Population Dynamics
Ecosystem
Models, Biological
Seasons
Population Growth
Climate
Molecular Dynamics Simulation
Computer Simulation
Ecology
Models, Theoretical
Biological Evolution
Stochastic Processes
Environment
Nonlinear Dynamics
Geography
Disease Vectors
Animal Migration
Host-Parasite Interactions
Predatory Behavior
Life Cycle Stages
Acari
Arvicolinae
Fisheries
Genetics, Population
Conservation of Natural Resources
Food Chain
Veronica
Pest Control
Liliaceae
Phytoplankton
Fertility
Evolution, Molecular
Microbial Interactions
Models, Statistical
Foxes
Oviposition
Climate Change
Parasitic Diseases, Animal
Insect Vectors
Biodiversity
Biota
Culicidae
Species Specificity
Temperature
Selection, Genetic
Bacteria
Larva
Feeding Behavior
Demography
Symbiosis
Models, Genetic
Antelopes
Copepoda
Snails
Bayes Theorem
Ruminants
Butterflies
Sequence Analysis, DNA
Muscidae
Aphids
Weevils
Diptera
Competitive Behavior
Lead Radioisotopes
Biomass
Salmon
Charadriiformes
Trees
Bacteroidetes
Algorithms
Animal Distribution
Endangered Species
Aedes
Models, Molecular
Beetles
Insect Control
Molecular Sequence Data
Genetic Fitness
Ecological Systems, Closed
Methane
Seed Dispersal
Desert Climate
Colony Count, Microbial
Microsatellite Repeats
Bioreactors
Oceans and Seas
Mites
Deer
Granulovirus
Mytilus
RNA, Ribosomal, 16S
Indian Ocean
Phylogeography
Water Microbiology
Ecological and Environmental Phenomena
Raptors
Reproduction, Asexual
Perciformes
Bufonidae
Greenhouse Effect
Reduviidae
Galliformes
Hemiptera
Adaptation, Physiological
Game Theory
Wasps
Ciliophora
Cluster Analysis
Waste Disposal, Fluid
Carnivora
Introduced Species
Rickettsiaceae
Soil Microbiology
Monte Carlo Method
Genotype
Adaptation, Biological
Gene Flow
Anopheles gambiae
Animals, Wild
Color
Wolbachia
Polymerase Chain Reaction
Fishes
Mutation
Tropical Climate
Host Specificity
Asteraceae
Pest Control, Biological
DNA, Ribosomal
Territoriality
Protein Conformation
Seeds
Coral Reefs
Likelihood Functions
Daphnia
Biomphalaria
Soil
Passeriformes
Thermodynamics
Biodegradation, Environmental
Songbirds
Water
DNA Fingerprinting
Disease Reservoirs
Mitochondrial Dynamics
Eukaryota
Plants
Mosquito Control
Dengue
Rivers
DNA, Mitochondrial
Antibiosis
Models, Chemical
Poaceae
Body Weights and Measures
Insects
Host-Pathogen Interactions
Models, Neurological
Environmental Monitoring
Polyploidy
Prediction of genetic contributions and generation intervals in populations with overlapping generations under selection. (1/4953)
A method to predict long-term genetic contributions of ancestors to future generations is studied in detail for a population with overlapping generations under mass or sib index selection. An existing method provides insight into the mechanisms determining the flow of genes through selected populations, and takes account of selection by modeling the long-term genetic contribution as a linear regression on breeding value. Total genetic contributions of age classes are modeled using a modified gene flow approach and long-term predictions are obtained assuming equilibrium genetic parameters. Generation interval was defined as the time in which genetic contributions sum to unity, which is equal to the turnover time of genes. Accurate predictions of long-term genetic contributions of individual animals, as well as total contributions of age classes were obtained. Due to selection, offspring of young parents had an above-average breeding value. Long-term genetic contributions of youngest age classes were therefore higher than expected from the age class distribution of parents, and generation interval was shorter than the average age of parents at birth of their offspring. Due to an increased selective advantage of offspring of young parents, generation interval decreased with increasing heritability and selection intensity. The method was compared to conventional gene flow and showed more accurate predictions of long-term genetic contributions. (+info)Ancestral Asian source(s) of new world Y-chromosome founder haplotypes. (2/4953)
Haplotypes constructed from Y-chromosome markers were used to trace the origins of Native Americans. Our sample consisted of 2,198 males from 60 global populations, including 19 Native American and 15 indigenous North Asian groups. A set of 12 biallelic polymorphisms gave rise to 14 unique Y-chromosome haplotypes that were unevenly distributed among the populations. Combining multiallelic variation at two Y-linked microsatellites (DYS19 and DXYS156Y) with the unique haplotypes results in a total of 95 combination haplotypes. Contra previous findings based on Y- chromosome data, our new results suggest the possibility of more than one Native American paternal founder haplotype. We postulate that, of the nine unique haplotypes found in Native Americans, haplotypes 1C and 1F are the best candidates for major New World founder haplotypes, whereas haplotypes 1B, 1I, and 1U may either be founder haplotypes and/or have arrived in the New World via recent admixture. Two of the other four haplotypes (YAP+ haplotypes 4 and 5) are probably present because of post-Columbian admixture, whereas haplotype 1G may have originated in the New World, and the Old World source of the final New World haplotype (1D) remains unresolved. The contrasting distribution patterns of the two major candidate founder haplotypes in Asia and the New World, as well as the results of a nested cladistic analysis, suggest the possibility of more than one paternal migration from the general region of Lake Baikal to the Americas. (+info)Long-term studies of hantavirus reservoir populations in the southwestern United States: rationale, potential, and methods. (3/4953)
