Wyniki wyszukiwania

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Active chloride cell density in some tissues of rainbow trout [Oncorhynchus mykiss Walbaum, 1792] larvae during the early development stage

100%

Calta M.

Folia Biologica

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2002

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tom 50

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nr 1-2

2

The effects of ambient magnesium concentration on the embryonic and prelarval development of mirror carp [Cyprinus carpio L., 1758]

63%

Calta M., Ural M. S.

Archives of Polish Fisheries

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2001

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tom 09

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nr 1

In this study, fertilized mirror carp eggs were allowed to develop in fresh water with various magnesium concentrations (0.05, 0.2 and 2 mg l⁻¹). The percentage of dead (eggs+prelarvae) and deformed prelarvae increased sharply to 94% at an ambient magnesium concentration of 0.05 mg l⁻¹ compared with 22 and 10% at ambient magnesium concentrations of 0.2 mg l⁻¹ and 2.0 mg l⁻¹, respectively. Mirror carp require more than a 0.05 mg l⁻¹ ambient magnesium concentration for survival and successful development during the early life stage. The whole body magnesium and calcium concentrations of the developing prelarvae were dependent on the ambient magnesium concentration. The uptake of magnesium by animals decreased and the uptake of calcium increased with decreasing ambient magnesium concentrations. However, the uptake of the sum of these two divalent ions seemed to be independent of ambient magnesium concentration. This indicates that there is competition between magnesium and calcium for uptake into developing embryos.

3

Relationships between fish length and otolith length in the population of Capoeta capoeta umbla [Heckel, 1843] inhabiting Hazar Lake, Elazig, Turkey

51%

Sen D., Aydin R., Calta M.

Archives of Polish Fisheries

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2001

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tom 09

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nr 2

In this study, the relationships between otolith length and fish length (total, fork and standard) of a total of 251 specimens of the Capoeta capoeta umbla (Heckel, 1843) (Cyprinidae) species inhabiting Hazar Lake were examined.The otolith lengths were measured for the whole otolith (in an anterior to posterior direction) by using an ocular microscope with a micrometer.There was a strong relationship between the otolith lengths and fish lengths obtained.

4

Age and growth of Capoeta trutta [Pisces: Cyprinidae] from Keban Dam Lake, Turkey

51%

Aydin R., Calta M., Sen D.

Archives of Polish Fisheries

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2003

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tom 11

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nr 2

In this study the ages of Capoeta trutta (Heckel 1843) inhabiting Keban Dam Lake were determined from scales. The mean fork lengths determined using the back-calculation method were l₁=70.59, l₂=119.37, l₃=167.53, l₄=195.97, l₅=221.03, l₆=250.52, l₇=274.63 and l₈=300.38 mm for males, l₁=68.87, l₂ =117.03, l₃=166.34, l₄=203.91, l₅=230.17, l₆=248.20, l₇=267.98 and l₈=294.69 mm for females, l₁=63.45, l₂=105.92, l₃=151.54, l₄=188.20, l₅=212.33, l₆=245.05, l₇=270.85 and l₈=295.97 mm for all fish samples. The calculated length of any of the age groups was always smaller than the real length measured for the same age group. The gap between calculated and measured lengths increased when the scales of older fish were used in the calculations.

Ograniczanie wyników

3 Archives of Polish Fisheries

1 Folia Biologica

4 Calta M.

2 Aydin R.

2 Sen D.

1 Ural M. S.

1 2003

1 2002

2 2001

Active chloride cell density in some tissues of rainbow trout [Oncorhynchus mykiss Walbaum, 1792] larvae during the early development stage

The effects of ambient magnesium concentration on the embryonic and prelarval development of mirror carp [Cyprinus carpio L., 1758]

Relationships between fish length and otolith length in the population of Capoeta capoeta umbla [Heckel, 1843] inhabiting Hazar Lake, Elazig, Turkey

Age and growth of Capoeta trutta [Pisces: Cyprinidae] from Keban Dam Lake, Turkey