Zaloguj się

Gotowe bibliografie tematyczne / Hybrid fitness / Artykuły w czasopismach

Kliknij ten link, aby zobaczyć inne rodzaje publikacji na ten temat: Hybrid fitness.

Artykuły w czasopismach na temat „Hybrid fitness”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 26 kwietnia 2022

Utwórz poprawne odniesienie w stylach APA, MLA, Chicago, Harvard i wielu innych

Wybierz rodzaj źródła:

Sprawdź 50 najlepszych artykułów w czasopismach naukowych na temat „Hybrid fitness”.

Przycisk „Dodaj do bibliografii” jest dostępny obok każdej pracy w bibliografii. Użyj go – a my automatycznie utworzymy odniesienie bibliograficzne do wybranej pracy w stylu cytowania, którego potrzebujesz: APA, MLA, Harvard, Chicago, Vancouver itp.

Możesz również pobrać pełny tekst publikacji naukowej w formacie „.pdf” i przeczytać adnotację do pracy online, jeśli odpowiednie parametry są dostępne w metadanych.

Przeglądaj artykuły w czasopismach z różnych dziedzin i twórz odpowiednie bibliografie.

1

Moore, William S., and Walter D. Koenig. "Comparative Reproductive Success of Yellow-Shafted, Red-Shafted, and Hybrid Flickers across a Hybrid Zone." Auk 103, no. 1 (January 1, 1986): 42–51. http://dx.doi.org/10.1093/auk/103.1.42.

Pełny tekst źródła

Streszczenie:

Abstract Alternative hypotheses of hybrid zones make specific predictions about reproductive components of fitness in the hybrids. The dynamic-equilibrium and reinforcement hypotheses are premised on reduced hybrid fitness, which should be apparent as reduced clutch or brood size or as increased embryonic mortality. The hybrid-superiority and introgression hypotheses predict normal clutch and brood size and embryonic mortality. Reproductive success was measured at four study sites on a transect across the hybrid zone between the Yellow- (Colaptes auratus auratus) and Red-shafted (C. a. cafer)

Style APA, Harvard, Vancouver, ISO itp.

2

Natcheva, Rayna, and Nils Cronberg. "What do we know about hybridization among bryophytes in nature?" Canadian Journal of Botany 82, no. 12 (December 1, 2004): 1687–704. http://dx.doi.org/10.1139/b04-139.

Pełny tekst źródła

Streszczenie:

Despite being recognized as a widespread and evolutionary important phenomenon among vascular plants, interspecific hybridization among bryophytes has been strongly underestimated. In the present review, we summarize knowledge about bryophyte hybrids that are found in nature. Mechanisms of reproductive isolation in bryophytes are compared with those in vascular plants. The morphological and genetic features of sporophytic hybrids and their gametophytic progeny are discussed, as well as some inferences about hybrid fitness. The data available indicate that spontaneous hybridization among bryoph

Style APA, Harvard, Vancouver, ISO itp.

3

Power, Jeffrey J., Fernanda Pinheiro, Simone Pompei, Viera Kovacova, Melih Yüksel, Isabel Rathmann, Mona Förster, Michael Lässig, and Berenike Maier. "Adaptive evolution of hybrid bacteria by horizontal gene transfer." Proceedings of the National Academy of Sciences 118, no. 10 (March 1, 2021): e2007873118. http://dx.doi.org/10.1073/pnas.2007873118.

Pełny tekst źródła

Streszczenie:

Horizontal gene transfer (HGT) is an important factor in bacterial evolution that can act across species boundaries. Yet, we know little about rate and genomic targets of cross-lineage gene transfer and about its effects on the recipient organism's physiology and fitness. Here, we address these questions in a parallel evolution experiment with two Bacillus subtilis lineages of 7% sequence divergence. We observe rapid evolution of hybrid organisms: gene transfer swaps ∼12% of the core genome in just 200 generations, and 60% of core genes are replaced in at least one population. By genomics, tra

Style APA, Harvard, Vancouver, ISO itp.

4

Arnold, Michael L., and Noland H. Martin. "Hybrid fitness across time and habitats." Trends in Ecology & Evolution 25, no. 9 (September 2010): 530–36. http://dx.doi.org/10.1016/j.tree.2010.06.005.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

5

Wolinska, Justyna, Barbara Keller, Kerstin Bittner, Sandra Lass, and Piet Spaak. "Do parasites lower Daphnia hybrid fitness?" Limnology and Oceanography 49, no. 4part2 (January 31, 2004): 1401–7. http://dx.doi.org/10.4319/lo.2004.49.4_part_2.1401.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

6

Wool, David, and Orna Bergerson. "Random environmental variation and inbreeding: effects on pure-strain and hybrid populations of flour beetles (Tribolium)." Canadian Journal of Genetics and Cytology 28, no. 6 (December 1, 1986): 889–98. http://dx.doi.org/10.1139/g86-124.

