The Korean Journal of Ecology

The Ecological Society of Korea (한국생태학회)
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Some Aspects of Laying, Incubation and Hatching in the Great Reed-Warbler

  • Yoo, Jeong-Chil (Korea Institute of Omithology and Department of Biology, Kyung Hee University) ;
  • Choi, Yu-Seong (Korea Institute of Omithology and Department of Biology, Kyung Hee University)
  • Published : 2002.08.01
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Abstract

During the breeding season of 1998, breeding ecology of the Great Reed-Warbler (Acrocephalus arundinaceus orientalis) was studied at Yangsoo-ri and Yongdam-ri of the Yangpyung-gun, Kyunggi province, Korea. Egg-weight (CV: 6.25) was more variable than either length or breadth, and breadth was the least variable of the measures. Significant variations in overall egg-weight occurred between clutches, and that more of the total variation in egg-weight and shape are due to inter-clutch variation as to intra-clutch variation when the data were pooled. The last egg tends to be larger than the remaining eggs in the clutch of the Great Reed-Warbler, suggesting the Great Reed-Warbler may adopt the brood-survival strategy. When method 3 was used, the most common incubation period is 12 days. In the Great Reed-Warbler, the length of the incubation period was related to clutch-size when method 1 (r=0.485, p<0.05) and method 2 (r=0.621, p<0.01) were employed, but not related to egg weight. The averagee number of days of hatching asynchrony was 2.5, raging 0.5~2.5. Asynchronous hatching was related to the clutch size (r=0.66, p<0.01). Hatching sequence was closely related to the laying sequence (r=0.93, p<0.001), suggesting Great Reed-Warblers incubate their eggs before clutch completion. The effect of egg weight on hatching asynchrony was found in Great Reed-Warblers (t-test, p<0.01).

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References

  1. Wilson Bulletin v.100 no.1 Successful incubation of experimentally enlarged clutches by House Wrens Baltz,M.E.;C.F.Thompson
  2. Wilson Bulletin v.97 no.1 Egg laying, incubation and hatching of the Common Gull (Larus canus) Barth,E.K.
  3. Behaviour v.17 no.SUP. Functional aspect of incubatin in the Herring Gull (Larus argentatus) Drent,R.H. https://doi.org/10.1163/156853961X00321
  4. Condor v.90 Intraclutch variation in egg weights of Piep-billed Grebes Forbes,M.R.L.;C.D.Ankney https://doi.org/10.2307/1368362
  5. Ecology v.57 Egg size, hatching asynchrony, sex, and brood reduction in the Common Grackle Howe,H.F. https://doi.org/10.2307/1935044
  6. Ecology v.59 Initial investment, clutch size, and brood reduction in the Common Grackle (Quiscalus quiscula L.) Howe,H.F. https://doi.org/10.2307/1938226
  7. The atural regulation of animal numbers Lack,D.
  8. Ecolongical Adaptations for Breeding in Birds Lack,D.
  9. Biological Review v.65 Hatching asynchrony in altricial birds Magrath,R.D. https://doi.org/10.1111/j.1469-185X.1990.tb01239.x
  10. Ornis Fennica v.58 Egg size variation within passerine clutches: effects of ambient temperature and laying sequence Ojanen,M.;M.Orell;R.A.V. is nen
  11. American Naturalist v.139 A revision of Lack's brood reduction hypothesis Pijanowski,B.C. https://doi.org/10.1086/285386
  12. Bird-Banding v.46 Growth and development of Eastern Bluebird Pinkowski,B.C. https://doi.org/10.2307/4512159
  13. Auk v.105 Asynchronous hatching and food limitation: a test of Lack's hypothesis Skagen,S.K.
  14. Auk v.1091 On the adaptive value of intraclutch egg-size variation in birds Slagsvold,T.;J.Sandvik;G.Rofstad;O.Lorentsen;M.Husby
  15. Animal Ecology v.58 Constraints of hatching asynchrony and egg size in Pied Flycatchers Slagsvold,T.;J.T.Lifjeld https://doi.org/10.2307/5127
  16. Ph. D. Thesis. University of Oxford Some aspects of the ecological significance of egg size and composition in the Great and Blue Tit Parus major and P. caeruleus Yoo,J.C.