This experiment was conducted to determine whether or not Callosobruchus maculatus, or bean beetles, had a bean color preference for oviposition choice. Oviposition is the process of a female insect laying her eyes on plant parts and other materials, which can be influenced by many factors. The bean beetle eggs are opaque and clear, which allowed us to test the hypothesis that C. maculatus prefer the darker red Adzuki beans over the white Black-eyed peas for oviposition choice. Two different colored bean types were used, the red Adzuki beans and the white Black-eyed peas. We placed three female and two male bean beetles in each petri dish, with 55 of each bean type randomly placed in the dish, for a week. After a week, the beans were collected and the number of eggs on each bean was counted …show more content…
maculatus, prefers a certain color bean to oviposition on, we used a group of bean beetles with their natal beans being the green mung beans, which was provided in the laboratory. Next, we decided on two new colored beans to test our hypothesis. We chose the red Adzuki beans because they were a darker color and the white Black-eyed peas because they were a lighter color. Even though the colors contrasted from each other, the two types of beans were relatively the same size, which excluded size from being a preference for oviposition. To start and set up this experiment, we took 55 of each type of bean, 110 in all per petri dish and randomly mixed them in the petri dish, to eliminate any random error of the bean placement. We placed three female bean beetles and two male bean beetles in each petri dish. We had a total of three petri dishes, one for each trial. The petri dishes were then placed in constant light under the same conditions for a week. After one week, the data was then collected by counting the number of eggs on each bean by using a light microscope and this number was then recorded and compared to each bean
The negative and positive controls will be separate from each other and the populations that are being tested on. All tree species will start out with no PSHB infestation, and then 10 PSHB individuals (7 females and 3 males) will be released on a single tree from each of the two experimental populations of trees (a total of 20 PSHB individuals). After 120 days, or approximately 3-4 generation cycles [2], the greenhouses will be fumigated twice to kill all the surviving beetles. The number of beetles after 120 days will be counted in both the golden-rain tree greenhouse and the avocado tree greenhouse to determine the spread of infection, and the rate of success of reproduction of the beetles in each tree
This graph shows that each ratio of beetles had a different mating time so there was no significant difference in the time of the mating ratio beetles. Discussion In experiment our hypothesis stated that the female beetle would lay more eggs on the northern bean because the northern bean looks and feels like the original beans the beetles came from. The original bean which is the black eye peas is where the beetles grew up on for many generations so they are successful and familiar with supported that the beetles would lay majority of their eggs on the Northern beans because the northern beans are close to what the bean beetles originated from, but as we analyzed the data it also showed that the bean beetled laid most of their beans on the Navy beans as well.
Bio Lab 113 Dr. T. Hendrickson Nathan Jay Introduction The purpose of The Jumping Bean Beetle study is to test the hypothesis that Bean beetles’ oviposition is determined by the bean beetles’ birth place. Bean beetles, Callosobruchus maculatus, are agricultural pest insects of Africa and Asia that presently range throughout the tropical and subtropical world.
Adewunmi Felicia Adebanjo Principles of Genetics Lab report The Fruit Flies: A Model Organism to Test for Genetic Equilibrium. October 12th, 2017 Abstract The traits studied in this lab are the presence or absence of wings, and eye color.
Francesca Agobe Section-17 BRASSICA RAPA INTERACTIONS WITH INTRASPECEFIC COMPETITION AMOUNG HIGH AND LOW DENSITY VARIABLE POPULATIONS Abstract Competition occurs in plants when there are a limited number of resources. Certain traits that affect advantages or disadvantages in between organisms. Our hypothesis for our experiment that intraspecific competition in low and high density treatments would affect height and survivorship for Brassica rapa.
By the end of the experiment, it became clear that the pill bugs preferred the environment consisting of dirt over the other
The effects of where these larvae are laid can dictate the fate of these gall fly larvae. A study shows that avian predators can assess a gall 's content prior to pecking it open, preferring galls that are inhabited by gall fly larvae. Bird predation was found to be concentrated near the places with a lot of tree cover where S. gigantean a large centipede tends to pray few attacks occurred in the open where golden rods are prevalent. The study was a field experiment to observe the preference of avian predators on galls in different habitat types and that had different sizes, and heights of galls. It is possible that birds have either learned through experience or evolved through natural selection to choose the more profitable galls (Poff et al. 2002).
