548 results — topic: Genetics & Evolution
Data from: Modeling intraspecific adaptation of Abies sachalinensis to local altitude and responses to global warming, based on a 36-year reciprocal transplant experiment
Intraspecific adaptation in Abies sachalinensis was examined using models based on long-term monitoring data gathered during a reciprocal transplant experiment with eight seed source populations and six transplantation sites along an altitudinal gradient. The consequence of local adaptation was eval
Data from: Networks, trees, and treeshrews: assessing support and identifying conflict with multiple loci and a problematic root
Multiple unlinked genetic loci often provide a more comprehensive picture of evolutionary history than any single gene can, but analyzing multigene data presents particular challenges. Differing rates and patterns of nucleotide substitution, combined with the limited information available in any dat
Data from: Systematics of the lizard family Pygopodidae with implications for the diversification of Australian temperate biotas
We conducted a phylogenetic study of pygopodid lizards, a group of 38 species endemic to Australia and New Guinea, with two major goals:to reconstruct a taxonomically complete and robustly supported phylogeny for the group and to use this information to gain insights into the tempo, mode, and timing
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
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
Physiology of Cold Adaptation in Birds
Testing the "mimicry" explanation for the <i>Colias</i> "alba" polymorphism: patterns of co-occurrence of <i>Colias</i> and Pierine butterflies
W. B. Watt, C. Kremen, P. Carter, Testing the `Mimicry' Explanation for the Colias `alba' Polymorphism: Patterns of Co-Occurrence of Colias and Pierine Butterflies, Functional Ecology, Vol. 3, No. 2 (1989), pp. 193-199
Optimal outcrossing in Ipomopsis aggregata: seed set and offspring fitness
Restricted gene flow and localized selection should establish a correlation between physical proximity and genetic similarity in many plant populations. Given this situation, fitness may decline in crosses between nearby plants (inbreeding depression), and in crosses between more widely separated pl
Dispersal of Erythronium grandiflorum pollen by bumblebees: implications for gene flow and reproductive success
Genetic differentiation of populations of Weidemeyer’s admiral butterfly.
I assessed the genetic differentiation of populations of Weidemeyer's admiral butterfly (Limenitis weidemeyerii) in central and eastern Colorado by using starch-gel electrophoresis. Wright's F-statistics indicated that there was significant differentiation, both within and between years, among the s
Evolutionary options for maximizing pollen dispersal of animal-pollinated plants
On the average, nectar-collecting bumble bees deposited 0.6% of the pollen removed from the flowers of Erythronium grandiflorum (Liliaceae) onto the stigmas of subsequently visited flowers. Because the proportion deposited declined as the amount removed increased, an individual plant would maximize
Variation in pollen flow within and among populations of Ipomopsis aggregata
Inflorescence size: test of the male function hypothesis
One explanation for low fruit sets in plants with hermaphroditic flowers is that total flower production by a plant is controlled primarily by selection through male function. This male function hypothesis presupposes that success in pollen donation increases more strongly with flower number than do
Evolution of Life Histories: Theory and Patterns from Mammals
Ecological Aspects of Social Evolution
Why do Ephemerella nymphs scorpion posture: a "ghost of predation past"?
The behavior of intact Ephemerella infrequens (Ephemeroptera, Ephemerellidae) and Ephemerella with cerci amputated was observed in response to encounters with live predaceous stoneflies (Megarcys signata, Plecoptera: Perlodidae), tethered-live and tethered-model predators, freshly excised stonefly a
Adaptation at specific loci. V. Metabolically adjacent enzyme loci may have very distinct experiences of selective pressures
Abstract The polymorphic phosphoglucomutase (PGM) and glucose-6-phosphate dehydrogenase (G6PD) loci have been studied in parallel to experimental work on the phosphoglucose isomerase (PGI) polymorphism in Colias butterflies. PGI, PGM and G6PD are also autosomal in Colias. PGM and G6PD are loosely li
Spatial segregation of the sexes of dioecious plants
Several recent studies have shown that males and females in some populations of dioecious plants are spatially segregated with respect to an environmental gradient. The inference is often made that such spatial segregation of the sexes (SSS) is favored by selection because it reduces competition bet