Sökning: "juvenile growth rate"

Visar resultat 16 - 20 av 21 avhandlingar innehållade orden juvenile growth rate.

  1. 16. Ovarian response to vascular and toxic insults in early life : focus on ovarian reserve and fertility preservation

    Författare :Valentina Pampanini; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : The ovarian reserve is defined as the number of eggs embodied in primordial follicles. Every woman is born with a fixed number of primordial follicles, which are formed during fetal development. Pathological events can affect the ovarian reserve both preand postnatally and cause a premature ovarian insufficiency (POI), i.e. LÄS MER

  3. 17. Ecotoxicological studies on giant clams (Tridacnidae) : Environmental problems and future concerns

    Författare :Eva Blidberg; Michael Tedengren; David Klumpp; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; giant clam; larval; physiology; zooxanthellae; Biology; Biologi;

    Sammanfattning : Giant clams (Tridacnidae; Bivalvia) are described as important framework builders on coral reefs in the Indo-Pacific region. They are phototrophic as they are associated with primary producing zooxanthellae. Populations are low due to over-exploitation and most species are now endangered in many areas. LÄS MER

  4. 18. Ecology of freshwater mussels in disturbed environments

    Författare :Martin Österling; Larry Greenberg; Björn Arvidsson; David Strayer; Karlstads universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Unionoida; Margaritifera margaritifera; Dreissena; Salmo trutta; habitat degradation; turbidity; sedimentation; recruitment; conservation.; Biology; Biologi; Biology; Biologi;

    Sammanfattning : The number of species extinctions is increasing at an alarming rate. Long-lived freshwater mussels of the order Unionoida, which include a parasitic stage on a host fish, are highly threatened. Habitat degradation by turbidity and sedimentation is thought to be one major reason for their decline. LÄS MER

  5. 19. Strategy games; on survival and reproduction

    Författare :Helen Olofsson; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ekologi; Ecology; evolution of sexual reproduction; dormancy; game theory; migration; bet-hedging; Life history theory;

    Sammanfattning : Classical evolutionary life history concerns questions such as optimal timing of maturation, life span and number of offspring. These questions have mostly been studied theoretically under the assumption that the environment is stable and without taking into account frequency and density dependence. LÄS MER

  7. 20. Seaweed in the tropical seascape : Importance, problems and potential

    Författare :Stina Tano; Christina Halling; Sofia Wikström; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Seaweed; Macroalgae; Eucheumoids; Non-indigenous; Haplotype; Fish; Nursery; Epifauna; Diversity; Seaweed farming; Zanzibar; East Africa; Tropical; marin ekotoxikologi; Marine Ecotoxicology;

    Sammanfattning : The increasing demand for seaweed extracts has led to the introduction of non-native seaweeds for farming purposes in many tropical regions. Such intentional introductions can lead to spread of non-native seaweeds from farming areas, which can become established in and alter the dynamics of the recipient ecosystems. LÄS MER