Pełny tekst źródła

Streszczenie:

The effect of inbreeding and of random environmental variation on fitness characters was studied in small populations derived from 10 inbred laboratory strains of Tribolium castaneum (I) and in 18 hybrids (IH) populations, obtained by crossing six mutant to three wild-type strains. Replicate population of each type were held in a constant (C) and a randomly varying (V) environment. Each replicate population was founded by a single pair of adults and one pair of sibs founded each subsequent generation. Thus four groups of inbreeding populations were created: IC, IV, IHC, and IHV. Outbred hybrid

Style APA, Harvard, Vancouver, ISO itp.

7

Gramlich, Susanne, and Elvira Hörandl. "Fitness of natural willow hybrids in a pioneer mosaic hybrid zone." Ecology and Evolution 6, no. 21 (October 5, 2016): 7645–55. http://dx.doi.org/10.1002/ece3.2470.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

8

Li, Meng Jian, and Wei Dong Geng. "Evaluation Fitness of Footwear Using Hybrid Simulation." Applied Mechanics and Materials 462-463 (November 2013): 1055–61. http://dx.doi.org/10.4028/www.scientific.net/amm.462-463.1055.

Pełny tekst źródła

Streszczenie:

This research is trying to develop a process for identifying comfortable shoe last for human feet. A hybrid of geometric model and physics based model is proposed to simulate the procedure of fitting foot into footwear. The system implemented is able to construct all meaningful slicing planes used in footwear industry. And all kinds of dimensions are measured for fitness check, especially the most important three girth of human feet and shoe last, i.e., ball girth, waist girth, and instep girth. Quantified Fitness range, known as dimensional difference (DD), is updated according to positive an

Style APA, Harvard, Vancouver, ISO itp.

9

Dybdahl, Mark F., Jukka Jokela, Lynda F. Delph, Britt Koskella, and Curtis M. Lively. "Hybrid Fitness in a Locally Adapted Parasite." American Naturalist 172, no. 6 (December 2008): 772–82. http://dx.doi.org/10.1086/592866.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

10

Dagilis, Andrius J., Mark Kirkpatrick, and Daniel I. Bolnick. "The evolution of hybrid fitness during speciation." PLOS Genetics 15, no. 5 (May 6, 2019): e1008125. http://dx.doi.org/10.1371/journal.pgen.1008125.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

11

Potts, BM. "Population Dynamics and Regeneration of a Hybrid Zone Between Eucalyptus risdonii Hook-F and E amygdalina Labill." Australian Journal of Botany 34, no. 3 (1986): 305. http://dx.doi.org/10.1071/bt9860305.

Pełny tekst źródła

Streszczenie:

Regeneration of a hybrid zone between E. amygdalina and E. risdonii and pure species stands following wildfire is reported, as well as the reproductive and vegetative fitness of parental and hybrid phenotypes. E. risdonii phenotypes dominated the seed rain and seedling cohort and there was clearly a marked fitness differential between E. amygdalina and E. risdonii at their boundary. When the F1 type hybrid is in competition with both parental types it is generally reproductively the least fit, although frequently vegetatively vigorous. Reduced fitness appears to extend to advanced generations

Style APA, Harvard, Vancouver, ISO itp.

12

Parris, Matthew J. "Hybridization in leopard frogs (Rana pipiens complex): terrestrial performance of newly metamorphosed hybrid and parental genotypes in field enclosures." Canadian Journal of Zoology 79, no. 9 (September 1, 2001): 1552–58. http://dx.doi.org/10.1139/z01-119.

Pełny tekst źródła

Streszczenie:

Terrestrial ecology has been largely neglected in the study of amphibian life histories because it is difficult to manipulate most species during the terrestrial stage. I examined the terrestrial performance of Rana blairi, Rana sphenocephala, and four hybrid (two F1 and two advanced generation) genotypes in replicated experimental enclosures to test for differences in traits related to juvenile terrestrial fitness. I produced all genotypes by means of artificial fertilizations using frogs collected from natural populations in central Missouri, and juvenile frogs were obtained from larvae rear

Style APA, Harvard, Vancouver, ISO itp.

13

Hewitt, Sarah K., Kobchai Duangrattanalert, Tim Burgis, Leo A. H. Zeef, Samina Naseeb, and Daniela Delneri. "Plasticity of Mitochondrial DNA Inheritance and its Impact on Nuclear Gene Transcription in Yeast Hybrids." Microorganisms 8, no. 4 (March 31, 2020): 494. http://dx.doi.org/10.3390/microorganisms8040494.

Pełny tekst źródła

Streszczenie:

Mitochondrial DNA (mtDNA) in yeast is biparentally inherited, but colonies rapidly lose one type of parental mtDNA, thus becoming homoplasmic. Therefore, hybrids between the yeast species possess two homologous nuclear genomes, but only one type of mitochondrial DNA. We hypothesise that the choice of mtDNA retention is influenced by its contribution to hybrid fitness in different environments, and the allelic expression of the two nuclear sub-genomes is affected by the presence of different mtDNAs in hybrids. Saccharomyces cerevisiae/S. uvarum hybrids preferentially retained S. uvarum mtDNA wh

Style APA, Harvard, Vancouver, ISO itp.

