PARA FINALS KAYA MO YAN

Ichthyobodo necator

lives in large numbers on the skin, fins, and gills

attacks all freshwater fish species

Disease: Costiosis/Ichthyobodosis - light gray blue film or red patches on the skin, brown coloration of the gills

Cryptobia spp

biflagellate trypanosome-like forms of fresh water and marine fish

cyclical vectors- leeches

Cryptobia borreli

Cryptobia branchialis

Cryptobia cyprini

Cryptobia salmositica

species of cryptobia spp.

Cryptobia cyprini

sleeping sickness of goldfish

Cryptobia salmositica

rainbow trout

Hexamita sp

flagellates that have pyriform body and 2 nuclei; there are 6 anterior flagella, 2 posterior flagella, and 2 axostyles

“hole in the head disease”

Dinozoans

single-celled planktonic organisms mainly occuring in the marine environment

2 dissimilar flagella

Amyloodinium

cause velvet disease/ gold dust disease

Ichthyophthirius multifiliis

affects the skin and the gills of most fresh water fresh species

3 forms/stages - trophozoites, cyst. tomites

causes: white spot disease/ichthyophthiriosis

Cryptocaryon irritans

saltwater counterpart of I. multifiliis causing

‘salt water ich’; macronucleus is multilobular

Trichodina spp.

flat, disc-like ciliates possessing an oral ciliature with three ciliary girdles, and chitinoid attaching disc with radially arranged hooked teeth or denticles

Heteropolaria colisarum

a colonial, sessile ciliate with an inverted bell-shaped body mounted upon

branched non-contractile stalk

causes ulcers or cotton like growth or hole on the side disease

Pleistophora hyphessobryconis

causes neon fish disease

Ichthyosporidium giganteum

forms xenoma-like tumors in the connective tissues of corkwing

and spot

Nosema spp.

microsporidian that produce tumors in the ganglia of the cranial and spinal nerves of angler fish and gills of haddock.

Pseudoloma neurophila

Katataia sp.

Microsporidium seriolae

Other xenoma-forming microsporidians

coccidia

mostly occur in the git but some in other organs like liver

Octosporella

oocysts with 8 sporocysts each containing 2 sporozoites

Myxobolus cerebralis

causes whirling disease in salmonids

affects the cartilage and perichondrium, and invasion of the cartilaginous capsule of the semicircular canals result in loss of equilibrium and tail chasing

Henneguya spp.

cysts are found in the gills in channel catfish

Henneguya zschokkei

causes boil disease in salmonids

Tetracapsuloides (formerly Tetracapsula) bryosalmonae

causes proliferative kidney disease (PKD), formerly called proliferative kidney xenoma (PKX), in trouts and salmon

Argulus spp

fish lice

Ergasilus spp.

gill maggots

Lernaea spp.

Anchor worms

infect a variety of freshwater fish being attached in the host skin

Caligus epidemicus

most dangerous species in the philippines infesting groupers, pompano, sea bass, rabbitfish, and tilapia

Cyamus spp.

whale lice

sarcocystis neurona and toxoplasma gondii

parasites of dolphins and seals