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Age, condition and dominance-related sexual ornament size before and during the breeding season in the black grouse Lyrurus tetrix ArchiMer
Harris, Sarah; Kervinen, Matti; Lebigre, Christophe; Pike, Thomas W.; Soulsbury, Carl D..
Male ornaments function as honest cues of male quality in many species and are subject to intra‐ and intersexual selection. These ornaments are generally studied during peak expression, however their size outside the breeding season may determine ultimate ornament size and costliness, and as such reproductive success. We investigated whether male black grouse Lyrurus tetrix eye comb size was related to age, condition and measures of male dominance before and during the breeding season. Total combined eye comb size began to increase ~70 days before the start of the breeding season. Adult males (aged ≥ 2 years old) had consistently larger eye combs than younger males (1 year old) both before and during the breeding season. Heavier and more dominant adult...
Tipo: Text Palavras-chave: Age; Ornament expression; Dominance.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00440/55121/56577.pdf
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Composition and trophic structure of the ichthyofauna from a stream downriver from Santo Antonio Falls in the Madeira River, Porto Velho, RO Biota Neotropica
Araújo,Túlio Raimundo de; Ribeiro,Ariana Cella; Doria,Carolina Rodrigues da Costa; Torrente-Vilara,Gislene.
Belmont Stream is the main tributary of the Madeira River in the area immediately downriver from the Santo Antonio Fall. Samplings were carried out using gill nets in the mouth of this stream between May 2005 and April 2006 and resulted in a list of 74 species. The analyses included values of composition, constancy of occurrence, species richness, abundance, Catch Per Unit of Effort and trophic structure about the ten most abundant species. Characiformes and Siluriformes were dominant order in the samples and Curimatidae (popularly known as "branquinhas") was the most abundant family, represented by Psectrogaster rutiloides (32.57% of the collected specimens), Potamorhina altamazonica (10.72%), and Potamorhina latior (7.79%). The most of species were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Richness; Dominance; CPUE; Migratory route; Amazon.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032009000300001
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Contested dominance modifies the anovulatory consequences of social subordination in female marmosets BJMBR
Alencar,A.I.; Sousa,M.B.C.; Abbott,D.H.; Yamamoto,M.E..
Dominance status among female marmosets is reflected in agonistic behavior and ovarian function. Socially dominant females receive submissive behavior from subordinates, while exhibiting normal ovulatory function. Subordinate females, however, receive agonistic behavior from dominants, while exhibiting reduced or absent ovulatory function. Such disparity in female fertility is not absolute, and groups with two breeding females have been described. The data reported here were obtained from 8 female-female pairs of captive female marmosets, each housed with a single unrelated male. Pairs were classified into two groups: "uncontested" dominance (UD) and "contested" dominance (CD), with 4 pairs each. Dominant females in UD pairs showed significantly higher...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Callitrichids; Dominance; Progesterone levels; Agonistic behavior; Marmosets.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2006000500012
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Diallel analysis for grain yield and mineral absorption rate of soybeans grown in acid brazilian savannah soil PAB
Spehar,Carlos Roberto.
High available aluminium and low levels of calcium below the ploughed zone of the soil are limiting factors for agricultural sustainability in the Brazilian Cerrados (Savannahs). The mineral stresses compound with dry spells effect by preventing deep root growth of cultivated plants and causes yield instability. The mode of inheritance for grain yield and mineral absorption ratio of a diallel cross in soybeans [Glycine max (L.) Merrill] grown in high and low Al areas was identified. Differences among the genotypes for grain yield were more evident in the high Al, by grouping tolerant and non-tolerant genotypes for their respective arrays in the hybrids. A large proportion of genetic variance was additive for grain yield and mineral absorption ratio in both...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aluminium; Calcium; Cultivar; Additive; Dominance; Breeding.
Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X1999000600011
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Diallel analysis for grain yield and mineral absorption rate os soybeans grown in acid brazilian Savannah soil. Repositório Alice
SPEHAR, C.R..
