How Does Starvation Affect Larval Behavior

The lab handout provided by the instructor was used as a guideline to conduct this experiment. The only difference was the organism used and data collection period. For this experiment, pill bugs and crickets were utilized. Also, data was collected for a period of 12 minutes.

The dependent variable is pulsation rates of L. variegatus before and after they were in the treatments. The standardized variable of this experiment would be the temperature of the surroundings of the L. variegatus, the three pulsation rates taken for each worm before and after the treatments, and also the amount of time each worm was kept in their respective treatments. The level of treatment for this experiment would be ten because of the six different concentration treatments of caffeine and nicotine along with the four household drugs. The sample size of the experiment differed from some treatments to other. For the three different concentrations of caffeine and nicotine, the sample size was 18 black worms each. The sample size of the control treatment of week 1 was 6 black worms. 12 black worms were used for the control of week 2, decaffeinated coffee and instant coffee. 11 black worms were used for the tea treatment and 15 were used for the tobacco treatment. There were three replications of the pulsation rate readings per worm before and after the treatment. With all this information we were able to get the results we got.

This experiment was performed to observe the taxis and kinesis of certain organisms. This is important because the organism’s survival and ability to reproduce depends on how they orient to stimuli using senses. We investigated the behavior of pill bugs to determine if they’ll move towards or away from the vinegar through smell. If I place pill bugs in a behavior tray with different chambers, then they’ll move away from the chambers that contains vinegar. A behavior tray with 5 chambers is used and 2 were control while the other 2 has cotton balls with a few drops of vinegar on it. 5 pill bugs are positioned in the center of the chambers and is covered with a transparent cover to observe the organisms for 10 minutes. Results had shown the class

The purpose of our experiment was to observe the behavior of the pill bugs. We were trying to find exactly whether the pill bugs would be attracted or repelled by the chemicals. The chemicals used were vinegar, water, salt solution and a sugar

-Arthropods use pheromones, this includes sowbugs and cockroaches. Chemical signals are picked up by antennae.

As an experiment I would place multiple kinds of cereal in front of a single mealworm, and record their reactions to each certain type of

In previous studies, Frank and Byram’s article suggest that taste and smell interactions are dependent on taste and odor. In their experiments, they gave subjects strawberry

Temperature had a direct effect on oxygen consumption of crayfish, Orconectes propinquus. Crayfish acclimated to warm temperature (20 to 25 C) had a mean mass of 8.25g +/- 1.05. Crayfish acclimated to cold temperature (3 to 5 C) had a mean mass of 10.61g +/- 0.77. Oxygen consumption rates of 30-60 minute treatments were used and there was no significant difference between the two different treatments (t=0.48, df=58, P=0.70). The data from 0-30 minutes were not used because the crayfish were disrupted by transportation and the data were not normally distributed. The Q10 value was 1.05, representing that there was full compensation for oxygen consumption for the crayfish at two different acclimated temperatures. The oxygen consumption of crayfish was not affected significantly by two different temperatures (Figure 1).

This experiment was constructed to determine which type of writing utensil the termites were most attracted to and why. The experiment was performed by placing two separate circles (one red papermate and one lead pencil) on a piece of paper to see what line is favored by the termite. The termite was placed on the lead pencil path first, and then on the red papermate pen path to count how many seconds the termite remained on or followed the pathway. The termite stayed on the red papermate line for a much more significant time than on the lead pencil line. “The presence of insect pheromones that chemically control the behavior of highly specialized social insect

Activators of Adenylate Cyclase would cause production of cAMP, which is a second messenger. This would amplify the signal and increase the extent of the scent.

Purpose: The purpose of this experiment is to observe the pill bugs’ behaviors when introduced to a stimuli, a strong scent, and it is important to notice whether the pill bugs perform taxis or kinesis as a result of the stimuli. In addition, the purpose is to learn how to properly design an experiment is.

The small shrimp, Hymenocera picta, is a general predator of all starfish and has been found to prey on A. planci at some locations. Pherecardia striata can only attack damaged A. planci and cause its death. Therefore, P. striata is regarded as a scavenger rather than as a predator. A. planci attracts many other scavengers who are able to tolerate A. planci’s horrible taste for the chance at a food source (Fisher 2011).

Properly developed antennae of a fly containing different kinds of olfactory receptors allow the fly to use small amounts of smell for orientation towards resources like oviposition sites, food or mates. Scientists at one of the Chemical Ecology at Max Planck Institute in Jena Germany had used mutated flies and proved that the extremely sensitive olfactory system of the fruit flies.

Parental care is important amongst animals and humans, but often there is filial cannibalism where an organism will consume their offspring, with one known factor being to gain nourishment in order to reproduce more effectively and to prevent predators from eating their offspring. The experiment was tested one specific organism, the sand goby. One male and two female gobies were placed in an aquarium consisting of 50 liters, and they were fed frozen Chironomidae larvae, the weight of the sand gobies was recorded before and after the experiment, to see if they consumed their offspring. The sand gobies were able to reproduce,, but there was visual cues of a live shrimp, which are the predator of the sand goby, which then signaled a chemical

“I no longer feel inclined to make comments on my own work, which I feel should speak for itself.” - Fleur Adcock