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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

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Showing 21 to 22 of 22 (0.145 seconds)

Spelling suggestions: "subject:"desiccation tolerance"" "subject:"dessiccation tolerance""

21

Životní cyklus řas z druhového komplexu Haematococcus pluvialis (Chlorophyceae) / Life cycle of Haematococcus pluvialis (Chlorophyceae) species complex

Vávrová, Karolína January 2017 (has links)
Freshwater green algae within species complex Haematococcus pluvialis are best natural producers of secondary carotenoid astaxanthin famous for its strong antioxidant activity. Despite worldwide distribution, great biotechnological potential and extensive literature dealing with different approaches to the cultivation of these organisms, there still remains surprising gaps in knowledge of their complex life cycle and behaviour. First uncertainty concerns asexual cell division of zoospores, hypothetically limited to five cell doublings (Lee & Ding 1994). No such genetic limitation was observed in this thesis, number of cell divisions is thus influenced mainly by cultivation conditions. There is still considerable uncertainty regarding to the asexual reproduction, as well. Ambiguity might be caused by scarce observation of the whole process of gametogenesis and conjugation of gametes. Published studies differed in some particular points. Unfortunately, we did not succeed in induction of gametogenesis despite broad scale of tested cultivation conditions applied to two different species within the H. pluvialis complex, namely H. pluvialis and H. rubicundus. This failure might be caused by heterothalism of the studied strains. Haematococcus pluvialis inhabits mainly ephemeral pools. Its ability to...
22

Evolutionary responses of arthropods to the novel selective pressures of urbanization

Yilmaz, Aaron Richard 23 May 2022 (has links)
No description available.
Biology
Climate Change
Ecology
Entomology
Evolution and Development
Morphology
Organismal Biology
Physiology
Zoology
Body size
CT(max)
CT(min)
Global change
Thermal tolerance
Urban heat island
Adaptation
Plasticity
Running speed
Desiccation tolerance
Eco-evolutionary dynamics

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