Body-Size Variation and Fitness Components in Lesser Snow Geese (Chen caerulescens caerulescens)
نویسندگان
چکیده
منابع مشابه
Habitat shifts and parasite loads of lesser snow geese (Chen caerulescens caerulescens)1
Responding to degradation in their original coastal habitat, increasing numbers of lesser snow geese are rearing their broods farther inland. Goslings collected in this inland, fresh water habitat have substantially lower loads of two species of caecal nematodes than do goslings collected in coastal, salt marsh habitat. This likely reflects differences between the habitats in the levels of infe...
متن کاملEgg size as a predictor of nutrient composition of eggs and neonates of Canada Geese (Branta canadensis interior) and Lesser Snow Geese (Chen caerulescens caerulescens)
Fresh and pipped eggs were collected to provide data on nutrient composition of eggs and neonates, respectively, of Canada Geese (Branta canadensis interior) and Lesser Snow Geese (Chen caerulescens caerulescens). We sought to determine how well a commonly used and simple index like estimated egg volume or “egg size” predicted egg composition and neonate characteristics including body compositi...
متن کاملBody Size and Fecundity in Lesser Snow Geese
Davies et al. (1988) concluded that body size did not directly influence annual fecundity in Lesser Snow Geese (Chen c. caerulescens, hereafter called Snow Geese). This disagrees with Ankney and Macinnes (1978) who showed that there was a positive correlation between culmen length and body mass in prelaying female Snow Geese, and that heavier females laid more eggs than did lighter females. A r...
متن کاملIdentification of restriction-fragment-length polymorphisms in genomic DNA of the lesser snow goose (Anser caerulescens caerulescens).
A genomic library of partially EcoRI-digested DNA from the lesser snow goose, Anser caerulescens caerulescens, was constructed in the phage vector Charon 4. Phage containing only unique sequences were identified by screening plaques with 32P-labeled genomic DNA. Restriction-fragment-length polymorphisms (RFLPs) were identified by probing DNA from 11-13 male birds from the breeding colony at La ...
متن کاملIs There a Positive Relationship Between Body Size and Fecundity in Lesser Snow Geese?
Lack (1967) proposed that egg production in nidifugous waterfowl is ultimately limited by availability of nutrient resources (fat, protein, minerals) during the egg-laying period. In some species, there is considerable variation in the extent that egg production depends upon stored nutrient reserves and reserves acquired during laying (Krapu 1981, Alisauskas and Ankney 1985, Drobney and Fredric...
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ژورنال
عنوان ژورنال: The Auk
سال: 1988
ISSN: 0004-8038,1938-4254
DOI: 10.1093/auk/105.4.639