| 1. |
- Aramo-Immonen, Heli, 1964-, et al.
(författare)
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Metalli taipuu! Kipinä luovaan bisnekseen teollisuudessa
- 2013
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Bok (refereegranskat)abstract
- Tähän kirjaan on kerätty kokemuksia monipolviselta matkalta luovuuden ja innovatiivisuuden sekä teollisuuden toimijoiden kohtauspaikalle Kaleidoskooppi-hankkeeseen. Kirjaan on koottu eri alojen asiantuntijoiden kirjoituksia ja esseitä hankkeen kokemuksista, joita lukija hyödyntää uusien ideoiden lähteenä. Ajatuksena on ollut kuvata monipuolisesti Kaleidoskoopissa kokeiltuja luovia menetelmiä ja pohtia niiden tuloksellisuutta ja merkitystä. Koska mukana on eri alojen toimijoita, ovat myös kirjoitelmat eri tutkimusnäkökulmien ja opetusmetodien muodostama kaleidoskooppi neljään eri aiheeseen. Kirja on pyritty tekemään helppolukuiseksi erottelemalla teemat toisistaan värein. Kirjan loppuun on kerätty linkkejä luovan talouden maailmaan. Lopusta löytyvät myös mukana olleiden tutkijoiden ja asiantuntijoiden esittelyt. Kirjaa voi käyttää oppimateriaalina, hakuteoksena ja lähdeteoksena. Ensisijaisesti verkossa jaettavaksi suunniteltua teosta on lupa jakaa ja hyödyntää yrityksissä ja opetuksessa.
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| 2. |
- Elina, Immonen, et al.
(författare)
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Animal communication : flies' ears are tuned in
- 2011
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Ingår i: Current Biology. - : Elsevier BV. - 0960-9822 .- 1879-0445. ; 21:8, s. R278-R280
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Tidskriftsartikel (refereegranskat)abstract
- Male fruit flies sing to females with quiet, close-range wing vibrations. A new study has found that the flies' antennal ears show active tuning to the species-specific frequencies of songs.
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| 3. |
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| 4. |
- Immonen, Elina, et al.
(författare)
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Mating system variation drives rapid evolution of the female transcriptome in Drosophila pseudoobscura
- 2014
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Ingår i: Ecology and Evolution. - : Wiley. - 2045-7758. ; 4:11, s. 2186-2201
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Tidskriftsartikel (refereegranskat)abstract
- Interactions between the sexes are believed to be a potent source of selection on sex-specific evolution. The way in which sexual interactions influence male investment is much studied, but effects on females are more poorly understood. To address this deficiency, we examined gene expression in virgin female Drosophila pseudoobscura following 100 generations of mating system manipulations in which we either elevated polyandry or enforced monandry. Gene expression evolution following mating system manipulation resulted in 14% of the transcriptome of virgin females being altered. Polyandrous females elevated expression of a greater number of genes normally enriched in ovaries and associated with mitosis and meiosis, which might reflect female investment into reproductive functions. Monandrous females showed a greater number of genes normally enriched for expression in somatic tissues, including the head and gut and associated with visual perception and metabolism, respectively. By comparing our data with a previous study of sex differences in gene expression in this species, we found that the majority of the genes that are differentially expressed between females of the selection treatments show female-biased expression in the wild-type population. A striking exception is genes associated with male-specific reproductive tissues (in D.melanogaster), which are upregulated in polyandrous females. Our results provide experimental evidence for a role of sex-specific selection arising from differing sexual interactions with males in promoting rapid evolution of the female transcriptome.
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| 5. |
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| 6. |
- Immonen, Elina
(författare)
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The genomic response to courtship song stimulation in female Drosophila melanogaster
- 2012
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Ingår i: Proceedings of the Royal Society of London. Biological Sciences. - : The Royal Society. - 0962-8452 .- 1471-2954.
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Tidskriftsartikel (refereegranskat)abstract
- Courtship behaviour involves a complex exchange of signals and responses. These are usually studied at the phenotypic level, and genetic or transcriptional responses to courtship are still poorly understood. Here, we examine the gene-expression changes inDrosophila melanogasterfemales in response to one of the key male courtship signals in mate recognition, song produced by male wing vibration. Using long oligonucleotide microarrays, we identified several genes that responded differentially to the presence or absence of acoustic courtship stimulus. These changes were modest in both the number of genes involved and fold-changes, but notably dominated by antennal signalling genes involved in olfaction as well as neuropeptides and immune response genes. Second, we compared the expression patterns of females stimulated with synthetic song typical of either conspecific or heterospecific (Drosophila simulans) males. In this case, antennal olfactory signalling and innate immunity genes were also enriched among the differentially expressed genes. We confirmed and investigated the time course of expression differences of two identified immunity genes using real-time quantitative PCR. Our results provide novel insight into specific molecular changes in females in response to courtship song stimulation. These may be involved in both signal perception and interpretation and some may anticipate molecular interactions that occur between the sexes after mating.