High available aluminium and low levels of calcium below the ploughed zone of the soil are limiting factors for agricultural sustainability in the Brazilian Cerrados (Savannahs). The mineral stresses compound with dry spells effect by preventing deep root growth of cultivated plants and causes yield instability. The mode of inheritance for grain yield and mineral absorption ratio of a diallel cross in soybeans (Glycine max (L.) Merrill) grown in high and low Al areas was identified. Differences among the genotypes for grain yield were more evident in the high Al, by grouping tolerant and non-tolerant genotypes for their respective arrays in the hybrids. A large proportion of genetic variance was additive for grain yield and mineral absorption ratio in both...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Aluminium; Calcium; Cultivar; Additive; Dominance; Breeding; Aluminio; Calcio; Variedade; Aditivo; Dominancia; Melhoramento genetico.
Ano: 1999 URL: http://www.alice.cnptia.embrapa.br/handle/doc/88901
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Distribuição espacial e temporal das larvas de Chironomidae em diferentes ambientes do complexo - rio Baía, Estado do Mato Grosso do Sul, Brasil - doi: 10.4025/actascibiolsci.v33i4.5386 Biological Sciences
Anjos, Adriana Felix dos; UEM; Takeda, Alice Michiyo; UEM; Pinha, Gisele Daiane; UEM.
A planície de inundação do alto rio Paraná caracteriza-se pela grande diversidade de organismos aquáticos e as larvas de Chironomidae destacam-se por sua elevada abundância. A partir da hipótese de que as variáveis abióticas influenciam a composição, densidade e dominância das larvas de Chironomidae em diferentes ambientes e períodos amostrados, este trabalho objetivou: caracterizar o rio Baía, canal secundário, lagoa não-conectada (Fechada) e lagoa conectada (Guaraná) da planície de inundação do alto rio Paraná, de acordo com os atributos da assembléia de Chironomidae e identificar possíveis gradientes de distribuição espacial e temporal das larvas, relacionando-as com algumas variáveis abióticas. As coletas foram realizadas no período de março de 2003 a...
Palavras-chave: Insetos aquáticos; Dominância; Composição granulométrica; Planície de inundação; Rio Paraná 2.05.00.00-9 aquatic insects; Dominance; Granulometric composition; Floodplain; Paraná river.
Ano: 2011 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/5386
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Effect of the establishment of dominance relationships on cortisol and other metabolic parameters in Nile tilapia (Oreochromis niloticus) BJMBR
Corrêa,S.A.; Fernandes,M.O.; Iseki,K.K.; Negrão,J.A..
The objective of the present study was to investigate the influence of the establishment of dominance relationships and social stress on plasma cortisol and metabolite levels in Nile tilapia (Oreochromis niloticus). During the 30-day experiment, the fish weighing 236 ± 29 g were kept in individual aquaria, except for two pairings lasting 6 h each. Blood samples were taken from the animals before and after pairing. Display, approach, attack, rebuff, chase flight, and coloration were carried out on days 16 and 30. Activities and behaviors characteristic of the establishment of dominance relationships were described. It was possible to classify all experimental fish (N = 30) as dominant or subordinate. No differences were detected between dominant (N = 15)...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Tilapia; Social stress; Social relationships; Agonistic behaviors; Cortisol; Dominance.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003001200015
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Estimating additive and dominance variances for complex traits in pigs combining genomic and pedigree information. Repositório Alice
COSTA, E. V.; DINIZ, D. B.; VERONEZE, R.; RESENDE, M. D. V. de; AZEVEDO, C. F.; GUIMARÃES, S. E. F.; SILVA, F. F.; LOPES, P. S..
Knowledge of dominance effects should improve genetic evaluations, provide the accurate selection of purebred animals, and enable better breeding strategies, including the exploitation of heterosis in crossbreeds. In this study, we combined genomic and pedigree data to study the relative importance of additive and dominance genetic variation in growth and carcass traits in an F2 pig population. Two GBLUP models were used, a model without a polygenic effect (ADM) and a model with a polygenic effect (ADMP). Additive effects played a greater role in the control of growth and carcass traits than did dominance effects. However, dominance effects were important for all traits, particularly in backfat thickness. The narrow-sense and broad-sense heritability...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Melhoramento genético; Seleção genômica ampla; Métodos de seleção; Herdabilidade; Dominance; Genetic parameters; Polygenic effect; Piau pigs.
