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A note on the life-span of r-strategists OMA
Heip, C.H.R..
The idea is presented that the short life-span of <i>r</i>-strategists may in some cases be an adaptation to avoid predation. Evidence supporting this hypothesis is presented by examination of predation of the polyp <i>Protohydra leuckarti</i> on harpacticoid copepods.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Longevity.
Ano: 1974 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3494
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Age and growth of the white croaker Micropogonias furnieri (Perciformes: Sciaenidae) in a coastal area of Southeastern Brazilian Bight Neotropical Ichthyology
Santos,Rosa S.; Costa,Marcus R. da; Araújo,Francisco G..
ABSTRACT Studies on age and growth of fish populations have direct application in fisheries and contribute for policies of conservation. Our aim was update information on the Micropogonias furnieri growth parameters based on sagittae otoliths annulis readings, and we expected that the studied population from Southeast Brazil can reach more longevity than the reported in the available literature. We examined 286 individuals between August-2010 and July-2011 from Ubatuba Bay, SP. The Total Length ranged 200-480 mm. The determined growth parameters were: Males, L∞ =523.4mm, k = 0.05×year-1, t0 = -8.78 year; Females L∞ = 573.5mm, k = 0.06 × year-1, t0 = -7.49 year. The MI and % of edge type evidenced the formation of one ring per year during autumn/winter,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Coastal fishes; Growth parameters; Longevity; Marginal increment; Ubatuba.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252017000100223
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Behavior of coffee seeds to desiccation tolerance and storage. Repositório Alice
ABREU, L. A. de S.; VEIGA, A. D.; VON PINHO, E. V. de R.; MONTEIRO, F. F.; ROSA, S. D. V. F. da.
The technology developed by breeding programs is applied to coffee seeds; however, after processing and drying, they lose viability within a short period of time, thus making storage unsuitable. The objective of this research was to evaluate the quality of coffee seeds submitted to different drying methods and moisture contents during storage. The coffee seeds were submitted to conventional drying (slow shade drying) and fast drying in a static drier until they reached a moisture content of 40, 20, 1 2 and 5%. After this process, the seeds were stored in a cold chamber for 12 months, and seed quality was evaluated before and during storage by the germination test, electrophoretic patterns of heat resistant proteins, and the activity of isoenzyme systems....
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Desiccation tolerance; Estresse oxidativo; Tolerância à dessecação; Coffea arabica; Desitratação; Longevidade; Longevity; Coffea arabica; Oxidative stress.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1039780
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Biological aspects of Harmonia axyridis in comparison with Cycloneda sanguinea and Hippodamia convergens PAB
Santos,Laís da Conceição dos; Santos-Cividanes,Terezinha Monteiro dos; Cividanes,Francisco Jorge; Matos,Sidnéia Terezinha Soares de.
The objective of this work was to evaluate the development, survival, reproductive capacity, and longevity of the Asian ladybug Harmonia axyridis in comparison with Cycloneda sanguinea and Hippodamia convergens. Coccinellid larvae and adults were fed daily with Schizaphis graminum. Ten couples of each species were isolated for evaluation of the adult phase. The duration of the larval stage of H. axyridis is the longest (10.2 days) and its adults are the heaviest (29.7 mg) compared with C. sanguinea and H. convergens. The three species showed similar percentages of survival during the developmental stages. An average of 82% of C. sanguinea, H. axyridis, and H. convergens larvae reached adulthood, which indicates that temperature (25°C) and the offered prey...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biological control; Coccinellid; Development; Longevity; Ladybug; Predator.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2013001100001
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Biology of the wasp Polistes (Epicnemius) cinerascens Saussure (Hymenoptera: Vespidae) Anais da SEB
Giannotti,Edilberto.
Studies on nests of the social wasp Polistes (Epicnemius) cinerascens Saussure showed correlation between the size of the comb and thickness of the peduncle, besides of the height of the complete cells and the number of generations produced. The duration of the colony cycle (199.3 days), the number of cells built (102.9) and adults produced (94.2) allowed to establish the rates: 0.5 cells/day, 0.3 adults/day, and 0.8 adults/cell, the % of productive cells/ nest (55.2), and the number of the generations/colony (up to 4 generations). The number of instars was 5; the growing ratio 1.3; the duration of the immature stages was eggs = 13.0 days, larvae = 23.7, pupae = 22.2 and total duration = 58.6 days; and the longevity of adult wasps = 38.3 days.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Insecta; Colony cycle; Immature stages; Longevity; Life table.
Ano: 1997 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0301-80591997000100008
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Body size and extinction risk in Brazilian carnivores Biota Neotropica
Forero-Medina,German; Vieira,Marcus Vinícius; Grelle,Carlos Eduardo de Viveiros; Almeida,Paulo Jose.