Hantaviruses are rodent-borne zoonotic agents that cause hemorrhagic fever with renal syndrome in Asia and Europe and hantavirus pulmonary syndrome (HPS) in North and South America. The epidemiology of human diseases caused by these viruses is tied to the ecology of the rodent hosts, and effective control and prevention relies on a through understanding of host ecology. After the 1993 HPS outbreak in the southwestern United States, the Centers for Disease Control and Prevention initiated long-term studies of the temporal dynamics of hantavirus infection in host populations. These studies, which used mark-recapture techniques on 24 trapping webs at nine sites in the southwestern United States, were designed to monitor changes in reservoir population densities and in the prevalence and incidence of infection; quantify environmental factors associated with these changes; and when linked to surveillance databases for HPS, lead to predictive models of human risk to be used in the design and implementation of control and prevention measures for human hantavirus disease. (+info)Long-term hantavirus persistence in rodent populations in central Arizona. (4/4953)
For 35 months, we monitored hantavirus activity in rodent populations in central Arizona. The most frequently captured hantavirus antibody-positive rodents were Peromyscus boylii and P. truei. Antibody-positive P. boylii were more frequently male (84%), older, and heavier, and they survived longer on trapping web sites than antibody-negative mice. The number of antibody-positive P. boylii was greater during high population densities than during low densities, while antibody prevalence was greater during low population densities. Virus transmission and incidence rates, also related to population densities, varied by trapping site. The spatial distribution of antibody-positive P. boylii varied by population density and reflected the species preference for dense chaparral habitats. The focal ranges of antibody-positive P. boylii also demonstrated a patchy distribution of hantavirus. (+info)A longitudinal study of Sin Nombre virus prevalence in rodents, southeastern Arizona. (5/4953)
We determined the prevalence of Sin Nombre virus antibodies in small mammals in southeastern Arizona. Of 1,234 rodents (from 13 species) captured each month from May through December 1995, only mice in the genus Peromyscus were seropositive. Antibody prevalence was 14.3% in 21 white-footed mice (P. leucopus), 13.3% in 98 brush mice (P. boylii), 0.8% in 118 cactus mice (P. eremicus), and 0% in 2 deer mice (P. maniculatus). Most antibody-positive mice were adult male Peromyscus captured close to one another early in the study. Population dynamics of brush mice suggest a correlation between population size and hantavirus-antibody prevalence. (+info)The changing elderly population and future health care needs. (6/4953)
The impending growth of the elderly population requires both fiscal and substantive changes in Medicare and Medicaid that are responsive to cost issues and to changing patterns of need. More emphasis is required on chronic disease management, on meaningful integration between acute and long-term care services, and on improved coordination between Medicare and Medicaid initiatives. This paper reviews various trends, including the growth in managed-care approaches, experience with social health maintenance organizations and Program of All-Inclusive Care for the Elderly demonstrations, and the need for a coherent long-term care policy. Such policies, however, transcend health care and require a broad range of community initiatives. (+info)Sex-biased dispersal in sperm whales: contrasting mitochondrial and nuclear genetic structure of global populations. (7/4953)
