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Molecular basis of G6PD deficiency
Molecular basis of G6PD deficiency

... stress require glutathione and the products of the G6PD oxidative shunt for optimal growth. Not unlike the sickle cell trait which utilises an independent mechanism of protection against malaria, G6PD deficiency creates an inhospitable environment for the malarial parasites and discourage lodging o ...
PLoS Pathogens
PLoS Pathogens

... Many bacterial pathogens employ a type III secretion system to deliver type III secreted effectors (T3SEs) into host cells, where they interact directly with host substrates to modulate defense pathways and promote disease. This interaction creates intense selective pressures on these secreted effec ...
Hedgerow management and wildlife review
Hedgerow management and wildlife review

... For example, whilst psyllids are more abundant on untrimmed hedges, springtails and thrips respond positively to regular cutting. Increased trimming frequencies probably stimulate shoot and leaf production and increase leaf area per square metre of hedge face – benefiting herbivorous invertebrate sp ...
Plant Diversity of Forests
Plant Diversity of Forests

... elevation, slope, aspect, soil texture, climate etc., specify the conditions of physical environment and thus the primary species distribution. The relations were already regarded and studied in 19th century (Hansen & Rotella, 1999). The parameters affecting the plant growth and nutrient availabilit ...
Evolutionary Conservation Biology
Evolutionary Conservation Biology

... École Normale Supérieure, Paris, France, and Associate Professor of Evolutionary Ecology in the Department of Ecology and Evolutionary Biology at the University of Arizona, Tucson, USA. ULF DIECKMANN is Project Leader of the Adaptive Dynamics Network at the International Institute for Applied System ...
Differential mRNA expression levels and gene sequences of a
Differential mRNA expression levels and gene sequences of a

... clone from the resistant strain. This nucleotide change results in an amino acid difference in the predicted protein sequence from tryptophan (Trp220) in the susceptible strain to a glycine (Gly220) in the resistant strain. The point mutation at position 658 was confirmed in the genomic DNA sequence ...
Mugger Crocodile Crocodylus palustris
Mugger Crocodile Crocodylus palustris

... but this has not been observed in the wild. Incubation is relatively short, typically lasting 55-75 days (Whitaker 1987). Whitaker and Whitaker (1989) provide a good review of the behaviour and ecology of this species. Like a number of other crocodilians, C. palustris is known to dig burrows. Whitak ...
Seed limitation and the coexistence of pioneer tree species
Seed limitation and the coexistence of pioneer tree species

... Comparison of the models showed that the abundance of seed rain did affect the probability of seedling recruitment, at least for some pioneers. Overall, models incorporating seed rain improved predictions of seedling recruitment over the null model for 8 of 14 pioneer species. Variation in how well ...
Deterministic and stochastic forces in community ecology:
Deterministic and stochastic forces in community ecology:

... Current theory in community ecology attempts to understand interactions between deterministic niche-based processes and stochastic processes driven by dispersal and functional equivalence. We examined the consequences of variation in metacommunity functional diversity and dispersal limitation on lo ...
D-loop - BioMed Central
D-loop - BioMed Central

... mammals and birds [23, 24]. This structure is absent in D. pteronyssinus, indicating that it may represent a random sequence of no functional significance. There is an AT-repeat downstream of this structure in D. farinae and downstream of the 3’ end of tRNA-Phe in D. pteronyssinus. In the former spe ...
Roles of parasites in animal invasions
Roles of parasites in animal invasions

... transmission to new hosts is not dependent on host density. A recent study found that the vertically transmitted microsporidian Fibrillanosema crangonictidae had been introduced to Europe along with its North American amphipod host Crangonyx pseudogracilis [32]. This is significant, because host SEX ...
Small-mammal herbivore control of secondary succession in New
Small-mammal herbivore control of secondary succession in New

... some biological interactions during secondary succession, such as competition and consumer pressure, while favoring other biotic interactions such as facilitative interactions driven by neighbor amelioration of physical stress (Connell and Slatyer 1977, Odum 1985, Bertness and Shumway 1993, Anderson ...
Habitat Features Determine the Basking Distribution of
Habitat Features Determine the Basking Distribution of

... basking sites that experienced reduced exposure to people. If this is the case, then it follows that native E. marmorata may be excluded from prime basking sites through a combination of human activity patterns and competition with introduced T. s. elegans. To test this hypothesis, we measured sever ...
Chapter 1
Chapter 1

