ecology

• The systematic study of the interrelationships

  that exist between organisms and their

  environment.

  Ecology
• The systematic study of the interrelationships

  that exist between organisms and their

  environment.

  microbial ecology
• is defined as the living

  together or close association of two dissimilar organisms

  (usually two different species).

  Symbiosis
• is used to describe a symbiotic relationship

  in which neither symbiont is affected by the relationship. In

  other words, neutralism reflects a situation in which different

  microorganisms occupy the same ecologic niche, but have

  absolutely no effect on each other.

  Neutralism
• A symbiotic relationship that is beneficial to one symbiont and

  of no consequence (i.e., is neither beneficial nor harmful) to the

  other.

  The relationship is of obvious benefit to the microorganisms

  (they are provided nutrients and “housing”) but the

  microorganisms have no effect on the host.

  commensalism
• One example of a commensal is the tiny mite called _______,

  which lives within hair follicles and sebaceous glands,

  especially of the eyelashes and eyebrows.

  Demodex
• A symbiotic relationship that is beneficial to both symbionts

  (i.e., the relationship is mutually beneficial).

  Mutualism
• Humans have a mutualistic relationship with many of the

  microorganisms of their indigenous microbiota. An example is

  the intestinal bacterium ___________ ____, which obtains

  nutrients from blood materials ingested by the host and

  produces vitamins (such as vitamin K) that are used by the host.

  Escherichia coli
• is a symbiotic relationship that is beneficial to one

  symbiont (the parasite) and detrimental to the other symbiont

  (the host).

  Paratism
• covid 19


  pandemic
• colonize newborn intestine


  vaginal lactobacilli
• a group of signs and symtoms that are associated with a disease.

  Syndrome
• Human Herpes Virus 8


  Kaposi's sarcoma
• A communicable disease that is easly transmitted from one person to another

  Contagious disease
• Rabies


  Zoonotic disease
• cervical cancer


  papillomavirus
• many people acquire disease in short time period

  epidemic
• predominantly a zoonosis


  plague
• maybe acquired from infected birds

  psittacosis
• indesting oocysts from cat feces


  taxoplasmosis
• contracted through urine of rodents like rats

  leptospirosis
• from the feces of turtles other reptiles

  tularemia
• respiratory failure is the usual cause of death 


  botulism
• skinning infected rabbits


  salmonellosis