Because extinctions are not random across taxa, it is important for conservation biologists to identify the traits that make some species more vulnerable. Factors associated with vulnerability include small geographical ranges, low densities, high trophic level, "slow" life histories, body size, and tolerance to altered habitats. In this study we examined the relationship of body size, reproductive output, longevity, and extinction risk for carnivores occurring in Brazil. We used generalized linear models analyses on phylogenetically independent contrasts to test the effect of body size alone, and the combined effect of body size, litter size and longevity on extinction risk. Body size appeared in the two best models according to the selection criteria...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Carnivores; Independent contrasts; Longevity; Reproductive output; South America; Vulnerability to extinction.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032009000200004
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Características pós-colheita de banana Prata Anã armazenada sob temperatura ambiente. Repositório Alice
SILVA, S. H. N. D. da; ROQUE, R. de L.; CERQUEIRA, T. S.; PEREIRA, M. E. C.; FERREIRA, C. F.; AMORIM, E. P..
O trabalho teve como objetivo avaliar as características pós-colheita dos frutos da cultivar Prata Anã. Os cachos fora m coletados na área experimental da Embrapa Mandioca e Fruticultura, durante o segundo ciclo de produção, de acordo com a coloração verde da casca e angulação das quinas dos frutos, visando quantificar a longevidade dos mesmos em condições controladas.
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Banana; Amido; Maturação; Longevidade; Starch; Longevity; Fruit maturity.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1011047
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Cellular aging: theories and technological influence BABT
Mercado-Sáenz,Silvia; Ruiz-Gómez,Miguel J.; Morales-Moreno,Francisco; Martínez-Morillo,Manuel.
The aim of this article was to review the factors that influence the aging, relationship of aging with the biological rhythms and new technologies as well as the main theories to explain the aging, and to analysis the causes of aging. The theories to explain the aging could be put into two groups: those based on a program that controlled the regression of the organism and those that postulated that the deterioration was due to mutations. It was concluded that aging was a multifactorial process. Genetic factors indicated the maximum longevity of the individual and environmental factors responsible for the real longevity of the individual. It would be necessary to guarantee from early age the conservation of a natural life rhythm.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aging; Longevity; Biological rhythms; Caloric restriction; Telomerase; Free radical.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000600008
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Chilled packing systems for fruit flies (Diptera: Tephritidae) in the sterile insect technique Neotropical Entomology
Hernández,Emilio; Escobar,Arseny; Bravo,Bigail; Montoya,Pablo.
We evaluated three packing systems (PARC boxes, "GT" screen towers and "MX" screen towers) for the emergence and sexual maturation of sterile fruit flies, at three adult fly densities (1, 1.2 and 1.3 fly/cm²) and three food types. At the lowest density, results showed no significant differences in the longevity and flight ability of adult Anastrepha ludens (Loew) and Anastrepha obliqua Macquart among the three packing systems. Higher densities resulted in a decrease in these parameters. In the evaluation of the three food types, no significant differences were found either on longevity or flight ability of A. ludens. However, the greatest longevity for both sexes A. obliqua was obtained with commercial powdered Mb® and the mix of sugar, protein and corn...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Longevity; Flight ability; Emergence tower; Anastrepha ludens; Anastrepha obliqua.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000400021
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Coat survey and Quarter reproductive age used in Vaquejada in Northeast micro-regions Sci. Agrar.Paran. / SAP
Bastos, Marisa Silva; Rezende, Marcos Paulo Gonçalves; Souza, Julio Cesar; Leite, Maybe Carneiro Paula; Figueiredo, Gabriel Chaves.
Aimed to evaluate the coat and Quarter reproductive age used in equine production used in Vaquejada in micro regions of the Northeast. They used information from 264 horses, taken from the database of the Association of Quarter Horse Breeders (ABQM). Were collected individual information: date of birth, sex and animal fur, number of copies of disputed official Vaquejada, better and worse placed, cumulative score in ABQM, coats and dates of parents' birth (31), coats and birth dates mothers (257). There was a higher frequency (P<0.05) of births between the months of September and October. There was no age-specific greater use of stallions or matrix playback (P>0.05). There was no correlation (P>0.05) between the number of children and the stallion...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Equus caballus; Equestrian sport; Phenotype; Longevity; Reproduction..
Ano: 2017 URL: http://e-revista.unioeste.br/index.php/scientiaagraria/article/view/13675
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Coffee seed physiology Braz. J. Plant Physiol.
Eira,Mirian T. S.; Silva,E. A. Amaral da; De Castro,Renato D.; Dussert,Stéphane; Walters,Christina; Bewley,J. Derek; Hilhorst,Henk W. M..
