Micro presentations final exam

Ophiocordyceps Unilateralis

• zombie ant fungus

• causative agent: ophiocordyceps unilateralis

• host: formicine ant

• transmission: spores

• signs/symptoms: behavioral changes, death grip

Toxoplasmosis

• causative agent: toxoplasma gondii

• host: definitive host = feline, intermediate = warm blooded vert.

• transmission: ingestion of undercooked meat, ingestions of oocysts from contaminated sources, congenital transmission through placenta

• signs/symptoms: usually no symptoms (need blood/serology tests)

African sleeping sickness

• causative agent: trypanosoma brucei gambinse

• host: primarily humans (sometimes cattle, goat, sheep)

• transmission/vector: tsetse fly bite (multiplies within fly

• signs/symptoms: gradually worsen until coma/ death if 1+ year

Aspergillosis

• causative agent: aspergillius fumigatus

• host: primary humans (cats, dogs, cattle)

• transmission/vector: airborne inhilation of of conidia

• signs/symptoms: hemoptysis (bloody cough)

Ringworm

• causative agent: dermotophyte (fungal infection), ascomycota

• host: humans and animals

• transmission/vector: any host that you come into skin-skin contact

• signs/symptoms: red, itchy, scaly ring

Leishmaniasis

• causative agent: protozoan leishmaniasis

• host: humans (other mammals serve as resevior)

• transmission/vector: sandfly vector, bit injects promastigotes

• signs/symptoms: just fever, lesions, wieght loss, everything

Devil Facial Tumor Disease

• causative agent: from a transmissile cancer cell line dervied from schwann cells

• host: tasmanian devil

• transmission/vector: tumor allograft during direct contact

• signs/symptoms: large tumors on face/neck of devils

Black Band Coral Disease

• causative agent: microbial consortium, main bacteria are cyanobacteria (gram negative, trichomes/chains) and sulfate reducing bacteria (gram negative, bacillus/rods, obligate anaerobe)

• host: all corals

• transmission/vector: direct coral to coral contact, spreads in water

• signs/symptoms: black band delineating healthy coral and exposed skeleton, tissue necrosis

Snake Fungal Disease

• causative agent: ophidiomyces ophidiicola

• host: snake

• transmission/vector: direct contact/ environment exposure

• signs/symptoms: lesions, swelling, ulcers, blistering

Rabies

• causative agent: enveloped, negative strand RNA virus (RABV)

• host: mammals

• transmission/vector: bites, direct contact with saliva

• signs/symptoms: foaming, death

White Nose syndrome

• causative agent: pseridogymnoascus destructans (cold loving fungus)

• host: bats

• transmission/vector: fungal conidia passed through direct contact or contact with contaminated surfaces

• signs/symptoms: white fungal growth, scarred wings, loss of body fat

new york

true

skin

what combinations of signs and symptoms…

white fungal growth as the time…abnormal waking during hibernation, visible wing damage