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Allometry as evidence of sexual selection in monochromatic birds: the case of the Coscoroba Swan (Anseriformes: Anatidae) Rev. Bras. Zool.
Calabuig,Cecilia P.; Green,Andy J.; Muriel,Roberto; Katzenberger,Marco; Patino-Martinez,Juan; Moreira,Heden M..
The Coscoroba Swan, Coscoroba coscoroba (Molina, 1782), is a poorly known aberrant Anserine endemic to South America. We captured adult birds (189 male, 157 female) from the largest population in Brazil at the Taim Ecological Reserve, State of Rio Grande do Sul, Brazil. Different patterns between sexes can reflect differences in selection, and positive allometry may indicate that a character is sexually selected. We used body weight and 10 morphological measurements to examine allometric differences between males and females of C. coscoroba. Males were consistently larger than females. Analysis of scaling relationships against body mass showed that nostril, tail, wing and bill height were positively allometric (i.e., heavier birds had relatively larger...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Monomorphic; Natural selection; Waterfowl; Scaling.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702013000400008
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An evolutionary frame of work to study physiological adaptation to high altitudes RChHN
REZENDE,ENRICO L.; GOMES,FERNANDO R.; GHALAMBOR,CAMERON K.; RUSSELL,GREGORY A.; CHAPPELLl,MARK A..
How complex physiological systems evolve is one of the major questions in evolutionary physiology. For example, how traits interact at the physiological and genetic level, what are the roles of development and plasticity in Darwinian evolution, and eventually how physiological traits will evolve, remains poorly understood. In this article we summarize the current frame of work evolutionary physiologists are employing to study the evolution of physiological adaptations, as well as the role of developmental and reversible phenotypic plasticity in this context. We also highlight representative examples of how the integration of evolutionary and developmental physiology, concomitantly with the mechanistic understanding of physiological systems, can provide a...
Tipo: Journal article Palavras-chave: Adaptation; Evolutionary processes; Natural selection; Life-history; Oxygen availability; Phenotypic plasticity.
Ano: 2005 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2005000200016
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Apport des informations moléculaires et cellulaires pour la caractérisation de la résistance de l'huître plate européenne vis-à-vis de la bonamiose, et pour la détection de signatures de la sélection naturelle ArchiMer
Harrang, Estelle.
The European flat oyster, an endemic species from European coasts, has been classified in the category of "endangered and/or declining species" since 2003. Indeed, the natural beds of this oyster, consumed since ancient times, have gradually been decimated by over-exploitation and by successive emergence of parasitic diseases. The parasite that causes the disease called bonamiosis has contributed to drastically reduce the French and European aquacultural production of flat oyster. Marine bivalve molluscs display two specificities that restrict possibilities to fight against diseases: they are grown in an open environment, and possess an innate immune system lacking in adaptive response. In this context, the selection of animaIs naturally resistant to...
Tipo: Text Palavras-chave: Huître plate Européenne; Ostre edulis; Bonamiose; Bonamia ostreae; Marqueurs SNP; Expression génique; Activité hémocytaire; Cartographie de liaison; QTL; EQTL; Populations naturelles; Diversité génétique; Sélection naturelle; European flat oyster; Ostrea edulis; Bonamiosis; Bonamia ostreae; SNP markers; Gene expression; Haemocytic activity; Linkage map; QTL; EQTL; Natural populations; Genetic diversity; Genetic structure; Natural selection.
Ano: 2012 URL: http://archimer.ifremer.fr/doc/00127/23785/21702.pdf
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Beyond Darwin: On the role of niche construction and self-organization in evolution RChHN
MARQUET,PABLO A.
In this essay I point out to two processes that can potentially complement the classical view of evolution by natural selection as outlined by Darwin, which captures only part of the processes driving adaptive evolution. This classical view should be complemented with sources of order generated within the biological system itself in response to its own structure and dynamics (i.e. self-organization) and by considering the existence of a fundamental circularity in the interaction between the organism and its environment, such that the action of the organisms modify their selective environment thereby affecting their own evolution. The formalization and inclusión of these two processes (and their interaction) represent major challenges and opportunities for...
Tipo: Journal article Palavras-chave: Darwin; Natural selection; Self-organization.
Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2009000400004
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Combating footnote status in evolutionary theory Naturalis
Jenner, R.A..
Tipo: Book review Palavras-chave: Evolution; Natural selection; Variation; Developmental bias; 42.21.
Ano: 2005 URL: http://www.repository.naturalis.nl/record/215632
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Effect of harvesting times on agronomic characteristics of industrial cassava genotypes. Repositório Alice
LESSA, L. S.; LEDO, C. A. da S.; SANTOS, V. da S..
