Insecticides In Crickets

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.

The relevant factors in this decision involve looking at the potential advantages of an IGR (insect growth regulator) over the traditional adulticide products currently in the market. With toxicity and safety concerns of these types of products being top of mind for many consumers, the newer IGR products should bring welcome benefits to end consumers using the product on a regular basis.

This table represents how many pill bugs were on each slice of filter paper, that had a different solution on each of them, over 30 second intervals lasting 5 minutes. This is what were recorded our data on for this part of the lab.

The gypsy moth (Lymantria dispar) is a highly disruptive species that can, and has played a distinctive role in the lives of many organisms. Included in these organisms are various deciduous trees and shrubs, wildlife species that share the same environment, and even humans. The gypsy moth destroys the beauty of woodlands via defoliation, alters ecosystems and wildlife habitats, and disrupts our own lives. It should therefore come as no surprise that the U.S. Department of Agriculture and many other agencies have taken huge steps to help diminish populations of this small, yet persistent species. In an effort to control these overwhelming populations, five chemical control agents have

Throughout this experiment a number of random and procedural errors were apparent; these errors could have affected the results of the experiment in a number of ways. One experimental error that occurred during the experiment was that some flies became stuck in the food source and died. The main cause of this was the fact that the fly vials were stood up (vertically) before the flies had fully recovered from the anaesthetic. This could be overcome in future experiments by ensuring that the vials are kept horizontal until all of the flies fully recover from the anaesthetic.

The LC50 of insecticides rotenone and pirimicarb were compared by testing blowfly, blowfly larva, woodlice and daphnia. Rotenone is a NADH dehydrogenase inhibitor causing death by oxidative stress however pirimicarb causes toxicity through acetylcholinesterase inhibition. It was found that rotenone had large toxic effects on daphnia, blowflies and woodlice but not maggots and pirimicarb had low toxic effects on all of the organisms tested. Due to the low percentage death caused by pirimicarb a LC50, however in rotenone a LC50 was performed for daphnia, woodlice and blowfly the LC50 for each organism was compared concluding

Northwest Coalition for Alternatives to Pesticides (NCAP) (Winter 1992). Malathion Insecticide Factsheet. Journal of Pesticide Reform 12(4). Retrieved May 4, 2008, from

Every 30 seconds their preferred position was documented. Once the three minutes were up and all the information was documented then the ten pill bugs were gently collected and put back in to their jars. These pill bugs were then traded with another tables pill bugs. The new pill bugs came from a sucrose and water chamber habitat. Again ten of these pill bugs were gently grabbed and placed in the chamber for 3 minutes with every 30 seconds documenting where the pill bugs preferred. After the 3 minutes the pill bugs were grabbed placed back in to their jars and switched again with a different table. The last trial of pill bugs came from a tea and water habitat. The ten pill bugs were gently grabbed and placed in to the chamber for three minutes. Every 30 seconds their preferred habitat was documented. When the 3 minutes were up the pill bugs were gently grabbed and placed back in to their jar. In this experiment the control was the distilled water, the dependent variable was the number of bugs in the habitat preferred, and the independent variable was the alcohol, and the water

The containers were plastic and 18 by 15 by 6 centimeters long. Prior to the experiment being performed, the crickets had spent a week in these residencies. Along with the crickets in the plastic containers, there was wet pieces of paper towel and a slice of carrot.

The goal of our experiment was to determine the type of environment that pill bugs prefer. During the experiment, the pill bugs went through three trials. The pill bugs were placed in different environments, such as cold environment (ice), normal environment (room temperature), and hot environment (heat) and their behavior was observed. In the first trial, all the four pill bugs were moving in ice, room temperature, and hot environment. The average turning of bugs was 2.5 turning in ice, 4 turning in room temperature, and 3 turning in the heat. The average round made by bugs was 1.5 round in ice, 1 round in room temperature, and .5 round in heat. In the second trial, all four bugs were moving in ice, room temperature, and heat. The average turning was 1 turning in ice, 2 turning in

The risk assessment was to use the field data to include the uncertainties that eliminates any more future concerns with affecting the species during this process, along with the reduction of the mortality rate among the ducklings. The breakdown of the uncertainties was used for predicting the magnitude and probabilities of adverse effects to non target aquatic and terrestrial species resulting from the introduction of pesticides into their environment the probabilistic analysis used in the assessment provides quantification towards the uncertainties in the risk estimate. The risk assessment of the complex exposure to the pesticides provides methods to estimate the probability and impacts resulting from exposure, in this approach. In al it sheds light on the case study that certain elements and processes need to be

Biodiversity creates an interconnected system where each part builds off of one another to create a functional ecosystem. For example, a small insect such as a bee is critical for survival of many other species because it pollinates so many plants. Currently, the population of bees is dramatically decreasing due to anthropogenic actions such as using harmful pesticides. If the population of bees go extinct, so many species would follow because they would not get pollinated. This is problematic because humans do not have the time or the funds to replicate the vital work of the bee.

Neonicotinoid pesticides are a group of chemicals widely used on farm crops, plants, and trees (1). The concern behind these pesticides is the harmful impact on pollinating insects such as honey bees and bumble bees (1). Neonicotinoids are sprayed onto the plant where they are absorbed by the plant and are transported to all parts of the plant including the pollen (see figure 1) (1). Bees then ingest the pesticide via the pollen; specifically, this is the point where the central nervous system of the bees becomes compromised. A large number of deaths in bees is being used as an argument against the use of neonicotinoids (1).

There are different types of pesticides, which include the contact, the dust and wettables and the systemic ones. In the study of CCD, several pesticides are being investigated with emphasis being laid on antibiotics, miticides and neonicotinoid pesticides. Just like other insects are vulnerable to pesticides, bees are no exception. Since bees are also insects by nature, the alleged role of pesticides in CCD is justified. Neonicotinoids are pesticides that contain nicotine and the most widely used are imidacloprid and clothianidin, whose effects on other insects are similar to those exhibited in CCD. The effects of miticides are disastrous as they involve the reduction of not only the sperm count among the drones, but also the viability of those sperms (Timbrell, 2002).