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We investigated the temporal relationship of parental morbidity and mortality with offspring’s suicide attempt and whether any such association was modified by offspring’s age at attempt. We designed a matched case-control study through register linkage. Cases comprised all individuals in Sweden born 1973–1983 with inpatient care due to suicide attempt (15–31 years old, N = 15 193). Regression models were applied. Particularly for women, most parental markers showed the strongest effect sizes if exposure was short-term (within 2 years after exposure) and related to the mother. Regarding exposure to parental inpatient care due to psychiatric diagnoses, short-term as opposed to long-term (exceeding 2 years after exposure) effects were highest during adolescence and decreased significantly with age for female and male offspring, respectively. The results suggest that the high short-term risks of suicide attempt in case of exposure to parental psychopathology and suicidal behavior are of direct clinical importance. [ABSTRACT FROM AUTHOR]

Larval dispersal and spatial distribution of reproducing females of Pandalus borealis in the Barents Sea were investigated. The approach was based on particle tracking using flow fields and a biological model incorporating ontogenetic migration and temperature dependent development of the zoea stages. By the use of individual-based particle-tracking models it is possible to assess the life history of individuals, as opposed to an Eulerian model. The years simulated in this study were 1996–1998. New data on larval hatching, development and behaviour from laboratory experiments and field studies are presented. Annual shrimp surveys conducted by the Norwegian Institute of Fisheries and Aquaculture provided abundance estimates of spawning and one year old shrimp. The biological model simulated the larval development of shrimp from hatching to zoea V, and their vertical migratory behaviour. The results indicated large inter-annual variability with respect to dispersion. This is most likely explained by the position of the Polar Front and the inflow of Atlantic water into the Barents Sea. The spatial distribution of modelled settled larvae was in good agreement with the abundance of 1 year old juveniles obtained from trawl surveys. The distance travelled by a shrimp larvae varied between 0 and 330 km and the annual mean distance varied between 74 and 122 km. Female shrimp in the entire Barents Sea contributed to recruitment to the stock, which is considered to be one population. Therefore, the female component of the shrimp stock has to be the target of management throughout the Barents Sea. [Copyright &y& Elsevier]