The social organization of most mammals is characterized by female philopatry and male dispersal. Such sex-biased dispersal can cause the genetic structure of populations to differ between the maternally inherited mitochondrial DNA (mtDNA) and the bi-parental nuclear genome. Here we report on the global genetic structure of oceanic populations of the sperm whale, one of the most widely distributed mammalian species. Groups of females and juveniles are mainly found at low latitudes, while males reach polar waters, returning to tropical and subtropical waters to breed. In comparisons between oceans, we did not find significant heterogeneity in allele frequencies of microsatellite loci (exact test; p = 0.23). Estimates of GST = 0.001 and RST = 0.005 also indicated negligible if any nuclear DNA differentiation. We have previously reported significant differentiation between oceans in mtDNA sequences. These contrasting patterns suggest that interoceanic movements have been more prevalent among males than among females, consistent with observations of females being the philopatric sex and having a more limited latitudinal distribution than males. Consequently, the typical mammalian dispersal pattern may have operated on a global scale in sperm whales. (+info)Patient health management: a promising paradigm in Canadian healthcare. (8/4953)
Disease management, or the focused application of resources to achieve desired health outcomes, began in Canada in 1971 with the introduction of a universal healthcare program and a single government payor. Although relatively unfocused and nonrestrictive by contemporary standards, this program was successful in terms of outcomes. However, it is expensive, and Canada's rapidly aging population is fueling a growing demand for more efficacious medical therapies. As a result, isolated services are being restricted in an effort to reduce costs. As a result of these changes and low prescription and patient compliance rates for efficacious therapies, total system costs have risen, there is a growing concern about deterioration of health outcomes, and stakeholders are dissatisfied. To optimize healthcare outcomes and reduce costs, a new paradigm--patient health management (PHM)--has emerged. With PHM, clinical and cost outcomes are continually measured and communicated to providers in an attempt to promote more efficacious care. PHM also seeks to avoid restrictive practices that are now associated with detrimental health outcomes and increased costs. PHM has proved successful when applied to acute and chronic cardiac disease treatment. It remains untested for most other diseases, but available data suggest that the comprehensive, evidence-based disease and systems management that characterizes PHM is likely to achieve the best health outcomes for the most people at the lowest possible costs. (+info)1. Heartworms: A parasite that infects the heart and lungs of dogs and cats, causing respiratory problems and potentially leading to heart failure.
2. Tapeworms: A type of parasite that can infect the digestive system of animals, causing weight loss, diarrhea, and other symptoms.
3. Mites: Small, eight-legged parasites that can cause skin irritation and allergic reactions in animals.
4. Lice: Small, wingless parasites that feed on the blood of animals, causing itching and scratching.
5. Hookworms: A type of parasite that can infect the digestive system of animals, causing weight loss, anemia, and other symptoms.
6. Roundworms: A common type of parasite that can infect animals, causing a range of symptoms including diarrhea, vomiting, and weight loss.
7. Ticks: Blood-sucking parasites that can transmit diseases to animals, such as Lyme disease and anaplasmosis.
8. Fleas: Small, wingless insects that feed on the blood of animals, causing itching and scratching.
9. Leishmaniasis: A parasitic disease caused by a protozoan parasite that can infect dogs and other animals, causing skin lesions and other symptoms.
10. Babesiosis: A parasitic disease caused by a protozoan parasite that can infect dogs and other animals, causing fever, anemia, and other symptoms.
Parasitic diseases in animals are often diagnosed through physical examination, laboratory tests, and imaging studies. Treatment options vary depending on the specific disease and the severity of the infection, but may include antiparasitic medications, antibiotics, and supportive care such as fluid therapy and nutritional support. Prevention is key in avoiding parasitic diseases in animals, and this can be achieved through regular deworming and vaccination programs, as well as taking measures to reduce exposure to parasites such as fleas and ticks.
Symptoms of dengue fever typically begin within 2-7 days after the bite of an infected mosquito and can include:
* High fever
* Severe headache
* Pain behind the eyes
* Severe joint and muscle pain
* Rash
* Fatigue
* Nausea
* Vomiting
In some cases, dengue fever can develop into a more severe form of the disease, known as dengue hemorrhagic fever (DHF), which can be life-threatening. Symptoms of DHF include:
* Severe abdominal pain
* Vomiting
* Diarrhea
* Bleeding from the nose, gums, or under the skin
* Easy bruising
* Petechiae (small red spots on the skin)
* Black stools
* Decreased urine output
Dengue fever is diagnosed based on a combination of symptoms, physical examination findings, and laboratory tests. Treatment for dengue fever is primarily focused on relieving symptoms and managing fluid and electrolyte imbalances. There is no specific treatment for the virus itself, but early detection and proper medical care can significantly lower the risk of complications and death.