The use of cassava genotypes low-yield coupled with inappropriate harvest times lead to the country?s low average yield. This study aimed to evaluate the agronomic characteristics of cassava genotypes at different harvest times in the Recôncavo region of Bahia. The experiment was conducted during two crop cycles in Cruz das Almas, Bahia, with eight cassava genotypes (BRS Poti Branca, BRS Caipira, BRS Kiriris, BRS Verdinha, BRS Tapioqueira, 9624-09, 98150-06 and 9783-13) were evaluated at different harvest times. The characteristics yield of shoot, root, flour and starch, root dry matter and harvest index were evaluated, as well as their correlation with the harvest time. Data were submitted to analysis of variance and fitted to linear regression models....
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Fitomejoramiento; Yuca; Selección natural; Temporada de cosecha; Rendimiento de los cultivos; Análisis estadístico; Análisis de varianza; Análise de variância; Modelos lineales; Bahia; Recôncavo da Bahia (BA); Melhoramento Genético Vegetal; Mandioca; Manihot Esculenta; Seleção Genótipa; Características Agronômicas; Época de Colheita; Produtividade; Análise Estatística; Regressão Linear; Plant breeding; Cassava; Natural selection; Agronomic traits; Harvest date; Crop yield; Statistical analysis; Analysis of variance; Linear models.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1108664
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Effect of natural selection on common bean (Phaseolus vulgaris) microsatellite alleles Genet. Mol. Biol.
Rodrigues,Taislene Butarello; Santos,João Bosco dos.
The effect of natural selection on microsatellite simple sequence repeat (SSR) alleles was investigated in two distinct common bean (Phaseolus vulgaris) generations (F8 and F24) derived from the cross between the P. vulgaris cultivars Carioca MG x ESAL 686. The F2 segregant population was propagated by the bulk method and 107 plants were sampled in two generations (F8 and F24). Each plant generated one family which was replicated by the bulk method to F8:11 and F24:27 families from which DNA was extracted. Thirty pairs of microsatellite primers were polymorphic for the parents and the bulk of the F24:27 families. Out of 30 loci selected by natural selection, 29 microsatellite alleles came from the Carioca MG parent and one allele came from the ESAL 686...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Natural selection; Microsatellite markers; Phaseolus vulgaris; Adaptation.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572006000200024
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Effect of natural selection on multilocation bulk breeding populations of rice (Oryza sativa L.) International Rice Research Institute
Ryu, Hae Yeong.
xxv, 167 p. : ill. Thesis (Ph.D.) -- University of the Philippines at Los Baños
Tipo: Thesis Palavras-chave: Natural selection; Rice; Plant breeding.
Ano: 1998 URL: http://hdl.handle.net/123456789/543
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Evaluation of genotype x environment interactions in cotton using the method proposed by Eberhart and Russell and reaction norm models. Repositório Alice
ALVES, R. S.; TEODORO, P. E.; FARIAS, F. C.; FARIAS, F. J. C.; CARVALHO, L. P. de; RODRIGUES, J. I. S.; BHERING, L. L.; RESENDE, M. D. V. de.
Cotton produces one of the most important textile fibers of the world and has great relevance in the world economy. It is an economically important crop in Brazil, which is the world?s fifth largest producer. However, studies evaluating the genotype x environment (G x E) interactions in cotton are scarce in this country. Therefore, the goal of this study was to evaluate the G x E interactions in two important traits in cotton (fiber yield and fiber length) using the method proposed by Eberhart and Russell (simple linear regression) and reaction norm models (random regression). Eight trials with sixteen upland cotton genotypes, conducted in a randomized block design, were used. It was possible to identify a genotype with wide adaptability and stability for...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Genetic selection; Stability and adaptability; Mixed model methodology; Random regression; Gossypium hirsutum; Seleção genética; Natural selection.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1083385
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Ever since Darwin? RChHN
CAMUS,PATRICIO A.
Throughout the whole year 2009, the global biological community has celebrated the legacy of Charles Darwin, commemorating the anniversaries of his birth and the publication of "The origin", one of the most influential books of modern history. In this context, the Revista Chilena de Historia Natural inaugurates its new "Special Features" section with four independent essays dealing with the past, present and future of Darwin's ideas. This initial presentation focuses on some loóse ends of this Darwinfest, particularly on some forgotten anniversaries directly or indirectly related with Darwin's, and summarizes the contributions of the three essays following this introduction in the present issue.
Tipo: Journal article Palavras-chave: Darwinism; Lamarck; Natural selection; Wallace.
Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2009000400001
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Genetic parameters and resistance of cacao progenies to ceratocystis wilt under natural infection. Repositório Alice
YAMADA, M. M.; FALEIRO, F. G.; LOPES, U. V.; PIRES, J. L..
