Popular in General Ecology
Popular in Biology
This 3 page Class Notes was uploaded by Sedona Dorsett on Sunday October 11, 2015. The Class Notes belongs to 2010-1 at University of Denver taught by Dr. Tinghitella in Fall 2015. Since its upload, it has received 8 views. For similar materials see General Ecology in Biology at University of Denver.
Reviews for Notes
I love that I can count on (Sedona for top notch notes! Especially around test time...
-Miss Jeremie Schmitt
Report this Material
What is Karma?
Karma is the currency of StudySoup.
Date Created: 10/11/15
91415 Ecology 20101 Welcome to Ecology o Ecology the study of relationships between organisms and their environment Ecology tests HYPOTEHSIS and is not environmentalism activism Course facts Unnecessary comes from the Spirochete bacterium Borreia burgdorferi occurs when bitten by blacklegged tick Zoonosis Vector born diagnostic tests are poor it is better to look at symptom and where the patient has been 0 Zoonosis infectious disease transmitted between species from animals other than humans to humans 0 Reservoir Nonhuman vertebrate the disease resides in that mains and amplify the pathogen Vectorborn disease transmitted to humansanimals by an insect or other arthropod oz Lyme Disease is an EMERGING INFECTIOUS DISEASE Appea rs suddeny OR increases dramatically in incidence or geographic extent eg HIV West Nile discovered in Lyme Conneticut Juvenile Rheumatoid Arthritis JRA Painful swelling ofjoints in children Appears to be an autoimmune disease White blood cells a8ack and damage healthy tissues in and around joints Relatively rare 5000075000 kids in US 0 All the children had a bull s eye shin rash similar to a case in the EU 0 Patients also reacted well to penicillin indicating that it was bacterial Because of these two clues they knew that it was similar to Rocky Mountain Spotted Fever which was also had a tickvector American Dog Tick Ricketts 0 When they surveyed the area the found the Black legged tick with the strain B burgdorferi Since there was a HUGE increase in the Deer population most of which were covered in ticks they decided to kill off most of the deer as a solution This led to a worse incident Richard Ostfeld studies whitefooted mice that harbored juvenile blacklegged ticks This led to the revelation of Reservoir Competence how well the pathogen replicates inside the reservoir species If you refer to the graph on page 6 you will see that the mice were a better reservoir than the deer so killing the deer was not a practical solution Deer INCOMPETENT reservoir Mice COMPETENT reservoir The key to this problem was ACORNs Blue Acorns Oak trees produced huge quantities of acorns in year 1 masked Red Mice Because there was an overabundance of acorns more mice were able to survive and reproduce Yellow Ticks Because mice were the main reservoir more juvenile ticks were able to grow and survive Abundance Year Hence there was a strong correlation between Acorns Mice and Ticks In Summary As Acorns increase Mice increase and Juvenile Ticks increase BUT If Acorns decrease then Mice Decrease but Adult Ticks also increase BECAUSE they move to humans In short Two years after an acorn mask do not go into the forest