14

Nilsson, P. Anders, Kaj Hulthén, Ben B. Chapman, Lars-Anders Hansson, Jakob Brodersen, Henrik Baktoft, Jerker Vinterstare, Christer Brönmark, and Christian Skov. "Species integrity enhanced by a predation cost to hybrids in the wild." Biology Letters 13, no. 7 (July 2017): 20170208. http://dx.doi.org/10.1098/rsbl.2017.0208.

Pełny tekst źródła

Streszczenie:

Species integrity can be challenged, and even eroded, if closely related species can hybridize and produce fertile offspring of comparable fitness to that of parental species. The maintenance of newly diverged or closely related species therefore hinges on the establishment and effectiveness of pre- and/or post-zygotic reproductive barriers. Ecological selection, including predation, is often presumed to contribute to reduced hybrid fitness, but field evidence for a predation cost to hybridization remains elusive. Here we provide proof-of-concept for predation on hybrids being a postzygotic ba

Style APA, Harvard, Vancouver, ISO itp.

15

Ålund, Murielle, Simone Immler, Amber M. Rice, and Anna Qvarnström. "Low fertility of wild hybrid male flycatchers despite recent divergence." Biology Letters 9, no. 3 (June 23, 2013): 20130169. http://dx.doi.org/10.1098/rsbl.2013.0169.

Pełny tekst źródła

Streszczenie:

Postzygotic isolation may be important for maintaining species boundaries, particularly when premating barriers are incomplete. Little is known about the course of events leading from minor environmental mismatches affecting hybrid fitness to severe genetic incompatibilities causing sterility or inviability. We investigated whether reduced reproductive success of hybrid males was caused by suboptimal sperm traits or by more severe genetic incompatibilities in a hybrid zone of pied ( Ficedula hypoleuca ) and collared flycatchers ( F. albicollis ) on the island of Öland, Sweden. About 4 per cent

Style APA, Harvard, Vancouver, ISO itp.

16

Wade, M. J., N. A. Johnson, and G. Wardle. "Analysis of autosomal polygenic variation for the expression of Haldane's rule in flour beetles." Genetics 138, no. 3 (November 1, 1994): 791–99. http://dx.doi.org/10.1093/genetics/138.3.791.

Pełny tekst źródła

Streszczenie:

Abstract Haldane's rule states that, in interspecific crosses, when hybrid viability or fertility is diminished more in one sex of the hybrids than in the other, the heterogametic sex is more adversely affected. We used quantitative genetic methods to investigate the genetic basis of variation for the expression of the viability aspect of Haldane's rule when Tribolium castaneum males are crossed to Tribolium freemani females. Using a half-sib design, we found significant genetic variance for the expression of Haldane's rule, i.e., variation among T. castaneum sires in the hybrid sex ratios pro

Style APA, Harvard, Vancouver, ISO itp.

17

Healy, Timothy M., and Ronald S. Burton. "Strong selective effects of mitochondrial DNA on the nuclear genome." Proceedings of the National Academy of Sciences 117, no. 12 (March 10, 2020): 6616–21. http://dx.doi.org/10.1073/pnas.1910141117.

Pełny tekst źródła

Streszczenie:

Oxidative phosphorylation, the primary source of cellular energy in eukaryotes, requires gene products encoded in both the nuclear and mitochondrial genomes. As a result, functional integration between the genomes is essential for efficient adenosine triphosphate (ATP) generation. Although within populations this integration is presumably maintained by coevolution, the importance of mitonuclear coevolution in key biological processes such as speciation and mitochondrial disease has been questioned. In this study, we crossed populations of the intertidal copepodTigriopus californicusto disrupt

Style APA, Harvard, Vancouver, ISO itp.

18

Crowley, SE, IR Bradbury, AM Messmer, SJ Duffy, SS Islam, and IA Fleming. "Common-garden comparison of relative survival and fitness-related traits of wild, farm, and hybrid Atlantic salmon Salmo salar parr in nature." Aquaculture Environment Interactions 14 (March 3, 2022): 35–52. http://dx.doi.org/10.3354/aei00425.

Pełny tekst źródła

Streszczenie:

When escapee farmed Atlantic salmon Salmo salar interbreed with wild fish, the introgression of maladaptive genes can lower wild population productivity and alter key life history traits. To date, only a few European studies have compared wild, farm, and hybrid salmon under common conditions in the wild, isolating the influence of genetics on survival and fitness-related traits. Here, we examined the performance of experimentally derived Atlantic salmon fry from 4 cross types (wild, farm, and reciprocal F1 hybrids) during the first summer of growth at 3 locations in southern Newfoundland. Over

Style APA, Harvard, Vancouver, ISO itp.

