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

• Autorzy: Aydin R , Calta M , Sen D
• Języki publikacji: EN

Abstrakty

EN

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.

PL

Celem badań było określenie wieku gatunku ryb karpiowatych, Capoeta trutta (Heckel 1843) zamieszkującego zbiornik Keban (Turcja) na podstawie łusek (rys. 1 i 2). Średnia długość ogonowa, określona na podstawie metody odczytów wstecznych, wynosiła: l₁=70,59, l₂=119,37, l₃=167,53, l₄=195,97, l₅=221,03, l₆=250,52, l₇=274,63, l₈=300,38 mm dla samców; l₁=68,87, l₂=117,03, l₃=166,34, l₄=203,91, l₅=230,17, l₆=248,20, l₇=267,98, l₈=294,69 mm dla samic; l₁=63,45, l₂=105,92, l₃=151,54, l₄=188,20, l₅=212,33, l₆=245,05, l₇=270,85, l₈=295,97 mm dla całej grupy ryb (tab. 1, rys. 3,4, 5). Długość ryb, w przypadku każdej grupy wiekowej, określona na podstawie odczytów wstecznych była zawsze mniejsza od rozmiarów rzeczywistych. Różnica ta wzrastała, gdy do obliczeń używano łusek od starszych osobników.

Słowa kluczowe

EN

fish; Lake Keban Dam; Pisces; Turkey; Cyprinidae; Capoeta trutta; growth; age; age determination

• Wydawca: -
• Czasopismo: Archives of Polish Fisheries
• Rocznik: 2003
• Tom: 11
• Numer: 2
• Opis fizyczny: p.237-243,fig.,ref.

Twórcy

autor

Aydin R

• University of Firat, Collage of Bingöl, Fisheries Program, Bingöl, Turkey

autor

Calta M

• University of Firat, Faculty of Fisheries, 23119-Elazig, Turkey

autor

Sen D

• University of Firat, Faculty of Fisheries, 23119-Elazig, Turkey

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