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1021860
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Estrutura da comunidade das larvas de Chironomidae (Insecta: Diptera), em diferentes substratos artificiais e fases hídricas, no trecho superior do rio Paraná, Estado do Paraná, Brasil - doi: 10.4025/actascibiolsci.v32i2.5387 Biological Sciences
Anjos, Adriana Felix dos; UEM; Takeda, Alice Michiyo; UEM.
Este estudo teve como objetivo verificar a influência das fases hídricas sobre a composição, a densidade e a dominância das larvas de Chironomidae em diferentes tipos de substratos artificiais. As coletas foram realizadas quinzenalmente, entre os meses de agosto de 2004 e dezembro de 2005. A análise de agrupamento revelou diferenças na composição e densidade das morfoespécies entre as fases hídricas e, de acordo com o índice de dominância de Kownacki, Cricotopus sp. foi dominante ou subdominante em todos os substratos e fases hídricas. Na fase de águas baixas, a maior similaridade foi observada entre os substratos de mesma forma. Nesse período, os maiores valores de riqueza e densidade das larvas foram registrados nos substratos em forma de X. Na fase de...
Palavras-chave: Rio Paraná; Similaridade; Dominância; Colonização; Fases hídricas 2.05.00.00-9 Paraná river; Similarity; Dominance; Colonization; Hydrological phases.
Ano: 2010 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/5387
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Feeding behavior by hummingbirds (Aves: Trochilidae) in artificial food patches in an Atlantic Forest remnant in southeastern Brazil Rev. Bras. Zool.
Lanna,Lucas L.; Azevedo,Cristiano S. de; Claudino,Ricardo M.; Oliveira,Reisla; Antonini,Yasmine.
ABSTRACT During flight, hummingbirds achieve the maximum aerobic metabolism rates within vertebrates. To meet such demands, these birds have to take in as much energy as possible, using strategies such as selecting the best food resources and adopting behaviors that allow the greatest energy gains. We tested whether hummingbirds choose sources that have higher sugar concentrations, and investigated their behaviors near and at food resources. The study was conducted at Atlantic forest remnant in Brazil, between June and December 2012. Four patches were provided with artificial feeders, containing sucrose solutions at concentrations of 5%, 15%, 25% and 35% weight/volume. Hummingbird behaviors were recorded using the ad libitum method with continuous...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Behavioral strategies; Dominance; Food resources; Subordination; Trapline.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702017000100305
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Floristic composition, structure and soil-vegetation relations in three white-sand soil patches in central Amazonia Acta Amazonica
DEMARCHI,Layon Oreste; SCUDELLER,Veridiana Vizoni; MOURA,Livia Carvalho; DIAS-TERCEIRO,Randolpho Gonçalves; LOPES,Aline; WITTMANN,Florian Karl; PIEDADE,Maria Teresa Fernandez.
ABSTRACT The Amazonian white-sand vegetation presents a set of unique features, such as the dominance of a few species, high endemism and low species richness, which differentiate it from other Amazonian forests. Soil parameters have long been recognized as the main drivers of white-sand vegetation (WSV) characteristics. However, how they influence the composition, richness and structure of this vegetation type is still poorly understood. In this study we investigated the variation in floristic composition between patches and the soil-vegetation relations in three central Amazonian WSV patches. We tested whether slight differences in soil properties are linked with differences in floristic composition, species richness and forest structure in adjacent...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Species richness; Oligotrophic ecosystems; Dominance; Sum of bases.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672018000100046
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Generation mean analysis of root growth under aluminium-stress hydroponics in the soybeans (Glycine max (L.) Merrill). Repositório Alice
SPEHAR, C.R.; GALWEY, N.W..
