J Tufto,S Engen,K Hindar
J Tufto
A dispersal model for airborne pollen based on assumptions about wind directionality, gravity, and a wind threshold at which pollen is taken by the wind is developed, using a three dimensional diffusion approximation. The bivariate probabil...
Gene-Culture Coevolution and Sex Ratios: II. Sex-Chromosomal Distorters and Cultural Preferences for Offspring Sex [0.03%]
基因与文化共演化及性别比例：含性染色体的畸变基因和对子女性别的文化偏好
J Kumm,MW Feldman
J Kumm
Cultural preferences for the sex of offspring may produce behavior, such as female infanticide, sex-selective abortion and sex-selective parental investment, which alter the sex ratio in a population. Empirical evidence suggests that some g...
SM Krone,C Neuhauser
SM Krone
In this paper, we show how to construct the genealogy of a sample of genes for a large class of models with selection and mutation. Each gene corresponds to a single locus at which there is no recombination. The genealogy of the sample is e...
Searching for Food or Hosts: The Influence of Parasitoids Behavior on Host-Parasitoid Dynamics [0.03%]
寻找食物还是宿主？寄生天敌行为对宿主体内寄生动态的影响
V Krivan V,E Sirot
V Krivan V
A host-parasitoid system with overlapping generations is considered. The dynamics of the system is described by differential equations with a control parameter describing the behavior of the parasitoids. The control parameter models how the...
The Optimum Recombination Rate That Realizes the Fastest Evolution of a Novel Functional Combination of Many Genes [0.03%]
实现许多基因 novel 功能组合进化最快的最优重组率
H Suzuki
H Suzuki
The effect of genetic recombination (or crossover) by sexual reproduction on the time until a novel set of genes performing a combined function appears, spreads, and becomes fixed is studied. First, we study a haploid finite population with...
Population Dynamics of Evolutionary Change: Demographic Parameters as Indicators of Fitness [0.03%]
进化改变的种群动力学：作为适应度指标的人口参数
BG Murray
BG Murray
I evaluated demographic parameters as indicators of fitness by calculating the net reproductive rate (R0), exponential rate of change (r), lifetime reproductive success (LRS), and Malthusian parameter (m) for nine genotypes and four phenoty...
Herbivores, the Functional Diversity of Plants Species, and the Cycling of Nutrients in Ecosystems [0.03%]
植食者、植物种类的功能多样性以及生态系统的营养循环
J Pastor,Y Cohen
J Pastor
Numerous investigators have suggested that herbivores almost always increase rates of nutrient and energy flow through terrestrial ecosystems by returning to the soil fecal material and urine with faster turnover rate than shed plant litter...
OE Gaggiotti
OE Gaggiotti
The present study investigates the effect that different patterns of migration have on the genetic structure of source-sink metapopulations specifically modelling the dynamics of local populations. The model assumes a metapopulation consist...
CJ Briggs,HCJ Godfray
CJ Briggs
Models of insect-pathogen interactions in highly seasonal environments are developed. The models apply to insects such as many temperate forest pests that have a single generation per year and which are susceptible to viral disease only dur...
Y Iwasa,T Kubo,van Dam N et al.
Y Iwasa et al.
A recent study on a biennial plant demonstrated that pyrrolizidine alkaloids decrease with the age of leaves due to reallocation from old leaves to new leaves. Here we study the optimal age-specific pattern of defense chemical concentration...