Assimilation efficiency of Rhinoceros Auklet (Cerorhinca monocerata) chicks fed Japanese anchovy (Engraulis japonicus) and Japanese sand lance (Ammodytes personatus).
We investigated the assimilation efficiency (AE) of a piscivorous alcid, Rhinoceros Auklet (Cerorhinca monocerata), chicks when fed Japanese anchovy (Engraulis japonicus) and Japanese sand lance (Ammodytes personatus), which are their main prey species. The assimilation efficiency corrected for nitrogen retention (NR) of the chicks fed sand lance (81.6%) was significantly higher than those fed anchovy (78.0%). The values of assimilation efficiencies for both fish species are similar to those of fish-fed seabird adults and fledglings.
Japan Society for the Promotion of Science, Hokkaido National Fisheries Research Institute, Kushiro 085-0802, Japan. niizuma@ccmfs.meijo-u.ac.jp
Yasuaki
Y
Niizuma
Orio
O
Yamamura
D000821:Animal Feed; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D046090:Anseriformes / Q000033:anatomy & histology* / Q000502:physiology*; D001717:Birds; D005399:Fishes; D009584:Nitrogen / Q000378:metabolism; D010473:Perciformes / Q000378:metabolism*
D009584:Nitrogen