Life‐history traits of   A phanius danfordii  ( B oulenger, 1890) ( P isces:  C yprinodontidae), endemic to  K ızılırmak  B asin ( T urkey) | Zendy

Yoğurtçuoğlu B. | Zendy; Ekmekçi F. G. | Zendy

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Life‐history traits of A phanius danfordii ( B oulenger, 1890) ( P isces: C yprinodontidae), endemic to K ızılırmak B asin ( T urkey)

Author(s) -

Yoğurtçuoğlu B.,

Ekmekçi F. G.

Publication year - 2013

Publication title -

journal of applied ichthyology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.392

H-Index - 62

eISSN - 1439-0426

pISSN - 0175-8659

DOI - 10.1111/jai.12036

Subject(s) - fecundity , biology , gonadosomatic index , sex ratio , zoology , demography , population , sociology

Summary The life‐history traits of A phanius danfordii in H irfanlı R eservoir were studied on the basis of 2252 specimens caught between A pril 2008 and A pril 2009. Maximum age was determined as five years for both sexes. The overall sex ratio of males to females was 1 : 1.21; however, this ratio varied by age and season. Mean total length at age data derived from scale readings were used to estimate growth. The von Bertalanffy growth parameters were: L ∞ = 126.63 mm, K = −0.09, t 0 = 2.35 for females; and L ∞ = 61.2 mm, K = −0.19, t 0 = 2.76 for males. The gonadosomatic index ( GSI ) values indicated spawning to be from M ay to S eptember. Absolute fecundity varied from a minimum of 143 eggs for age one to a maximum of 698 eggs for age five. Relationships between fecundity–length and fecundity–weight were described by the equations: F = 0.0002 TL 3.3222 and F = 36.032 W 1.0053 , respectively. The equation of the relation between absolute fecundity and age was F = 25.372 t 1.2343 .

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