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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Supplementations of the Mallard and their impact on wild populations
 Pechmanová, Hana ; Musil, Petr (advisor) ; Kreisinger, Jakub (referee)
The Mallard (Anas platyrhynchos) is quite a popular game bird species. In many states, particularly in Europe and North America, captive-rearing and releasing of mallards has become common practice in wildlife management. The aim of these supplementations is to boost the size of hunted populations. More than three million Mallards are released each year. This paper aims to summarize and assess the potential effects of captivity-reared Mallards on the wild populations. Supplementations of mallards pose a threat to the genetic identity and variability of wild populations and may potentially lead to morphological and behavioral changes. Breeding facilities can be source of many pathogens, so supplementations may lead to transmission of these pathogens into wild populations. All the factors mentioned above may thus affect the fitness and population dynamics of wild Mallards. This paper also briefly considers how the releases can affect other species and the environment. This issue is not well studied so more studies and appropriate monitoring are needed for an assessment of the rate of these processes.
Detailed record
Supplementations of the Mallard and their impact on wild populations
 Pechmanová, Hana ; Musil, Petr (advisor) ; Kreisinger, Jakub (referee)
The Mallard (Anas platyrhynchos) is quite a popular game bird species. In many states, particularly in Europe and North America, captive-rearing and releasing of mallards has become common practice in wildlife management. The aim of these supplementations is to boost the size of hunted populations. More than three million Mallards are released each year. This paper aims to summarize and assess the potential effects of captivity-reared Mallards on the wild populations. Supplementations of mallards pose a threat to the genetic identity and variability of wild populations and may potentially lead to morphological and behavioral changes. Breeding facilities can be source of many pathogens, so supplementations may lead to transmission of these pathogens into wild populations. All the factors mentioned above may thus affect the fitness and population dynamics of wild Mallards. This paper also briefly considers how the releases can affect other species and the environment. This issue is not well studied so more studies and appropriate monitoring are needed for an assessment of the rate of these processes.
Detailed record

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