Prevention of dengue fever relies on measures to prevent mosquito bites, such as using insect repellents, wearing protective clothing, and eliminating standing water around homes and communities to reduce the breeding of mosquitoes. Vaccines against dengue fever are also being developed, but none are currently available for widespread use.
In summary, dengue is a viral disease that is transmitted to humans through the bite of infected mosquitoes and can cause a range of symptoms from mild to severe. Early detection and proper medical care are essential to prevent complications and death from dengue fever. Prevention of dengue relies on measures to prevent mosquito bites and eliminating standing water around homes and communities.
References:
1. World Health Organization. (2020). Dengue and severe dengue. Retrieved from
2. Centers for Disease Control and Prevention. (2020). Dengue fever: Background. Retrieved from
3. Mayo Clinic. (2020). Dengue fever. Retrieved from
4. MedlinePlus. (2020). Dengue fever. Retrieved from
Polyploidy is a condition where an organism has more than two sets of chromosomes, which are the thread-like structures that carry genetic information. It can occur in both plants and animals, although it is relatively rare in most species. In humans, polyploidy is extremely rare and usually occurs as a result of errors during cell division or abnormal fertilization.
In medicine, polyploidy is often used to describe certain types of cancer, such as breast cancer or colon cancer, that have extra sets of chromosomes. This can lead to the development of more aggressive and difficult-to-treat tumors.
However, not all cases of polyploidy are cancerous. Some individuals with Down syndrome, for example, have an extra copy of chromosome 21, which is a non-cancerous form of polyploidy. Additionally, some people may be born with extra copies of certain genes or chromosomal regions due to errors during embryonic development, which can lead to various health problems but are not cancerous.
Overall, the term "polyploidy" in medicine is used to describe any condition where an organism has more than two sets of chromosomes, regardless of whether it is cancerous or non-cancerous.
There are several different types of malaria, including:
1. Plasmodium falciparum: This is the most severe form of malaria, and it can be fatal if left untreated. It is found in many parts of the world, including Africa, Asia, and Latin America.
2. Plasmodium vivax: This type of malaria is less severe than P. falciparum, but it can still cause serious complications if left untreated. It is found in many parts of the world, including Africa, Asia, and Latin America.
3. Plasmodium ovale: This type of malaria is similar to P. vivax, but it can cause more severe symptoms in some people. It is found primarily in West Africa.
4. Plasmodium malariae: This type of malaria is less common than the other three types, and it tends to cause milder symptoms. It is found primarily in parts of Africa and Asia.
The symptoms of malaria can vary depending on the type of parasite that is causing the infection, but they typically include:
1. Fever
2. Chills
3. Headache
4. Muscle and joint pain
5. Fatigue
6. Nausea and vomiting
7. Diarrhea
8. Anemia (low red blood cell count)
If malaria is not treated promptly, it can lead to more severe complications, such as:
1. Seizures
2. Coma
3. Respiratory failure
4. Kidney failure
5. Liver failure
6. Anemia (low red blood cell count)
Malaria is typically diagnosed through a combination of physical examination, medical history, and laboratory tests, such as blood smears or polymerase chain reaction (PCR) tests. Treatment for malaria typically involves the use of antimalarial drugs, such as chloroquine or artemisinin-based combination therapies. In severe cases, hospitalization may be necessary to manage complications and provide supportive care.
Prevention is an important aspect of managing malaria, and this can include:
1. Using insecticide-treated bed nets
2. Wearing protective clothing and applying insect repellent when outdoors
3. Eliminating standing water around homes and communities to reduce the number of mosquito breeding sites
4. Using indoor residual spraying (IRS) or insecticide-treated wall lining to kill mosquitoes
5. Implementing malaria control measures in areas where malaria is common, such as distribution of long-lasting insecticidal nets (LLINs) and indoor residual spraying (IRS)
6. Improving access to healthcare services, particularly in rural and remote areas
7. Providing education and awareness about malaria prevention and control
8. Encouraging the use of preventive medications, such as intermittent preventive treatment (IPT) for pregnant women and children under the age of five.
