Sökning: "eggshell"

Visar resultat 1 - 5 av 7 avhandlingar innehållade ordet eggshell.

1. 1. The avian eggshell : the impact of evolution, growth rate and mode of development on the structure and function of the avian eggshell

   Författare :Ola Österström; Claes Lilja; Andrezj Elzanowski; Linnéuniversitetet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Zoonotisk ekologi; Zoonotic Ecology;

   Sammanfattning : .... LÄS MER

3. 2. The insect eggshell : ultrastructure, organisation and adaptive traits in Odonata and Diptera

   Författare :Göran Sahlén; Uppsala universitet; []
   Nyckelord :NATURAL SCIENCES; NATURVETENSKAP;

   Sammanfattning : .... LÄS MER

4. 3. Eggshell thickness and levels of DDT, PCB and mercury in eggs of osprey [Pandion haliaetus (L.)] and marsh harrier [Circus aeruginosus (L.)] in relation to their breeding success and population status in Sweden

   Författare :Tjelvar Odsjö; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Birds; metabolism; predatory birds; contamination; toxicity; population dynamics; sweden; Fiskgjuse; Brun kärrhök;

   Sammanfattning : .... LÄS MER

5. 4. From Parasitoids to Gall Inducers and Inquilines : Morphological Evolution in Cynipoid Wasps

   Författare :Hege Vårdal; Fredrik Ronquist; Göran Sahlén; Ulf Jondelius; Nunzio Isidoro; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biology; gall inducer; parasitoid; inquiline; gall induction; morphology; Biologi; Biology; Biologi;

   Sammanfattning : One of the large lineages of parasitic wasps, the Cynipoidea, exhibits three distinctly different life modes. Slightly more than half of the about 3000 species are parasitoids in insect larvae, whereas the remaining species are associated with plants, either as gall inducers or as inquilines (guests feeding on plant tissue in galls). LÄS MER

7. 5. Environmental pollutants and the reproductive system in birds : Developmental effects of estrogenic compounds

   Författare :Cecilia Berg; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Developmental biology; Avian embryo; test system; xeno-estrogen; endocrine disruption; reproductive organ differentiation; oviduct; testis; Utvecklingsbiologi; Developmental biology; Utvecklingsbiologi; Ecotoxicology; ekotoxikologi;

   Sammanfattning : A number of environmental pollutants have been shown to mimick the action of the female sex hormone estrogen and are, therefore, suspected to be responsible for reproductive abnormalities seen in wildlife. Test systems which can be used in hazard and risk assessment of chemicals with estrogenic effects are consequently needed. LÄS MER