For this experiment, the fruit fly was the species of choice since the fruit fly does not occupy a lot of space, can produce large amounts of offspring for each generation, and has an observable phenotypic trait such as eye color. There are four life stages of the fruit fly: egg, larva, pupa, and the adult stage (). Using a dissecting microscope, we can determine the sex of the fruit fly be either observing the abdomen or the legs for a sex comb (). For males, the abdomen is darker colored and rounded at the end, while females have a longer and bigger abdomen with black stripes (). Males also have a sex comb located on their front legs that can be used to determine their sex when it is difficult to separate from their abdomen color and size ().
Introduction: The objective of this lab was to study the trait of aldehyde oxidase (AO) in fruit flies. Aldehyde oxidase is responsible for catalyzing the oxidation of many aldehydes. The aldox gene controls the amount of AO activity in Drosophila melanogaster. In the first part of the lab, an enzyme spot test will be performed on two different vials of Drosophila to exhibit the AO activity of both vial 1A and 1B. A positive test for AO test will present a blue color, while a negative test will present no reaction.
A Demonstration of Chemotaxis Between Flies and Various Substances (Sugar vs Bacteria) Abstract: The purpose of this lab based on the Drosophila melanogaster (the common fruit fly) reactions. Since the fly has been studied and observed for many years, and known for its unique chemotactic attractions to different stimuli, it was an ideal organism for the study being conducted. In the experiment the purpose was to be able to figure out whether the flies would be more attracted to sugar or bacteria.
llowjacket and bee social structures The Eastern Yellowjacket ( Vespula maculifrons) and the Western honey bee (Apis mellifera) share many similarities and differences when it comes to their social dynamic and hierarchy. Both insects have similar classes from the queen to the worker and then finally the drones. All these different classes do almost the exact same job between the yellowjackets and the honey bees but the two do share major differences in timing and population size as well as a difference in ferocity between the two species.
In our experiment, we examined the behavior of isopods by conducting the experiment based on our hypothesis: “If ten isopods are put into the test chamber, 5 in sand and 5 in soil, which environment will the pillbug prefer.” We hypothesized that the isopods would favor the soil more than the sand because pillbugs are typically found in soil and not in sand. Pillbugs are favored in soil because the natural role of a pillbug is to eat dead and decaying things but, in sand there are no nutrients available for pillbugs. Pill bugs are mostly found in moist environments, due to having gills, gills only function when they are wet so pill bugs will inhabit places in which air holds a lot of water
We use Mendelian genetics to study the genetics of C. elegans. C. elegans have very similar genetics structure to humans. C elegans belongs to Phylum Nematode species which is very different from the earthworm. C. elegans is the first eukaryotic organism to have an entire genome sequence. It is very easy and simple to conduct an experiment on C. elegans that’s why the majority of laboratories use this organism.
In this egg drop project, a container was built to house one egg and was then dropped at various heights. The purpose of this lab was to find how impact time affected the force with which an object, the egg container, hits another surface as the momentum moves to zero. Our hypothesis states that if the impact time is stretched longer then the force exerted on the egg would decrease, making the egg less likely to break. The independent variables for the egg drop project was the height at each drop; the dependent variables were impact time and survival of the egg. The controls were mass, design of the container, and the egg.
Ants foraging activity: the type of sugar concentration preference R. J. Matlhabe, 212560085 School of Biological and Conservation Sciences, University of KwaZulu-Natal Pietermaritzburg, Private Bag X01, Scottsville 3209, South Africa ABSTRACT Ants normally select food as a group and select the type of food preference depends on the availability, palatability and accessibility of the food. The selection of food must result in the success of individuals. This study investigated if ants showed preferential forage selection when exposed to different sugar concentrated solutions. Three types of sugar concentrated solutions (5%, 15% and 30%) were placed around an ant hive for 60 minutes. The number of ants found in each sugar concentration was recorded