Sökning: "Reproductive history"

Visar resultat 21 - 25 av 186 avhandlingar innehållade orden Reproductive history.

1. 21. Causes and consequences of life-history variation : The effects of parasites, glucocorticoids, and environmental conditions in the collared flycatcher (Ficedula albicollis)

   Författare :Kevin Fletcher; Lars Gustafsson; Anders Pape Moller; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Collard flycatcher; Haemosporidian blood parasite; glucocorticoid; life history;

   Sammanfattning : Life-history is the study of all the different stages of life that affect reproductive success and survival between the birth and death of an organism. The reproductive output of an organism is constrained by many things including time, resource, disease agents and environmental conditions. LÄS MER

3. 22. Reproductive hazards in an industrial setting : an epidemiological assessment

   Författare :Marianne Wulff; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Occupational exposure; environmental exposure; copper smelter; epidemiology; adverse reproductive outcome;

   Sammanfattning : Background: As more women of childbearing age engage in the workforceand a lot of new chemicals are available, a growing interest of diagnosing andpreventing reproductive disorders due to occupational and environmentalexposure has occurred. The source location of this thesis is the Rönnskärcopper smelter which is situated in the north of Sweden, in the municipality of Skellefteå. LÄS MER

4. 23. Age-specific trade-offs in life-history evolution

   Författare :Martyna K. Zwoinska; Alexei Maklakov; Marjo Saastamoinen; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; life history; trade-off; learning; aging; sex differences; dispersal; Caenorhabditis; Drosophila; Biologi med inriktning mot zooekologi; Biology with specialization in Animal Ecology;

   Sammanfattning : Trade-offs prevent selection from driving all fitness-enhancing traits towards values that would maximize fitness. Life-history trade-offs, such as the one between survival and reproduction are well-studied, yet trade-offs can also involve behavioural or cognitive traits. LÄS MER

5. 24. Life History of the Common Gull (Larus canus) : A Long-Term Individual-Based Study

   Författare :Kalev Rattiste; Mats Björklund; Jon E Brommer; Jan-Åke Nilsson; Uppsala universitet; []
   Nyckelord :Ecology; longitudinal studies; reproductive success; survival; pair bond; indicator trait; breeding time; heritability; selection; Ekologi; Larus canus; ekologisk botanik; Ecological Botany;

   Sammanfattning : An individual’s life history is a sequence of events which eventually determine its contribution to the next generation, or fitness. These events are affected by environmental factors, genetic make-up and decisions made by an individual and its breeding partner. LÄS MER

7. 25. Polycystic ovary syndrome: ovarian pathophysiology and consequences after the menopause

   Författare :Johanna Schmidt; Göteborgs universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; body composition; bone mineral density; cardiovascular disease; fracture; gene expression; menopause; mortality; ovary; polycystic ovary syndrome; reproductive hormones;

   Sammanfattning : Polycystic ovary syndrome Ovarian pathophysiology and consequences after the menopause Johanna Schmidt Institute of Clinical Sciences at Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden, 2011 The Polycystic Ovary Syndrome (PCOS) is an endocrine disorder affecting ~10% of women. It is characterized by oligo/anovulation, hyperandrogenism, and polycystic ovaries. LÄS MER