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| 7. |
- Immonen, Elina
(författare)
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What do we need to know about speciation?
- 2012
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Ingår i: Trends in Ecology & Evolution. - : Elsevier BV. - 0169-5347 .- 1872-8383. ; 27:1, s. 27-39
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Forskningsöversikt (refereegranskat)abstract
- Speciation has been a major focus of evolutionary biology research in recent years, with many important advances. However, some of the traditional organising principles of the subject area no longer provide a satisfactory framework, such as the classification of speciation mechanisms by geographical context into allopatric, parapatric and sympatry classes. Therefore, we have asked where speciation research should be directed in the coming years. Here, we present a distillation of questions about the mechanisms of speciation, the genetic basis of speciation and the relationship between speciation and diversity. Our list of topics is not exhaustive; rather we aim to promote discussion on research priorities and on the common themes that underlie disparate speciation processes.
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| 8. |
- Karamanakos, Petros N., et al.
(författare)
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Malignant giant cell tumor in the posterior fossa of a neonate : case report
- 2010
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Ingår i: Journal of Neurosurgery. - 1933-0707 .- 1933-0715. ; 5:3, s. 277-282
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Tidskriftsartikel (refereegranskat)abstract
- Giant cell tumors (GCTs) of the bone are rare, usually benign but locally aggressive neoplasms that primarily occur in the epiphyses of long bones. They seldom develop in the cranium; when they do, they involve principally the sphenoid and temporal bones. These tumors usually affect young adults, and few reports in children have been published. Primary malignant GCTs of the skull are even more uncommon. The 3 published cases all involved adults over 40 years of age. Herein, the authors present a case of a highly aggressive primary malignant GCT of the posterior fossa in a 5-week old preterm infant. One month after the gross-total resection of the tumor found in the bone, the infant's condition rapidly deteriorated and she died. Magnetic resonance imaging and postmortem examination revealed a tumor larger than it had been before the operation, with expansion toward the brain. To the best of the authors' knowledge, this is the youngest patient reported with a primary malignant GCT of the skull, and actually the first case in a pediatric patient. In addition, the extremely high growth rate of the tumor in the postoperative period renders this case the most aggressive primary malignant GCT of the cranium described so far.
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| 9. |
- Løvlie, Hanne, et al.
(författare)
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The influence of mitonuclear genetic variation on personality in seed beetles
- 2014
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Ingår i: Proceedings of the Royal Society of London. Biological Sciences. - : Royal Society. - 0962-8452 .- 1471-2954. ; 281:1796
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Tidskriftsartikel (refereegranskat)abstract
- There is a growing awareness of the influence of mitochondrial genetic variation on life-history phenotypes, particularly via epistatic interactions with nuclear genes. Owing to their direct effect on traits such as metabolic and growth rates, mitonuclear interactions may also affect variation in behavioural types or personalities (i.e. behavioural variation that is consistent within individuals, but differs among individuals). However, this possibility is largely unexplored. We used mitonuclear introgression lines, where three mitochondrial genomes were introgressed into three nuclear genetic backgrounds, to disentangle genetic effects on behavioural variation in a seed beetle. We found within-individual consistency in a suite of activity-related behaviours, providing evidence for variation in personality. Composite measures of overall activity of individuals in behavioural assays were influenced by both nuclear genetic variation and by the interaction between nuclear and mitochondrial genomes. More importantly, the degree of expression of behavioural and life-history phenotypes was correlated and mitonuclear genetic variation affected expression of these concerted phenotypes. These results show that mitonuclear genetic variation affects both behavioural and life-history traits, and they provide novel insights into the maintenance of genetic variation in behaviour and personality.
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| 10. |
- Pettersson, Elina, et al.
(författare)
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Social media utilization in B2B networks' organizational learning : Review and research agenda proposal
- 2014
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Ingår i: Journal of Mobile Multimedia. - : Rinton Press Inc.. - 1550-4646 .- 1550-4654. ; 10:3-4, s. 218-233
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Forskningsöversikt (refereegranskat)abstract
- Knowledge management (KM) in a business-to-business (B2B) network is a different task than intraorganizational KM. Therefore this conceptual paper searches for an answer to the question of what we should re-search in this more demanding KM environment. We suggest that the social media provides a variety of vehicles for performing organizational learning via KM in B2B networks. Since this is relatively novel research area, we have done a literature review and propose a research agenda in this article.
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