viral disease in aquarium fish
DESCRIPTION
viral disease in aquarium fish. S.salemi. introduction. Fish. fish is any member of a paraphyletic group of organisms . . . Most fish are ectothermic (" cold-blooded "). There are a variety of environmental conditions . Two Gill. ماهی گارا روفا . - PowerPoint PPT PresentationTRANSCRIPT
viral disease in aquarium fish
S.salemi
fish is any member of a paraphyletic group of organisms . .
Most fish are ectothermic ("cold-blooded")
Fish
There are a variety of environmental conditions. Two Gill
Fish love
introduction
روفا گارا ماهی
Special fish
shapeColor Sizevariety foodIn terms of behavior Location Live
Development of a fish
The life cycle of a fish contains 6 stages as generally recognized by science:
1. Egg
2 . Embry3 .Larva4 .Juvenile
5.Adult6.Senescence
Fish farming in Iranian mythology
In Iranian mythology Jamshid, the first man to Fish farming assumed the payment was Pishdadi J. King. Iranian Mahykhanh place called the Fish farming.
The artificial Fish farming in China began
The old Fish farming in the world, the proliferation activity of rainbow trout Tasma Hyan education in 1301 than in 1338 started
Definition of ornamental fish
General Principles and History aquarium fish
The first time the Chinese and Japanese with storageDevelopment and maintenance of ornamental fish in ponds Goldfish to beat
1000 years ago
کپ فیشرد گلد
Fish aquarium in South East Asia first
Ornamental fish used in countries
Were European, including one fighter who neverOr Goldfish named.
Germans for the first time in Europe reproduction, breeding and export of aquarium fish did. ? Was the first aquarium in 1819 by Pyps English.
• An aquarium (plural aquariums or aquaria) is a vivarium consisting of at least one transparent side in which water-dwelling plants or animals are kept. Fishkeepers use aquaria to keep fish, invertebrates, amphibians, marine mammals, turtles, and aquatic plants. The term combines the Latin root aqua, meaning water, with the suffix -arium, meaning "a place for relating to.
Aquarium
The main factors in keeping aquarium fish
Density of fish )Oxygen deficiency)
Physiologic and behavioral characteristics of fish
Factors water
diseases
•
Wonders of Creation
Axolotl اکسولوتل
نما انسان ماهی
HOW TO IDENTIFY A SICK FISH
• major physical factors affecting patient diagnosis and identification of fish are:
languishing Fish
did not escape the effects of stimulating or frightening
Swimming abnormal
separate from other fish and throw them
keep your mouth open
rub the body wall or floor
stay in the water level
AQUARIUM FISH DISEASES
• Fungal
• Bacterial(polydipsia)
(Nodular)
• Protozoan(Hexamita)
• Viral (Discus Plague-Black Disease)
(Fish Koi Herpes Virus)
• Discus (Symphysodon spp.) are a genus of three species of cichlid freshwater fish native to the Amazon River basin.[1] Discus are popular as aquarium fish and their aquaculture in sev.eral countries in Asia is a major industry.
Discus (fish)
Scientific classification
Kingdom: AnimaliaPhylum: ChordataClass: ActinopterygiiOrder: PerciformesFamily: CichlidaeSubfamily: CichlasomatinaeTribe: Heroini
Genus: Symphysodon
Species
PLAGUE-BLACK DISEASE
• Airborne virus refers to any diseases which are caused by pathogens and transmitted through the air
In September 1986, a new serious infection of certain cichlid species began appearing inwholesaler tanks all across the United States.
which appeared to have come inwith Southeast Asian fish.such as: discus, angels, uarus, severums and oscars
airborne infectiondisease spread within days to all tanks containing the sensitive species
suggesting
Within a short time, numerous pet stores and fish breeders who handled these species were also experiencing severe disease problems.
symptoms were found to have Hexamitiases
The body was black fish
VIRAL DISEASES
What is black disease? What is discus plague?
