Mean Life Span
Mostrando 1-12 de 41 artigos, teses e dissertações.
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1. Fertility Life Table, Population Parameters and Biotic Potential of Helicoverpa gelotopoeon (Dyar) (Lepidoptera: Noctuidae)
Abstract Helicoverpa gelotopoeon is an endemic pest of South America that affects soybean and other important crops. Life tables are a fundamental tool used to study insect populations, resulting in crucial information for integrated pest management programs. Therefore, the aim of this study was to evaluate the biotic potential and the construction of a life
An. Acad. Bras. Ciênc.. Publicado em: 25/10/2018
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2. Bioecologia e competição de duas espécies de parasitoides neotropicais (Hymenoptera: Braconidae e Eulophidae) de Liriomyza sativae Blanchard, 1938 (Diptera: Agromyzidae) / Bioecology and competition of two neotropical parasitoid species (Hymenoptera: Braconidae and Eulophidae) of Liriomyza sativae Blanchard, 1938 (Diptera: Agromyzidae)
We studied the biology of two species of parasitoids associated with Liriomyza sativae Blanchard, 1938 in the state of Rio Grande do Norte (RN), Brazil: the koinobiont larval-pupal parasitoid Opius (Gastrosema) scabriventris (Hymenoptera: Braconidae) and the larval idiobiont parasitoid Chrysocharis vonones (Hymenoptera: Eulophidae). The following parameters
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/10/2011
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3. Life cycle of Triatoma ryckmani (Hemiptera: Reduviidae) in the laboratory, feeding patterns in nature and experimental infection with Trypanosoma cruzi
A cohort initiated with 121 eggs, yielding 105 first instar nymphs (eclosion rate: 86.78%), allowed us to observe the entire life cycle of Triatoma ryckmani under laboratory conditions (24ºC and 62% relative humidity), by feeding them on anesthetized hamsters. It was possible to obtain 62 adults and the cycle from egg to adult took a mean of 359.69 days wit
Memórias do Instituto Oswaldo Cruz. Publicado em: 2010-02
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4. The polymorphism of the serotonin-2A receptor T102C is associated with age
Epidemiological investigations suggest that T102C polymorphism of gene 5-HT2A may be associated with mean life span because diseases and behaviors related to this polymorphism, such as schizophrenia, suicide, aggression, and addiction, may potentially shorten mean life span. A sample of 687 individuals without previous neuropsychiatric disease was genotyped
Brazilian Journal of Medical and Biological Research. Publicado em: 31/10/2008
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5. Possível influencia do polimorfismo T102C do gene 5HT²A no tempo de vida médio dos seres humanos
Doenças e comportamentos de risco relacionados ao polimorfismo T102C do gene 5- HT2A, como esquizofrenia, suicídio, impulsividade, alcoolismo, tabagismo, entre outros, podem encurtar o tempo de vida médio. Uma amostra de 687 indivíduos residentes na região metropolitana da Grande Porto Alegre foi genotipada e categorizada de acordo com suas respectivas
Publicado em: 2008
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6. Biology of three species of the Meccus phyllosomus complex (Hemiptera: Reduviidae: Triatominae) fed on blood of hens and rabbits
Aspects related to hatching, life time, number of blood meals to molt, mortality, feeding time and postfeed defecation delay for each instar of Meccus phyllosomus, M. mazzottii, and M. bassolsae, life-cycle were evaluated and compared in two cohorts of each of those three species, fed on hens or rabbits. No significant (p > 0.05) differences were recorded am
Memórias do Instituto Oswaldo Cruz. Publicado em: 2006-11
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7. Autoecologia de Bauhinia holophylla Steud. (Leguminosae-Caesalpiniolideae), na Reserva Biologica e Estação Experimental de Moji Guaçu, SP
A population of Bauhinia holophylla located at a cerrado area in the Reserva Biológica e Estação Experimental de Moji Guaçu was studied in relation to reproductive phenology, leaf life span, seed predation, seed germination and aspects of plant regeneration. The distribution pattern of the juvenile and adult population is considered agregated. This popul
Publicado em: 2006
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8. Feeding, defecation, and development times of Meccus longipennis Usinger, 1939 (Hemiptera: Reduviidae: Triatominae) under laboratory conditions
Aspects related to hatching, time-lapse between presenting the blood-meal and beginning of feeding, feeding time, postfeed defecation delay, mortality, and fecundity for each stage of Meccus longipennis life-cycle were evaluated. The bugs were maintained in a dark incubator at 27 ± 1ºC and 80 ± 5% rh, were fed weekly and checked daily for ecdysis or death
Memórias do Instituto Oswaldo Cruz. Publicado em: 2003-10
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9. Influence of the blood meal source on the biology of Meccus picturatus Usinger 1939 (Hemiptera: Reduviidae: Triatominae) under laboratory conditions
Aspects related to hatching, time-lapse between presenting the blood meal and beginning of feeding, feeding time, postfeed defecation delay,life time, mortality and fecundity for each stage of Meccus picturatus, life-cycle were evaluated and compared in two cohorts of M. picturatus fed on hens or rabbits. The hatching rate observed for each of the two studie
Memórias do Instituto Oswaldo Cruz. Publicado em: 2003-03
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10. Biology of Triatoma klugi Carcavallo, Jurberg, Lent & Galvão 2001 (Heteroptera: Reduviidae) under Laboratory Conditions: Effects of Distinct Blood Sources and Susceptibility to Trypanosoma cruzi and Trypanosoma rangeli
The life cycle of Triatoma klugi Carcavallo, Jurberg, Lent & Galvão 2001 was compared under laboratory conditions using two groups of the F1 generation obtained from field-collected bugs. Among the 100 nymphs weekly fed on mice (Group A) or chicken (Group B), 77% of Group A and 67% of Group B reached the adult stage, and the mean time from the first nymphal
Memórias do Instituto Oswaldo Cruz. Publicado em: 2002-06
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11. Biology of Triatoma flavida Neiva, 1911 (Hemiptera: Reduviidae) under laboratory conditions
The complete life cycle of Triatoma flavida, weekly fed on hens, was studied at 28±2°C and 80±10% RH. Aspects related to hatching, life span, mortality and feeding behavior for each stage of its life cycle were evaluated. The hatching rate observed for 100 eggs was 93% with an average incubation period of 27.2 days. Sixty-two nymphs completed the cycle an
Memórias do Instituto Oswaldo Cruz. Publicado em: 2001-08
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12. Genetic (Co)Variation for Life Span in Rhabditid Nematodes: Role of Mutation, Selection, and History
The evolutionary mechanisms maintaining genetic variation in life span, particularly post-reproductive life span, are poorly understood. We characterized the effects of spontaneous mutations on life span in the rhabditid nematodes Caenorhabditis elegans and C. briggsae and standing genetic variance for life span and correlation of life span with fitness in C
Oxford University Press.