Isolated Re-incubation of Five-Day Old White-Spotted Eggs of Chelonia Mydas in a Beach Hatchery: Is Hatch Rate Improved?.
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THE SARAWAK MUSEUM JOURNAL |
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Title :
Isolated Re-incubation of Five-Day Old White-Spotted Eggs of Chelonia Mydas in a Beach Hatchery: Is Hatch Rate Improved?. |
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Author :
C.H. Diong, S.S.L. Lim and C.M.U. Leh |
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Abstract:
Nineteen clutches of five-day old Chelonia mydas eggs in a beach hatchery were excavated to segregate fertile eggs from infertile eggs for re-incubation. Fertile eggs were selected on the basis of the development of a white spot on the eggshell. Three egg types were recognised: “spotted”, “un-spotted”, and mottled or “off-white” eggs. “Spotted” eggs and “un-spotted” combined with “off-white” eggs were re-incubated separately in two sub-clutches. Segregated fertile eggs had a significantly higher hatch rate than overall hatch rate, but not all fertile eggs hatched. Egg handling and smaller subclutch size did not appear to affect hatchability or overall hatch rate. The hypothesis that isolated re-incubation of “spotted” improved hatch rate was supported. The experimental technique may be used to recover fertile eggs from nests that are at risks from abnormal spring tides for artificial incubation.
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| DOI: XXXX |
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How to cite:
C.H. Diong et al. (1999). Isolated Re-incubation of Five-Day Old White-Spotted Eggs of Chelonia Mydas in a Beach Hatchery: Is Hatch Rate Improved?. The Sarawak Museum Journal, LIV (75) : 301-308 |
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References
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