There are vast areas in the tropics which are limited in their use by mineral stresses such as aluminium and low available nutrients. The grain crops shall be further adapted if breeding programmes include identification and use of the genetic factors to these hindrances. Three soybean families originated from crosses, selfing and backcrosses among the varieties IAC-2, IAC-7, IAC-9 and Biloxi were used in scaling tests to identify their genetic differences to aluminium tolerance by evaluating root growth in Al-stress hydroponics. The results indicate that this is a polygene trait with predominantly additive effects. However, the espistalic effect is also present and should de take into account in a breeding programme. Recurrent selection feasible because...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Genetics; Breeding; Variety; Additive; Dominance; Interaction; Genetic model; Melhoramento genetico; Variedade; Aditividade; Dominancia; Interacao; Modelo genetico.
Ano: 1995 URL: http://www.alice.cnptia.embrapa.br/handle/doc/104256
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Genetic evaluation models for post-weaning weight gain in a multibreed Angus-Nelore population PAB
Prestes,Alan Miranda; Oliveira,Mauricio Morgado de; Mello,Fernanda Cristina Breda; Rorato,Paulo Roberto Nogara; Lopes,Jader Silva; Feltes,Giovani Luis; Bravo,André Padilha.
Abstract: The objective of this work was to identify the most suitable model for the genetic evaluation of post-weaning weight gain in a multibreed Angus-Nelore population. Three models were tested using the Bayesian inference method: traditional animal model (M1), multibreed animal model without (M2) and with segregation (M3). The choice of the best model followed the criteria: number of parameters (Np), deviance information criterion (DIC), conditional predictive ordinate (CPO), and deviance based on Bayes factors. Spearman’s rank correlations were estimated for the top 10, 20, and 30% sires. M1 presented the highest values for all criteria, except for Np, and the lowest direct heritability estimate of 0.15±0.01. The heritability estimates for M2 and M3...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Animal breeding; Crossbreeding; Dominance; Epistatic losses; Genetic parameters.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000102803
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Herança da resistência de sorgo ao pulgão-verde, Schizaphis graminum (Rondani, 1852). Repositório Alice
CRUZ, I.; VENDRAMIM, J.D..
1988
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Sorgo; Pulgao verde; Resistencia; Planta; Genetica; Heranca; Sorghum bicolor; Schizaphis graminum; Greenbug; Genetic; Dominance; Insecta; Resistance; Plant.
Ano: 1988 URL: http://www.alice.cnptia.embrapa.br/handle/doc/478584
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Herança da resistência de sorgo ao pulgão-verde Schizaphis graminum (Rondon.) (Homoptera: Aphididae). Repositório Alice
CRUZ, I.; VENDARAMIM, J.D..
Estudou-se a heranca da resistencia ao pulgao-verde do sorgo, Schizaphis graminum (Rond.) em populacoes derivadas do cruzamento envolvendo genotipos resistentes GR e GB 3. A partir deles, foram obtidas geracoes F1, F2 e retrocruzamentos, tanto com linhagens suscetiveis quanto com resistentes. Esses materiais foram semeados em caixa (36 x 80 x 10 cm). Em cada caixa, apos casualizacao, foram deixadas 20 plantulas, com execao da geracao segregante F2, para qual o numero foi 100. As avaliacoes foram baseadas numa escala visual de dano variando de zero (sem dano) a nove (acima de 80% de necrose nas folhas). Nas geracoes segregantes foram consideradas como plantas resistentes aquelas com notas de dano variando de zero a quatro. Para testar as hipoteses de...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Sorgo; Pulgao verde; Resistencia; Planta; Genetica; Heranca; Sorghum bicolor; Schizaphis graminum; Greenbug; Genetic; Dominance; Insecta; Resistance; Plant.
Ano: 1995 URL: http://www.alice.cnptia.embrapa.br/handle/doc/477182
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Ichthyofauna of the Mamanguape river basin, Northeastern, Brazil Biota Neotropica
Oliveira-Silva,Leonardo; Ramos,Telton Pedro Anselmo; Carvalho-Rocha,Yuri Gomes Ponce; Viana,Katherine Morais Porto; Avellar,Raizze da Costa; Ramos,Robson Tamar da Costa.
