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Male parental behaviour in rodents
Kopcová, Kateřina ; Frynta, Daniel (advisor) ; Pavelková, Věra (referee)
Paternal care is uncommon in mammals where males are more often involved in sexual competition for females than in providing care for their own offspring. Howewer some species present greater form of patertal care than metabolic investment in sex cells, and most of the time, this phenomenon is associated with a monogamous mating system. The direct costs of paternal behaviour are relatively well documented in primates, despite little research has explored these effects in monogamous rodents and even less in some polygynous rodents. The relative rarity of monogamy and associated paternal care has been interpreted in light of the relationship between parental investment and sexual selection. The major drawback of such bias is that most current hypothesis on rodent paternal behaviour are based mostly on data optained from a few species from temperate regions, mainly cricetids and murids, performed in controlled environment and in special conditions. Powered by TCPDF (www.tcpdf.org)
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Male parental behaviour in rodents
Kopcová, Kateřina ; Frynta, Daniel (advisor) ; Pavelková, Věra (referee)
Paternal care is uncommon in mammals where males are more often involved in sexual competition for females than in providing care for their own offspring. Howewer some species present grater form of patertal care than metabolic investment in sex cells, and most of the time, this phenomenon is associated with a monogamous mating system. The direct costs of paternal behaviour are relatively well documented in primates, despite little research has explored these effects in monogamous rodents and even less in some polygynous rodents. The relative rarity of monogamy and associated paternal care has been interpreted in light of the relationship between parental investment and sexual selection. The major drawback of such bias is that most current hypothesis on rodent paternal behaviour are based mostly on data optained from a few species from temperate regions, mainly cricetids and murids, performed in controlled environment and in special conditions.
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The morphology of penis and baculum in selected genera of African rodents
HORÁKOVÁ, Sylvie
This master thesis consists of two main parts. The first of them represents a compilation of information and facts about baculum, specifically about its presence, function and evolution in mammals. Further I focused on biological characters of five genera of African muroid rodents (Acomys, Aethomys, Gerbilliscus, Saccostomus, Stenocephalemys), which were analyzed in detail in the second part of my thesis in respect of their penial and bacular morphology.
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Methodology to rodent bark damage assessment on forest regeneration
Homolka, Miloslav ; Zejda, Jan ; Heroldová, Marta ; Kamler, Jiří
This methodology provides us with instructions, how to estimate extent of bark damage by gnawing caused by rodents on forest plantings based on a simple criterions. Data obtained may be used for objective assessment of rodent origin tree damage extent and its total value calculation. Exact data on tree damage can be used as a back coupling for damage prevention effectiveness. Relation between the rodent damage prevention costs and damaged area replanting costs may be retrospectively considered.
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Methodology to rodent species density monitoring in forest environment
Homolka, Miloslav ; Zejda, Jan ; Heroldová, Marta ; Kamler, Jiří
This methodology provides us with instruction how to monitor rodent densities in forest environment and is concentrated on the species causing damage to broad-leaved forest plantings. Principle presumption for effective plantings protection control is to know rodent’s population density. Basic ecological informations about the target species are also included. This methodology book contribute to better understanding of young tree damage origin in broader connections and contribute to more effective input on damage prevention. Methodology is addressed above all to forest practices workers.
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