L'existence et la persistance de mouvements nationalistes peuvent avoir plusieurs explications, dont l'une est liée aux générations – à la façon dont elles ont été socialisées à la politique dans des contextes sociétaux distincts, et comment les générations plus âgées sont remplacées par les plus jeunes à travers le temps. Pour mieux comprendre l’évolution du nationalisme au Québec, cette étude s'appuie sur les six dernières Études électorales québécoises (2007–2022) et utilise un modèle âge-période-cohorte pour examiner la relation entre les groupes générationnels et divers indicateurs du nationalisme. Les résultats révèlent effectivement une histoire générationnelle. Les baby-boomers se distinguent particulièrement des autres générations par leur attachement au Québec, leur soutien au projet d'indépendance et leur appui au Parti québécois, tandis que les millénariaux soutiennent davantage Québec solidaire et les membres de la génération X appuient davantage la Coalition avenir Québec. Ainsi, il cohabite actuellement différentes « générations nationalistes » au Québec.

The challenge of this paper is to re-examine the demographics which underlie the re-write of social policy in an aging Canada, as related to gender, family and generation. Following a brief consideration of Canada's changes and challenges in comparison to those in the United States and selected European countries, the analytical construct, “life cycles of dependencies and responsibilities” is introduced and utilized to examine shifting bases of security among generations (with a focus on six cohorts), and in particular, the implications of possible changes to social policy for the elderly on women, the poor and other disadvantaged elders.

Populations of Rhipicephtdus sanguineus, Dermacentor variabilis and Amblyomma maculatum with high and low oviposition capacities were successfully bred in the laboratory. Mating of male and female ticks which possess high oviposition capacity produced female progenies with high oviposition capacity; male and female ticks which possess low oviposition capacity produced female progenies which possess low oviposition capacity. Crossmatings of males with females of opposite oviposition capacity produced female progenies which acquired the category of oviposition capacity of the males in predominant numbers after fourth and fifth generations. It is suggested that the genetic factor for high or low oviposition capacity is either possessed by male ticks alone or is stronger and dominant in the male over that of the female. This genetic factor is also potentiated by successive crossmatings of males and females possessing opposite oviposition capacities.

The possible application of these results to tick control through the suppression of natural population by field release of laboratory-bred populations of male ticks which possess low oviposition capacity is discussed.

Three generations of the maize stalk borer, Busseola fusca (Fuller) per year were observed in maize fields in Southern Ethiopia. However, the third generation was not important on maize. The first generation developed on young maize plants during the wet season (April–July). The second generation occurred in July and majority of larvae went into diapause from September to February while a small proportion pupated in the months of September and October and gave rise to a third generation. Pupation of the diapause larvae was observed in April.

Female moths from the first (non-diapause) generation laid significantly more eggs than those coming from a diapause generation. Longevity of these moths was also significantly longer than the diapause generation. Despite the indicated differences, female moths from both generations laid most of their eggs between the second and fifth nights after emergence. The number of eggs laid and rates of hatching declined with age of moths irrespective of generations.