Search for dissertations about: "Age at first reproduction"

Showing result 1 - 5 of 30 swedish dissertations containing the words Age at first reproduction.

  2. 1. The Bronze Age metalwork in southern Sweden : aspects of social and spatial organization 1800-500 B.C

    Author : Thomas B. Larsson; Umeå universitet; []
    Keywords : HUMANIORA; HUMANITIES; Bronsåldern; Föremål; Metaller; Sverige; Bronze metalwork; spatial distributions; social organization; settlement patterns; ideology; production; reproduction; accumulation; exchange; symbols; multivariate analysis.;

    Abstract : The present work highlights the Bronze Age metalwork in Southern Sweden, deposited c. 1800-500 B.C., found as single finds or in burials and hoards. READ MORE

  4. 2. Birth Characteristics’ Impacton Future Reproduction and Morbidity Among Twins an dSingletons

    Author : Marie Bladh; Gunilla Sydsjö; Ann Josefsson; John Carstensen; Orvar Finnström; Karin Pettersson; Linköpings universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Twin; singleton; preterm birth; SGA; reproduction; hospitalization; siblings;

    Abstract : Globally, in both developed and developing countries, the twinning rates have increased since the early 70’s. A large proportion of twins are born preterm and/or small-for-gestational-age (SGA) and/or with a low birth weight. READ MORE

  5. 3. Age, Longevity and Life-History Trade-Offs in the Collared Flycatcher (Ficedula albicollis)

    Author : Joanna Sendecka; Lars Gustafsson; Anna Qvarnström; Pat Monaghan; Uppsala universitet; []
    Keywords : Ecology; age; collared flycatcher; Ficedula albicollis; long-term study; senescence; longevity; reproductive success; selection; individual quality; breeding experience; reproductive effort optimization; terminal investment; life-history trade-offs; reproductive costs; Ekologi;

    Abstract : Age is often a neglected factor in ecological studies. However, age-related changes in reproduction and survival of organisms may strongly influence population dynamics. READ MORE

  6. 4. Life history decisions in a changing environment : A long-term study of a temperate barnacle goose population

    Author : Henk van der Jeugd; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Developmental biology; Age at first reproduction; Barnacle goose; Branta leucopsis; Coloniality; Dispersal; Life-history; Mate choice; Population dynamics; Survival; Utvecklingsbiologi; Developmental biology; Utvecklingsbiologi; Animal Ecology; zooekologi;

    Abstract : This thesis shows that climate and increasing population density have profound effects on survival, age at first reproduction, and natal dispersal in a rapidly increasing temperate barnacle goose Branta leucopsis population on Gotland, Sweden.Colony size was found to be the most important fitness-determinant because of strong density-dependent effects on reproduction. READ MORE

  7. 5. LIVING WITH PARASITES: AVIAN MALARIA, TELOMERE LENGTH AND LIFE HISTORY TRADE-OFFS

    Author : Asghar Muhammad; MEMEG; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Avian malaria; Plasmodium; qPCR; parasitemia; life history; reproduction; survival; feather growth; MHC; telomere length; heritability; telomere loss; fitness; wild population; Acrocephalus arundinaceus; Delichon urbica;

    Abstract : Haemosporidia is a well-studied group of parasites, which infect mammals, reptiles and birds and use blood sucking vectors for their transmission. By conducting natural population studies and experimental infections, We have been able to detect and quantify Haemosporidia from avian blood to investigate how these pathogens affect their avian hosts. READ MORE