کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5763903 | 1412989 | 2017 | 26 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Nursery of young Litopenaeus vannamei post-larvae reared in biofloc- and microalgae-based systems
ترجمه فارسی عنوان
لاروهای جوان لیپوپنئوس حمامایمی پس از لارو در سیستم های مبتنی بر زیستی و مایکوپی
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موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم آبزیان
چکیده انگلیسی
A 13-day nursery trial was conducted to evaluate the performance of young Litopenaeus vannamei post-larvae (from PL6 to PL18) reared in both biofloc and microalgae-based systems at a stocking density of 67 PLs Lâ1. The effects of different concentrations of total suspended solids (TSS) on PL performance were also evaluated. One experimental group was reared in a conventional microalgae-based system with daily water exchange and daily addition of microalgae (herein called microalgae treatment). The other two experimental groups were reared using biofloc technology (BFT) with daily dextrose addition and no water exchange, but in the “Biofloc-500” treatment, TSS were maintained at around 500 mg Lâ1, while in the “Biofloc-700” treatment, TSS were maintained at around 700 mg Lâ1. Water quality variables remained within the appropriate range for larval culture. In microalgae treatment, ammonia control was likely associated with its assimilation into microalgae biomass and daily water exchange. In biofloc tanks, however, the addition of dextrose stimulated the production of bacterial biomass from ammonia. This system required only 12.9% of the water used by the microalgae treatment since water was not exchanged during the culture. The nursery of young PLs resulted in similar (P > 0.05) performance in all treatments: survival >94%, PL length â¼ 11.5 mm, and PL dry weight â¼ 1.2 mg. In addition, the salinity stress test (>90.0%) was not significantly different among treatments. Our results indicate that BFT can be as effective as the microalgae-based system for the nursery of young L. vannamei post-larvae. We also found that post-larvae performance was similar (P > 0.05) between biofloc treatments, indicating that organisms can tolerate environments with large quantities of solids.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Aquacultural Engineering - Volume 78, Part B, August 2017, Pages 140-145
Journal: Aquacultural Engineering - Volume 78, Part B, August 2017, Pages 140-145
نویسندگان
Rodrigo Schveitzer, Marco Antonio de Lorenzo, Felipe do Nascimento Vieira, Scheila Anelise Pereira, José Luiz Pedreira Mouriño, Walter Quadros Seiffert, Edemar Roberto Andreatta,