Early diagnosis and prompt treatment are critical in preventing the progression of malaria and reducing the risk of complications and death. In areas where malaria is common, it is essential to have access to reliable diagnostic tools and effective antimalarial drugs.
Some common types of fish diseases include:
1. Bacterial infections: These are caused by bacteria such as Aeromonas, Pseudomonas, and Mycobacterium. Symptoms can include fin and tail rot, body slime, and ulcers.
2. Viral infections: These are caused by viruses such as viral hemorrhagic septicemia (VHS) and infectious hematopoietic necrosis (IHN). Symptoms can include lethargy, loss of appetite, and rapid death.
3. Protozoan infections: These are caused by protozoa such as Cryptocaryon and Ichthyophonus. Symptoms can include flashing, rapid breathing, and white spots on the body.
4. Fungal infections: These are caused by fungi such as Saprolegnia and Achlya. Symptoms can include fuzzy growths on the body and fins, and sluggish behavior.
5. Parasitic infections: These are caused by parasites such as Ichthyophonus and Cryptocaryon. Symptoms can include flashing, rapid breathing, and white spots on the body.
Diagnosis of fish diseases is typically made through a combination of physical examination, laboratory tests, and observation of the fish's behavior and environment. Treatment options vary depending on the type of disease and the severity of symptoms, and can include antibiotics, antifungals, and medicated baths. Prevention is key in managing fish diseases, and this includes maintaining good water quality, providing a balanced diet, and keeping the fish in a healthy environment.
Note: The information provided is a general overview of common fish diseases and their symptoms, and should not be considered as professional medical advice. If you suspect your fish has a disease, it is recommended that you consult with a veterinarian or a qualified aquarium expert for proper diagnosis and treatment.
Population dynamics
Pest insect population dynamics
Population dynamics of fisheries
Ralph Thomlinson
Zeeland
Population ecology
Timeline of The Hague
Timeline of Leiden
Demography of the Netherlands
Timeline of Utrecht
Timeline of 's-Hertogenbosch
Groningen (province)
List of European countries by population
Evolutionary ecology
Timeline of Haarlem
Eco-evolutionary dynamics
Maldives
Population Studies Center at the University of Michigan
Glossary of fishery terms
Ittoqqortoormiit
Source-sink dynamics
Nagpur-Bhusawal section
Rajura
Janzen-Connell hypothesis
Fermi paradox
Botany
Soil biology
Institutional racism
Leptomeryx
Howrah-Nagpur-Mumbai line
Beaver dam
Assyria
Hutterites
Dragonriders of Pern (video game)
FORECAST (model)
Resource curse
Northern Ireland
Job interview
Psychology of religion
Economy of New Zealand
Dowry system in India
Juho Härkönen
Nigeria and the World Bank
Food web
Genome size
Baloch people in Sindh
Coexistence theory
Callophyllis variegata
Donald Rusk Currey
Hyderabad, Sindh
Single Convention on Narcotic Drugs
China-Tanzania relations
Kingdom of Kush
Foredune
Hamidou Tembine
Jere Behrman
Power: A New Social Analysis
Amphiura filiformis
Prostitution
Anterograde tracing
Inbreeding depression explains killer whale population dynamics | Nature Ecology & Evolution
Health aspects of population dynamics
Lyapunov type inequalities for Hammerstein integral equations and applications to population dynamics
SEA/RC22/R7 - Health Aspects of Population Dynamics
Policy Roundtable on Economic Development and Population Dynamics | Center For Global Development | Ideas to Action
Traces of Galaxy Formation: Stellar populations, Dynamics and Morphology | Instituto de Astrofísica de Canarias • IAC
PPT - DYNAMICS POPULATION PowerPoint Presentation, free download - ID:1891186
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DMS-EPSRC Eco-Evolutionary Dynamics of Fluctuating Populations
On Biology Past climate changes, population dynamics and the origin of Bison in Europe
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Women and population dynamics :
› WHO HQ Library catalog
APS -APS March Meeting 2016
- Event - Holes influence the mutation spectrum of human mitochondrial DNA.
