Removal indeterminacy and the proximate determination of clutch size in the House Sparrow
Article Abstract:
A study of clutch size and removal indeterminacy of House Sparrows revealed the indeterminate pattern of laying eggs and the influence of endogenous energy reserves on the clutch size of these birds. Egg production in the species was directly influenced by the levels of exogenous and nutrient energy resources and only to a marginal degree by the female's endogenous reserves. The quantity of lipid reserves determine the clutch size in the females.
Publication Name: The Condor
Subject: Biological sciences
ISSN: 0010-5422
Year: 1995
User Contributions:
Comment about this article or add new information about this topic:
Seasonal decline in clutch size of the barnacle goose in Svalbard
Article Abstract:
Observation of the clutch size seasonal decline of the barnacle goose in Svalbard showed that females that came first to the breeding area displayed better characteristics in terms of clutch size, nesting, prelaying, incubation and brood size. However, these observations failed to support the nutrient allocation hypothesis. An alternative explanation is that later geese spend less of their reserves on eggs.
Publication Name: The Condor
Subject: Biological sciences
ISSN: 0010-5422
Year: 1996
User Contributions:
Comment about this article or add new information about this topic:
Effects of water conditions on clutch size, egg volume, and hatchling mass of Mallards and Gadwalls in the Prairie Pothole Region
Article Abstract:
Issues concerning relationships between water conditions and the volume of hatched eggs, the size of the clutch and the mass of the hatchlings in the Gadwalls and Mallards of the Region Prairies Pothole in Minnesota and Dakota are discussed.
Publication Name: The Condor
Subject: Biological sciences
ISSN: 0010-5422
Year: 2000
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: PCR amplification and species determination of microsporidia in formalin-fixed feces after immunomagnetic separation
- Abstracts: Control of neuronal diversity by the floor plate: contact-mediated induction of midbrain dopaminergic neurons
- Abstracts: Estimation of fungal infection of peanut kernels by determination of free glutamic acid content. Endo-xylogalacturonan hydrolase, a novel pectinolytic enzyme
- Abstracts: Dispersal from natal territories and the origin of cooperatively polyandrous breeding groups in the Brown Skua
- Abstracts: Timing of cranial pneumatization in White-throated Sparrows. Plumage brightness and breeding-season dominance in the House Finch: a negatively correlated handicap?