Seasonal Changes in Abundance of Dactylogyrus extensus and D. minutus (Monogenea) on Cultured Carp

Helminth infections in common carp, Cyprinus carpio L., 1758 (Cyprinidae) from Kovada Lake (Turkey).

The aim of this study which was carried out from March 2003-February 2004 was to determine the parasites of carp (Cyprinus carpio L., 1758) inhabiting the Kovada Lake. During the study, a total of 63 common carps were caught in different regions of Kovada Lake each month and investigated parasitologically. In carps, the ectoparasite, Dactylogyrus minutus of Monogenea, was found and endoparasite...

Seasonal testicular changes in Dendropsophus minutus Peters, 1872 (Anura, Hylidae).

The reproductive cycle in anurans may be either continuous or discontinuous. These differences may be connected to seasonal climate changes and/or to anthropic activity. Forty adult male individuals of the Dendropsophus minutus species were collected during one year, in the municipality of Chapada dos Guimarães (Mato Grosso, Brazil). The testicles were studied under light and transmission elect...

Seasonal changes of pronephros lymphoid tissue in grass carp (Ctenopharingodon idella): a histometrical and histological study

The major lymphoid tissues in teleost fish are the kidneys, thymus, spleen and mucosa-associatedlymphoid tissue including the skin, gills and intestine. The head of kidney (pronephros) is an importanthaematopoietic organ and has morphological similarities with the bone marrow in higher vertebrates. In thisstudy, during 12 months from August 2002 to July 2003, 120 grass carp (10 fish/month) were...

Metazoan parasites of the common carp (Cyprinus carpio L., 1758) from Tahtalı Dam Lake (İzmir).

OBJECTIVE The aim of this study was identification of the parasites of the common carp from Tahtalı Dam Lake. METHODS The fish were transported live to the laboratory. They were investigated for ectoparasites and endoparasites. The parasite specimens were fixed and identified. RESULTS During the study, 47 common carp were caught monthly and 3 species of metazoan parasites were found: Dactyl...

Short communication-Seasonal changes of blood serum ions in Beluga (Huso huso) Cultured in Brackish Water