Home Pets Fishs How a Fish's Immune System Works

How a Fish's Immune System Works

93
0
  • Breed Group: 
  • Height: 
  • Weight: 
  • Life Span: 

How a Fish's Immune System Works

 

All fish have an immune system to fight diseases, although the system is by no means as advanced as the ones found in mammals. The system breaks down into two main parts: protection from physical invasion and internal pathogen handling.

 

Physical protection comes in the form of scales and the layers of dermis and epidermis. These provide defense against physical injury and disease organisms in the environment, which is further improved by a mucus covering that contains bactericides and fungicides. This mucus membrane is constantly renewed. It helps slough off debris and discourages parasites from attaching themselves to the fish.

 

Pathogens can still enter the fish’s body, either through physical injury or the digestive tract. Although the digestive system has active enzymes and a very pathogen-unfriendly pH level, diseases can sometimes survive. Stress can also be a problem if it causes the gut to seize up — anaerobic fermentation and active enzymes can attack the gut wall and weaken it enough to allow diseases to enter.

 

The efficiency of a fish’s immune system is affected by its environment. Colder water slows down the system, so infected fishes tend to exhibit “fever symptoms” and head for warmer areas. Colder water may or may not affect the infection: if it does not slow down the pathogens as well as the immune system, death is inevitable.

READ
What is Osmoregulation?

 

Fishes have some general immunities provided by products in their blood: the antiviral chemical interferon and C-reactive protein immediately attack bacteria and viruses.

 

As soon as a pathogen is detected, the fish’s body coordinates efforts to resist: firstly, the entry point is sealed off to correct any osmoregulatory problems and hamper the foreign body’s progression. Histamines and other products are produced by damaged cells at the entry point to cause inflammation and make the blood cells close up. Fibrinogen (a blood protein) and clotting factors create a barrier of fibrin to build a physical barrier at the same time. White blood cells are attracted to the same area and pick up the foreign bodies, taking them away to the spleen and kidney for handling.

 

  • How a Fish's Immune System Works
  • 1
  • 2
  • Next

mucus

A type of slime that is made up of certain salts, cells, or leukocytes

pathogen

Something that is capable of producing disease

epidermis

The outside layer of the skin

dermis

The skin; also referred to as the corium

antigen

Any substance or item that the body of an animal would regard as strange or unwanted; a foreign disease or virus in the body (toxin, etc.)

anaerobic

a) living in an environment lacking free oxygen b) pertaining to an organism with the ability to live in an environment lacking free oxygen.

READ
What Are GloFish?

digestive tract

The whole system involved in digestion from mouth to anus

Source: Internet

vote
Article Rating

How a Fish's Immune System Works Breed Characteristics

Adaptability starsDog Friendly starsShedding Level stars
Affection Level starsExercise Needs starsSocial Needs stars
Apartment Friendly starsGrooming starsStranger Friendly stars
Barking Tendencies starsHealth Issues starsTerritorial stars
Cat Friendly starsIntelligence starsTrainability stars
Child Friendly starPlayfulness starsWatchdog Ability stars
  1. Adaptability stars
  2. Affection Level stars
  3. Apartment Friendly stars
  4. Barking Tendencies stars
  5. Cat Friendly stars
  6. Child Friendly star
  7. Dog Friendly stars
  8. Exercise Needs stars
  9. Grooming stars
  10. Health Issues stars
  11. Intelligence stars
  12. Playfulness stars
  13. Shedding Level stars
  14. Social Needs stars
  15. Stranger Friendly stars
  16. Territorial stars
  17. Trainability stars
  18. Watchdog Ability stars

How a Fish's Immune System Works Breed Characteristics

Adaptability starsEnergy Level starsShedding Level stars
Affection Level starsGrooming starSocial Needs stars
Child Friendly starsHealth Issues starsStranger Friendly stars
Dog Friendly starsIntelligence stars
  1. Adaptability stars
  2. Affection Level stars
  3. Child Friendly stars
  4. Dog Friendly stars
  5. Energy Level stars
  6. Grooming star
  7. Health Issues stars
  8. Intelligence stars
  9. Shedding Level stars
  10. Social Needs stars
  11. Stranger Friendly stars
Subscribe
Notify of
guest
0 Comments
Inline Feedbacks
View all comments