수온, 염분 및 보관방법에 따른 한국산 Rotifer, Brachionus plicatilis (S-type) 내구란의 부화율
박흠기, 허성범
Abstract
박흠기, 허성범
Abstract
The effect of temperatures (24~36℃) and salinities (5~30 ppt) on hatching rate of resting egg of the Korean rotifer, Brachionus plicatilis was investigated. The highest hatching rate of the resting egg was 85.7% at 28℃ and 15 ppt. The hatching rates of the resting eggs with salinities were not significant at 32℃ and 36℃. Hatching was faster at higher temperature. The resting eggs stored at 5℃ in dark hatched simultaneously within two days, however, those at 28℃ in dark hatched intermittently within 14 days. But, final hatching rate of the resting egg at 28℃ was higher at 28℃ than that at 5℃. With regard to drying temperature and time of resting egg, the resting egg dried at 30℃ for 1 hour showed the highest hatching rate (46.4%).
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The effect of temperatures (24~36℃) and salinities (5~30 ppt) on hatching rate of resting egg of the Korean rotifer, Brachionus plicatilis was investigated. The highest hatching rate of the resting egg was 85.7% at 28℃ and 15 ppt. The hatching rates of the resting eggs with salinities were not significant at 32℃ and 36℃. Hatching was faster at higher temperature. The resting eggs stored at 5℃ in dark hatched simultaneously within two days, however, those at 28℃ in dark hatched intermittently within 14 days. But, final hatching rate of the resting egg at 28℃ was higher at 28℃ than that at 5℃. With regard to drying temperature and time of resting egg, the resting egg dried at 30℃ for 1 hour showed the highest hatching rate (46.4%).
Key concepts: Brachionus, Hatching, Rotifer, Biology, Animal science, Ecology, Zoology