... In Africa, raptors population declines have been documented since the 1970s, throughout the continent (e.g. Brandl et al. 1985, Sorley & Anderson 1994, Herremans & HerremansTonnoeyr 2000, Thiollay 2000, 2001, 2006a, 2007a, Anadón et al. 2010, Ogada & Keesing 2010, Ogada & Buij 2011, Virani et al. 20 ...
Environmental heterogeneity, species diversity and
Environmental heterogeneity, species diversity and

... The positive relationship between spatial environmental heterogeneity and species diversity is a widely accepted concept, generally associated with niche limitation. However, niche limitation cannot account for negative heterogeneity–diversity relationships (HDR) revealed in several case studies. He ...
Great Basin naturalist memoirs
Great Basin naturalist memoirs

... to occur in African deserts where bipedal jerboas are associated with open areas more than are quadrupedal gerbils (e.g., Happold ...
EXPERIMENTAL TESTS OF EFFECTS OF PLANT PRODUCTIVITY AND E S
EXPERIMENTAL TESTS OF EFFECTS OF PLANT PRODUCTIVITY AND E S

... Abstract. Because the quantity, quality, and heterogeneity of resources should affect the diversity of consumers, plant productivity, plant composition, and plant diversity may influence the diversity of trophic levels higher up the food chain (‘‘bottom-up’’ control of diversity). Increasing plant p ...
On the optimality of the genetic code, with the
On the optimality of the genetic code, with the

... The existence of nonrandom patterns in codon assignments is supported by many statistical and biochemical studies. The canonical genetic code is known to be highly efficient in minimizing the effects of mistranslation errors and point mutations. For example, it is known that when an error induces th ...
Self-limitation as an explanation for species` relative abundances
Self-limitation as an explanation for species` relative abundances

Threats to Biodiversity - Wildlife Ecology and Conservation
Threats to Biodiversity - Wildlife Ecology and Conservation

... as free-ranging populations are exposed to thousands of different chemicals, and a number of other natural factors can affect their health. Captive-feeding studies have demonstrated that herring from the contaminated Baltic Sea affect the immune and endocrine systems of harbor seals (Ross et al. 199 ...
Is There Current Competition between Sympatric Siberian Weasels
Is There Current Competition between Sympatric Siberian Weasels

... coxingi, or spiny rat (Yu 1994). Moreover, abundances of high-mountain rodent species (e.g., Lin and Shiraishi 1992, Yu 1993, Adler 1996) are higher than ...
First half of year review: Relationships of Terms
First half of year review: Relationships of Terms

... Differentiate among instincts, non-associative learned and associative learned behaviors. (46) Differentiate between insight learning, classical, and operant conditioning. (46) Define imprinting and sensitive phase to explain how behaviors develop. (46) Explain how information is communicated among ...
midwest furbearer group
midwest furbearer group

... Abstract: In this talk we review a series of empirical studies on American marten in and around the Great Divide Ranger District of the Chequamegon-Nicolet National Forest in Wisconsin. These field studies were developed to parameterize a simulation model of marten dispersal. Our ongoing objective ...
Module 6 Ecological Principles - Members
Module 6 Ecological Principles - Members

... environmental gradients. The climatic regime has a strong influence on Arctic species and systems and the microclimate that is so important in ecology is strongly influenced by both small and large changes in the shape or topography of the land or sea. At a large scale, ecological changes are often ...
Competitive Response Hierarchies for Germination
Competitive Response Hierarchies for Germination

... Abstract. Among plants, differences in competition intensity and in the ranking of competitive ability for traits such as germination, growth, and survival may suggest that the importance of competition for population success varies with the trait measured. If a species is a good competitor when mea ...
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Molecular ecology

Molecular ecology is a field of evolutionary biology that is concerned with applying molecular population genetics, molecular phylogenetics, and more recently genomics to traditional ecological questions (e.g., species diagnosis, conservation and assessment of biodiversity, species-area relationships, and many questions in behavioral ecology). It is virtually synonymous with the field of ""Ecological Genetics"" as pioneered by Theodosius Dobzhansky, E. B. Ford, Godfrey M. Hewitt and others. These fields are united in their attempt to study genetic-based questions ""out in the field"" as opposed to the laboratory. Molecular ecology is related to the field of Conservation genetics.Methods frequently include using microsatellites to determine gene flow and hybridization between populations. The development of molecular ecology is also closely related to the use of DNA microarrays, which allows for the simultaneous analysis of the expression of thousands of different genes. Quantitative PCR may also be used to analyze gene expression as a result of changes in environmental conditions or different response by differently adapted individuals.
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