19

Hatfield, Todd, and Dolph Schluter. "Ecological Speciation in Sticklebacks: Environment-Dependent Hybrid Fitness." Evolution 53, no. 3 (June 1999): 866. http://dx.doi.org/10.2307/2640726.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

20

Rhode, Jennifer M., and Mitchell B. Cruzan. "Contributions of Heterosis and Epistasis to Hybrid Fitness." American Naturalist 166, no. 5 (November 2005): E124—E139. http://dx.doi.org/10.1086/491798.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

21

Hatfield, Todd, and Dolph Schluter. "ECOLOGICAL SPECIATION IN STICKLEBACKS: ENVIRONMENT-DEPENDENT HYBRID FITNESS." Evolution 53, no. 3 (June 1999): 866–73. http://dx.doi.org/10.1111/j.1558-5646.1999.tb05380.x.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

22

Arnold, M. L., R. S. Cornman, and N. H. Martin. "Hybridization, hybrid fitness and the evolution of adaptations." Plant Biosystems - An International Journal Dealing with all Aspects of Plant Biology 142, no. 1 (March 2008): 166–71. http://dx.doi.org/10.1080/11263500701873018.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

23

Miller, Charles J. J., and Daniel R. Matute. "The Effect of Temperature on Drosophila Hybrid Fitness." G3: Genes|Genomes|Genetics 7, no. 2 (December 2, 2016): 377–85. http://dx.doi.org/10.1534/g3.116.034926.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

24

Freeman, Patrick. "Navigating Hybrid Communication Successfully as a Fitness Manager." ACSM'S Health & Fitness Journal 26, no. 1 (January 2022): 52–54. http://dx.doi.org/10.1249/fit.0000000000000730.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

25

Markula, Pirkko. "Barre Matters: Hybrid Formations of Ballet and Group Fitness." Somatechnics 11, no. 2 (August 2021): 191–210. http://dx.doi.org/10.3366/soma.2021.0351.

Pełny tekst źródła

Streszczenie:

Employing a variety of theoretical approaches, feminist researchers have critiqued the fitness industry of its singular emphasis on the impossible, narrowly defined feminine body ideal that is likely to cause more mental (e.g., body dissatisfaction) and physical ill health (eating disorders, injuries) than improve fitness. With the focus on social construction of gendered identities, there has been less problematisation of the materiality of the fitness practices and their impact on the cultural production of the moving body. In this article, I adopt a Latourian approach to seek for a more com

Style APA, Harvard, Vancouver, ISO itp.

26

Shivaramu, S., D. T. Vuong, M. Havelka, H. Šachlová, I. Lebeda, V. Kašpar, and M. Flajšhans. "Influence of interspecific hybridization on fitness-related traits in Siberian sturgeon and Russian sturgeon." Czech Journal of Animal Science 64, No. 2 (February 13, 2019): 78–88. http://dx.doi.org/10.17221/165/2018-cjas.

Pełny tekst źródła

Streszczenie:

Polyploidy in sturgeons makes them highly susceptible to interspecific hybridization, and these interspecific hybrids have been described in nature as well as in captivity. Nevertheless, the fitness-related traits between sturgeon hybrids and pure species have been poorly compared as yet. In the present study, we compared the reproductive parameters such as fertilization rate and hatching rate, growth traits and genetic polymorphism in the artificially produced hybrids of the Siberian sturgeon (Acipenser baerii) and Russian sturgeon (A. gueldenstaedtii) with their purebreds. Fertilization and

Style APA, Harvard, Vancouver, ISO itp.

27

Shivaramu, Sahana, Ievgen Lebeda, Vojtěch Kašpar, and Martin Flajšhans. "Intraspecific Hybrids Versus Purebred: A Study of Hatchery-Reared Populations of Sterlet Acipenser ruthenus." Animals 10, no. 7 (July 7, 2020): 1149. http://dx.doi.org/10.3390/ani10071149.

Pełny tekst źródła

Streszczenie:

Hatchery-reared sterlet originating from the Danube and Volga river basins that showed population-discriminatory alleles on at least one microsatellite locus were used to produce purebred (within-population) and hybrid crosses to evaluate intraspecific hybridization with respect to the genetic polymorphism and physiological fitness of fish for commercial aquaculture and, conservation programs. Reciprocal crossing assessed the effect of parent position. The fish were reared in indoor and outdoor tanks and monitored over 504 days for growth traits. The highest final mean body weight (144.9 ± 59.

Style APA, Harvard, Vancouver, ISO itp.

28

Masello, Juan F., Petra Quillfeldt, Edson Sandoval-Castellanos, Rachael Alderman, Luciano Calderón, Yves Cherel, Theresa L. Cole, et al. "Additive Traits Lead to Feeding Advantage and Reproductive Isolation, Promoting Homoploid Hybrid Speciation." Molecular Biology and Evolution 36, no. 8 (April 26, 2019): 1671–85. http://dx.doi.org/10.1093/molbev/msz090.

Pełny tekst źródła

Streszczenie:

Abstract Speciation through homoploid hybridization (HHS) is considered extremely rare in animals. This is mainly because the establishment of reproductive isolation as a product of hybridization is uncommon. Additionally, many traits are underpinned by polygeny and/or incomplete dominance, where the hybrid phenotype is an additive blend of parental characteristics. Phenotypically intermediate hybrids are usually at a fitness disadvantage compared with parental species and tend to vanish through backcrossing with parental population(s). It is therefore unknown whether the additive nature of hy

Style APA, Harvard, Vancouver, ISO itp.

