548 results — topic: Genetics & Evolution
Thermoregulatory strategies in Colias butterflies: thermal stress and the limits to adaptation in temporally varying environments
As a case study of adaptive strategies in temporally varying environments, thermoregulation in three populations of Colias butterflies along an elevation gradient in Colorado is studied in relation to the fluctuating meteorological environment. Emphasis is placed on short time scale (15-300 s) varia
Genetic variation within and between populations of an alpine grasshopper, <i>Aeropedellus clavatus</i>
Deer mouse hemoglobins: is there genetic adaptation to high altitude?
Population structure of pierid butterflies. IV. Genetic and physiological investment in offspring by male Colias
Female use of nutrients donated by males at mating, and complete sperm precedence, in Colias eurytheme Boisduval are documented.
Geographic variation in vocalizations and evolution of North American pine grosbeaks
North American Pine Grosbeaks (Pinicola enucleator) vary geographically in two of their call notes. Variation is greatest in the location calls that communicate between individuals at great distances. Birds of the taiga and coastal Alaska give whistled calls, of which four categories have been ident
Evolutionary conservation of linkage groups: additional evidence from murid and cricetid rodents
Linkage has now been established between Gpi-1 and the Hbe globin locus in Peromyscus, suggesting that perhaps a chromosomal inversion has occurred during the evolutionary divergence of the two rodent families.
Closely linked alpha-chain hemoglobin loci in Peromyscus and other mammals: speculations on the evolution of duplicate loci
Genetic variation in social mammals: the marmot model
The social substructure and the distribution of genetic variation among colonies of yellow-bellied marmots, when analyzed as an evolutionary system, suggests that this substructure enhances the intercolony variance and retards the fixation of genetic variation. This result supports a traditional the
Evolution of the alphaesterase duplication within the montana subphylad of the virilis species group of Drosophila
ABSTRACT Previous studies on linkage disequilibrium involving four tightly linked genes that code for the alpha-esterases of Drosophila montana suggest that these loci arose from a primitive esterase gene by gene duplication, Iollowed by tandem duplication (ROBERTS and BAKER 1973). We have examined
The distribution of genetic variation in a social mammal, the yellow-bellied marmot
A review of the distribution, ecology and evolution of the North American species of Acroneuria and six related genera (Plecoptera: Perlidae)
Competition for pollination and the evolution of flowering time
Adaptation at specific loci. I. Natural selection on phosphoglucose isomerase of Colias butterflies: biochemical and population aspects
ABSTRACT Electrophoretic variants of phosphoglucose isomerase (PGI) in Colias butterflies have been studied from field and laboratory viewpoints. The transmission pattern is that of a dimeric enzyme controlled by one structural gene locus. Populations usually harbor four to six allelic mobility clas
TNC Fact Sheet: Managing for Change in the Gunnison Basin: Building Resilience
Our actions today to build ecosystem resilience to climate change will help us protect the Gunnison Basin’s natural resources—clean air and wildlife habitat, and the livelihoods they provide in the future for people. The Gunnison Climate Working Group, a group of public and private partners formed i
Summary Report: Gunnison Climate Adaptation Pilot Project
The Gunnison Climate Working Group is piloting a on-the-ground climate adaptation project to buildresilience of riparian areas/wet meadows – priority brood-rearing habitat – to help the Gunnison Sagegrouseand other wildlife species adapt to climate change in the Gunnison Basin. Riparian areas havebe