Effects of two harm ful species algae on reproduction of rotifer Brachionus plicatilis and metamorphosis of zoea of Chinesem itten handed crab Eriocheir sinensis
YANG Xia1,SUN Na2,LIYong-han1,LIXiao-dong2
1.College of Fisheries and Life Science,Dalian Ocean University,Dalian 116023,China;2.Panjin Guanghe Crab Industrial Co.Ltd.,Panjin 124200,China
Abstract: The toxicity and effects of two harmful species algae Heterocapsa sp.and Gymnodinium sp.on reproduction of rotifer Brachionus plicatilis and metamorphosis of zoea were studied in Chinesemitten handed crab Eriocheir sinensis at various developmental periods of the zoea at water temperature of 22-25℃.The results showed that there wasmetamorphosis rate of 13.33%in the zoeaⅠ and zoeaⅡ at Gymnodinium sp.density of 2.000×105cells/mL,without significant toxicity of Gymnodinium sp.to zoeaⅢafterwards.The zoea Ihadmetamorphosis rate of 11.67%at Heterocapsa sp.density of2.000×105cells/mL.No eggswere observed in the rotifer cultured at the two alga density of1.728×105cells/mLwithin 96 hours.At the two alga density of0.288×105cells/mL,however, there were as high 5 times and 8 times as the initial number of the rotifer within 96 hours.The findings indicated that the two algae impacted on survival and development of early zoea of Chinesemitten handed crab,and thathigher density rotifers controlled the growth of harmful algae by feeding.
杨霞, 孙娜, 李永函, 李晓东. 两种有害藻对轮虫繁殖和中华绒螯蟹溞状幼体变态率的影响[J]. 大连海洋大学学报, 2015, 30(4): 351-356.
YANG Xia, SUN Na, LIYong-han, LIXiao-dong. Effects of two harm ful species algae on reproduction of rotifer Brachionus plicatilis and metamorphosis of zoea of Chinesem itten handed crab Eriocheir sinensis. Journal of Dalian Ocean University, 2015, 30(4): 351-356.
2015, Vol. 30 
