Allometric growth and condition factor of Atlantic cod (Gadus morhua) fed to satiation: effects of temperature and body weight

Content Provider	Semantic Scholar
Author	Árnason, Tómas Björnsson, Birkir Steinarsson, Agnar
Copyright Year	2009
Abstract	Summary The effect of thermal environment on condition factor was examined for six different size-classes of Atlantic cod Gadus morhua fed to satiation. A weight–length relationship for 8 to 1303 g fish reared at 4–20� C indicated an allometric growth (W = aL b , a = 0.0045, b = 3.257) of cod. Changes in relative condition factor (Krel) with temperature were described with a second order polynomial. The most pronounced effect of temperature on body condition was found in the smallest size-classes, but the curves flattened with increased size. Temperature had size-dependent effects on the relative condition factor obtained from an overall weight–length relationship for all fish in the experiment, i.e. Krel increased with weight at 4� C, but decreased with weight at 16 and 20� C. Krel remained high for most size-classes at 8 and 12� C. The slopes (b-values) of the weight–length relationships decreased linearly with temperatures from 4 to 16� C.
Starting Page	401
Ending Page	406
Page Count	6
File Format	PDF HTM / HTML
DOI	10.1111/j.1439-0426.2009.01259.x
Volume Number	25
Alternate Webpage(s)	http://www.hafro.is/Bokasafn/Greinar/j_appl_ichthyol_25-401.pdf
Alternate Webpage(s)	https://doi.org/10.1111/j.1439-0426.2009.01259.x
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article