[Review of] Carolyn Gilman and Mary Jane Schneider. The Way to Independence: Memories of a Hidatsa Indian Family, 1840-1920

In the early 1800s, when Lewis and Clark visited the Hidatsas, they lived at the mouth of the Knife River with their close allies the Mandans. The estimated 2,000 Hidatsas farmed the fertile valleys and lived in villages overlooking the river. But in 1837, smallpox struck these village dwellers and diminished their numbers by half. The remainder of Hidatsas and Mandans decided to leave their homes and journey north, settling in Like-a-Fishhook village. In 1885, the Hidatsas moved again, this time settling in Independence, North Dakota

[Review of] Beth Brant, ed. A Gathering of Spirit: A Collection by North American Indian Women

In A Gathering of Spirit, Beth Brant has collected poetry, short stories, letters, and essays written by Native American women, relating their experiences of life in Canada and in the United States. The participating women come from all walks of life. Included are such established authors and scholars as Paula Gunn Allen, Joy Harjo, and Bea Medicine as well as women in prisons, lesbians, and those who live their everyday life on reservations or in urban centers. What unites these women are their experiences as Indian women

Critique [of Oral Traditions Under Threat: The Australian Aboriginal Experience by Christine Morris]

In her essay, Christine Morris addresses an important topic in the study of ethnic relations: the relationship between the written word and the oral tradition. She points out that studies often concentrate on the economic and social effects that the written tradition has on oral cultures; however, the ethics of this process has been ignored in research. Morris examines this aspect of the relationship and argues that the replacement of the oral tradition with the written word is a continuation of western chauvinism that has been the basis of the European conquest of aboriginal cultures in the world. The replacement of the oral with the written is thus a form of colonialism -- although very subtle -- in its argument to protect and save oral traditions for posterity. But the written word can only supplement the oral tradition; it cannot -- and it should not -- supplant orality

Meaningful learning with mobile devices: pre-service class teachers’ experiences of mobile learning in the outdoors

The authors consider the use of mobile learning environment ActionTrack in teacher education. Pre-service class teachers’ (N = 277) experiences of the mobile learning environment were measured with a 7-point Likert-scale questionnaire based on seven attributes of meaningful learning. Students’ ratings for different attributes were analysed quantitatively. The authors conclude that, based on this analysis, it is possible to create meaningful learning experiences using ActionTrack. All the measured attributes of meaningful learning obtained positive values. In the mobile learning events of this study, three attributes arose as the essential features: mobile learning in the outdoors was primarily considered collaborative, active and contextual.</p

How consistent are the transcriptome changes associated with cold acclimation in two species of the Drosophila virilis group?

This work was financially support by a Marie Curie Initial Training Network grant, “Understanding the evolutionary origin of biological diversity” (ITN-2008–213780 SPECIATION), grants from the Academy of Finland to A.H. (project 132619) and M.K. (projects 268214 and 272927), a grant from NERC, UK to M.G.R. (grant NE/J020818/1), and NERC, UK PhD studentship to D.J.P. (NE/I528634/1).For many organisms the ability to cold acclimate with the onset of seasonal cold has major implications for their fitness. In insects, where this ability is widespread, the physiological changes associated with increased cold tolerance have been well studied. Despite this, little work has been done to trace changes in gene expression during cold acclimation that lead to an increase in cold tolerance. We used an RNA-Seq approach to investigate this in two species of the Drosophila virilis group. We found that the majority of genes that are differentially expressed during cold acclimation differ between the two species. Despite this, the biological processes associated with the differentially expressed genes were broadly similar in the two species. These included: metabolism, cell membrane composition, and circadian rhythms, which are largely consistent with previous work on cold acclimation/cold tolerance. In addition, we also found evidence of the involvement of the rhodopsin pathway in cold acclimation, a pathway that has been recently linked to thermotaxis. Interestingly, we found no evidence of differential expression of stress genes implying that long-term cold acclimation and short-term stress response may have a different physiological basis.PostprintPeer reviewe

Acoustic signals in the sand fly Lutzomyia (Nyssomyia) intermedia (Diptera: Psychodidae)

<p>Abstract</p> <p>Background</p> <p>Acoustic signals are part of the courtship of many insects and they often act as species-specific signals that are important in the reproductive isolation of closely related species. Here we report the courtship songs of the sand fly <it>Lutzomyia (Nyssomyia) intermedia</it>, one of the main vectors of cutaneous leishmaniasis in Brazil.</p> <p>Findings</p> <p>Recordings were performed using insects from three localities from Eastern Brazil: Posse and Jacarepaguá in Rio de Janeiro State and Corte de Pedra in Bahia State. The three areas have remnants of the Brazilian Atlantic forest, they are endemic for cutaneous leishmaniasis and <it>L. intermedia </it>is the predominant sand fly species. We observed that during courtship <it>L. intermedia </it>males from all populations produced pulse songs consisting of short trains. No significant differences in song parameters were observed between the males of the three localities.</p> <p>Conclusions</p> <p><it>L. intermedia </it>males produce acoustic signals as reported for some other sand flies such as the sibling species of the <it>Lutzomyia longipalpis </it>complex. The lack of differences between the males from the three localities is consistent with previous molecular studies of the <it>period </it>gene carried out in the same populations, reinforcing the idea that <it>L. intermedia </it>is not a species complex in the studied areas and that the three populations are likely to have similar vectorial capacities.</p

