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Articles 61 - 62 of 62
Full-Text Articles in Life Sciences
Larval Rearing Of The Black Sea Turbot, Scophthalmus Maximus (Linnaeus, 1758), Under Laboratory Conditions, Temel Şahi̇n
Larval Rearing Of The Black Sea Turbot, Scophthalmus Maximus (Linnaeus, 1758), Under Laboratory Conditions, Temel Şahi̇n
Turkish Journal of Zoology
To establish a seed production technique for Black Sea turbot, Scophthalmus maximus, eggs and larvae were observed under artificial rearing conditions. Larvae were obtained artificially from eggs of tank-held broodstock. The egg fertilization was 27.6% and the fertilized eggs were 1.213±0.063 mm in diameter, were spherical pelagic and had one oil globule. From an initial length of 3.12±0.14 mm on day 0, the larvae grown to 167.28±15.32 mm in the normal group and to 159.98±12.25 mm in the abnormal group on day 246. The feeding regime consisted of Nannochloropsis oculata, Brachionus plicatilis, Artemia, and granule feed. The survival rates were …
Certain Reproductive Characteristics Of The Catfish (Clarias Gariepinus Burchell, 1822) Living In The River Asi, Turkey, Şükran Özdi̇lek Yalçin, Kemal Solak, İhsan Akyurt
Certain Reproductive Characteristics Of The Catfish (Clarias Gariepinus Burchell, 1822) Living In The River Asi, Turkey, Şükran Özdi̇lek Yalçin, Kemal Solak, İhsan Akyurt
Turkish Journal of Zoology
A total of 523 C. gariepinus caught in the River Asi were surveyed from October, 1996 to September, 1998 to find out the age distribution throughout the population that varied between 0+ and 5 years of age, with the one year age group observed to be dominant in number. Findings also showed that both sexes started to reach maturity at the age of 1, and all the fishes examined had become mature by the end of the second year. The average diameter of ripened eggs was 1.41 - 1.66 mm. They spawned in a period from May to August when …