29

Houde, Aimee Lee S., Dylan J. Fraser, and Jeffrey A. Hutchings. "Fitness-related consequences of competitive interactions between farmed and wild Atlantic salmon at different proportional representations of wild–farmed hybrids." ICES Journal of Marine Science 67, no. 4 (December 10, 2009): 657–67. http://dx.doi.org/10.1093/icesjms/fsp272.

Pełny tekst źródła

Streszczenie:

Abstract Houde, A. S., Fraser, D. J., and Hutchings, J. A. 2010. Fitness-related consequences of competitive interactions between farmed and wild Atlantic salmon at different proportional representations of wild–farmed hybrids. – ICES Journal of Marine Science, 67: 657–667. Escaped farmed fish possess heritable characteristics that may give them and their wild–farmed hybrid offspring a competitive advantage over wild fish. Limited research has examined whether the results of wild vs. farmed pairwise behavioural contests can predict the change in fitness-related traits of wild fish when exposed

Style APA, Harvard, Vancouver, ISO itp.

30

Latour, Yasmin, Marco Perriat-Sanguinet, Pierre Caminade, Pierre Boursot, Carole M. Smadja, and Guila Ganem. "Sexual selection against natural hybrids may contribute to reinforcement in a house mouse hybrid zone." Proceedings of the Royal Society B: Biological Sciences 281, no. 1776 (February 7, 2014): 20132733. http://dx.doi.org/10.1098/rspb.2013.2733.

Pełny tekst źródła

Streszczenie:

Sexual selection may hinder gene flow across contact zones when hybrid recognition signals are discriminated against. We tested this hypothesis in a unimodal hybrid zone between Mus musculus musculus and Mus musculus domesticus where a pattern of reinforcement was described and lower hybrid fitness documented. We presented mice from the border of the hybrid zone with a choice between opposite sex urine from the same subspecies versus hybrids sampled in different locations across the zone. While no preference was evidenced in domesticus mice, musculus males discriminated in favour of musculus s

Style APA, Harvard, Vancouver, ISO itp.

31

Barreto, Felipe S., and Ronald S. Burton. "Elevated oxidative damage is correlated with reduced fitness in interpopulation hybrids of a marine copepod." Proceedings of the Royal Society B: Biological Sciences 280, no. 1767 (September 22, 2013): 20131521. http://dx.doi.org/10.1098/rspb.2013.1521.

Pełny tekst źródła

Streszczenie:

Aerobic energy production occurs via the oxidative phosphorylation pathway (OXPHOS), which is critically dependent on interactions between the 13 mitochondrial DNA (mtDNA)-encoded and approximately 70 nuclear-encoded protein subunits. Disruptive mutations in any component of OXPHOS can result in impaired ATP production and exacerbated oxidative stress; in mammalian systems, such mutations are associated with ageing as well as numerous diseases. Recent studies have suggested that oxidative stress plays a role in fitness trade-offs in life-history evolution and functional ecology. Here, we show

Style APA, Harvard, Vancouver, ISO itp.

32

Brucker, Robert M., and Seth R. Bordenstein. "The Hologenomic Basis of Speciation: Gut Bacteria Cause Hybrid Lethality in the Genus Nasonia." Science 341, no. 6146 (July 18, 2013): 667–69. http://dx.doi.org/10.1126/science.1240659.

Pełny tekst źródła

Streszczenie:

Although the gut microbiome influences numerous aspects of organismal fitness, its role in animal evolution and the origin of new species is largely unknown. Here we present evidence that beneficial bacterial communities in the guts of closely related species of the genus Nasonia form species-specific phylosymbiotic assemblages that cause lethality in interspecific hybrids. Bacterial constituents and abundance are irregular in hybrids relative to parental controls, and antibiotic curing of the gut bacteria significantly rescues hybrid survival. Moreover, feeding bacteria to germ-free hybrids r

Style APA, Harvard, Vancouver, ISO itp.

33

Rice, Amber M., and Michael A. McQuillan. "Maladaptive learning and memory in hybrids as a reproductive isolating barrier." Proceedings of the Royal Society B: Biological Sciences 285, no. 1879 (May 30, 2018): 20180542. http://dx.doi.org/10.1098/rspb.2018.0542.

Pełny tekst źródła

Streszczenie:

Selection against hybrid offspring, or postzygotic reproductive isolation, maintains species boundaries in the face of gene flow from hybridization. In this review, we propose that maladaptive learning and memory in hybrids is an important, but overlooked form of postzygotic reproductive isolation. Although a role for learning in premating isolation has been supported, whether learning deficiencies can contribute to postzygotic isolation has rarely been tested. We argue that the novel genetic combinations created by hybridization have the potential to impact learning and memory abilities throu

Style APA, Harvard, Vancouver, ISO itp.

