Filters: Tags: Brood parasitism (X)
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We studied patterns of paternity in 840 nestling bobolinks (Dolichonyx oryzivorus) from 191 pairbonded adults and the chicks they reared in west central New York, USA, during 19831986, using allozyme data (4 variable loci). Thirty-six (4.3%) nestlings exhibited genotypes that excluded a putative parent as a genetic parent. Using the method of Westneat et al. (1987) we estimated that 14.6% of the nestlings were sired by extrapair copulations and that 28% of the nests contained = 1 nestling resulting from extra-pair fertilizations (EPFs). Rates of EPFs did not appear to be related to population density among our bobolink populations. Younger males and older females were more likely to have young in their nests sired...
Categories: Publication;
Types: Citation,
Journal Citation;
Tags: Behavioral Ecology and Sociobiology,
alloparental care,
breeding,
brood parasitism,
genes,
Conclusions:Landscape features affect rates of brood parasitism. Rates of parasitism correlate with proximity to woody vegetation along patch edges. Influx of woody vegetation is associated with roadsides and grazing.Thresholds/Learnings:
Categories: Publication;
Types: Citation;
Tags: Land use configuration,
Landscape fragmentation,
Oklahoma,
birds,
brood parasitism,
Conclusions:The effects of landscape fragmentation depend on habitat structure, landscape context, the predator community, and the impact of parasitism. Because these factors differ substantially in western ecosystem compared to eastern forest ecosystems, it is difficult to make universal generalizations about the effects of landscape fragmentation on ecosystem processes and wildlife dynamicsThresholds/Learnings:
Categories: Publication;
Types: Citation;
Tags: Landscape fragmentation,
Montana,
Natural cover amount,
birds,
brood parasitism,
This metadata record represents passive immunity components of six songbird species (Passeriformes) in a single taxonomic family, the New World blackbirds (Icteridae). Six immune elements were compared among blackbird eggs collected in North Dakota, South Dakota, and Puerto Rico, including immunoglobulins (Ig) in both yolk and albumen, lipopolysaccharide-specific immunoglobulins in both yolk and albumen, and ovotransferrin and lysozyme in albumen. The data were summarized and used in the analysis for a peer-reviewed journal publication entitled: "Do life history traits influence patterns of maternal immune elements in New World blackbirds (Icteridae)?" The data consist of two data sets. The first data set includes...
Categories: Data;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Albumen,
Brood parasitism,
Cabo Roja Municipality, Puerto Rico,
Clutch size,
Colonial,
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