Mostrando 361 - 380 Resultados de 3,908 Para Buscar '"Queen"', tiempo de consulta: 0.22s Limitar resultados
  1. 361
  2. 362
    “…Here we provide a lab/field comparison to investigate the identity of an egg-marking signal of ant queens. Our study was based on ant workers resolving conflict over male production by destroying each other's eggs, but leaving queen eggs unharmed. …”
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  3. 363
    “…In order to determine the prevalence of stillbirths (SB), early hospital neonatal death (EHND) and associated factors in Blantyre, Malawi, a prospective study of pregnant and post-natal women was conducted at the Queen Elizabeth Central Hospital (QECH), Malawi. …”
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  4. 364
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  6. 366
    “…Our refined estimates of the age and life expectancy of human hotspots provide empirical evidence in support of the Red Queen hypothesis of recombination hotspots evolution.…”
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  7. 367
    “…We conclude that there is high potential for Red Queen dynamics in this host–parasite system.…”
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  8. 368
    “…However, it often results in intercastes between queens and workers, which are normally are not seen in hive-reared bees, except when larvae older than three days are grafted for queen rearing. …”
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  9. 369
    por Chou, Jui-Yu, Leu, Jun-Yi
    Publicado 2015
    “…Arms races between such selfish mtDNA and host nuclear genomes can accelerate cyto-nuclear co-evolution and lead to a phenomenon called the Red Queen Effect. Here, we discuss how the Red Queen Effect may contribute to the frequent observation of cyto-nuclear incompatibility and be the underlying driving force of some human mitochondrial diseases.…”
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  10. 370
    “…The effects of sublethal pesticide exposure on queen emergence and virus titers were examined. Queen rearing colonies were fed pollen with chlorpyrifos (CPF) alone (pollen-1) and with CPF and the fungicide Pristine(®) (pollen-2). …”
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  11. 371
    “…In polygynous ant species, potential rival queens in colonies with multiple queens are often executed by other queens, workers, or both. …”
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  12. 372
    por Ejsmond, Maciej Jan, Radwan, Jacek
    Publicado 2015
    “…We found that novel mutations at ABSs are strongly favored by the Red Queen process, but not by heterozygote advantage, regardless of the pathogen mutation rate. …”
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  13. 373
    por Wang, Lei, Zeng, Ling, Chen, Jian
    Publicado 2015
    “…Imidacloprid at both concentrations did not cause any increase in queen mortality during the founding stage; however, it significantly reduced queens’ brood tending ability. …”
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  14. 374
    “…Through most of this species’ range, colonies are founded by single queens, but in some populations nests are instead founded by cooperative groups of unrelated queens. …”
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  15. 375
  16. 376
    “…Here we use RNAseq to compare patterns of expression of genes involved in DNA and protein repair of age-matched queens and workers. There was no difference between queens and workers in 1-day-old individuals, but the level of expression of these genes increased with age and this up-regulation was greater in queens than in workers, resulting in significantly queen-biased expression in 2-month-old individuals in both legs and brains. …”
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  17. 377
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    “…Moreover, we expected reduced worker longevity in groups with only young workers due to precocious foraging but no effect on queen longevity depending on group composition. RESULTS: Neither the performance of queens nor that of workers declined strongly with time per se, but offspring number and weight were influenced by queen age and the interaction between queen and worker age. …”
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  20. 380
    “…Then eligible subjects were assessed using exercise tests of Gerkin treadmill, Queen’s College steps and non-exercise George, and Jackson. …”
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