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ISSN : 2287-8327

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Vol.29 No.6
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Egg Retrieval as a Source of Nests with Supernormal and Mixed Egg Clutch in Little Terns Sterna albifrons

Journal of Ecology and Environment / Journal of Ecology and Environment, (P)2287-8327; (E)2288-1220
2006, v.29 no.6, pp.545-550


Graham R. Fulton (School of Natural Sciences, Centre for Ecosystem Management, Edith Cowan University)

Graham, R. F. , & (2006). Egg Retrieval as a Source of Nests with Supernormal and Mixed Egg Clutch in Little Terns Sterna albifrons. Journal of Ecology and Environment, 29(6), 545-550.
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Abstract

T Sterna albifrons and seven clutches having mixed eggsby little terns and kentish plovers Charadrius alexandrinus were recorded during the breeding seasons of 2003 ～2005 at Ganwol lake, Hongsung-gun, Chungcheongnam-do, Korea. The frequency of egg retrieval by Little Terns was higher after the second egg laying regardless of the clutch size and incubation stage. The frequency of egg retrieval was high at all incubation stage. When experimental eggs were placed within 15 cm from the nests, the percentage of egg retrieval was highest (almost 100%). However the percentage dropped rapidly over 35～5 cm range and finally to zero at 60 cm distance. Little terns retrieved all kinds of eggs set near their nests regardless of its kind or size. This study suggests that egg retrieval by little terns may be a source of the nest with supernormal and mixed egg clutch observed in this species.

keywords
Egg retrieval, Little tern Sterna albifrons, Nest with mixed eg clutch, Nest with supernormal clutch김정훈 등 J. Ecol. Field Biol. 29 (6) 546조사 지역 및 방법조사지 개황본 연구는 충남 홍성군 서부면 간월호 내의 모래섬 (36 37' 01" N, 126 27' 40" E)에서 수행되었다. 쇠제비갈매기의 번식군집이 형성된 모래섬의 면적은 약

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