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Cleft sentences in English and Norwegian
Mojžíšová, Kateřina ; Šaldová, Pavlína (advisor) ; Dušková, Libuše (referee)
The subject of this thesis is the use of the cleft construction in English and Norwegian. These languages employ a formally similar construction to focus a sentence element, but the use of the construction is not always identical. The analysis is carried out on English and Norwegian translations of Czech texts. The main aim of this thesis is to identify and analyse possible types of motivation for the use of the cleft construction. The studied types of motivation are the FSP, textual and syntactic motivation. The analysis of the FSP motivation is based on the theory of the FSP as described by Jan Firbas (Firbas 1992). The list of textual functions is based on the work of Jan Firbas (Firbas 1995) and Hilde Hasselgrd (Hasselgrd 2004). Some types of the syntactic motivation are proposed by Libuše Dušková (Dušková 1999: 319), but the types described in this thesis result from the present analysis. In addition to the motivation for the use of the construction, the thesis deals with Norwegian and English counterparts of the analysed cleft sentences. These counterparts are divided into three groups: the cleft or pseudo-cleft construction, the underlying non-cleft construction and a different construction (cf. chapter 4.4.). The purpose of the analysis is to find where the use of the cleft construction differs in...
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Physiological and hormonal mechanisms influencing ejaculate quality in birds
Mojžišová, Kateřina ; Tomášek, Oldřich (advisor) ; Svobodová, Jana (referee)
Sexual selection is an important mechanism of evolution. In addition to precopulatory sexual selection, arising when males compete for female partners, there is also postcopulatory sexual selection (sperm competition), when females copulate with more males. Even though most avian species are socially monogamous, most of them are also partially promiscuous. In such species, sperm competition is an important factor increasing variability in reproductive success between males. Male's success in sperm competition is primarily determined by sperm concentration, total sperm count and morphology and motility of spermatozoa. My bachelor thesis summarizes knowledge about the hormonal a physiological mechanisms that influence semen quality. This is especially the effect of sex and other hormones, physiological and oxidative stress, environmental conditions, antioxidant mechanism and composition of sperm cell membrane. Besides evaluating their influence on ejaculate quality on intraspecific level, I also describe their differences between avian species with respect to the differences of sperm competition.
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Carotenoid allocation and redox homeostasis in birds
Mojžišová, Kateřina ; Tomášek, Oldřich (advisor) ; Svobodová, Jana (referee)
In many species carotenoid-based ornaments plays fundamental role in sexual selection. It is believed that carotenoid-based ornaments act as indicators of individual quality and condition during mate-choice, as associations between their expression, individual fintess and various condition indicators were observed. Despite the long-term research, mechanisms ensuring signalling honesty remain unknown. Currently, the most accepted hypothesis suggests antioxidant properties of carotenoids, and, therefore, a trade-off between their allocation to ornamentation or defence against free radicals. The antioxidant function of carotenoids in vivo was challenged in birds, however, and alternative hypotheses were proposed, assuming either carotenoid loss due to free-radical oxidation, or harmful (pro- oxidant) effects of high carotenoid levels in the body, or interconnection of metabolic pathways for both, the carotenoid conversion and homeostatic control of mitochondrial respiration and redox state. These hypotheses assume differing allocation of carotenoids under elevated oxidative stress, which we tested using experimental manipulations of oxidative state and carotenoid intake in adult male zebra finches (Taeniopygia guttata). The results are inconsistent with all the alternative hypotheses, but partly...
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Physiological and hormonal mechanisms influencing ejaculate quality in birds
Mojžišová, Kateřina ; Tomášek, Oldřich (advisor) ; Svobodová, Jana (referee)
Sexual selection is an important mechanism of evolution. In addition to precopulatory sexual selection, arising when males compete for female partners, there is also postcopulatory sexual selection (sperm competition), when females copulate with more males. Even though most avian species are socially monogamous, most of them are also partially promiscuous. In such species, sperm competition is an important factor increasing variability in reproductive success between males. Male's success in sperm competition is primarily determined by sperm concentration, total sperm count and morphology and motility of spermatozoa. My bachelor thesis summarizes knowledge about the hormonal a physiological mechanisms that influence semen quality. This is especially the effect of sex and other hormones, physiological and oxidative stress, environmental conditions, antioxidant mechanism and composition of sperm cell membrane. Besides evaluating their influence on ejaculate quality on intraspecific level, I also describe their differences between avian species with respect to the differences of sperm competition.
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Cleft sentences in English and Norwegian
Mojžíšová, Kateřina ; Šaldová, Pavlína (advisor) ; Dušková, Libuše (referee)
The subject of this thesis is the use of the cleft construction in English and Norwegian. These languages employ a formally similar construction to focus a sentence element, but the use of the construction is not always identical. The analysis is carried out on English and Norwegian translations of Czech texts. The main aim of this thesis is to identify and analyse possible types of motivation for the use of the cleft construction. The studied types of motivation are the FSP, textual and syntactic motivation. The analysis of the FSP motivation is based on the theory of the FSP as described by Jan Firbas (Firbas 1992). The list of textual functions is based on the work of Jan Firbas (Firbas 1995) and Hilde Hasselgrd (Hasselgrd 2004). Some types of the syntactic motivation are proposed by Libuše Dušková (Dušková 1999: 319), but the types described in this thesis result from the present analysis. In addition to the motivation for the use of the construction, the thesis deals with Norwegian and English counterparts of the analysed cleft sentences. These counterparts are divided into three groups: the cleft or pseudo-cleft construction, the underlying non-cleft construction and a different construction (cf. chapter 4.4.). The purpose of the analysis is to find where the use of the cleft construction differs in...
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