ice- enough to fill the beaker up to 2cm from the top
2 Table lamps
Tripod
Mercury thermometer
10 Maggots
Stop clock
2 Petri dishes
Research and Rationale
This experiment is aiming to analyse the behaviour of maggots when they are exposed to light and the effect of that on their movement rate. Behaviour is the way in which animals respond to external factors is known as behaviour. As animals become bigger their behaviour becomes more complex. This is because larger animals tend to have a more complex nervous and hormonal system. Two of the types of behaviour are called taxis and kinesis.
Taxis is a movement whose direction is determined by the direction of the stimulus. Some animals may move towards certain stimuli such as the smell of food. Others may move away from stimuli such as excessive heat.
Kinesis is a behaviour …show more content…
Maggotsrely on the temperature of the environment to determine their internal temperature andtherefore their rate of metabolism (2). Therefore theyare most likely to move at a rate which is inaccordance with the external temperature. This correlation, between temperature andmovement, is what this experiment aims to determine. Spearman's Rank Correlation is a nonparametric measure of statistical dependence between two variables. It assesses how well the relationship between two variables can be described using a monotonic function. If there are no repeated data values, a perfect Spearman correlation of +1 or −1 occurs when each of the variables is a perfect monotone function of the …show more content…
Since metabolism supplies the organism with energy, at higher temperatures more energy will be produced. As mentioned at the introduction that maggots are very simple organisms and rely on the external temperature of the surrounding environment to determine their own body temperature. Therefore, at higher temperatures maggots will move more quickly, since their faster rate of metabolism provides them with the energy to do so. However, at very high temperatures, there will most likely be a decrease in the metabolic rate due to the denaturation of enzymes. Therefore, it would be expected that at higher temperature, maggots would move more slowly, once they could not be provided with as much energy from metabolism. However, for humanistic reason the maggots will not e heated to an abnormally high level, to prevent harming them.
(1)http://www.reviewmylife.co.uk/blog/2008/06/04/investigation-into-the-blowfly-larvaes- response-to-light/#Aims
(2) http://www.nuffieldfoundation.org/practical-biology/investigating-response-calliphora-larvae-light
(3)https://en.wikipedia.org/wiki/Spearman%27s_rank_correlation_coefficient
Planning
Materials
1 15cm by 15cm Piece of thick black paper
Sharp pencil
1 600cm3 Glass beaker
Ice- enough to fill the beaker up to 2cm from the top
2 Table lamps
Tripod
Mercury thermometer
10 Maggots
Stop clock
2 Petri dishes