O objetivo deste trabalho foi avaliar a resistência do fungo Ceratocystis cacaofunesta, que causa a murcha de ceratocystis, doença letal do cacaueiro. Em março de 2005, na Estação Experimental Joaquim Bahiana do Centro de Pesquisas do Cacau (Cepec), situada no município de Itajuípe, Bahia, Brasil foi instalado no campo um experimento com progênies de 27 cruzamentos dispostos em blocos ao acaso no espaçamento de 3x3 metros com parcelas de 30 plantas e 4 repetições, totalizando 120 plantas/cruzamento. As plantas das progênies dos 27 cruzamentos foram avaliadas em relação à doença, e, em outubro de 2012, os dados da incidência de plantas mortas foram submetidos à análise de variância e da herdabilidade. As médias de incidência da doença variaram de 0,83 a...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Murcha de ceratocystis; Seleção natural; Variância; Herdabilidade; Cacau; Theobroma cacao; Doença de planta; Fungo; Variedade resistente; Theobroma cacao; Natural selection; Variance; Heritability; Fungal diseases of plants.
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1043103
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Genetic potential of common bean progenies obtained by different breeding methods evaluated in various environments. Repositório Alice
PONTES JUNIOR, V. A.; MELO, P. G. S.; PEREIRA, H. S.; MELO, L. C..
Grain yield is strongly influenced by the environment, has polygenic and complex inheritance, and is a key trait in the selection and recommendation of cultivars. Breeding programs should efficiently explore the genetic variability resulting from crosses by selecting the most appropriate method for breeding in segregating populations. The goal of this study was to evaluate and compare the genetic potential of common bean progenies of carioca grain for grain yield, obtained by different breeding methods and evaluated in different environments. Progenies originating from crosses between lines and CNFC 7812 and CNFC 7829 were replanted up to the F-7 generation using three breeding methods in segregating populations: population (bulk), bulk within F-2...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Feijão; Phaseolus vulgaris; Melhoramento genético vegetal; Beans; Genotype-environment interaction; Plant breeding; Natural selection.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1085808
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Genetic variability and natural selection at the ligand domain of the Duffy binding protein in Brazilian Plasmodium vivax populations. Repositório Alice
SOUSA, T. N.; TARAZONA-SANTOS, E. M.; WILSON, D. J.; MADUREIRA, A. P.; FALCAO, P. R. K.; FONTES, C. J. F.; GIL, L. H. S.; FERREIRA, M. U.; CARVALHO, L. H.; BRITO, C. F. A..
Background. Plasmodium vivax malaria is a major public health challenge in Latin America, Asia and Oceania, with 130-435 million clinical cases per year worldwide. Invasion of host blood cells by P. vivax mainly depends on a type I membrane protein called Duffy binding protein (PvDBP). The erythrocyte-binding motif of PvDBP is a 170 amino-acid stretch located in its cysteine-rich region II (PvDBPII), which is the most variable segment of the protein. Methods. To test whether diversifying natural selection has shaped the nucleotide diversity of PvDBPII in Brazilian populations, this region was sequenced in 122 isolates from six different geographic areas. A Bayesian method was applied to test for the action of natural selection under a population genetic...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Malária; Seleção natural; Modelagem estrutural; Polimorfismo; Variabilidade genética; Plasmodium vivax; Natural selection; Structural modelling; Polymorphism; Genetic variability.
Ano: 2010 URL: http://www.alice.cnptia.embrapa.br/handle/doc/867894
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Is the evolutionary theory still useful?: A review with examples RChHN
NESPOLO,ROBERTO F.
Evolutionary biology is experiencing an exceptional process of revisión and outreach because of the 200-anniversary if the birth of Charles Darwin. As a consequence, the study of organic evolution and also its teaching are being discussed at several levels, by evolutionary biologists, biologists and scholars outside evolutionary biology and by the general public. In this scenario, a didactic explanation of how biologists address evolutionary research in real populations seems to be useful. Using actual research examples, here I tried to outline how the classic theory (termed here as the "basic scheme") is useful to answer relevant questions in biology and how a less dogmatic paradigm (or a more versatile one) would be needed when dealing with the most...
Tipo: Journal article Palavras-chave: Character displacement; Microevolution; Modern synthesis; Natural selection; Population genetics.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2010000400003
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Morphological divergence rate tests for natural selection: uncertainty of parameter estimation and robustness of results Genet. Mol. Biol.
Monteiro,Leandro R.; Gomes-Jr,José L..
