کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4397236 1305872 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Otolith accretion rates: Does size really matter?
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم آبزیان
پیش نمایش صفحه اول مقاله
Otolith accretion rates: Does size really matter?
چکیده انگلیسی

This study examined the relationship between otolith size and growth in juvenile cod (Gadus morhua L.). Two groups of juvenile cod were reared under different food ration and temperature regimes to obtain fish of similar somatic size but with different sized otoliths. The two groups were subjected to alternating temperature regimes and intermediate ration levels. Large otoliths grew significantly faster than the small ones and variation between individuals was extensive. The ratio of otolith growth during cold and warm temperature exposure did not differ between groups, and the observed growth pattern is therefore not attributable to differential growth within individual temperature periods. The ratio decreased with otolith size, presumably as a result of ontogenetic decrease in otolith protein composition. These results suggest that processes coupled to the metabolic rate of the endolymphatic epithelium are the key driver behind otolith growth.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Experimental Marine Biology and Ecology - Volume 362, Issue 2, 7 August 2008, Pages 131–136
نویسندگان
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