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Resource pulses influence the spatio-temporal dynamics of a large carnivore population - Oxford Neuroscience
Demography1
- Demography: The statiscalstudy of populations, make predictions about how a populationwillchange. (slideserve.com)
Bacterial2
- In fact, pharmacodynamics largely focuses on the deterministic description of large well-mixed bacterial populations, but fails to account crucial stochastic effects arising in small communities. (ukri.org)
- Bacterial population dynamics in dairy waste during aerobic and anaerobic treatment and subsequent storage. (cdc.gov)
Antibiotic resistance2
- In particular, modelling population of varying size and composition subject to changing external factors is crucial to understand the evolution of microbial antibiotic resistance. (ukri.org)
- When antibiotics reduce a large population to a very small one but fail to eradicate it, surviving cells may replicate and restore infections, and these survivors are likely to develop antibiotic resistance. (ukri.org)
20221
- 2022). "Pest population dynamics are related to a continental overwintering gradient. (oregonstate.edu)
Extinction5
- Realistic levels of inbreeding depression strongly affect extinction risk in wild populations. (nature.com)
- As applications of these inequalities for nonlinear ODEs, we obtain extinction criteria and optimal locations of favorable habitats for populations inhabiting one dimensional heterogeneous environments governed by reaction-diffusion equations with spatially varying growth rates and external forcing. (aimsciences.org)
- Owing to the small population size, the details of the outcome are subject to large fluctuations.This important example clearly illustrates the need for theoretical advances to shed light on extinction and resistance scenarios in fluctuating environments. (ukri.org)
- During the last 50,000 years in Europe, Bison have experienced population expansion, contraction and extinction as a result of environmental and climatic changes. (biomedcentral.com)
- DNA analysis has allowed Eva-Maria Geigl and her team to retrace the population dynamics that took place regarding migration and extinction. (biomedcentral.com)
Species5
- Shaffer, M. L. Minimum population sizes for species conservation. (nature.com)
- However, fluctuations arising from randomly occurring birth / death events (demographic noise) and the change of environmental conditions (environmental variability), together with the spatial dispersal of species, play a crucial role in understanding how the size and composition of a population jointly evolve in time, i.e. its eco-evolutionary dynamics. (ukri.org)
- Rates of productivity (egg, nest, cygnet survival) and annual rates of apparent adult survival were lower and more variable than previously observed for other swan populations and species. (alaska.edu)
- Moreover, a complex population genetic structure was identified within LAm A clade supporting multiple monophylogenetic species, which could be driven by rapid host or environmental adaptation (~0.5 MYA). (nau.edu)
- Conclusions/Significance: At least six new phylogenetic species are proposed in the Histoplasma species complex supported by different phylogenetic and population genetics methods, comprising LAm A1, LAm A2, LAm B1, LAm B2, RJ and BAC-1 phylogenetic species. (nau.edu)
Migration3
- We analyze a birth, migration and death stochastic process modeling the dynamics of a finite population, in which individuals transit unidirectionally across successive compartments. (hal.science)
- the whole (or part of the) population affects the rates of individual birth, migration and death events. (hal.science)
- Peacebuilding, Migration & Development investigates the shifting needs of precarious populations both in a local context and for those who traverse global boundaries. (edu.au)
Assessments2
- Assessments of the dynamics of the HIV/AIDS epidemic in Africa are based largely on sentinel surveillance of antenatal clinic (ANC) attenders. (nih.gov)
- The Canada-Pakistan HIV/AIDS surveillance project has strengthened and expanded the existing national AIDS control programme surveillance system in Pakistan through a comprehensive estimate of the size and location of some of the most at-risk populations (sex workers and injection drug users) and annual assessments of their sociodemographic characteristics, behaviours and HIV prevalence. (who.int)
Environments2
- Population dynamics traditionally ignores fluctuations and considers static and homogeneous environments. (ukri.org)
- Many of the features of our theoretical models, such as switching environments, time-varying population sizes, public good production, etc. can be reproduced in laboratory experiments. (ukri.org)
Demographic2
- Fig. 1: Distribution, population structure, inbreeding and demographic history for five North Pacific killer whale populations. (nature.com)
- Here, we focus on the ubiquitous situation where the eco-evolutionary dynamics of fluctuating populations is shaped by the coupling of demographic noise and environmental variability. (ukri.org)
Mitochondrial2
- In this new BMC Biology study, Eva-Maria Geigl and her team have sequenced the mitochondrial DNA of 57 specimens to reveal that three populations of bison occupied western Europe in correlation with climate induced environmental changes. (biomedcentral.com)
