Sökning: "fleas"

Hittade 3 avhandlingar innehållade ordet fleas.

  1. 1. Pestens gåta : farsoter i det tidiga 1700-talets Skåne

    Författare :Bodil Persson; Historia; []
    Nyckelord :HUMANIORA; HUMANITIES; pestilential fevers; diagnosis; symptoms; pattern of distribution; demography; causes of death; burial records; epizootics; rats; rodents; lice; fleas; regional and local analysis; scurvy; epidemic typhus fever; measles; Plague; smallpox; plague vectors; Modern history up to circa 1800 ; Tidig modern historia till ca. 1800 ; Public health; epidemiology; Folkhälsa; epidemiologi;

    Sammanfattning : This study deals with Sweden’s last outbreak of the plague with focus on Skåne, where the epidemic raged for three years - from late autumn 1710 to late autumn 1713. This was a time of war, crop failures as well as other simultaneously occurring epidemics. LÄS MER

  3. 2. Morphological antipredator adaptations in water fleas

    Författare :Hans Lord; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Body drag; Daphnia cristata; Reynolds number; viscosity; zooplankton; Bosmina; swimming velocity; cyclomorphosis; sexual dimorphism; head area; helmet angle; trophic condition; allometry; invertebrate predator; fish;

    Sammanfattning : Some Bosmina and Daphnia species have the ability to develop extreme morphological antipredator defences, such as long antennules, high carapaces and helmets. The relative sizes of these plastic traits may differ substantially between populations, and also between individuals within a population, between sexes and during ontogeny. LÄS MER

  4. 3. Adaptive and non-adaptive responses to toxin-producing cyanobacteria in water fleas

    Författare :Alexander Hegg; Evolutionär ekologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Organisms regularly encounter stressful conditions that negatively affects their fitness. One way to minimize these negative effects is to use cues from the environment in order to develop an appropriate phenotype. Many populations of water fleas (Daphnia spp. LÄS MER