Assimilation efficiencies of White-chinned petrels (Procellaria aequinoctialis) fed differnt prey
Assimilation efficiencies of White-chinned petrels (Procellaria aequinoctialis) fed differnt prey
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白颊海燕 (Procellaria aequinoctialis) 喂养不同猎物的同化效率
DOI：
10.1016/0300-9629(86)90254-9
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发表时间：
1986
期刊：
影响因子：
--
通讯作者：
S. Jackson
中科院分区：
文献类型：
--
作者：
S. Jackson
5只白颌海燕（Procellaria aequinoctialis）雏鸟对轻鱼、鱿鱼和南极磷虾的平均同化效率分别为77.9、74.4和76.0%。校正氮潴留后，光鱼的AE值为69.1%，鱿鱼为68.0%，南极磷虾为67.5%。不同猎物类型声发射的差异可能与猎物组织中氮含量的差异有关。作为一种特殊的喂食者，驴企鹅对鱼和鱿鱼的同化效率值比白颌海燕对这些食物类型的同化效率值差异更大。白下巴海燕的一般饮食可能解释了它能够以相似的效率吸收不同类型的猎物的能力。
Mean assimilation efficiencies (AE) of 5 white-chinned petrel (Procellaria aequinoctialis) fledglings fed on light-fish, squid and Antarctic krill were 77.9, 74.4 and 76.0%, respectively. After correction for nitrogen retention, AE values decreased to 69.1% for light-fish, 68.0% for squid, and 67.5% for Antarctic krill. Differences in AE for different prey types may result from differential N content of the prey tissue. Assimilation efficiency values for fish and squid of a specialized feeder, the jackass penguin, differ more than the AEs of white-chinned petrels for these food types. The generalized diet of the white-chinned petrel may account for its ability to assimilate widely different prey types with similar efficiencies.