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USA-GA-MEIGS Azienda Directories
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Azienda News:
- (PDF) Between and within clutch variation of egg size in . . .
However, egg size variation can be related to clutch size, seasonality and female body mass, and age at the time of laying [42, 43] Tasmanian emu is more similar to Cassowary (Casuarius casuarius
- GEOGRAPHIC AND ECOLOGICAL VARIATION IN CLUTCH SIZE . . . - BioOne
In many birds, populations breeding at higher latitudes have larger clutch sizes It has been hypothesized that this relationship results from the greater availability of food at higher latitudes We examined geographic variation in clutch size of Tree Swallows (Tachycineta bicolor) in relation to latitude, longitude, laying date, breeding density, elevation, and summer actual
- Bird Clutch Size - SpringerLink
The ornithologist David Lack was the first researcher to study the evolution of bird clutch size, in the 1940s (Lack 1947, 1948) Lack’s work was seminal, as it attempted to explain variation in clutch size in terms of individual selection, while many researchers at the time considered that clutch size evolved to allow a population or species to persist
- A General Theory of Clutch Size - JSTOR
the lower, will determine clutch size This being a limitation which does not vary with environment, we expect clutch size to be invariably high (large X intercept) Ground-nesters which do feed young have much smaller clutches (Caprimulgus, Sterna, Alauda) A third theory is that clutch size is adjusted "to balance mortality," but it
- Seasonal and annual variations in egg mass and clutch size . . .
We analyzed seasonal shifts in egg mass and clutch size for Loggerhead Sea Turtles (Caretta caretta (Linnaeus, 1758)) nesting at a temperate rookery (Yakushima Island, Japan) over a 2-year period
- Protective geometry and reproductive anatomy as candidate . . .
The most common clutch sizes across many species correspond with multiples of ovariole number Clutch size analysis We tested whether clutch sizes obse Clutch size variation within and
- Environmental seasonality and latitude drive clutch size . . .
Global patterns in clutch size variations across species have been linked to resource availability and seasonal climate change However, our understanding of the specific local-scale drivers of clutch size diversity has remained unclear, especially among populations of ectotherms with relatively homogeneous genetic structures experiencing varying local environmental conditions
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