Both male and female identity influence variation in male signalling effort

<p>Abstract</p> <p>Background</p> <p>Male sexual displays play an important role in sexual selection by affecting reproductive success. However, for such displays to be useful for female mate choice, courtship should vary more among than within individual males. In this regard, a potentially important source of within male variation is adjustment of male courtship effort in response to female traits. Accordingly, we set out to dissect sources of variation in male courtship effort in a fish, the desert goby (<it>Chlamydogobius eremius</it>). We did so by designing an experiment that allowed simultaneous estimation of within and between male variation in courtship, while also assessing the importance of the males and females as sources of courtship variation.</p> <p>Results</p> <p>Although males adjusted their courtship depending on the identity of the female (a potentially important source of within-male variation), among-male differences were considerably greater. In addition, male courtship effort towards a pair of females was highly repeatable over a short time frame.</p> <p>Conclusion</p> <p>Despite the plasticity in male courtship effort, courtship displays had the potential to reliably convey information about the male to mate-searching females. Our experiment therefore underscores the importance of addressing the different sources contributing to variation in the expression of sexually-selected traits.</p

Zdravstveno obrazovanje i informiranje koje provode službe medicine rada u Finskoj

This article discusses health education and communication in Occupational Health Services (OHS) based on a questionnaire study conducted in Finnish OHS in 2005. The study focused on educational activities carried out by OH professionals and directed at individual employees, work communities and groups, and representatives of client organisations. The questionnaire was sent to 1132 OH professionals - physicians, nurses, physiotherapists and psychologists - working in 130 OHS units, and representing different OHS providers in Finland. 635 respondents (162 physicians, 342 nurses, 96 physiotherapists, 35 psychologists) returned the questionnaire. The overall response rate was 58 %. There were statistically significant differences in educational activities by different professional groups; differences were also related to the length of working experience in OHS. For all OH professionals, individual employees were the primary clients of health education and communication. Education was less often directed at work communities and representatives of client organisations. However, many issues related to health and well-being at work are not within the reach of individual employees. The impact of health education would be more evident if it also reached those organisational stakeholders with discretion in decision-making. Furthermore, OH personnel should pay attention to the social aspect of learning and work more with groups and work communities.U ovome se članku raspravlja o zdravstvenom obrazovanju i informiranju koje provode službe medicine rada, a na temelju istraživanja provedenog među tim službama 2005. U središtu su ispitivanja bile obrazovne aktivnosti medicinara rada usmjerene na radnike kao pojedince, radne zajednice i skupine te predstavnike korisničkih organizacija. Upitnik su dobila 1132 medicinara rada, uključujući liječnike, medicinske sestre, fizioterapeute i psihologe zaposlene u 130 jedinica koje pružaju usluge medicine rada u Finskoj. Ispunjene je upitnike vratilo 635 sudionika (162 liječnika, 342 sestre, 96 fizioterapeuta te 35 psihologa). Ukupni odgovor iznosio je 58 %. Zamijećene su statistički značajne razlike u obrazovnim aktivnostima između pojedinih zanimanja, a one su bile povezane i sa stažem u medicini rada. Svim medicinarima rada pojedinačni radnici primarni su korisnici zdravstvenoga obrazovanja i informiranja. Obrazovanje se rjeđe usmjeravalo na radne zajednice i predstavnike korisničkih organizacija. Međutim, mnoga otvorena pitanja vezana uz zdravlje i dobrobit na radu nisu u nadležnosti pojedinačnih zaposlenika. Utjecaj zdravstvenoga obrazovanja bio bi stoga svrhovitiji kada bi ono obuhvatilo i one strukture koje donose odluke. Osim toga, osoblje medicine rada treba obratiti pozornost na socijalni aspekt učenja te treba više raditi sa skupinama i radnim zajednicama

Quantification of carbon and phosphorus co-limitation in bacterioplankton: new insights on an old topic

Because the nature of the main resource that limits bacterioplankton (e.g. organic carbon [C] or phosphorus [P]) has biogeochemical implications concerning organic C accumulation in freshwater ecosystems, empirical knowledge is needed concerning how bacteria respond to these two resources, available alone or together. We performed field experiments of resource manipulation (2×2 factorial design, with the addition of C, P, or both combined) in two Mediterranean freshwater ecosystems with contrasting trophic states (oligotrophy vs. eutrophy) and trophic natures (autotrophy vs. heterotrophy, measured as gross primary production:respiration ratio). Overall, the two resources synergistically co-limited bacterioplankton, i.e. the magnitude of the response of bacterial production and abundance to the two resources combined was higher than the additive response in both ecosystems. However, bacteria also responded positively to single P and C additions in the eutrophic ecosystem, but not to single C in the oligotrophic one, consistent with the value of the ratio between bacterial C demand and algal C supply. Accordingly, the trophic nature rather than the trophic state of the ecosystems proves to be a key feature determining the expected types of resource co-limitation of bacteria, as summarized in a proposed theoretical framework. The actual types of co-limitation shifted over time and partially deviated (a lesser degree of synergism) from the theoretical expectations, particularly in the eutrophic ecosystem. These deviations may be explained by extrinsic ecological forces to physiological limitations of bacteria, such as predation, whose role in our experiments is supported by the relationship between the dynamics of bacteria and bacterivores tested by SEMs (structural equation models). Our study, in line with the increasingly recognized role of freshwater ecosystems in the global C cycle, suggests that further attention should be focussed on the biotic interactions that modulate resource co-limitation of bacteria.This research was supported by Junta de Andalucía (Excelencia P09-RNM-5376 to JMMS) and the Spanish Ministry Ciencia e Innovación (CGL2011-23681 to PC)