34

Zhang, Zebin, Devin P. Bendixsen, Thijs Janzen, Arne W. Nolte, Duncan Greig, and Rike Stelkens. "Recombining Your Way Out of Trouble: The Genetic Architecture of Hybrid Fitness under Environmental Stress." Molecular Biology and Evolution 37, no. 1 (September 13, 2019): 167–82. http://dx.doi.org/10.1093/molbev/msz211.

Pełny tekst źródła

Streszczenie:

Abstract Hybridization between species can either promote or impede adaptation. But we know very little about the genetic basis of hybrid fitness, especially in nondomesticated organisms, and when populations are facing environmental stress. We made genetically variable F2 hybrid populations from two divergent Saccharomyces yeast species. We exposed populations to ten toxins and sequenced the most resilient hybrids on low coverage using ddRADseq to investigate four aspects of their genomes: 1) hybridity, 2) interspecific heterozygosity, 3) epistasis (positive or negative associations between n

Style APA, Harvard, Vancouver, ISO itp.

35

Ali, Zain Anwar, and Han Zhangang. "Multi-unmanned aerial vehicle swarm formation control using hybrid strategy." Transactions of the Institute of Measurement and Control 43, no. 12 (April 19, 2021): 2689–701. http://dx.doi.org/10.1177/01423312211003807.

Pełny tekst źródła

Streszczenie:

This study proposes a novel hybrid strategy for formation control of a swarm of multiple unmanned aerial vehicles (UAVs). To enhance the fitness function of the formation, this research offers a three-dimensional formation control for a swarm using particle swarm optimization (PSO) with Cauchy mutant (CM) operators. We use CM operators to enhance the PSO algorithm by examining the varying fitness levels of the local and global optimal solutions for UAV formation control. We establish the terrain and the fixed-wing UAV model. Furthermore, it also models different control parameters of the UAV a

Style APA, Harvard, Vancouver, ISO itp.

36

Schäfle, Tobias Rainer, Marcel Mitschke, and Naoki Uchiyama. "Generation of Optimal Coverage Paths for Mobile Robots Using Hybrid Genetic Algorithm." Journal of Robotics and Mechatronics 33, no. 1 (February 20, 2021): 11–23. http://dx.doi.org/10.20965/jrm.2021.p0011.

Pełny tekst źródła

Streszczenie:

This paper presents new optimal offline approaches to solve the coverage path planning problem. A novel hybrid genetic algorithm (HGA), which uses, the turn-away starting point and backtracking spiral algorithms for performing local search, is proposed for grid-based environmental representations. The HGA algorithm is validated using the following three different fitness functions: the number of cell visits, traveling time, and a new energy fitness function based on experimentally acquired energy values of fundamental motions. Computational results show that compared to conventional methods, H

Style APA, Harvard, Vancouver, ISO itp.

37

Kelly, John K., and Mohamed A. F. Noor. "Speciation by Reinforcement: A Model Derived from Studies of Drosophila." Genetics 143, no. 3 (July 1, 1996): 1485–97. http://dx.doi.org/10.1093/genetics/143.3.1485.

Pełny tekst źródła

Streszczenie:

Abstract Reinforcement is an increase in premating reproductive isolation between taxa resulting from selection against hybrids. We present a model of reinforcement with a novel type of selection on female mating behavior. Previous models of reinforcement have focused on the divergence of female mating preferences between nascent species. We suggest that an increase in the level of female mating discrimination can yield reinforcement without further divergence of either male characters or female preferences. This model indicates that selection on mating discrimination is a viable mechanism for

Style APA, Harvard, Vancouver, ISO itp.

38

Voice, D. G., and R. B. Chapman. "Imported insecticide resistance in diamondback moth." New Zealand Plant Protection 53 (August 1, 2000): 83–86. http://dx.doi.org/10.30843/nzpp.2000.53.3617.

Pełny tekst źródła

Streszczenie:

Laboratory experiments were conducted to determine whether resistance in an Australian population of diamondback moth could be conferred to a local susceptible population of diamondback moth (Plutella xylostella) Bioassays with larvae showed a 715fold difference in response at the LC50 to alphacypermethrin between the resistant imported and local susceptible populations The response of a hybrid strain from these populations displayed a lower level of resistance and a backcross of hybrids with the parents an even lower level of resistance The hybrid strain did not suffer any fitness disadvantag

Style APA, Harvard, Vancouver, ISO itp.

39

Lu, Yuan, Angel Sandoval, Sarah Voss, Zhao Lai, Susanne Kneitz, Will Boswell, Mikki Boswell, et al. "Oncogenic allelic interaction inXiphophorushighlights hybrid incompatibility." Proceedings of the National Academy of Sciences 117, no. 47 (November 9, 2020): 29786–94. http://dx.doi.org/10.1073/pnas.2010133117.

Pełny tekst źródła

Streszczenie:

Mixing genomes of different species by hybridization can disrupt species-specific genetic interactions that were adapted and fixed within each species population. Such disruption can predispose the hybrids to abnormalities and disease that decrease the overall fitness of the hybrids and is therefore named as hybrid incompatibility. Interspecies hybridization between southern platyfish and green swordtails leads to lethal melanocyte tumorigenesis. This occurs in hybrids with tumor incidence following progeny ratio that is consistent with two-locus interaction, suggesting melanoma development is

Style APA, Harvard, Vancouver, ISO itp.

