Acta Adriatica, Vol. 50 No. 1, 2009.
Izvorni znanstveni članak
Age, growth and length–weight relationship of Coelorinchus caelorhincus (Risso, 1810) in the Adriatic Sea
Igor Isajlović
; Institut za oceanografiju i ribarstvo, P.P. 500,
Nedo Vrgoč
; Institut za oceanografiju i ribarstvo, P.P. 500,
Barbara Zorica
; Institut za oceanografiju i ribarstvo, P.P. 500,
Melita Peharda
; Institut za oceanografiju i ribarstvo, P.P. 500,
Svjetlana Krstulović Šifner
; Sveučilišni centri za studije mora,
Corrado Piccinetti
; Laboratorij za biologiju mora i ribarstvo,
Sažetak
Samples of Coelorinchus caelorhincus were collected by bottom trawl during MEDITS (“Mediterranean International Trawl Survey”) in June 2003 in the northern and central Adriatic Sea. A total of 175 specimens of C. caelorhincus were used for analysis, of which 90 were males, 84 females and 1 indeterminate. Pre-anal length (PAL) in males ranged between 39 and 77 mm (x¯=50.91±7.63 mm) and in females between 29 and 115 mm (x¯=55.86±16.3 mm). The length-weight relationship for the whole sample was W=0.0004PAL2.65 (r2= 0.922) indicating negative allometric growth. The age structure of C. caelorhincus was determined from sagittal otolith readings. Maximum otolith length (LO) increased proportionally to fish length (LO=2.585+0.09PAL, r2=0.946). Age ranged from 2 to 8 years, with the majority of specimens being 3 (30%) and 4 (31%) years old. The von Bertalanffy growth parameters were: L∞ = 128 mm, K = 0.105 year-1 and t0 = -1.277 year.
Ključne riječi
age, growth; length-weight relationship; C. caelorhincus; Adriatic Sea
Hrčak ID:
40272
URI
Datum izdavanja:
1.7.2009.
Posjeta: 2.146 *