Life history traits and food supplementation affect productivity in a translocated population of the endangered Hihi (Stitchbird, Notiomystis cincta)
Autor: | Brice Ebert, Richard A. Griffiths, Isabel Castro, Karen M. Mason, Dianne H. Brunton |
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Rok vydání: | 2003 |
Předmět: |
Avian clutch size
education.field_of_study biology Ecology media_common.quotation_subject Population Fledge food and beverages biology.organism_classification Bird egg Notiomystis cincta Animal science Repoblación Nest embryonic structures behavior and behavior mechanisms Reproduction education reproductive and urinary physiology Ecology Evolution Behavior and Systematics Nature and Landscape Conservation media_common |
Zdroj: | Biological Conservation. 114:271-280 |
ISSN: | 0006-3207 |
DOI: | 10.1016/s0006-3207(03)00046-6 |
Popis: | We studied the effect of food supplementation, female age and clutch order on productivity in a translocated species. Food supplementation increased clutch size from 3.9 to 4.4 (average) eggs per nesting attempt, and more than doubled fledging and recruitment success. Supplemented females started a second clutch 9 days sooner after fledging first clutch chicks than unfed females. During second clutches, supplemented females incubated the eggs for a shorter period of time (15.2 days vs. 16.8). Older females laid larger clutches (4.6 vs. 3.7 eggs) than yearlings and incubated second clutch eggs for a shorter period (15.4 vs. 16.6 days). Females laid more eggs in first clutches (4.2 vs. 3.8 eggs), and those eggs took approximately 30% longer to lay than eggs in second clutches. The successful maintenance of hihi populations on the available islands may be dependent on the permanent provision of supplemental food at nest sites. |
Databáze: | OpenAIRE |
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