40

Markula, Pirkko. "“Tuning into One’s Self:” Foucault’s Technologies of the Self and Mindful Fitness." Sociology of Sport Journal 21, no. 3 (September 2004): 302–21. http://dx.doi.org/10.1123/ssj.21.3.302.

Pełny tekst źródła

Streszczenie:

This article explores the application of Michel Foucault’s technologies of the self—practices of freedom that are characterized by ethics of self-care, critical awareness, and aesthetic self-stylization. Foucault’s argument states that the technologies of self can act as practices of freedom from disciplinary, discursive body practices. Based on ethnographic fieldwork, this study examines the intersections of Foucault’s theory with commercial fitness practices to identify possibilities for changing the dominant, feminine body discourse. The focus is on fitness practices collectively defined as

Style APA, Harvard, Vancouver, ISO itp.

41

Mehta, Ridhima. "Hybrid Fuzzy-Genetic Model for Fitness-Based Performance Optimization in Wireless Networks." International Journal of Computational Intelligence and Applications 20, no. 01 (January 22, 2021): 2150008. http://dx.doi.org/10.1142/s1469026821500085.

Pełny tekst źródła

Streszczenie:

In recent times, the application of autonomic soft computing techniques for design and optimization of wireless access networks is progressively becoming prevalent. These computational learning techniques are capable of handling uncertain and imprecise networking information while driving toward the optimal solution set in the problem search space. The approach proposed by this paper presents the application of the fuzzy logic inference combined with the evolutionary genetic algorithm to optimize the performance parameters in wireless networks. In particular, we consider optimal bit rate alloc

Style APA, Harvard, Vancouver, ISO itp.

42

BARTON, N. H., and M. SHPAK. "The effect of epistasis on the structure of hybrid zones." Genetical Research 75, no. 2 (April 2000): 179–98. http://dx.doi.org/10.1017/s0016672399004334.

Pełny tekst źródła

Streszczenie:

Within hybrid zones that are maintained by a balance between selection and dispersal, linkage disequilibrium is generated by the mixing of divergent populations. This linkage disequilibrium causes selection on each locus to act on all other loci, thereby steepening clines, and generating a barrier to gene flow. Diffusion models predict simple relations between the strength of linkage disequilibrium and the dispersal rate, σ, and between the barrier to gene flow, B, and the reduction in mean fitness, W¯. The aim of this paper is to test the accuracy of these predictions by comparison with an ex

Style APA, Harvard, Vancouver, ISO itp.

43

Xia, Xuewen, Lei Tong, Yinglong Zhang, Xing Xu, Honghe Yang, Ling Gui, Yuanxiang Li, and Kangshun Li. "NFDDE: A novelty-hybrid-fitness driving differential evolution algorithm." Information Sciences 579 (November 2021): 33–54. http://dx.doi.org/10.1016/j.ins.2021.07.082.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

44

Semlitsch, Raymond D., Joyce Pickle, Matthew J. Parris, and Richard D. Sage. "Jumping performance and short-term repeatability of newly metamorphosed hybrid and parental leopard frogs ( Rana sphenocephala and Rana blairi )." Canadian Journal of Zoology 77, no. 5 (October 1, 1999): 748–54. http://dx.doi.org/10.1139/z99-036.

Pełny tekst źródła

Streszczenie:

Differential fitness between hybrid and parental genotypes plays a critical role in explaining the maintenance of natural hybrid zones as well as the production of novel genetic variation that may lead to diversification. Because locomotor performance is a reliable and practical measure of potential fitness related to morphological variation, we tested for differences in jumping performance among parental and hybrid genotypes of newly metamorphosed leopard frogs (Rana sphenocephala and Rana blairi). Tadpoles of the parental species and primary and backcross hybrid tadpoles, generated from arti

Style APA, Harvard, Vancouver, ISO itp.

45

Setiawan, Anas, Panca Mudjirahardjo, and Wijono . "Automatic Voltage Regulator (AVR) Optimization Based on PID Using the Hybrid Grey Wolf Optimization - Genetic Algorithm (HGWGA) Method." International Journal of Computer Applications Technology and Research 10, no. 6 (June 2021): 136–41. http://dx.doi.org/10.7753/ijcatr1006.1002.

Pełny tekst źródła

Streszczenie:

In the generator set (genset), the voltage stability system is affected by the excitation system controlled by control circuit called AVR (Automatic Voltage Regulator). One of the important components in the AVR system is the algorithm of the controller. The application of the PID control method has been widely used in the design of AVR controllers. This study applies the GWO-GA (Grey Wolf Optimization - Genetic Algorithm) hybrid method on PID parameters setting. The best transient automatic voltage regulator (AVR) response results were obtained when using the hybrid genetic algorithm - grey w

Style APA, Harvard, Vancouver, ISO itp.

