3 edition of The causes and consequences of intrapopulational mating system variation in Lupinus nanus (Leguminosae) found in the catalog.
The causes and consequences of intrapopulational mating system variation in Lupinus nanus (Leguminosae)
Written in English
|Statement||by Keith Karoly.|
|LC Classifications||Microfilm 92/600 (Q)|
|The Physical Object|
|Pagination||ix, 205 leaves|
|Number of Pages||205|
|LC Control Number||92955341|
1 Original Article 2 Mating system change reduces the strength of sexual selection in an 3 American frontier population of the 19th century 4 Jacob A. Moorad a,b,⁎, Daniel E.L. Promislowa, Ken R. Smithc, Michael J. Waded 5 Q1 aDepartment of Genetics, University of Georgia, Athens, GA, USA 6 bDepartment of Pathology, University of Michigan Medical School, Ann Arbor, MI, . 3. In a natural population of outbreeding plants, the variance of the total number of seeds per plant is From the natural population, 20 plants are taken into the laboratory and developed into separate true-breeding lines by self-fertilization — with selection for high, low, or medium number of seeds — for 10 generations. The average variance in the tenth generation in each .
Genes are not the only players involved in determining population variation. Phenotypes are also influenced by other factors, such as the environment. A beachgoer is likely to have darker skin than a city dweller, for example, due to regular exposure to the sun, an Assortative mating in the American Robin. The Influence of Veterinary Control Fences on Certain Wild Large Mammal Species in the Caprivi, Namibia1 Rowan B. Martin, Independent Consultant, Harare, Zimbabwe Introduction This paper considers the effects of veterinary control fences on four wild mammal species and is based on consultancies conducted for the Ministry of Environment and Tourism.
RESEARCH ARTICLE Mating patterns and post-mating isolation in three cryptic species of the Engystomops petersi species complex Paula A. Trillo1,2,3*, Andrea E. Narvaez4,5, Santiago R. Ron4, Kim L. Hoke6 1 Museo de Historia Natural, Universidad Nacional Mayor de San Marcos, Lima, Peru´, 2 Smithsonian Tropical Research Institute, Balboa, Ancon, Panama, 3 Cited by: 2. Table 2: Rate of Habitat Loss and Animal Population Males Females Total Population Estimated Maximum Trial 1 0 Trial 2 Analysis and Conclusion Males Females Total Population Estimated Maximum Trial 1 Trial 2 Trial 3 Table 3: Food Production Variation.
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Just as mating patterns can promote speciation or hybridization, the presence of hybridization can shape mating patterns within a population. In this study, we characterized patterns of multiple mating and reproductive skew in a naturally hybridizing swordtail fish species, Xiphophorus quantified multiple mating using microsatellite markers to genotype embryos.
The causes and consequences of intrapopulational mating system variation in Lupinus nanus (Leguminosae). Ph.D. dissertation, The University of Chicago. Chicago, IL. Causes and consequences of spatial variation in sex ratios in a declining bird species.
Catriona A. Morrison. but the causes of these skews and their consequences for local population demography are rarely known. Within‐species variation in sex ratios can help to identify the demographic and behavioural processes associated with such by: If inbreeding more likely that individuals mating have the same deleterious alleles thus offspring more likely to show/express the recessive disease allele.
Extinction vortex Decreased population size-> increases inbreeding and increased effectiveness of genetic drift-> increased exposure of deleterious alleles -> decreased fitness -> decreased. Variation in female mate choice and mating success is affected by sex ratio experienced during early life.
Author links open overlay panel nonresource-based mating system in which males defend a harem of females. Females appear to make free choices a review of the causes and consequences. Biological Reviews, 72 (), pp. Cited by: 8. Knowledge of how mating success is related to body size may provide insight into the evolution of social systems.
This study investigated the mating system and relevant social behavior of a temperate anuran (Rana chensinensis) at three localities in northern China.
During chorusing, males aggregated and persisted in the communal spawning ponds with a density of Cited by: Mutations provide the source for genetic variation, but other evolutionary factors are more important in determining allele frequencies in a population. In a population of fish, body coloration varies from a light shade, almost white, to a dark shade of green.
if changes in the environment resulted in decreased predation of individuals with the. Ecological consequences of trait variation.
Trait variation among conspecific individuals has long been recognized, forming the basis of classic work in ecological genetics  and niche evolution .However, ecologists’ interest in such variation waned after the mids , and intraspecific trait variation has since been largely ignored by both empirical and theoretical by: Understanding the causes and consequences of sex ratio biases can therefore be an important step in understanding the processes influencing population dynamics, but studies exploring within‐species variation in sex ratios and their consequences are by: Mating system of wild Phaseolus lunatus L.
and its relationship to population size Article (PDF Available) in Heredity 94(2) March with 55 Reads How we measure 'reads'. The causes of variation in adult sex ratio remain, however, poorly understood.
Using time series from toI investigated sex-specific adult population growth rates and mortality indices (based on carcass counts) of Svalbard reindeer (Rangifer.
Mating System and Genetic Variability in the Simultaneously Hermaphroditic Terrestrial Gastropod Balea Perversa on the Baltic Island of Öland, Sweden. Anthropogenic influences often act directly on the predictors of mating system variation.
Habitat fragmentation alters the spatial distributions of resources, and the most often recorded ecological responses to climate change are shifts in the phenologies (i.e. temporal distributions of key life history events) of wild populations (Parmesan Cited by: Abstract Gender polymorphism, plant–animal interactions, and environmental heterogeneity are the three important sources of variation in mating system and.
However, the genetic mating system may differ from the social mating system (Birkhead and Møller ). Investigations of the genetic mating system of Kentish plovers have been published for only one population (Tuzla), in which extra-pair fertilisations were uncommon (3 % of chicks in total, n = 7/ chicks; Küpper et al.
).Cited by: mating, h=1, and males and females are equally important in terms of births. Values of h greater than one correspond to polygynous mating, where the birth rate is more dependent on females [16,26].
The population is also assumed to experience density-dependence of the Moran-Ricker type [31,32], as Table 1. Definition of symbols. It is not all positive that has come out of animal breeding practices.
There are examples where selective breeding has been taken too far. There are also examples where selective breeding has not only improved certain performances, but simultaneously and unintendedly also deteriorated other performances that were not under selection: the so-called negative correlated responses.
Procellariform seabirds provide a good model for studies of the causes and consequences of variability in avian egg size, because females can only adjust reproductive investment by breeding intermittently, or by altering the size of their single egg.
Maternal characteristics such as age, breeding experience and body size, as well as environmental. 13 Non-random mating, Inbreeding and Population Structure. Jewelweed, Impatiens capensis, is a common woodland flower in the Eastern US. You may have seen the swollen seed pods that explosively pop when you touch time, which is the source of an alternative name for this plant, “touch-me-not”.
Another interesting. tial distribution or the mating system, and it is the target of some control measures. For instance, the release of pheromones is a pest control strategy that aﬀects directly the value of p, increasing the males’ diﬃculties to locate females in space through trail confusion (Boukal and Berec ).
For simplicity, assume that every male has. Genetic Consequences of Assortative Mating Mate selection can have many important evolutionary implications for a population. A randomly mating population implies that any individual with any given genotype has the equal chance of mating with another individual of any given genotype.
This is not the case in non-randomly mating populations.the three important sources of variation in mating system and pollen dispersal patterns. We used progeny arrays and paternity analysis to assess the effects of gender type and density level on variation in mating patterns within a highly isolated population of Prunus mahaleb, a gynodioecious species.Breeding & Genetics - International Lupins Conference Papers - Fremantle Western Australia.