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The Food Resources and Foraging Sites of Pacific Reef Herons(Egretta sacra) in Jeju Island, Korea  

Kim, Wan-Byung (Folklore and Natural History Museum, Jeju Special Self-Governing Province)
Oh, Hong-Shik (Dept. of Science education, Jeju National University)
Publication Information
Korean Journal of Environment and Ecology / v.23, no.6, 2009 , pp. 564-568 More about this Journal
Abstract
The principal objective of this study was to determine and characterize the food resources and foraging sites of Pacific Reef Herons bred in Aewol-eup, Jeju Island, during Feb. 2005 ~ Aug. 2005. The food resources of Pacific Reef Herons were identified as comprising 21 individuals of 5 species, and these identifications were verified as follows: 38.1% of Tridentoger obscurus(n=8), 19.0% of Ennedpterygius etheostomus(n=4), and 14.3% of Engraulis japonica(n=3). The sizes of the food resources were measured as follows: total $58.29{\pm}5.17mm$(n=19), T. obscurus was $67.49{\pm}4.91mm$(n=8), E. etheostomus was $43.98{\pm}3.50mm$(n=4), and E. japonica was $22.77{\pm}1.17mm$. The semi-digested foods were confirmed as Paralichthys olivaceus and Sebastes inermis. The primary foraging sites were 7.4km(Oedocheon) east, to 6.6km(Geumseongcheon) west of the Aewol breeding area.
Keywords
AEWOL-UP; TRIDENTOGER OBSCURUS; BREEDING AREA;
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Times Cited By KSCI : 1  (Citation Analysis)
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