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Effects of Chicken Manure Extract on the Population Growth, Mixis Induction and Body Size of the Freshwater Rotifer Brachionus angularis Gosse 1851


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タイトル: Effects of Chicken Manure Extract on the Population Growth, Mixis Induction and Body Size of the Freshwater Rotifer Brachionus angularis Gosse 1851
著者: Ogello, Erick Ochieng / Hagiwara, Atsushi
発行日: 2015年12月31日
出版者: Asian Fisheries Society
引用: Asian Fisheries Science, 28(4), pp.174-185; 2015
抄録: This study investigated the effects of chicken manure extract (CME) on the population growth, mixis induction and body size of the freshwater rotifer Brachionus angularis Gosse 1851. Four concentrations of CME (i.e.0.5, 1.0, 2.0 and 3.0 ml.L-1), each in triplicate, were used in glass jars containing 20 mL of sterilised pond water. Thirty clones (24 h old) of B. angularis were placed in each jar and the specified concentrations of CME were added except in the control jars. Chlorella vulgaris Beijerinck 1890 (2.5x106 cells.mL-1) was supplied daily in all jars. The treatments were incubated at 25 oC in darkness for 7 days without exchanging water. CME significantly (P.L-1 but reduced the mixis induction rate. However, the CME did not significantly (P>0.05) affect the unfertilised mictic females. The specific population growth rate was significantly (P.L-1 of CME. The resting egg production decreased with increasing concentrations of CME. The lorica length increased at 3.0 mL.L-1 of CME but the lorica width was unaffected by CME. These results suggest that addition of 2.0 mL.L-1 of CME enhances the population growth and regulates lorica size; hence can be applied in the freshwater larviculture initiatives.
URI: http://hdl.handle.net/10069/36580
ISSN: 01166514
権利: (c) Asian Fisheries Society
資料タイプ: Journal Article
原稿種類: publisher
出現コレクション:085 学術雑誌論文

引用URI : http://hdl.handle.net/10069/36580

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