水产科学
水產科學
수산과학
FISHERIES SCIENCE
2009年
12期
789-791
,共3页
克氏原螯虾%受精卵%盐度
剋氏原螯蝦%受精卵%鹽度
극씨원오하%수정란%염도
Procambarus clarkii%fertilized egg%salinity
研究了不同盐度对克氏原螯虾受精卵孵化的影响.水温25 ℃条件下,盐度0～8时克氏原螯虾的受精卵均可孵出幼体.但以盐度0～4时孵化率较高,每个亲体平均孵出的幼体数量较多,高出此盐度范围时孵化率明显降低,且随着盐度升高,孵化时间延长.试验表明,0～4的盐度为克氏原螯虾孵化的适宜盐度,孵化率较高,孵化时间较短.
研究瞭不同鹽度對剋氏原螯蝦受精卵孵化的影響.水溫25 ℃條件下,鹽度0～8時剋氏原螯蝦的受精卵均可孵齣幼體.但以鹽度0～4時孵化率較高,每箇親體平均孵齣的幼體數量較多,高齣此鹽度範圍時孵化率明顯降低,且隨著鹽度升高,孵化時間延長.試驗錶明,0～4的鹽度為剋氏原螯蝦孵化的適宜鹽度,孵化率較高,孵化時間較短.
연구료불동염도대극씨원오하수정란부화적영향.수온25 ℃조건하,염도0～8시극씨원오하적수정란균가부출유체.단이염도0～4시부화솔교고,매개친체평균부출적유체수량교다,고출차염도범위시부화솔명현강저,차수착염도승고,부화시간연장.시험표명,0～4적염도위극씨원오하부화적괄의염도,부화솔교고,부화시간교단.
Experiments were conducted to examine the effects of salinity fluctuation on embryonic development of crayfish Procambarus clarkii. The fertilized zygotes were found to hatch out under the temperature of less than 25 ℃ and a salinity of 0～8. Higher hatching rates and more larvae were observed within salinity ranging from 0 to 4. Beyond this salinity range, however, the hatching rate dramatically decreased, and incubation period prolonged. Hence, a conclusion can be drawn from these experiments that salinity from 0 to 4 was particularly suitable for the embryonic development of the crayfish with relatively high hatching rate and short incubation period.
