Baker S M, Mann R
Biol Bull. 1992 Apr;182(2):265-269. doi: 10.2307/1542120.
The effects of hypoxia (1.5 mg O2 1-1, 20% of air saturation) and anoxia (<0.07 mg O2 1-1, <1% of air saturation) on oyster (Crassostrea virginica) larval settlement, juvenile growth, and juvenile survival were studied. Settlement was reduced significantly (P < 0.05) in hypoxic treatments, as compared to normoxic treatments (7.3 mg O2 h-1, 100% of air saturation), and almost no settlement took place in anoxic treatments. After 96 h, 38% and 4% of the larvae placed in hypoxic and anoxic treatments had settled, while 79% settled in normoxic treatments. In the first 144 h after settlement, juveniles in hypoxic treatments grew one third as much as those in normoxic treatments, while juveniles in anoxic treatments did not grow at all. Median mortality times of recently settled juveniles in hypoxic and anoxic treatments were 131 h and 84 h, respectively. We conclude that hypoxic and anoxic waters have potentially detrimental effects on oyster settlement and recruitment.
研究了缺氧(1.5毫克氧气/升,空气饱和度的20%)和无氧(<0.07毫克氧气/升,<空气饱和度的1%)对牡蛎(弗吉尼亚巨蛎)幼体附着、稚贝生长和稚贝存活的影响。与常氧处理(7.3毫克氧气/升,空气饱和度的100%)相比,缺氧处理中的附着显著减少(P<0.05),无氧处理中几乎没有发生附着。96小时后,置于缺氧和无氧处理中的幼体分别有38%和4%附着,而常氧处理中有79%附着。在附着后的前144小时内,缺氧处理中的稚贝生长速度仅为常氧处理中稚贝的三分之一,而无氧处理中的稚贝根本没有生长。最近附着的稚贝在缺氧和无氧处理中的半数死亡时间分别为131小时和84小时。我们得出结论,缺氧和无氧水域对牡蛎的附着和补充具有潜在的有害影响。