In this study, we used a combination of geometric morphometric and evolutionary genetics methods for the inference of possible mechanisms of evolutionary divergence. A sensitivity analysis for the constant-heritability rate test results regarding variation in genetic and demographic parameters was performed, in order to assess the relative influence of uncertainty of parameter estimation on the robustness of test results. As an application, we present a study on body shape variation among populations of the poeciliine fish Poecilia vivipara inhabiting lagoons of the quaternary plains in northern Rio de Janeiro State, Brazil. The sensitivity analysis showed that, in general, the most important parameters are heritability, effective population size and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Divergence rate test; Natural selection; Poecilia vivipara; Statistical shape analysis; Geographic variation.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000200028
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Natural selection and family X location interaction in the common (dry) bean plant Genet. Mol. Biol.
Pirola,Luís Henrique; Ramalho,Magno Antonio Patto; Carneiro,José Eustáquio S.; Abreu,Ângela de Fátima Barbosa.
Natural selection takes place while advancing generations of segregant populations of self pollinating species by the population (bulk) method. There is evidence that it maintains the individuals with greater grain yield. The question arises whether natural selection preserves the individuals which are more adapted only to the environment where the generation advance occurred, that is, if it contributes to increasing the genotype x environment interaction in the family assessment. This study was carried out to check this hypothesis in the common bean plant using families derived from a segregating population from a cross between the Carioca MG x ESAL 686 cultivars. The segregating populations increase in homozygosity was obtained by the population (bulk)...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Genotype x environment interaction; Heritability; Common bean; Phaseolus vulgaris L.; Natural selection.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572002000300016
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Performance of common bean families after different generations under natural selection Genet. Mol. Biol.
Silva,Nara Oliveira; Ramalho,Magno Antonio Patto; Abreu,Ângela de Fátima Barbosa; Carneiro,José Eustáquio de Souza.
A segregant bulk population derived from a single cross between the Carioca MG cultivar and the ESAL 686 line was used to investigate whether the action of natural selection in the direction required by the breeders and the delaying line extraction would increase the chance of obtaining families with greater grain yield. The populations were advanced from F2 to F24 and obtained families F2, F8 and F24 from the plants. These families and their parents were assessed for grain yield (kg/ha) in Lavras-MG in three sowing seasons (July 2001, November 2001 and March 2002) in an 18 x 18 lattice design with two replications in the first sowing and three in the other two. The largest mean yield, regardless of sowing season, was among the families derived from the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Phaseolus vulgaris; Common bean; Natural selection; Bulk breeding method.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572004000400018
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The origin of species by means of natural drift RChHN
MATURANA-ROMESIN,HUMBERTO; MPODOZIS,JORGE.
In this article we propose that the mechanism that gave rise to the diversity of living systems that we find today, as well as to the biosphere as coherent system of interrelated autonomous living systems, is natural drift. And we also propose that that which we biologists connote with the expression natural selection is a consequence of the history of the constitution of the biosphere through natural drift, and not the mechanism that generates that history. Moreover, we do this by proposing: a) that the history of living systems on earth is the history of the arising, conservation, and diversification of lineages through reproduction, and not of populations; b) that biological reproduction is a systemic process of conservation of a particular...
Tipo: Journal article Palavras-chave: Evolution; Natural drift; Natural selection; Lineage; Organism; Species.
Ano: 2000 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2000000200005
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The role of natural selection in human evolution – insights from Latin America Genet. Mol. Biol.
Salzano,Francisco M..
Abstract A brief introduction considering Darwin's work, the evolutionary synthesis, and the scientific biological field around the 1970s and subsequently, with the molecular revolution, was followed by selected examples of recent investigations dealing with the selection-drift controversy. The studies surveyed included the comparison between essential genes in humans and mice, selection in Africa and Europe, and the possible reasons why females in humans remain healthy and productive after menopause, in contrast with what happens in the great apes. At the end, selected examples of investigations performed in Latin America, related to the action of selection for muscle performance, acetylation of xenobiotics, high altitude and tropical forest adaptations...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Natural selection; Human evolution; Population genetics; Human adaptation; History of genetics.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572016000300302
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The threat from creationism to the rational teaching of biology Biol. Res.
CORNISH-BOWDEN,ATHEL; CÁRDENAS,MARÍA LUZ.
Most biologists outside the USA and a few other countries, like Australia and Canada, are under the impression that the threat to the teaching of biology represented by creationism does not concern them directly. This is unfortunately no longer true: the recent growth of creationism, especially in its pseudo-scientific manifestation known as "intelligent design", has been obvious in several countries of Western Europe, especially the UK, Germany and Poland, and it is beginning to be noticeable in Brazil, and maybe elsewhere in Latin America. The problem is complicated by the fact that there are not just two possibilities, evolution and creationism, because creationism comes in various incompatible varieties. Turkey is now a major source of creationist...
Tipo: Journal article Palavras-chave: Education; Creationism; Intelligent design; Fundamentalism; Evolution; Natural selection.
Ano: 2007 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602007000200002
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