- To accomplish this general purpose, mitochondrial DNA variations of 214 individuals from a population located in the Western region of the Iberian Northern plateau (the province of Zamora) were analyzed. (uab.cat)
Composition1
- The main aim of this work is to check if recent population movements together with existing boundaries (geographical and administrative) have influenced the current genetic composition of the area. (uab.cat)
Methyl2
- As a result, the general population is not likely to be exposed to large amounts of methyl parathion. (cdc.gov)
- Populations living within or very near areas of heavy methyl parathion use would have an increased risk of exposure to large amounts of methyl parathion through dermal contact with contaminated plants, by inhalation of the mist formed from the applied insecticide, or by ingestion of water or food-borne residues. (cdc.gov)
Crucial1
- Understanding the factors that cause endangered populations to either grow or decline is crucial for preserving biodiversity. (nature.com)
Estimates2
- 95% CIs assume a Poisson distribution);based on no. cases enrolled from each geography divided by the population estimates for each geography annualized to the duration of study period. (cdc.gov)
- Only largemouth bass nine inches or longer were tagged so population estimates include only that portion of the population. (seafwa.org)
Affects1
- The Southern Residents also had more inferred homozygous deleterious alleles than three other, growing, populations, further suggesting that inbreeding depression affects population fitness. (nature.com)
Models3
- inproceedings{LAM'10:Reconciling_Population_and_Agent, author = {Andrea Bracciali and Jane Hillston and Diego Latella and Mieke Massink}, title = {Reconciling Population and Agent Models for Crowd Dynamics}, booktitle = {LAM'10. (easychair.org)
- Our population models suggest that this inbreeding depression limits population growth and predict further decline if the population remains genetically isolated and typical environmental conditions continue. (nature.com)
- A number of detail-rich models have been developed to couple the dynamics of the immature and adult stages of Ae. (bvsalud.org)
Variations1
- The result is expressive, as we will show by discussing a few examples, and efficient, by the adoption of the fluid flow analysis techniques, which approximate system dynamics as continuous variations of population. (easychair.org)
Abundance1
- Fusing an agent-based model of mosquito population dynamics with a statistical reconstruction of spatio-temporal abundance patterns. (bvsalud.org)
Genetic2
- Genetic factors such as inbreeding depression can also affect population dynamics but these effects are rarely measured in the wild and thus often neglected in conservation efforts. (nature.com)
- Conservation actions focused only on extrinsic threats may therefore fail to account for key intrinsic genetic factors that also limit population growth. (nature.com)
Health2
- 1990) had reported that prevail because of low level of living standards, helminth parasites were aggregated in human poor environmental sanitation and ignorance of populations so that most individuals have very simple health promoting factors. (who.int)
- Flukes that cause schistosomiasis, paragonimiasis, fascioliasis, clonorchiasis, and opisthorchiasis are included in the World Health Organization (WHO) list of neglected tropical diseases (NTD) to which interventions for poor and marginalized populations are prioritized given the significant health burden. (medscape.com)
Development2
- CGD co-sponsored a Policy Roundtable on Economic Development and Population Dynamics. (cgdev.org)
- Because H. zea is a highly migratory pest, predicting when populations accumulate in one region can inform synchronous or lagged population development in other regions. (oregonstate.edu)
Diseases1
- Our program includes ongoing research on tick populations and tick-borne diseases, as well as a passive surveillance program, where people bring in ticks to us to identify. (cdc.gov)
Decline1
- In 1958, black bass numbers reached an all-time high, but late that year the population began a decline which continued throughout the study. (seafwa.org)
Environmental1
- Conservation efforts often address extrinsic threats, such as environmental degradation and overexploitation, that can limit the recovery of endangered populations. (nature.com)
Mortality1
- Also, the determination of age allows studying the growth or the biomass increase of the population and the study of mortality or diminution of the biomass. (scielo.org.mx)
Objectives1
- Age determination is one of the most important objectives in the study of fish population dynamics, and from this information it is possible to get to know the population structure by age groups, longevity, recruitment age, sexual maturity and captures. (scielo.org.mx)
Studies3
- Our group at the IAC consists of experienced researchers in cosmological simulations, dynamical studies, stellar populations and morphological properties of galaxies up to high redshift. (iac.es)
- In addition, the present study guides isolate selection for future population genomics and genome wide association studies in this important pathogen complex. (nau.edu)