Considerable advances in our understanding of coffee seed physiology have been made in recent years. However, despite intense research efforts, there are many aspects that remain unclear. This paper gives an overview of the current understanding of the more important features concerning coffee seed physiology, and provides information on recent findings on seed development, germination, storage and longevity.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Coffea; Coffee; Germination; Germplasm; Longevity; Seed development; Storage.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202006000100011
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Conservação pós-colheita de frutos de amoreira-preta. Repositório Alice
ANTUNES, L.E.C.; DUARTE FILHO, J.; SOUZA, C.M. de.
O objetivo deste trabalho foi avaliar o comportamento de frutos de amoreira-preta (Rubus spp.) conservados em diferentes ambientes e períodos de armazenamento. O delineamento utilizado foi o de blocos casualizados com três repetições e 18 frutos por parcela, em esquema fatorial 2x2x5 (cultivares: Brazos e Comanche; ambientes: 2ºC e 20±2ºC; períodos de armazenamento: 0, 3, 6, 9 e 12 dias). As características avaliadas foram perda de massa, vitamina C total, sólidos solúveis totais, pH e acidez titulável total (porcentagem de ácido cítrico). Com o aumento do período de armazenamento houve perdas significativas de massa, principalmente nos frutos que permaneceram a 20ºC. Houve aumento do pH e redução do porcentual de acidez total titulável e sólidos solúveis...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Rubus; Armazenamento; Refrigeração; Longevidade; Storage; Refrigeration; Longevity.
Ano: 2003 URL: http://www.alice.cnptia.embrapa.br/handle/doc/108923
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Differences on allocation of available resources, in growth, reproduction, and survival, in an exotic gastropod of Physidae compared to an endemic one Iheringia, Sér. Zool.
Núñez,Verónica.
Physa acuta Draparnaud, 1805 is an invasive gastropod that can affect local species. In Argentina, it is widespread and abundant, even in environments inhabited by the native species Stenophysa marmorata Guilding, 1828. Its predominance raises the question whether this could be explained by a more successful energy allocation in functional requirements (growth, reproduction and survival) compared to S. marmorata. This study was aimed at comparing growth rates, as well as survival and fecundity, between both species under laboratory conditions. Individuals born on the same day were grouped in four per aquaria and kept under controlled conditions of food, light, and temperature. Snails were weekly measured (maximum shell length), and growth rates were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fecundity; Invasive species; Longevity; Physa acuta; Stenophysa marmorata.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212010000300014
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Efeito da atividade sexual, do sexo e da linhagem geográfica sobre a longevidade de Megaselia scalaris Loew (Diptera, Phoridae) Zoologia
Silva,Heriberto Dias da.
Longevity is an important characteristic of life history of species which is influenced by environment, genetic constituition and sexual activity. Three sexual activity regimes were investigated in three geographical lineages in Megaselia scalaris Loew, 1866 that have been maintened in the laboratory at 25ºC. It was observed that virgin flies are more longevous than others, females more than males, and a sex-lineage interaction underlying this pattern variation. It was observed an inverse relation between the environmental temperature of the lineages's locality and longevity.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Megaselia scalaris; Life-history; Longevity; Geographical lineages; Sexual activity.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752000000400001
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Efeito de período de armazenamento e tipo de embalagem sobre a conservação de sementes de malva. Infoteca-e
CARVALHO, J. E. U. de; FIGUEIREDO, F. J. C.; SILVA, J. F. da..
1983
Tipo: Séries anteriores (INFOTECA-E) Palavras-chave: Semente de malva; Qualidade; Teor de umidade; Vigor; Armazenamento; Conservação; Embalagem; Quality; Seed; Longevity; Conservation; Seed storage; Moisture content; Packaging.
Ano: 1983 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/383165
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Efeito do armazenamento na qualidade fisiológica das sementes de populações de milho cultivadas sob estresses hídrico e mineral. Repositório Alice
GUARCONI, R.C.; DURAES, F. O. M.; MAGALHAES, P. C.; SILVA, R.F. da..
O objetivo deste trabalho foi avaliar o efeito do armazenamento na qualidade fisiologica de sementes de cinco populacoes de milho submetidas aos estresses de Al no solo e de seca no florescimento. Cinco populacoes de milho (CMS06, CMS35, CMS36, CMS54 e Milho Metro) foram cultivadas em solos com dois niveis de fertilidade: o primeiro, apresentando alta saturacao de bases (V = 67%), e o segundo, alta saturacao de Al (m = 54%). As populacoes de milho foram tambem submetidas a irrigacao plena e a supressao de irrigacao durante o florescimento. As sementes obtidas dessas populacoes foram armazenadas no laboratorio de sementes sob condicoes ambientais. A qualidade fisiologicas das sementes foi determinada no inicio e aos 30, 90 e 210 dias de armazenamento. As...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Milho; Estresse hidrico; Semente; Armazenamento; Aluminio; Solo; Seca; Germinacao; Longevidade; Zea mays; Maize; Seed; Aluminum; Soil; Drought; Germination; Longevity.