46

Saingamsook, Jassada, Jintana Yanola, Nongkran Lumjuan, Catherine Walton, and Pradya Somboon. "Investigation of Relative Development and Reproductivity Fitness Cost in Three Insecticide-Resistant Strains of Aedes aegypti from Thailand." Insects 10, no. 9 (August 22, 2019): 265. http://dx.doi.org/10.3390/insects10090265.

Pełny tekst źródła

Streszczenie:

Knockdown resistance (kdr) and detoxification enzymes are major resistance mechanisms in insecticide-resistant Aedes aegypti throughout the world. Persistence of the resistance phenotype is associated with high fitness of resistance alleles in the absence of insecticide pressure. This study determined the relative fitness cost of three insecticide-resistant strains of Aedes aegypti—PMD, PMD-R, and UPK-R—and a hybrid under similar laboratory conditions in the absence of insecticide. The PMD strain is resistant to DDT with no kdr alleles; the PMD-R is resistant to DDT and permethrin with 1534C h

Style APA, Harvard, Vancouver, ISO itp.

47

Trucco, Federico, Tatiana Tatum, Kenneth R. Robertson, A. Lane Rayburn, and Patrick J. Tranel. "Characterization of Waterhemp (Amaranthus tuberculatus) × Smooth Pigweed (A. hybridus) F1Hybrids." Weed Technology 20, no. 1 (March 2006): 14–22. http://dx.doi.org/10.1614/wt-05-018r.1.

Pełny tekst źródła

Streszczenie:

In the state of Illinois, waterhemp and smooth pigweed are among the worst agricultural weeds. Previous research shows high potential for hybridization between these two species. However, the actual occurrence of hybrids in natural settings is still uncertain. Morphological similarity between hybrids and waterhemp makes field surveys of hybrids difficult to conduct. The main purpose of this study was to characterize the morphology of waterhemp × smooth pigweed F1hybrids, emphasizing evaluation of characters that may allow for hybrid discrimination in fieldAmaranthuscommunities. Concurrently, t

Style APA, Harvard, Vancouver, ISO itp.

48

Kyan, Akira, Minoru Takakura, and Masaya Miyagi. "Does Physical Fitness Affect Academic Achievement among Japanese Adolescents? A Hybrid Approach for Decomposing Within-Person and Between-Persons Effects." International Journal of Environmental Research and Public Health 15, no. 9 (September 1, 2018): 1901. http://dx.doi.org/10.3390/ijerph15091901.

Pełny tekst źródła

Streszczenie:

Positive association between physical fitness and academic achievement in adolescents has been suggested yet the causal effect of physical fitness on academic achievement remains unclear. This study examined if longitudinal changes in physical fitness were associated with changes in academic achievement among junior high school students. Analyses were based on a two-year with three time-point data of 567 students (aged 12–13 years old at the baseline-point; 303 boys) who entered in five Japanese junior high schools in 2015. Academic achievement was evaluated using the student’s overall grade p

Style APA, Harvard, Vancouver, ISO itp.

49

Hora, Katerina H., František Marec, Peter Roessingh, and Steph B. J. Menken. "Limited intrinsic postzygotic reproductive isolation despite chromosomal rearrangements between closely related sympatric species of small ermine moths (Lepidoptera: Yponomeutidae)." Biological Journal of the Linnean Society 128, no. 1 (June 24, 2019): 44–58. http://dx.doi.org/10.1093/biolinnean/blz090.

Pełny tekst źródła

Streszczenie:

Abstract In evolutionarily young species and sympatric host races of phytophagous insects, postzygotic incompatibility is often not yet fully developed, but reduced fitness of hybrids is thought to facilitate further divergence. However, empirical evidence supporting this hypothesis is limited. To assess the role of reduced hybrid fitness, we studied meiosis and fertility in hybrids of two closely related small ermine moths, Yponomeuta padella and Yponomeuta cagnagella, and determined the extent of intrinsic postzygotic reproductive isolation. We found extensive rearrangements between the kary

Style APA, Harvard, Vancouver, ISO itp.

50

Suri, Shelza, and Ritu Vijay. "A Bi-objective Genetic Algorithm Optimization of Chaos-DNA Based Hybrid Approach." Journal of Intelligent Systems 28, no. 2 (April 24, 2019): 333–46. http://dx.doi.org/10.1515/jisys-2017-0069.

Pełny tekst źródła

Streszczenie:

Abstract The paper implements and optimizes the performance of a currently proposed chaos-deoxyribonucleic acid (DNA)-based hybrid approach to encrypt images using a bi-objective genetic algorithm (GA) optimization. Image encryption is a multi-objective problem. Optimizing the same using one fitness function may not be a good choice, as it can result in different outcomes concerning other fitness functions. The proposed work initially encrypts the given image using chaotic function and DNA masks. Further, GA uses two fitness functions – entropy with correlation coefficient (CC), entropy with u

Style APA, Harvard, Vancouver, ISO itp.

Oferujemy zniżki na wszystkie plany premium dla autorów, których prace zostały uwzględnione w tematycznych zestawieniach literatury. Skontaktuj się z nami, aby uzyskać unikalny kod promocyjny!