Results 41 to 50 of about 4,199 (201)
Nuptiality in Early 20th Century Yekaterinburg: Quantitative Analysis
Известия Уральского федерального университета. Серия 2: Гуманитарные науки, 2019 This article analyses one of the main characteristics of the demographic behaviour of Russian citizens, i.e. their age at first marriage and its dynamics in the early twentieth century. The authors examine the situation in Yekaterinburg, a compact but an
Elena Mikhailovna Glavatskaya +3 more
doaj +1 more source
Ethology, Volume 132, Issue 3, Page 183-193, March 2026.Male courtship can serve various purposes such as species recognition, mate localization, or advertisement of individual quality and physical condition. In predatory species such as spiders, courtship activity by the male might also reduce the risk of being predated on by the female.
Stefan ter Haar +2 more
wiley +1 more source
Migração Portuguesa para São Paulo na segunda metade do século XIX: um estudo de caso
AlmanackResumo Por meio da análise de uma singular experiência migratória ocorrida entre Portugal (Província da Beira / Concelho da Lousã) e a província de São Paulo (região de Espírito Santo do Pinhal) apresentam-se algumas considerações sobre as ...
Ana Silvia Volpi Scott
doaj +1 more source
Measuring and explaining the baby boom in the developed world in the mid-twentieth century
Demographic Research, 2018 Background: The early research on the baby boom tried to account for it as a logical recovery following the end of the Second World War (WWII). But it cannot be understood merely as a post-war phenomenon because its origins go back to the 1930s and early
Jesús J. Sánchez-Barricarte
doaj +1 more source
Sex‐Specific Control and Incomplete Matings: Sperm Removal Behavior in a Bush Cricket Species
Ethology, Volume 132, Issue 3, Page 194-203, March 2026.In this study, we investigated which sex influences the duration of sperm removal behaviour (SRB) in the ornate bush cricket, Metaplastes ornatus. Female traits showed a weak effect on SRB duration, and lighter females mated more frequently. Frequent unsuccessful mating terminations shortened SRB indicating high level of sexual conflict.
Chiara Flaskamp +2 more
wiley +1 more source
Ips acuminatus (Gyllenhal) in the Czech Republic: Flight dynamics and adult population structure
Physiological Entomology, Volume 51, Issue 1, Page 136-146, March 2026.Ips acuminatus exhibits a univoltine life cycle in Central Europe and no full second generation in midsummer. The sex ratio shifts from male‐biased in spring to slightly female‐biased with the season, with over 90% of females mated. Among the pheromone lures tested, the ACP was most attractive, and combining ACP and PH lures could be used for effective
Daniela Hlávková +3 more
wiley +1 more source
Elaboration of the Coale-McNeil Nuptiality Model as The Generalized Log Gamma Distribution [PDF]
The Coale-McNeil nuptiality model is a particular case of the generalized log gamma distribution model. In this paper, we demonstrate that recognition of this connection allows an expansion of the possible applications of the Coale-McNeil model.
Ryuichi Kaneko
core
Ecology and Evolution, Volume 16, Issue 2, February 2026.Precopulatory mating behaviour, are important for fitness and can be disrupted by heatwave's. Here we assess how differing levels of intrasexual and intrasexual selection in precopulatory mating behaviours impacts fitness responses to heatwaves. We find that the likelihood of having a brood is impacted by differences in intrasexual and intersexual ...
Karendeep K. Sidhu +4 more
wiley +1 more source
Demographic trends in Sweden [PDF]
In the present note, we present the main features of recent trends in vital family-demographic behavior in Sweden. For this purpose, published indices of marriage, divorce, and childbearing risks by calendar year are updated by adding another two or ...
Gunnar Andersson
core +3 more sources
Another tempo distortion: analyzing controlled fertility by age-specific marital fertility rate [PDF]
The rise in marital fertility in East Asian societies with very low fertility has been reported through analyses using the age-specific marital fertility rate (AMFR).
Kiyosi Hirosima
core