Category: Fisheries

Procamallanus sp. (Baylis, 1923) 0

Procamallanus sp. (Baylis, 1923)

Procamallanus sp. (Baylis, 1923)   It is a Nematode parasite, generally found in the intestine. Body cylindrical, filiforms and covered with a strong protecting cuticle which is flexible. Mouth is dorsoventrally slight bounded by...

Lytocestus spp. (Cohn, 1908) 0

Lytocestus spp. (Cohn, 1908)

Lytocestus spp. (Cohn, 1908) Lytocestus sp. is a parasite. It is known as “Entire worm”. Body elongated, dorsoventrally flattened, unsegmented leaf like. Tapering anteriorly into scolex, head consists of scolex and neck, scolex variable...

Gyrodactylus sp. (von Nordmann, 1831) 0

Gyrodactylus sp. (von Nordmann, 1831)

Gyrodactylus sp. (von Nordmann, 1831) It is another Monogenean parasite, well known as skin fluke. Body length 0.400-0.413 mm and width 0.124-0.133 mm. Body ventrally flattened. Anterior end of body has two points and...

Dactylogyrus sp. (Diesing, 1850) 1

Dactylogyrus sp. (Diesing, 1850)

Dactylogyrus sp. (Diesing, 1850) Dactylogyrus sp. is one of the biggest genera of Monogenean parasite. It is well known as gill fluke. Body elongated, length 0.287-0.395 mm and width 0.69 – 0.91 mm. They...

Trichodina sp. (Ehrenberg, 1831) 1

Trichodina sp. (Ehrenberg, 1831)

   Trichodina sp. (Ehrenberg, 1831) Trichodina sp. is a Protozoan parasite. Body cup shaped, diameter 17.0— 61.8 µm. Adhesive disc concave diameter 13.7—48.5 µm.. Adoral ciliary spiral 395—400. Free swimming with numerous long cilia...

RELATIONSHIP BETWEEN HOST FISHES AND THEIR PARASITES 2

RELATIONSHIP BETWEEN HOST FISHES AND THEIR PARASITES

RELATIONSHIP BETWEEN HOST FISHES AND THEIR PARASITES    The influence of parasite on its host        Every parasite living in or a fish exerts some degree of harmful influence on its host. This influence...

ISOLATION OF BACTERIA FROM  TILAPIA FISH (Oreochromis nilotica) 0

ISOLATION OF BACTERIA FROM TILAPIA FISH (Oreochromis nilotica)

ISOLATION OF BACTERIA FROM  TILAPIA FISH (O.nilotica) Abstract The present study was conducted to isolate, culture and identification (by gram staining) of bacteria from diseased fish Tilapia (  Oreochromis  niloticus).In the present study, monthly...

Biology of the Crab 2

Biology of the Crab

INTRODUCTION Crabs are found in the aquatic ecosystem. Aquatic ecosystem is two types: Fresh water ecosystem and Marine water ecosystem. We investigated the biology of the freshwater crab. Freshwater crabs are included in the...

About an Electric ray or torpedo 1

About an Electric ray or torpedo

Classification: Phylum: chordate Group: vertebrata Subphylum: Gnathostomata Series: Pisces Class: Elasmobranchi Order: Torpediniformes (Electric organ present between head and pectoral fins, pre-orbital cartilages greatly enlarged) Genus: Torpedo or Astrape Geographical distribution: torpedo is found...

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