کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5763938 | 1625694 | 2017 | 30 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The effect of light intensity on performance of larval pike-perch (Sander lucioperca)
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
NTUSbiRASSRDDPHGMAMS222Aquaculture - آبزی پروریdays post hatch - روزه گرفتنPikeperch - سیب زمینیRecirculation aquaculture systems - سیستم های آبزی پرورش گردش خونSwim bladder inflation - شنا کردن تورم مثانهstandard length - طول استانداردFca - فاکسNatural mortality - مرگ و میر طبیعیFeed consumption - مصرف خوراکIllumination - نورپردازیnephelometric turbidity units - واحدهای کدورت غیرفلومتریکdry weight - وزن خشک
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم آبزیان
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
In this work performance parameters of larval pike-perch (Sander lucioperca) reared under four different light intensities (100, 500, 1000 and 2500Â lx) until 21Â days post hatch (dph) were investigated. As performance parameters change in length and weight, swim bladder inflation, feed consumption, natural mortality, stress induced mortality and RNA-DNA ratio were measured. Aim was to investigate the influence of light intensity on pike-perch performance during the first three weeks of larval rearing. Significant differences were found in natural and stress induced mortality as well as in weight growth. No single light exposure level combined optimal performance of all tested performance parameters. Highest light intensity of 2500Â lx showed good weight growth but an increase in stress induced mortality. Bright light of 500 and 1000Â lx intensity was found to improve growth and stress mortality whereas dim light conditions of 100Â lx showed significantly lower natural mortality. Thus data suggested that most favorable illumination during larval pike-perch rearing comprise a tradeoff between optimal natural mortality under dim light conditions (100Â lx) or optimal larval growth and stress resistance under bright light conditions (500 and 1000Â lx). It is shown that high light intensities during larval rearing can be beneficial for pike-perch rearing if offspring supply is not limited.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Aquacultural Engineering - Volume 77, May 2017, Pages 61-71
Journal: Aquacultural Engineering - Volume 77, May 2017, Pages 61-71
نویسندگان
Moritz Tielmann, Carsten Schulz, Stefan Meyer,