LIPID AND FATTY-ACID COMPOSITIONAL DIFFERENCES BETWEEN EGGS OF WILD AND CAPTIVE-BREEDING ALLIGATORS (ALLIGATOR-MISSISSIPPIENSIS) - AN ASSOCIATION WITH REDUCED HATCHABILITY
LIPID AND FATTY-ACID COMPOSITIONAL DIFFERENCES BETWEEN EGGS OF WILD AND CAPTIVE-BREEDING ALLIGATORS (ALLIGATOR-MISSISSIPPIENSIS) - AN ASSOCIATION WITH REDUCED HATCHABILITY
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DOI：
10.1111/j.1469-7998.1993.tb02712.x
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发表时间：
1993-08-01
影响因子：
2
通讯作者：
FERGUSON, MWJ
中科院分区：
文献类型：
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作者：
NOBLE, RC;MCCARTNEY, R;FERGUSON, MWJ
受精卵是从美国路易斯安那州的野生和圈养繁殖短吻鳄的巢穴中获得的。野生卵的胚胎孵化率为94%，而圈养卵的孵化率仅为50%。蛋黄的脂质和脂肪酸组成的分析表明，两组鸡蛋之间存在广泛的差异。特别是，从圈养鸡蛋蛋黄的脂质显示出相当低的水平的C20和C22多不饱和脂肪酸和较高水平的C18多不饱和脂肪酸比野生鸡蛋。更具体地说，n-6多不饱和化合物的总体水平增加的代价是n-3酸的圈养鸡蛋。鉴于C20和C22多不饱和脂肪酸在胚胎发育中的特殊作用，提出蛋黄脂肪酸组成的差异与孵化率的差异有关。
Fertile eggs were obtained from the nests of wild and captive-breeding alligators in Louisiana, USA. Whereas embryo hatchability of the wild eggs was 94%, in the captive eggs it was only 50%. Analysis of the lipid and fatty acid compositions of the yolks showed extensive differences between the two sets of eggs. In particular, the lipids of the yolks from the captive eggs displayed considerably lower levels of C20 and C22 polyunsaturated fatty acids and higher levels of C18 polyunsaturates than the wild eggs. More specifically, overall levels of n-6 polyunsaturates were increased at the expense of n-3 acids in the captive eggs. In view of the specific role of C20 and C22 polyunsaturated fatty acids in embryo development, it is proposed that the yolk fatty acid compositional differences and the difference in hatchability are associated.