(Discus Plague-Black Disease)
Black disease also referred to as Discus Plague
disease caused by virus airborn
happens kill all fish
scratches Warden to the body
They stay just under the surface of water and breathe heavily
epidemic spread rapidly
• up-and-down in the aquarium
mucus
SYMPTOMS OF Discus Plague-Black Disease
• being timid fish
• The shy fish
• up-and-down in the aquarium
• Rapid breathing
• Increased mucous secretions
• Low Appetite fish
• Smelly in the aquarium
استرس ماهی خطوط بدن
• increased mucus in the body
•
aspirin, cold tablets, acid water, potassium
Secondary symptoms
1)Intestinal parasites and internal gills2) septicemia disease3) disease contemplating holes
4)black fish skin
5)Severe fin rot tail
After a viral illness
Treatment incresess Immune System
COMPLICATIONS
• After Treatment
1)Sterilization Vnaza
2)Lack of spawning fish infemale
3)blind
4)thin
5) low growth
KOI FISH
Koi varieties are distinguished by coloration. Some of the major colors are white, black, red, yellow, blue, and cream
. Various carp species were originally domesticated in East Asia,
(used as food fish)
The word koi comes from Japanese, simply meaning "carp". It includes both the dull grey fish and the brightly colored varieties
Differences from goldfish
KOI HERPESVIRUS (KHV):
• herpes-like virus designated koi herpesvirus
• (KHV) was f irst i sol ated in the USA in 1998.
, but not confirmed until later in 1999
• KHV is a DNA-based virus
• (KHV) in the family Alloherpesviridae
Susceptible stages of the host
All age groups of fish
Species: koi common carp hybrids and goldfish
Stability of the agent:
UV and 50°C for 1 minute ethyl alcohol at 30% for 20 minutes
mortalities in farmed fish
• Koi Herpesvirus (KHV) is a very
• damaging and easily spread virus that
• affects common carp and carp varieties
• such as koi carp. Outbreaks of the
• disease occur in summer, when water
• temperatures are high 25-23, and can kill
• between 20 per cent and 100 per cent of
• carp in a fishery. gill necrosis virus
KHV epidemics
KHV remains active in water for at least 4 hours,
nfectious titre of KHV within 3 days
ENVIRONMENTAL FACTORS
• water temperature
• virulence of the virus,
• condition of the fish
• population density
• stress factors (e.g. transportation, spawning, poor water quality)
• THE disease is temperature dependent (occurring between 16 and 25°C )
• high mortality at 28°C
• low temperatures may be reservoirs of the virus
• viral DNA was detected in the fish by PCR at 13°C,
Necrotic gills in common carp
15°C and 28°C
• Target organs and infected tissue:
• Gill, kidney, and spleen
• Vectors:• Water is the major abiotic vector. However, animate vectors (e.g. other fish species,
parasitic
• invertebrates and piscivorous birds and mammals) and fomites may also be involved in transmission.
LIFE CYCLE
• the gills are the major portal of virus entry in carp
• However, a more recent skin entry for KHV
systemic spread of the virus:skin and gills to the internalorgans and high levels of KHV DNA have been detected in kidney, spleen, liver and gut tissue
early stages of KHV infection: mucus
TRANSMISSION MECHANISMS
• The mode of transmission of KHV is horizontal but ‘egg-associated.
direct (fish to fish)
‘vertical
faeces, urine, gills andskin mucusVirulent virus is shed via
• infectious virus was continuously shed for a longer period
from infected common carp at 16°C than those at 23°C or 28°C
can be rapid: temperatures (23–25°C)
less rapid: below 23°C
The disease may manifest itself in 3 days
fish to a pond 8–21 days
SYMPTOMS OF KHV
• Symptoms of KHV include:• Gill mottling necrose
• Red and white patches appearing on gills
• Bleeding gills
• Sunken eyes
• Pale patches
• Blisters
• tissue, often with secondary infection of bacteria and fungi.
loss• balance, loss of mucus resulting in dry
DIAGNOSTIC METHODS
• Det ection of KHV by PCR
ELISA
• TEM
• [IF]not been extensively reported
THE BEST
no treatment
REFRENS1. 1)Manual of Diagnostic Tests for Aquatic Animals 2012 . KOI HERPESVIRUS DISEASE
• Chapter 2.3.6. — Koi herpesvirus disease .
• 2) Pokorova.D.etal.2005. Current knowledge on koi herpesvirus (KHV), Vet. Med. – Czech, 50, 2005 (4): 139–147 , Review Article
• 3) The Animal Welfare Act 2006 . Koi Herpesvirus (KHV)
• Disease.,
• 4)www.wikipedia
• 5)www.enviroment-agency.gov.uk
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