548 results — topic: Genetics & Evolution
Social Behavior and Population Dynamics of Marmots
This table contains 37 years of demographic data for 12 sites. The trap record for each animal for each year the animal was present includes age, sex, locality, and reproductive status. Also included, when known, are changes in location, fate (predation death, dispersed), and genetic information (al
Social Behavior and Population Dynamics of Marmots
This table contains 36 years of demographic data for 12 sites. The trap record for each animal for each year the animal was present includes age, sex, locality, and reproductive status. Also included, when known, are changes in location, fate (predation death, dispersed), and genetic information (al
Social Behavior and Population Dynamics of Marmots
This table contains 36 years of demographic data for 12 sites. The trap record for each animal for each year the animal was present includes age, sex, locality, and reproductive status. Also included, when known, are changes in location, fate (predation death, dispersed), and genetic information (al
Social Behavior and Population Dynamics of Marmots
This table contains 36 years of demographic data for 12 sites. The trap record for each animal for each year the animal was present includes age, sex, locality, and reproductive status. Also included, when known, are changes in location, fate (predation death, dispersed), and genetic information (al
Social Behavior and Population Dynamics of Marmots
This table contains 37 years of demographic data for 12 sites. The trap record for each animal for each year the animal was present includes age, sex, locality, and reproductive status. Also included, when known, are changes in location, fate (predation death, dispersed), and genetic information (al
Social Behavior and Population Dynamics of Marmots
This table contains 37 years of demographic data for 12 sites. The trap record for each animal for each year the animal was present includes age, sex, locality, and reproductive status. Also included, when known, are changes in location, fate (predation death, dispersed), and genetic information (al
Adaptations at specific loci. IV. Differential mating success among glycolytic allozyme genotypes of Colias butterflies
ABSTRACT Male mating success as a function of genotype is an important fitness component. It can be studied in wild populations, in species for which a given group of progeny has exactly one father, by determining genotypes of wild-caught mothers and of sufficient numbers of their progeny. Here, we
Bioenergetics and evolutionary genetics: opportunities for new synthesis
Bioenergetics, the study of energy flow through living systems, may be helpful in the study of evolutionary genetics, at least for those loci concerned with resource processing in metabolism. Energy flow through organisms is sensitive to resource supply and demand, to parameters of metabolic organiz
Allelic isozymes and the mechanistic study of evolution
Reciprocal transplant experiments with Delphinium nelsonii (Ranunculaceae): evidence for local adaptation
Reciprocal seed transplants suggest that there is fine‐scale adaptation in Colorado populations of the perennial herb Delphinium nelsonii. In four experimental plots, seeds planted within 1 m of the maternal parent produced seedlings that began flowering at a younger age and produced more flowers ov
Low levels of genetic variability in pikas from Colorado
Genetic variability at 27 loci was analyzed in four populations of pikas (Ochotona princeps) from Colorado. Estimates of mean heterozygosity [Formula: see text] ranged from 0.5 to 1.4%. These results are among the lowest estimates of [Formula: see text] reported for a mammal having a broad distribut
Genetic distances and taxonomy of checkerspot butterflies (Nymphalidae: Nymphalinae)
A survey of herbivorous insect species along a phylogenetic gradient
The ecology and evolution of symbioses between lycaenid butterflies and ants
Pollination Biology
Adaptation at specific loci. III. Field behavior and survivorship differences among Colias PGI genotypes are predictable from in vitro biochemistry
Pollinator behaviour and natural selection for flower colour in Delphinium nelsonii
Evidence is presented that discrimination occurs because white flowers have inferior ‘nectar guides’ and therefore require longer handling times than blue flowers, and pollinators may experience lower net rates of energy intake on white flowers, a sufficient reason for undervisitation by optimally-f
Adaptation at specific loci. II. Demographic and biochemical elements in the maintenance of the Colias PGI polymorphism
ABSTRACT Demographically oriented sampling in the wild and biochemical study of allozymes in the laboratory have been used to probe maintenance of the phosphoglucose isomerase polymorphism of Colias butterflies.—The several alleles at this locus show negative or no covariation among their frequencie