Ano: 2001 URL: http://www.alice.cnptia.embrapa.br/handle/doc/485187
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Efeito do intervalo de alimentação na reprodução e na longevidade do predador Podisus nigrispinus (Dallas) (Heteroptera: Pentatomidae). Repositório Alice
MOLINA-RUGAMA, A.J.; ZANUNCIO, J.C.; PRATISSOLI, D.; CRUZ, I..
O efeito do intervalo de alimentacao em femeas de Podisus nigrispinus (Dallas) (Heteroptera: Pentatomidae), foi estudado a 24 +\\- 3oC, UR de 70 +\\- 10% e fotofase de 12 horas. Os tratamentos consistiram no fornecimento de larvas de Musca domestica L. (Diptera: Muscidae), durante 24 horas a cada um, dois, quatro, oito ou 16 dias. Femeas de P. nigrispinus, alimentadas a cada um, dois e quatro dias, produziram maior numero de ovos (225,4; 184,6 e 135,3 ovos, respectivamente), que aquelas alimentadas a cada oito ou 16 dias (8,3 e 0,0 ovos, respectivamente). A longevidade das femeas que receberam presa a cada quatro dias (43,0 dias), foi maior do que aquelas alimentadas a cada oito ou 16 dias (27,3 e 10,6 dias).
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Insecta; Longevidade; Percevejo; Predador; Podisus nigrispinus; Asopinae; Stinkbug; Longevity.
Ano: 1998 URL: http://www.alice.cnptia.embrapa.br/handle/doc/481818
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Effect of storage of achenes of Bidens gardneri Baker on light sensitivity during germination Rev. Bras. Bot.
SASSAKI,REGINA M.; ZAIDAN,LILIAN B.P.; FELIPPE,G.M..
Bidens gardneri is a very common herbaceous species in the cerrados of the state of São Paulo, whose seeds become light sensitive at 25°C only. Achenes of this species were stored in refrigerator at 4°C and in cerrado soil and in forest soil. The field experiments were carried out in the cerrado at the Reserva Biológica e Estação Experimental de Moji Guaçu, in Moji Guaçu and in the forest of the Instituto de Botânica, in São Paulo, Brazil. Achenes of B. gardneri vary in size and achenes from 7 to 12 mm long were used. Achenes stored for up to 6 months at 4°C showed light sensitivity; after 9 months storage, the difference in germination between light and darkness had disappeared for the smallest and the largest achenes used. Seeds of B. gardneri germinated...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bidens gardneri; Longevity; Light sensitivity.
Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84041999000100010
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Effect of Trichopoda Pennipes parasitization on Nezara Viridula. Repositório Alice
SALLES, L.A.B. de.
Trichopoda pennipes parasitization had a strong negative effect on Nezara viridula adult longevity, fecundity and feeding. A parasitized female lived half the time of an unparasitized one and for a parasitized male this reduction in longevity was even greater. Unparasitized females laid four times more eggs than parasitized one. Parasitization had no significant effect on egg fertility. Feeding intensity by N. viridula is reflected by the number of punctured soybean seeds. Caged plants exposed to unparasitized adults produced only one half as many unpunctured seeds compared to cages with parasitized adults. The percentage of normal seeds (with commercial value) was 31.1% higher in cages with parasitized adults.
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Feeding behaviour; Longevity; Fecundity; Parasitism.
Ano: 1992 URL: http://www.alice.cnptia.embrapa.br/handle/doc/105650
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Effects of caffeine and used coffee grounds on biological features of Aedes aegypti (Diptera, Culicidae) and their possible use in alternative control Genet. Mol. Biol.
Laranja,Alessandra Theodoro; Manzatto,Antonio José; Campos Bicudo,Hermione Elly Melara de.
Caffeine and used coffee grounds completely blocked the development of Aedes aegypti in the early stages, in treatments with the concentrations 1.0 mg/mL and 50 mg/mL, respectively. More advanced stages and even adults were obtained in lower concentrations of both substances, enabling observations to be made of mortality rate, longevity and esterase patterns. The experiments involved treatments using either eggs or 3rd instar larvae (L3), with or without the addition of fish food. Mortality rates prior to the adult stage and adult longevity were significantly different in the comparisons among treatments, in every kind of experiment, but in those using L3 larvae, their percentages were smaller. Observations of the time of larva and adult onset suggested...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aedes aegypti; Caffeine; Used coffee grounds; Mortality; Longevity; Esterases; Alternative control.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572003000400004
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