Abstract: The Mamanguape River Basin is located in a peripheral semi-arid area of South America, with its headwaters and middle reaches running through the Caatinga (from wetter to drier) and its lower reaches through the Atlantic Forest. The objective of this study was to inventory the fish fauna of the Mamanguape river basin through a comprehensive sampling and to discuss its ichthyofaunal dominance pattern. Sampling was conducted between 2015 and 2016 at 38 points throughout. The main river course was sampled at 18 fixed points during two expeditions (dry and wet seasons) using traw nets, cast nets, and dip nets, with a standardized effort. The tributaries were sampled during the dry season at 20 points using an adaptaptation of the AquaRAP methodology....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Neotropical Region; Brazilian Semiarid; Freshwater Fish; Species List; Dominance; Endemism.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032018000300204
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Identification of arbuscular mycorrhizal fungi in plantain producing municipalities in department of Cordoba, Colombia Acta Agron. (Palmira)
Cabrales-Herrera,Eliecer Miguel; Barrera-Violeth,José Luis; Novoa-Yanez,Rafael.
Abstract Currently plantain cultivation makes excessive use of agrochemicals, condition that threatens a sustainable production system and leads to the degradation of the environment, reducing the quality of the products. Based on the foregoing, and in order to expand knowledge of the arbuscular mycorrhizal fungi associated with plantain cultivation, the aim of this study was to isolate and identify fungal morphotypes that form symbiosis with plantain (Musa AAB Simmonds cv. Hartón), in farms from seven municipalities of the department of Córdoba, Colombia. In each farm, soil samples from the first 20 cm of soil depth in the rhizosphere area were taken to the soil laboratory at Universidad de Córdoba, Colombia, where spores were extracted using the OHM and...
Tipo: Journal article Palavras-chave: Endomycorrhizae; Musa AAB; Diversity; Dominance; Glomus; Morphotype.
Ano: 2018 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122018000100017
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Inheritance of type I glandular trichomes in Cucumis melo National Institute of Agronomic Research
Palomares-Rius, F.J.; Sarria, E.; Alba, J.M.; Gómez-Guillamón, M.L..
A high density of glandular trichomes of Type I could contribute to enhance resistance to Aphis gossypii in melon breeding programs with the Vat gene. To study the inheritance of this trait, a six-generation genetic family was obtained from the cross between the accession TGR-1551, with high density of glandular trichomes and the Spanish cultivar ‘Bola de oro’ with low trichome density. The genetic model estimated showed that the Type I trichome density followed an oligogenic inheritance with important additive effect and strong epistatic effect between heterozygous loci. The values for broad sense heritability (H2) and narrow sense heritability (h2) were 0.86 and 0.50, respectively, which made this character suitable for breeding.
Tipo: Poster Palavras-chave: Aphis gossypii; Antixenosis; Heritability; Genetic model; Additive; Dominance; Epistasis.
Ano: 2008 URL: http://hdl.handle.net/2174/250
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Linking Keystone Species and Functional Groups: A New Operational Definition of the Keystone Species Concept Ecology and Society
Davic, Robert D; Ohio Environmental Protection Agency; r_davic@yahoo.com.
The concept of the "keystone species" is redefined to allow for the a priori prediction of these species within ecosystems. A keystone species is held to be a strongly interacting species whose top-down effect on species diversity and competition is large relative to its biomass dominance within a functional group. This operational definition links the community importance of keystone species to a specific ecosystem process, e.g., the regulation of species diversity, within functional groups at lower trophic levels that are structured by competition for a limited resource. The a priori prediction of keystone species has applied value for the conservation of natural areas.
Tipo: Peer-Reviewed Reports Palavras-chave: Keystone species; Competition; Dominance; Feeding guilds; Functional groups; Power laws; Species diversity; Biomass dominance.
Ano: 2003
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Modelo linear misto para avaliacao genetica de clones pela metodologia DFREML e AM-Blup. Repositório Alice
RESENDE, M. D. V. de..
No presente trabalho foram apresentados estimadores e preditores para estimacao de componentes de varianci9a e predicao de valores genotipicos a partir de testes clonais. Foram considerados dois modelos, associados a avaliacao de clones aparentados e nao aparentados. A esta classe de modelos denominou-se modelos de clones repetidos (RCM).
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: BLUP; REML; Dominancia; Valor genotipico; Dominance; Genetypic values; Selection; Seleção.
Ano: 1997 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/300419
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