- So we were fortunate to have data available for Monmouth, not only on tick populations in the field and tick infection rates from prior studies, but also on the numbers of ticks people were finding on themselves and bringing in to us. (cdc.gov)
Individuals2
- Immigration: Movement of individuals into a population. (slideserve.com)
- DynamicPopulation A population is a group of individuals who live together in the same habitat and are likely to interbreed. (slideserve.com)
Size1
- DynamicPopulation Limited space for territories may often put a cap on the size of bird populations. (slideserve.com)
Large2
- Long-term monitoring of the rate-of-change of mountain pine beetle (Dendroctonus ponderosae Hopkins) populations requires detailed tree-level information over large areas. (gc.ca)
- These findings suggest that extrapolations from surveillance data may indeed produce a distorted picture of the current dynamics of the HIV epidemic in the population at large. (nih.gov)
Effects3
- Fig. 2: Effects of inbreeding on survival to age 40 yr and population growth. (nature.com)
- Keller, L. F. & Waller, D. M. Inbreeding effects in wild populations. (nature.com)
- H. zea population dynamics are hierarchically structured with continental-level effects that are partitioned into three geographic zones. (oregonstate.edu)
Areas1
- Because of low rates of production and apparent survival, immigration by swans from other breeding areas may be important for sustaining a breeding population of tundra swans on and adjacent to Izembek NWR. (alaska.edu)
Distribution3
- Each population has a unique physical distribution in time and space. (slideserve.com)
- The limit model consists of an ordinary-differential equation ruling the dynamics of the first (slow) compartment, coupled with a quasi-stationary distribution in the remaining (fast) compartments, which averages the contribution of the fast component of the Markov chain on the slow one. (hal.science)
- Methodology/Principal Findings: Increased Histoplasma sampling (n = 234) resulted in the revision of the phylogenetic distribution and population structure using 1,563 aligned nucleotides from four protein-coding regions. (nau.edu)
Analysis2
- The approach encompasses the agent modelling viewpoint, as system behaviour emerges from the specified agent interaction, and the population modelling viewpoint, when continu- ous analysis is used. (easychair.org)
- Rooted in detailed stellar population analysis, we are constantly exploring and developing new tools and ideas to understand how galaxies came to be what we now observe. (iac.es)
Current1
- ANC-based data might draw a rather distorted picture of current dynamics of the HIV epidemic. (nih.gov)
Data1
- To establish population-based HIV survey data in selected populations, and to assess the validity of extrapolation from HIV sentinel surveillance amongst antenatal clinic attenders (ANC) to the general population. (nih.gov)
Birth1
- The higher pregnancy and birth rates among HIV-negative compared to HIV-positive women is another potential source of bias, as is the high rate of ANC clients aged 18-19 years (66%, compared with 34% in the general population of women). (nih.gov)
Rates2
- Teenagers analysed by single year of age revealed both ANC and women in the general population with about the same steep increase in prevalence by age, but the former at consistently higher rates. (nih.gov)
- Even though representing an obvious oversimplification, extrapolations of overall prevalence rates may correlate with that of the general population. (nih.gov)
Women1
- Women and population dynamics : perspectives from Asian countries / edited by K. Mahadevan. (who.int)
Area1
- In the urban area, the adjusted overall HIV prevalence rate of ANC (aged 15-39 years) was 24.4% [95% confidence interval (CI), 20.9-28.0] compared with 26.0% (95% CI, 23.4-28.6) in the general population. (nih.gov)
High1
- According to various measurements, 1958 began with a high predator population and a low forage population. (seafwa.org)
General1
- Surveillance of ANC tended to underestimate the overall HIV prevalence of the general population, but differences were not statistically significant. (nih.gov)
Show2
- Here we show that inbreeding depression strongly influences the population dynamics of an endangered killer whale population, despite genomic signatures of purging of deleterious alleles via natural selection. (nature.com)
- The populations of galeate acritarchs from the Cambrian-Ordovician transition section in borehole Nl-2 of the Algerian Sahara show a gradual increase in process length and in complexity of the process structures through the succession. (palass.org)
Regional1
- The authors acknowledge that regional within-season factors (precipitation, IPM strategies, agronomic practices, etc.) also influence population dynamics. (oregonstate.edu)
Terms1
- The validity of use of this key sentinel group in terms of HIV prevalence estimation was evaluated in a population-based survey of 4195 Zambian adults recruited through stratified random cluster sampling in urban Lusaka and rural Mposhi district in 1995-96. (nih.gov)
Year1
- The average length of bass captured by electro-fishing increased each succeeding year, indicating a population of larger bass fewer in number. (seafwa.org)